Allen-Bradley 1756-IF8I User Manual Download Page 55

Page: 55 / 226

Rockwell Automation Publication 1756-UM540E-EN-P - December 2017

1756-IF8I Isolated Analog Input Module

Chapter 3

Figure 8 - 1756-IF8I Module Field-side Circuit with the Module Sourcing the Current Input Loop

Figure 9 - 1756-IF8I Module Wiring Diagram -Current Mode with External Loop Power

RTN-x

0.1

IN_x/V

A/D Converter

7500

Ω

IN_x/I/SRC

1000

Ω

4…20 mA
Transmitter

0.01

1000

Ω

0.01

Current Limit

24.9

Ω

Current Limit

i_sense

2.5V Vref

PGA

+18V

-18V

–

IMPORTANT

In this wiring diagram, an external, user-provided power supply provides
24V DC loop power.

–

A
A

1
3

–

IN_0/V

IN_0/I/SRC

RTN_0

Not used

IN_2/V

IN_2/I/SRC

RTN_2

Not used

4-wire

Transmitter

Shield Ground

IN_4/V

IN_4/I/SRC

RTN_4

Not used

IN_6/V

IN_6/I/SRC

RTN_6

Not used

IN_1/V

IN_1/I/SRC

RTN_1

Not used

IN_3/V

IN_3/I/SRC

RTN_3

Not used

IN_5/V

IN_5/I/SRC

RTN_5

Not used

IN_7/V

IN_7/I/SRC

RTN_7

Not used

24V DC

IMPORTANT:

Remember the following:

•

If separate power sources are used, do
not exceed the specific isolation
voltage. For more information on
module specifications, see the 1756
ControlLogix I/O Specifications
Technical Data, publication

1756-TD002

•

Place additional loop devices, for
example, strip chart recorders, at either
‘A’ location in the current loop.

24V DC

2-wire

Transmitter

Shield Ground

–

Summary of Contents for 1756-IF8I

Page 1: ...High Resolution Analog I O Modules Catalog Numbers 1756 IF8I 1756 IRT8I 1756 OF8I 1756 IR12 1756 IT16 User Manual OriginalInstructions ...

Page 2: ...information circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of Rockwell Automation Inc is prohibited Throughout this manual when necessary we use notes to make you aware of safety considerations Labels may also be on or inside the equipment to provide specific precautions WARNING Identifies informati...

Page 3: ...Modules in a Local Chassis 19 Output Modules in a Remote Chassis 19 Listen only Mode 20 Chapter2 Analog I O Module Features Common Analog I O Features 22 CIP Sync Timestamp of Data 22 Rolling Timestamp of Data 23 Floating Point Data Format 23 Module Quality Reporting 24 Calibration 25 Fault and Status Reporting 25 Configurable Software 26 Latching of Alarms 26 Module Inhibiting 27 Electronic Keyin...

Page 4: ...zed Sampling 52 1756 IF8I Diagrams 53 Fault and Status Reporting 58 Chapter4 Temperature sensing Analog Modules Common Module Features 59 Module Input Ranges 60 Notch Filter 61 Underrange Overrange Detection 65 Digital Filter 65 Process Alarms 66 Rate Alarm 68 Sensor Offset 68 10 Ohm Copper Offset 68 Wire Off Detection 69 Temperature Units 71 Sensor Types 71 1756 IRT8I Thermocouple Wire Length Com...

Page 5: ...dant Owners 98 About Redundant Owners 99 Configure the Output Module 103 Response Times for Output Modules 105 Input Modules 106 Troubleshooting 107 Chapter6 Install ControlLogix Analog I O Modules Install the I O Module 111 Key the Removable Terminal Block 113 Connect Wiring 114 Connect the Grounded End of the Cable 115 Connect the Ungrounded End of the Cable 116 RTB Types 117 RTB Wiring Recommen...

Page 6: ...e Profiles 145 Calibrate the Temperature sensing Modules 150 Calibrate the Output Module 158 Calibrate the 1756 OF8I Module for a Current Output Type 159 Chapter9 Troubleshoot Your Module Status Indicators for the 1756 IF8I Module 165 Status Indicators for the 1756 IRT8I Module 166 Status Indicators for the 1756 IR12 Module 166 Status Indicators for the 1756 IT16 Module 167 Status Indicators for t...

Page 7: ...s 194 1756 IR12 Module Tags 196 Configuration Tags 196 Input Tags 198 Output Tags 199 1756 IT16 Module Tags 200 Configuration Tags 200 Input Tags 202 Output Tags 203 1756 OF8I Module Tags 204 Configuration Tags 204 Input Tags 206 Output Tags 209 Redundant Owner Configuration Tags 211 Redundant Owner Input Tag Layout 211 Redundant Owner Output Tag Layout 211 Array Data Structures 212 AppendixB Choo...

Page 8: ...8 Rockwell Automation Publication 1756 UM540E EN P December 2017 Table of Contents Notes ...

Page 9: ...and convert digital values to analog signals for outputs Controllers use these signals for control purposes By using the Producer Consumer network model ControlLogix analog I O modules produce information when needed while providing additional system functions Summary of Changes We added information about how to configure the 1756 OF8I Redundant Owner See page 98 Product Compatibility and Download...

Page 10: ...nfigure and troubleshoot ControlLogix digital I O modules ControlLogix High Resolution Analog I O Modules Installation Instructions publication 1756 IN056 Provides information about how to install and wire ControlLogix high resolution analog I O modules ControlLogix Power Supply Installation Instructions publication 1756 IN619 Provides information about how to install a wide range of ControlLogix ...

Page 11: ...ply For more information on how to install the 1756 ControlLogix chassis and power supplies see Additional Resources on page 10 Verify that you have an RTB or IFM and its components Topic Page Before You Begin 11 Ownership 13 Configure a Module 13 Direct Connections 14 Input Module Operation 15 Output Module Operation 18 Listen only Mode 20 1 The ControlLogix system has been agency certified using...

Page 12: ...module 89 1 2 3 4 6 5 Removable Terminal Block Item Description 1 Backplane connector Interface for the ControlLogix system that connects the module to the backplane 2 Top and bottom guides Guides provide assistance in seating the RTB or IFM cable onto the module 3 Status indicators Indicators display the status ofcommunication module health and input output I O devices Indicators help in troubles...

Page 13: ... communication with its owner to operate normally Typically each module in the system has only one owner Some Input modules can have multiple owners Output modules and Input modules that have an Output image like the 1756 IF8I and 1756 IRT8I modules however are limited to one owner 1756 OF8I Redundant Owner Redundant ownership lets a single controller use redundant adapters to communicate with a s...

Page 14: ... to the I O modules in the local and remote chassis The I O module can operate immediately after the project download from the owner controller is complete Direct Connections A direct connection is a real time data transfer link between the controller and the device that occupies the slot that the configuration references When you download module configuration to a controller the controller attemp...

Page 15: ...e fault occurred in the fault status bits associated with the module The Logix Designer application monitors the fault status bits to annunciate the failures of a module Input Module Operation In traditional I O systems controllers periodically poll input modules to obtain their input status In the ControlLogix system the controller does not poll the analog input modules Instead the modules broadc...

Page 16: ...at elapses before the controller receives the data depends on the network configuration that connects the local and remote chassis For more information see Input Modules in a Remote Chassis Input Modules in a Local Chassis When an input module resides in a local chassis see Configure a Module on page 13 and after the input module broadcasts data to the chassis backplane the controller receives it ...

Page 17: ... the data over the network to the controller Broadcast Method The analog input module broadcasts data by using one of the following connection methods Multicast Data is sent to all network devices at once Unicast Data is sent to a specific controller depending on the configuration of the module For more information on guidelines for specifying RPI rates see the Logix5000 Controllers Design Conside...

Page 18: ...hen the output module echoes data The controller sends data to an output module only at the RPI When an output module receives new data from the controller the module multicasts or echoes a data value that corresponds to the signal present at its terminals to the rest of the control system This feature called Data Echo occurs whether the output module resides in the local or remote chassis Dependi...

Page 19: ... the following events RPI value A programmed Immediate Output IOT instruction is executed An IOT sends data immediately and resets the RPI timer 2 The 1756 ControlLogix EtherNet IP communication module in the local chassis broadcasts the data over the EtherNet IP network 3 After receiving the output data the 1756 ControlLogix EtherNet IP communication in the remote chassis broadcasts the data to i...

Page 20: ... your system see page 130 When you choose a Listen Only connection the controller and module establish communication without the configuration data being sent by the controller In this instance another controller owns the I O module IMPORTANT The Listen Only controller receives data from the I O module as long as an owning connection between a controller and I O module is maintained If the connect...

Page 21: ... values Volts Millivolts Milliamps Ohms ControlLogix analog output modules convert a digital value to an analog signal The following are example analog signal types to which output modules convert digital values Volts Milliamps Topic Page Common Analog I O Features 22 Relationship between Module Resolution and Scaling 31 Calibration 33 Calibrated Accuracy 34 Error Calculated over Hardware Range 34...

Page 22: ...surement and Control Systems Each input channel scan or new output application is stamped with a CIP Sync timestamp and one timestamp is returned to the controller for the module with the input data transfer You can use this feature for the following To identify the sequence of events in fault conditions or during normal operation It is possible to use the system clock between multiple modules in ...

Page 23: ...ved The rolling value is commonly used with instructions such as the PID and PIDE instructions Every time a rolling timestamp changes a PID or PIDE instruction is executed When you configure a PID instruction for use with an input module set the loop update time equal to the module s RPI value RollingTimestampwithOutputModules For the 1756 OF8I module the rolling timestamp value is updated only wh...

Page 24: ...is set to 1 you cannot trust the data reported You must troubleshoot the module to correct the cause of the inaccuracy Common causes of inaccurate data include the following An overrange or underrange condition exists A wire off detection condition has occurred A short circuit detection condition has occurred I Ch x Uncertain tag This tag indicates that channel data can be inaccurate but it is not...

Page 25: ...re calibrated at the factory and recalibration is not required If desired you can recalibrate the modules on a channel by channel or module wide basis For more information see Calibrated Accuracy on page 34 if you choose to recalibrate the modules in the future Fault and Status Reporting The modules provide fault and status data along with channel data Faults are indicated via the status indicator...

Page 26: ...s see page 137 IMPORTANT You must install Add on Profiles AOP to use the modules in any Logix Designer application or RSLogix 5000 software project This publication describes configuration with Logix Designer application AOPs are available at https download rockwellautomation com esd download aspx downloadid addonprofiles IMPORTANT You must manually unlatch the alarm You can unlatch the alarm by u...

Page 27: ...o use module inhibiting Multiple controllers own an analog input module A configuration change is required You must make the change in the program in all controllers In this case complete the following tasks a Inhibit the module b Change configuration in all controllers c Uninhibit the module You want to upgrade the module We recommend that you complete the following tasks a Inhibit the module b P...

Page 28: ...ed device With Compatible Module you can typically replace a device with another device that has the following characteristics Same catalog number Same or higher Major Revision Minor Revision as follows If the Major Revision is the same the Minor Revision must be the same or higher If the Major Revision is higher the Minor Revision can be any number Disable Keying Indicates that the keying attribu...

Page 29: ...scans the firmware but reformats the input and or output data to match the 6 channel module In general the 8 channel module is internally behaving as an 8 channel module because most of the firmware has not changed The difference in 8 channel module firmware is that in emulation mode configuration input and output data is reformatted to match the appropriate 6 channel module All data to from an 8 ...

Page 30: ...Channel 1756 Analog Modules publication 1756 RM011 1756 IF6I module configuration data sent to the 1756 IF8I module Internally the 1756 IF8I module sees the data like this 1756 IF6I Module Configuration Example The Controller still sends data in the 1756 IF6I module format but firmware internally moves data to the 1756 IF8I format An 8 channel module still behaves as an 8 channel module but accept...

Page 31: ...xample a 1756 IF8I module in Current mode has a theoretical operating range 25 1 25 1 mA The 24 bit resolution and 16 777 216 counts are available across 50 2 mA which yields our calculated 2 99 nA count resolution However when the 1756 IF8I module operates in Current mode it is configured for an input range 0 20 mA This range limits the input to a 0 21 mA actual range capability The number of cou...

Page 32: ...t Range Capability Number of Bits Across the Theoretical Operating Range Number of Bits Across the Actual Range Capability Resolution signal per count 1756 IF8I Voltage 10 10V 0 10V 0 5V 10 5 10 5V 0 10 5V 0 5 25V 24 bits 23 75 22 75 21 75 1 49 μV count Current 0 20 mA 0 20 mA sourcing 0 21 mA 0 21 mA sourcing 22 74 2 99 nA count 1756 IRT8I 1756 IT16 Thermocouple 100 100 mV 101 101 mV 24 bits 23 9...

Page 33: ... calibration as described in Chapter 8 Calibrate the ControlLogix Analog I O Modules on page 143 User executed calibration is optional 1756 IRT8I module only Channels that are configured for Thermocouple inputs perform a lead resistance self calibration when the module power is cycled Module Resolution 5 815 117 counts 0 mA 21 mA 4 mA 20 mA 0 in Engineering Units 100 in Engineering Units Module Sc...

Page 34: ...the hardware range in which the module operates RTD and Thermocouple Error Calculations When you use the 1756 IRT8I 1756 IR12 or 1756 IT16 module in temperature mode error calculations are achieved by a two step process 1 Calculate the module s error in ohms or volts 2 Convert the ohm volt error to temperature for the specific sensor and at the correct application temperature Specification Descrip...

Page 35: ...ure remains relatively stable calibration accuracy is better than 0 05 of the full range This 0 05 value is a worst case value In other words with the 1 500 Ω input range that is selected the worst case module error is 0 255 Ω Finally you must check an RTD linearization table to determine how the temperature error of 0 255 Ω translates For example if the module has a 0 05 or 0 255 Ω error and is a...

Page 36: ...RT8I Module Error At 25 C 77 F with Thermocouple Input Type 1 Application Temperature Module Error at 25 C 77 F When Connected to Thermocouple Types Type B Type C Type D Type TXK XK L Type R Type S Type E Type J Type K Type N Type T 200 C 328 F 1 65 C 1 79 C 2 06 C 2 95 C 4 53 C 2 86 C 0 C 32 F 3 46 C 4 59 C 0 93 C 8 51 C 8 33 C 0 77 C 0 89 C 1 14 C 1 72 C 1 16 C 200 C 392 F 2 65 C 2 83 C 0 71 C 5...

Page 37: ... 46 C 600 C 1112 F 15 12 C 4 74 C 4 44 C 1 12 C 7 92 C 8 82 C 1 12 C 1 54 C 2 12 C 2 32 C 800 C 1472 F 11 78 C 4 74 C 4 40 C 1 02 C 7 30 C 8 28 C 1 14 C 1 40 C 2 20 C 2 30 C 1000 C 1832 F 9 86 C 4 74 C 4 50 C 6 80 C 7 80 C 1 20 C 1 52 C 2 30 C 2 34 C 1200 C 2192 F 8 70 C 5 30 C 4 72 C 6 46 C 7 48 C 1 58 C 2 46 C 2 42 C 1400 C 2552 F 7 98 C 5 62 C 4 94 C 6 36 C 7 42 C 2 66 C 1600 C 2912 F 7 70 C 6 ...

Page 38: ...efault value Type R Type S Type T Type TXK XK L Application temperature that is the temperature of the physical location where the thermocouple is being used EXAMPLE Forexample whena1756 IRT8Imoduleisusedwithathermocoupleinput type in the following conditions module resolution is 0 01 Input channel is connected to a type K thermocouple Application temperature is 400 C 752 F In other words the appl...

Page 39: ...C 0 08 C 0 01 C 0 01 C 0 01 C 0 02 C 0 01 C 200 C 392 F 0 03 C 0 03 C 0 01 C 0 05 C 0 05 C 0 01 C 0 01 C 0 01 C 0 01 C 0 01 C 400 C 752 F 0 11 C 0 02 C 0 02 C 0 01 C 0 04 C 0 05 C 0 01 C 0 01 C 0 01 C 0 01 C 0 01 C 600 C 1112 F 0 07 C 0 02 C 0 02 C 0 01 C 0 04 C 0 04 C 0 01 C 0 01 C 0 01 C 0 01 C 800 C 1472 F 0 06 C 0 02 C 0 02 C 0 01 C 0 04 C 0 04 C 0 01 C 0 01 C 0 01 C 0 01 C 1000 C 1832 F 0 05 ...

Page 40: ...40 Rockwell Automation Publication 1756 UM540E EN P December 2017 Chapter 2 Analog I O Module Features Notes ...

Page 41: ...xibility regarding cable length when wiring your module 1756 IF8I Module Features The 1756 IF8I module has the following features Internal Loop Power Source Multiple Input Ranges Notch Filter Underrange Overrange Detection Digital Filter Process Alarms Rate Alarm Sensor Offset Wire Off Detection Synchronized Sampling Topic Page 1756 IF8I Module Features 41 1756 IF8I Diagrams 53 Fault and Status Re...

Page 42: ...is 21 mA For one second the overcurrent condition self corrects if the condition trigger is removed After one second the condition latches the channel disables Source Loop Current and continues to send 24 mA with an Overrange indication The following are examples of events that unlatch the condition Power is cycled to the module The module is reset The controller connection to the module is inhibi...

Page 43: ...annel can drive loop impedance of up to approximately 1300 Ω This lets you include other devices such as chart recorders and meters in the current loop For more information on wiring the 1756 IF8I module see page 84 Multiple Input Ranges The 1756 IF8I module offers multiple input ranges that are dictated by channel configuration choices The input type selection determines the available ranges To s...

Page 44: ... IF8I module offers two levels of line noise rejection Each level has a filter associated with it The module automatically determines which filter is used based on the Notch Filter setting and RPI rate A trade off exists between sampling speed and level of noise rejection The faster sampling speed ranging from 1 Notch Filter to 3 Notch Filter the less noise rejection In this case the module automa...

Page 45: ...Filter 1 207 0 ms 103 5 ms 69 1 ms 51 8 ms 20 7 ms 17 3 ms 10 4 ms 2 1 ms 1 1 ms 1 0 ms Minimum Sample Time RPI SINC 3 Filter 1 621 0 ms 310 5 ms 207 1 ms 153 4 ms 62 1 ms 51 9 ms 31 2 ms 6 1 ms 3 1 ms 1 0 ms 0 100 Step Response Time 2 3 600 ms 1RPI 300 ms 1RPI 200 ms 1RPI 150 ms 1RPI 60 ms 1RPI 50 ms 1RPI 30 ms 1RPI 6 ms 1 RPI 3 ms 1RPI 4 1 ms 1RPI 4 3 dB Frequency 2 1 3 Hz 2 7 Hz 4 3 Hz 5 1 Hz 1...

Page 46: ...Underrange is set at 3 6 mA but the I Ch x Data tag reports values as low as 0 0 mA 2 When used with a Current input type the module has an inherent deadband Once latched an Underrange condition continues until the signal is greater than 3 8 mA 21 00 mA 3 3 When used with a Current input type the module has an inherent deadband Once latched an Overrange condition continues until the signal is less...

Page 47: ...ion As shown in the following graphic by using a step input change to illustrate the filter response you see that 63 2 of the total response is reached when the digital filter time constant elapses Each additional time constant achieves 63 2 of the remaining response To see where to set the Digital Filter see page 131 Yn Yn 1 Xn Yn 1 t t TA Yn Present output filtered peak voltage PV Yn 1 Previous ...

Page 48: ... enable bit is not set the corresponding Input Process Alarm never triggers To see where to set the Process Alarms see page 137 You can latch process alarms The alarm remains on even if the condition that causes it to occur disappears until the alarm is unlatched IMPORTANT Youmustmanuallyunlatchthealarm Youcanunlatchthealarm byusingone of the following methods While the project is online click the...

Page 49: ...the Alarm to be cleared Figure 4 on page 49 shows the input data that sets each of the four alarms at some point during module operation In this example latching is disabled therefore each alarm turns Off when the condition that caused it to set ceases to exist Figure 4 Alarm Deadband Alarm Settings To see where to set the Alarm Deadband see page 137 43153 High high Low low Low High Alarm Deadband...

Page 50: ... O Ch x SensorOffset Where x represents the module channel In the example above the O Ch x SensorOffset tag 1 25 EXAMPLE If scaling mA to mA if you configure a channel s rate alarm to 1 0 mA s the rate alarm triggers only if the difference between measured input samples changes at a rate 1 0 mA s Consider the following conditions The module s RPI is 100 ms that is new data is sampled every 100 ms ...

Page 51: ...ondition is detected in voltage or current applications IMPORTANT Be aware that the Disable All Alarms feature does not disable the wire off detection feature The Disable All Alarms feature disables all alarms on the module The wire off detection feature is not an alarm It is an indicator that a wire has been disconnected from the channel but does not trigger an alarm To disable the wire off detec...

Page 52: ...wing conditions must exist to use this feature A 1588 CIP Sync Time Master is configured for the chassis All modules in the set use the same RPI value or values that are multiples of each other Synchronized Sampling with Other Synchronized Modules is enabled for all input channels in the set For these input modules configuring one channel for Synchronized Sampling synchronizes all eight channels W...

Page 53: ...kplane Side 1 7 5 6 B A C K P L A N E Channels 1 6 not shown Backplane ASIC DC DC Shutdown Circuit System 5V Isolator DC DC Converter Vref Signal Conditioning and A D Converter IsolatedPower Channel 0 Channel 7 IN_0 V IN_0 I SRC RTN_0 Isolator DC DC Converter Vref Signal Conditioning and A D Converter IsolatedPower Nonvolatile Memory Status Indicators IN_7 V IN_7 I SRC RTN_7 Represents Channel Iso...

Page 54: ...le Field side Circuit with an Externally powered Current Input Loop RTN x 1 µA Pullup 0 1 µF IN_x V A D Converter 7500 Ω 2 5V Vref IN_x I SRC 1000 Ω 55 Ω 0 01 µF 0 01 µF 1000 Ω 20 Ω Voltage Source 0 01 µF 0 01 µF PGA RTN x 0 1 µF IN_x V A D Converter 7500 Ω IN_x I SRC 1000 Ω 55 Ω 4 20 mA Transmitter 0 01 µF 0 01 µF 1000 Ω 20 Ω Transmitter Power 0 01 µF 0 01 µF Current Limit 24 9 Ω 25 Ω i_sense 2 5...

Page 55: ... 1 3 1 6 1 5 1 8 1 7 1 0 2 9 1 2 2 1 2 4 2 3 2 6 2 5 2 8 2 7 2 0 3 9 2 2 3 1 3 33 6 3 5 3 2 34 8 6 4 IN_0 V IN_0 I SRC RTN_0 Notused IN_2 V IN_2 I SRC RTN_2 Notused 4 wire Transmitter Shield Ground IN_4 V IN_4 I SRC RTN_4 Notused IN_6 V IN_6 I SRC RTN_6 Notused Notused Notused IN_1 V IN_1 I SRC RTN_1 Not used IN_3 V IN_3 I SRC RTN_3 Not used IN_5 V IN_5 I SRC RTN_5 Not used IN_7 V IN_7 I SRC RTN_7...

Page 56: ... V IN_2 I SRC RTN_2 Not used Shield Ground IN_4 V IN_4 I SRC RTN 4 Not used IN_6 V IN_6 I SRC RTN_6 Not used Not used Not used IN_1 V IN_1 I SRC RTN 1 Notused IN_3 V IN_3 I SRC RTN_3 Notused IN_5 V IN_5 I SRC RTN 5 Notused IN_7 V IN_7 I SRC RTN_7 Notused Notused Notused IMPORTANT Remember the following If separate power sources are used do not exceed the specific isolation voltage For more informa...

Page 57: ...2 I SRC RTN_2 Not used User Analog Input Device Shield Ground IMPORTANT If separate power sources are used do not exceed the specific isolation voltage For more information on module specifications see the 1756 ControlLogix I O Specifications Technical Data publication 1756 TD002 IN_4 V IN_4 I SRC RTN 4 Not used IN_6 V IN_6 I SRC RTN_6 Not used Not used Not used IN_1 V IN_1 I SRC RTN 1 Not used IN...

Page 58: ...ttag value the O Ch x LLAlarmEn tagis set andalarms are enabled for the channel Ch x LAlarm The I Ch x Data tag value is less than the C Ch x LAlarmLimit tag value the O Ch x LAlarmEn tag is set and alarms are enabled for the channel Ch x HAlarm The I Ch x Data tag value is greater than the C Ch x HAlarmLimittag value the O Ch x HAlarmEn tag is set and alarms are enabled for the channel Ch x HHAla...

Page 59: ...1756 IR12 The 1756 IR12 module has 12 non isolatedchannels Eachchannel supports 3 wire RTDconnections The module provides 24 bit data resolution Additional features are described in this chapter 1756 IT16 The 1756 IT16 module has 16 non isolatedchannels Each channel supports connection to thermocouple mV devices The module provides 24 bit data resolution Additional features are described in this c...

Page 60: ...r type IMPORTANT Most of the features available on the modules are software configurable For more information on how to configure the module see Chapter 7 Configure ControlLogix Analog I O Modules on page 125 Table 11 Module Channel Input Ranges Module Input Type Sensor Type Input Range 1756 IRT8I and 1756 IR12 RTD Ohm One of the following 0 500 Ω 0 1000 Ω 0 2000 Ω 0 4000 Ω 100 Ω PT 385 0 500 Ω 20...

Page 61: ...ude of the signal with minimal signal distortion Choose a Notch Filter based on what noise frequencies are present in the module s operating environment and any sampling requirements needed for control The default Notch Filter setting is 60 Hz For example a Notch Filter is typically set to 60 Hz to filter out 60 Hz AC line noise and its overtones A 60 Hz Notch Filter setting attenuates frequencies...

Page 62: ...mines which filter is used based on the Notch Filter setting and RPI rate A trade off exists between sampling speed and level of noise rejection The faster the sampling speed the less noise rejection In this case the 1756 IRT8I module automatically uses a SINC 1 filter The 1756 IR12 and 1756 IT16 use a Sinc 5 Sinc 1 filter combination This filtering option offers 34 dB noise rejection at the Notch...

Page 63: ...3 5 ms 69 1 ms 51 8 ms 20 7 ms 17 3 ms 10 4 ms 2 1 ms 1 1 ms 1 0 ms Minimum Sample Time RPI SINC 3 Filter 1 621 0 ms 310 5 ms 207 1 ms 153 4 ms 62 1 ms 51 9 ms 31 2 ms 6 1 ms 3 1 ms 1 0 ms 0 100 Step Response Time 2 3 600 ms 1RPI 300 ms 1RPI 200 ms 1RPI 150 ms 1RPI 60 ms 1RPI 50 ms 1RPI 30 ms 1RPI 6 ms 1 RPI 3 ms 1RPI 1 ms 1RPI 3 dB Frequency 2 1 3 Hz 2 7 Hz 4 3 Hz 5 1 Hz 13 Hz 15 Hz 26 Hz 128 Hz ...

Page 64: ... set the Notch Filter see page 132 Table 14 1756 IR12 and 1756 IT16 Notch Filter Settings Notch Setting 20 Hz 50 Hz 60 Hz Default 100 Hz 500 Hz 1000 Hz 5000 Hz Minimum Sample Time RPI SINC 1 Filter 1 200 4 ms 80 4 ms 67 1 ms 50 0 ms 50 0 ms 50 0 ms 50 0 ms Minimum Sample Time RPI SINC 3 Filter 1 600 4 ms 240 4 ms 200 4 ms 120 4 ms 50 0 ms 50 0 ms 50 0 ms 0 100 Step Response Time 2 3 600 ms 1RPI 24...

Page 65: ...illiseconds A value of 0 disables the filter The digital filter equation is a classic first order lag equation Table 15 Low and High Signal Limits on Temperature measuring Input Modules Input Type Available Range Underrange Threshold Overrange Threshold RTD 0 500 Ω 0 00 Ω 510 00 Ω 0 1000 Ω 0 00 Ω 1020 00 Ω 0 2000 Ω 0 00 Ω 2040 00 Ω 0 4000 Ω 0 00 Ω 4080 00 Ω Thermocouple 100 100 mV 101 00 mV 101 00...

Page 66: ...user configurable alarm trigger points High high High Low Low low You can enable or disable Process Alarms individually via the Output tags for each channel When a module is added to your Logix Designer application project and tags are created the Alarms are disabled by default Each individual Process Alarm enable tag that is O Ch x LLAlarmEn O Ch x LAlarmEn O Ch x HAlarmEn and O Ch x HHAlarmEn is...

Page 67: ...re to set the Alarm Deadband see page 137 IMPORTANT Youmustmanuallyunlatchthealarm Youcanunlatchthealarm byusingone of the following methods While the project is online click the Alarm Configuration tab on the Module Then click Unlatch to unlatcha specific alarm or Unlatch All to unlatch all alarms Change the module output tag for the alarm that you want to unlatch For example the Ch x LLAlarmUnla...

Page 68: ...e to use this feature The offset value is indicated in units of 0 01 Ohms EXAMPLE In normal scaling in Celsius if you configure a channel s rate alarm to 100 1 C s therate alarm triggersonlyif the difference between measured input samples changes at a rate 100 1 C s Consider the following conditions The module s RPI is 100 ms that is new data is sampled every 100 ms Atinput sample 1 the channel me...

Page 69: ...set on the Configuration tab see page 131 Wire Off Detection The module alerts you when one or more wires have been disconnected from a channel When a wire off condition occurs the following events occur Input data for the channel changes to a specific scaled value A fault bit is set in the owner controller indicating the presence of a wire off condition For more information on module behavior whe...

Page 70: ...not apply A wire off condition is not detected when wires are simultaneously disconnected from only IN_x RTD C and IN_x RTD D terminals All wires are disconnected from the module With the 4 wire RTD device the wire off condition is detected within five seconds of wires getting disconnected If bullet 1 the following occurs Input data for the channel changes to the lowest scaled temperature value as...

Page 71: ...termine sensor type temperature limits by your choice of Input Type Sensor Type and Temperature Units Table 17 Available Sensor Types Input Type Available Sensor Types RTD 100 Ω PT 385 200 Ω PT 385 500 Ω PT 385 1000 Ω PT 385 100 Ω PT 3916 200 Ω PT 3916 500 Ω PT 3916 1000 Ω PT 3916 10 Ω CU 427 120 Ω NI 672 100 Ω NI 618 120 Ω NI 618 200 Ω NI 618 500 Ω NI 618 Thermocouple B C D E J K N R S T TXK XK L...

Page 72: ... following table lists temperature range limits on the module Table 18 Temperature Limits for RTD and Thermocouple Sensor Types Input Type Sensor Type Temperature Range Limits RTD Ohms 3 wire or4 wire 100 Ohm PT 385 200 Ohm PT 385 500 Ohm PT 385 1000 Ohm PT 385 200 870 C 328 1598 F 73 1143 K 132 2058 R 100 Ohm PT 3916 200 Ohm PT 3916 500 Ohm PT 3916 1000 Ohm PT 3916 200 630 C 328 1166 F 73 903 K 1...

Page 73: ...dule accuracy Thermocouple mV TC Type B 21 1820 C 68 3308 F 293 2093 K 528 3768 R TC Type C 0 2320 C 32 4208 F 273 2593 K 492 4668 R TC Type D 0 2320 C 32 4208 F 273 2593 K 492 4668 R TC Type E 270 1000 C 454 1832 F 3 1273 K 6 2292 R TC Type J 210 1200 C 346 2192 F 63 1473 K 114 2652 R TC Type K 270 1372 C 454 2502 F 3 1645 K 6 2961 R TC Type N 270 1300 C 454 2372 F 3 1573 K 6 2832 R TC Type R 50 ...

Page 74: ...e moment in time The following conditions must exist to use this feature A 1588 CIP Sync Time Master is configured for the chassis All modules in the set use the same RPI value or values that are multiples of each other Synchronized Sampling with Other Synchronized Modules is enabled for all input channels in the set For these input modules configuring one channel for Synchronized Sampling synchro...

Page 75: ... To accurately compensate the input signal from your module you must use a cold junction compensation CJC sensor to account for the increased voltage Remember the following when compensating the input signal from your module CJC is optional and can be disabled The module uses two channels for CJC When using an RTB you must connect CJC sensors at RTB terminals 1 2 35 and 36 Differences exist betwee...

Page 76: ...to the module because it is built into the IFM However you must enable the Remote CJ Compensation field in the Logix Designer application as shown below IMPORTANT Remember the following Connect the white end of the CJC sensor to the even numbered terminals For CJ 0 connect the white end to terminal 2 For CJ 1 connect the white end to terminal 36 Connect the orange end of the CJC sensor to the odd ...

Page 77: ...unction Disable to disable compensation as shown below IMPORTANT Consider the following before disabling cold junction compensation We recommend that you do not disable the cold junction disable option Typically this option is used only in systems that have no thermoelectric effect such as test equipment in a controlled lab The Cold Junction Disable box on the Module Properties Configuration tab d...

Page 78: ...n compensation values The single Cold Junction Offset affects all channels equally If you know that your cold junction compensation values are consistently inaccurate by some level for example 1 2 C type the value into the box to account for this inaccuracy IMPORTANT Cold Junction temperatures are always reported as Celsius temperature units and offset values are always set in Celsius temperature ...

Page 79: ... as channels 1 and 7 IN_0 RTD D IN_0 A Backplane ASIC DC DC Shutdown Circuit System 5V ADC CJC Channel 0 IN_0 B Isolator DC DC Converter Vref Signal Conditioning and A D Converter IsolatedPower Channel 0 Channel 1 Channel 6 Channel 7 IN_0 RTD C IN_1 RTD D IN_1 A IN_1 B IN_1 RTD C IN_7 RTD D IN_7 A IN_7 B IN_7 RTD C IN_6 RTD D IN_6 A IN_6 B IN_6 RTD C CJC 1 Isolator DC DC Converter Vref Signal Cond...

Page 80: ... side Circuit with Thermocouple Input 0 1 µF IN_x RTD D A D Converter IN_x A 1000 Ω 10 Ω 0 01 µF 0 01 µF 1000 Ω 10 Ω RTD 0 01 µF 0 01 µF IN_x B IN_x RTD C I exc 600 µA I exc 600 µA 2 5V Vref PGA 0 1 µF IN_x RTD D A D Converter IN_x A 1000 Ω 10 Ω 0 01 µF 0 01 µF 1000 Ω 10 Ω RTD 0 01 µF 0 01 µF IN_x B IN_x RTD C I exc 600 µA 2 5V Vref PGA 0 1 µF IN_x RTD D A D Converter IN_x A 1000 Ω 10 Ω 0 01 µF 0 ...

Page 81: ...areused do not exceed the specific isolation voltage For more information on module specifications see the 1756 ControlLogix I O Specifications Technical Data publication 1756 TD002 Terminals 1 2 35 and 36 are not used in RTD applications For 2 wire resistor applications including calibration make sure IN_x B and IN_x RTD C are shorted together IN_3 RTD C IN_4 B IN_4 RTD C IN_5 B IN_5 RTD C IN_6 B...

Page 82: ...ORTANT Remember the following If separate power sources are used do not exceed the specific isolation voltage For more information on module specifications see the 1756 ControlLogix I O Specifications Technical Data publication 1756 TD002 Terminals 1 2 35 and 36 are not used in RTD applications IN_3 RTD C IN_4 B IN_4 RTD C IN_5 B IN_5 RTD C IN_6 B IN_6 RTD C IN_7 B IN_7 RTD C CJC 1 CJC 0 IN_0 A IN...

Page 83: ... A IN_3 RTD D IN_4 A IN_4 RTD D IN_5 A IN_5 RTD D IN_6 A IN_6 RTD D IN_7 A IN_7 RTD D CJC Cold Junction Sensor Cold Junction Sensor mV Source IMPORTANT Remember the following Connect the white end of the CJC sensor to the even numbered terminal and connect the orange end of the CJC sensor to the odd numbered terminals For CJC 0 White end Connected to terminal number 2 Orange end Connected to termi...

Page 84: ...84 Rockwell Automation Publication 1756 UM540E EN P December 2017 Chapter 4 Temperature sensing Analog Modules 1756 IR12 Diagrams Figure 20 1756 IR12 Module Block Diagram ...

Page 85: ...dule Field side Circuit with RTD Input Figure 22 1756 IR12 Module Wiring Diagram 3 wire RTD Input IMPORTANT Remember the following Ifseparatepowersourcesareused donotexceedthe specific isolation voltage as listed in the specifications For2 wireresistorapplicationsincludingcalibration make sure IN_x B and RTN_x C are shorted together ...

Page 86: ...86 Rockwell Automation Publication 1756 UM540E EN P December 2017 Chapter 4 Temperature sensing Analog Modules 1756 IT16 Diagrams Figure 23 1756 IT16 Module Block Diagram ...

Page 87: ...rtotheeven numbered terminal Connect the orange end of the CJC sensor to the odd numbered terminals For CJC 0 White end Connectedto terminal number 2 Orange end Connected to terminal number 1 For CJC 1 White end Connected to terminal number 36 Orange end Connected to terminal number 35 CJC sensors do not come with the module You must order the sensors product catalog number 1756 CJC separately If ...

Page 88: ...erfect Ch x LLAlarm TheI Ch x Datatagvalueislessthanthe C Ch x LLAlarmLimittag value theO Ch x LLAlarmEntagissetandalarms are enabled for the channel Ch x LAlarm The I Ch x Data tag value is less than the C Ch x LAlarmLimit tag value the O Ch x LAlarmEn tag is set and alarms are enabled for the channel Ch x HAlarm The I Ch x Data tag value is greater than the C Ch x HAlarmLimittag value the O Ch x...

Page 89: ...I module has the following features Multiple Output Ranges Channel Offset Ramping Rate Limiting Hold for Initialization Clamping Limiting Clamp Limit Alarms Data Echo Redundant Owners Topic Page 1756 OF8I Module Features 93 1756 OF8I Diagrams 93 Drive Different Loads with the 1756 OF8I Module 96 Fault and Status Reporting 97 Redundant Owners 98 IMPORTANT Most of the features available on the 1756 ...

Page 90: ... the following ways On the Configuration tab of the Module Properties dialog box Directly in the channel s C Ch x Offset tag For example if the channel has an error such that it reads 8 mA as 7 8 mA you account for the error by setting the Channel Offset field on the Configuration tab to 1 2500 if using the default scaling of 4 20 ma 0 100 or by setting the C Ch x Offset tag to 1 25 To see where t...

Page 91: ... a channel indicates that the channel is holding Clamping Limiting Clamping limits the output from the analog module to remain within a range configured by the controller even when the controller commands an output outside that range This safety feature sets a high clamp and a low clamp Once clamps are determined for a module and enabled any data received from the controller that exceeds those cla...

Page 92: ...annel data values that match the analog value that was sent to the module s screw terminals at that time The 1756 OF8I module returns a status word that represents the value sent to it by the controller The echoed value is indicated in input tag I Ch x Data and is represented in Engineering Units Fault and status data are also sent This data is sent at the RPI IMPORTANT Clamp values are in enginee...

Page 93: ... Side Backplane Side 1 7 5 6 B A C K P L A N E Channels 1 6 not shown Backplane ASIC DC DC Shutdown Circuit System 5V Isolator DC DC Converter Vref D A Converter and Output Stage Channel 0 Channel 7 OUT_0 V OUT_0 I RTN_0 Isolator DC DC Converter Vref D A Converter and Output Stage Isolated Power Nonvolatile Memory Status Indicators OUT_7 V OUT_7 I RTN_7 Isolated Power Represents Channel Isolation ...

Page 94: ... Current Output Figure 28 1756 OF8I Module Field side Circuit with Voltage Output RTN x V OUT_x V D A Converter OUT_x I 0 047 µF 0 0022 µF 46 Ω Current Amplifier Iout 13V Current OutputDevice 0 1000 Ω 5V Vref Power Supply RTN x 13V OUT_x V D A Converter Gnd_x 5V Vref OUT_x I 4640 Ω 0 047 µF 0 0022 µF 21 Ω Voltage Amplifier Vout Vsense 13V Voltage OutputDevice 1000 Ω ...

Page 95: ...TN_2 Not used 1000 Ω User Analog Output Device OUT_4 V OUT_4 I RTN_4 Not used OUT_6 V OUT_6 I RTN_6 Not used Not used Not used OUT_1 V OUT_1 I RTN_1 Not used OUT_3 V OUT_3 I RTN_3 Not used OUT_5 V OUT_5 I RTN_5 Not used OUT_7 V OUT_7 I RTN_7 Not used Not used Not used IMPORTANT Remember the following Ifseparatepowersourcesareused do not exceed the specific isolation voltage For more information on...

Page 96: ...publication 1756 TD002 1 3 5 7 0 1 9 11 12 4 1 3 1 6 1 5 1 8 1 7 1 0 2 9 1 2 2 1 2 4 2 3 2 6 2 5 2 8 2 7 2 0 3 9 2 2 3 1 3 33 6 3 5 3 2 34 8 6 4 OUT_0 V OUT_0 I RTN_0 Not used OUT_2 V OUT_2 I RTN_2 Not used 1000 Ω User Analog Output Device OUT_4 V OUT_4 I RTN_4 Not used OUT_6 V OUT_6 I RTN_6 Not used Not used Not used OUT_1 V OUT_1 I RTN_1 Not used OUT_3 V OUT_3 I RTN_3 Not used OUT_5 V OUT_5 I RT...

Page 97: ...than the configured LowLimit at some points and the alarm has not been unlatched Ch x HighClampAlarm The following events occur Clamping is enabled on this channel One of the following The channel data requested indicated in the O Ch x Data tag is currently greater than the configured HighLimit Latching is enabled and the O Ch x Data tag was greater than the configured HighLimit at some points and...

Page 98: ...dicates that an owner is ready to take ownership if needed The ROO is implemented as a single bit OwnerReady as this implementation is intended for only two controllers When the OwnerClaim bit is set it indicates that the controller wants to claim ownership of the redundant connection and have its outputs actively used If both redundant owners have COO set the last originator application that tran...

Page 99: ...he Claiming Owner and which is the Ready Owner The relationship is akin to a primary and secondary relationship Restrictions The redundant owner solution uses two connections for every I O module one for each of the redundant connections Each connection is shown in the Studio 5000 Logix Designer I O Configuration two entries for each I O module The two I O module configurations must match Two conn...

Page 100: ...K1 2 1 NET LNK2 OK LNK1 2 1 NET LNK2 OK LNK1 FLT ST FLT ST 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15 DC INTPUT FLT ST FLT ST 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15 DC OUTPUT ST ST 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ANALOG INPUT O K FLT ST FLT ST 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15 DC O...

Page 101: ... 12 13 14 15 DC OUTPUT ST ST 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ANALOG INPUT O K RUN PROG REM Logix5585E NET LINK SAFETY ON 2 1 NET LNK2 OK LNK1 FLT ST FLT ST 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15 DC INTPUT FLT ST FLT ST 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15 DC OUTPUT ST ST 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ANALOG I...

Page 102: ...es back to that controller A S FS XIC should be used to disable Claim Ready bits until the controller has entered Run mode and can evaluate if it should make a Claim or Ready transition Failure to do this could lead to a claim happening before the controller is back in Run mode Thus the output would transition briefly to its Program Mode Safe State prior to entering Run mode rather than making a s...

Page 103: ...e steps to implement Redundant Ethernet modules in your project 1 Add the additional I O configuration to your project for the second Ethernet module In the example project this is EN2T_B We recommend following the module naming examples used in the example project Ethernet module in Slot 0 EN2T_A_ your name for the chassis Ethernet module in Slot 1 EN2T_B_ your name for the chassis Reference the ...

Page 104: ...ou have in the chassis In the example project the rung number was equal to the slot number of the module being referenced We used rungs with only an NOP No Operation instruction to hold the rung number for slots without an analog module 11 In each routine add rungs for the analog modules that you have Most analog modules have their own Add On Instructions Be aware of the channel count of the AOI a...

Page 105: ...5 ms These recommendations are for response performance Faster RPIs have a longer response time Slower RPIs can have a much longer response time RPIs should be 4 x RPI 200 ms 8 x RPI 200 ms or 16 x RPI 200 ms so 25 is the recommended RPI If the prior RPI criterion is not met the CIP connection timeout delay minimum will be 200 ms 1 RPI If the 4 8 16 x RPI does not equal 200 ms or 100 ms then the r...

Page 106: ...ple mV Replace with1756 IRT8I and use in 1756 IT6I or 1756 IT6I2 compatibility mode 1756 IRT8I Analog Input 8 channel thermocouple or RTD isolated Must be used in 1756 IR6I or 1756 IT6I compatibility mode You will lose 2 channels and all of the new features of the 1756 IRT8I module Use the 1756 ITR8I module in remote I O chassis and 1756 IR6Ior1756 IT6ImoduleinLogixDesignerI Oconfiguration 1756 IF...

Page 107: ...dule 5 If you still have the error delete one of the module entries in the Logix Designer I O Configuration and add it into your project again These troubleshooting steps below assume that the system was commissioned and running without any errors before the issue occurred Issue Output is ON in the user application code but is not ON at the Output module 1 Verify that at least one of the connectio...

Page 108: ... 1 Verify that only one of the connections to the Output module has the OwnerClaim output set to true 1 2 Verify that only one of the connections to the Output module has the OwnerReady output set to true 1 For all of the issues described in this section you can consult product manuals Rockwell Automation KnowledgeBase and Rockwell Automation Technical Support ...

Page 109: ... radio communication services in such environments This equipment is supplied as open type equipment It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts The enclosure must have suitable flame retardantpropertiestopreventormin...

Page 110: ...RNING EXPLOSION HAZARD Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous Secure any external connections that mate to this equipment by using screws sliding latches threaded connectors or other means provided with this product Substit...

Page 111: ...dvoltagewhenappliedin Zone 2 environments This equipment must be used only with ATEX certified Rockwell Automation backplanes Secure any external connections that mate to this equipment by using screws sliding latches threaded connectors or other means provided with this product Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous WARNING When you inser...

Page 112: ...nsitive to electrostatic discharge which can cause internal damage and affect normal operation Follow these guidelines when you handle this equipment Touch a grounded object to discharge potential static Wear an approved grounding wriststrap Do not touch connectors or pins on component boards Do not touch circuit components inside the equipment Use a static safe workstation if available Store the ...

Page 113: ...o a module that does not match the positioning of the respective tabs Key positions on the module that correspond to unkeyed positions on the RTB For example if you place a U shaped keying band in slot 4 on the module you cannot place a wedge shaped tab in slot 4 on the RTB or your RTB does not mount on the module We recommend that you use a unique keying pattern for each slot in the chassis Compl...

Page 114: ...ng Tab Module Side of the RTB 0 1 2 3 4 5 6 7 20851 M IMPORTANT We recommend that you use Belden 8761 cable when wiring the RTB for the following ControlLogix analog modules 1756 IF8I 1756 OF8I 1756 IRT8I on points that use the Thermocouple functionality We recommend that you use Belden 9533 or 83503 cable with the 1756 IRT8I module on points that use the RTD functionality WARNING Ifyouconnectordi...

Page 115: ... 1756 TBNH 1756 TBSH and 1756 TBS6H Any application that requires agency certification of the ControlLogix system using other wiring termination methods may require application specific approval by the certifying agency IMPORTANT We recommend that you ground the following ControlLogix analog module shield and drain wires at the field side 1756 OF8I 1756 IRT8I 1756 IF8I on points that use the non s...

Page 116: ...ground The functional earth ground symbol appears near the tab 6 When the drain wire is grounded connect the insulated wires to the field side Connect the Ungrounded End of the Cable 1 Cut the foil shield and drain wire back to the cable casing and apply shrink wrap 2 Connect the insulated wires to the RTB 45080 Chassis Mounting Tab Drain Wire with Ground Lug 4 m or 5 m 10 or 12 Star Washer 4 m or...

Page 117: ...al on the side 3 Turn the screw clockwise to close the terminal on the wire The open section at the bottom of the RTB is called the strain relief area The wiring from the connections can be grouped with a plastic tie ATTENTION Consider the following when using the 1756 TBCH RTB Do not wire more than two 0 33 1 3 mm2 22 16 AWG conductors on any single terminal You can connect only one 2 1 mm2 14 AW...

Page 118: ...he open section at the bottom of the RTB is called the strain relief area The wiring from the connections can be grouped with a plastic tie RTB Wiring Recommendations Consider these guidelines when wiring your RTB Begin wiring the RTB at the bottom terminals and move up Use a tie to secure the wires in the strain relief bottom area of the RTB For applications that require heavy gauge wiring order ...

Page 119: ...when the RTB is seated on the module 1 Align the grooves at the bottom of each side of the housing with the side edges of the RTB 2 Slide the RTB into the housing until it snaps into place 1 4 3 2 3 2 20858 M Item Description 1 Housing cover 2 Groove 3 Side edge of RTB 4 Strain relief area IMPORTANT If additional wire routing space is required for your application use the extended depth housing ca...

Page 120: ...ng If your application uses heavy gauge wiring you can order extended depth housing Extended depth housing does not come with an RTB IMPORTANT The housings shown are used with a spring clamp RTB but the capacity for each remains the same regardless of RTB type Cat No RTB Type Wire Capacity Number of Wires 1756 TBCH Cage clamp Standard depth 336 mm2 0 52 in 2 36 18 AWG wires 23 14 AWG wires 1756 TB...

Page 121: ...ed The diagram shows the difference in depth between an I O module using standard depth housing and one using extended depth housing Standard depth Housing Extended depth Housing 144 73 5 698 Rear Surface of ControlLogix Chassis 131 75 5 187 3 18 0 125 12 7 0 5 Dimensions are in mm in 41682 IMPORTANT The depth from the front of the module to the back of the chassis is as follows Standard depth hou...

Page 122: ...ock RTB withfield sidepowerapplied anelectricalarccanoccur Thiscouldcause an explosion in hazardous location installations Be sure that power is removed or the area is nonhazardous before proceeding ATTENTION Shock hazard exists If the RTB is installed onto the module while the field side power is applied the RTB will be electrically live Do not touch the RTB s terminals Failure to observe this ca...

Page 123: ...ure that power is removed or the area is nonhazardous before proceeding Repeated electrical arcing causes excessive wear to contacts on both module and itsmatingconnector Worncontactscancreateelectricalresistancethatcanaffect module operation ATTENTION Shock hazard exists If the RTB is removed from the module whilethefield sidepowerisapplied themodulewillbeelectricallylive Donot touch the RTB s te...

Page 124: ...of the module 2 Open the RTB door by using the bottom tab 3 Hold the spot marked PULL HERE and pull the RTB off the module RemovetheModulefromthe Chassis Complete the following steps to remove a module from its chassis 1 Push in the top and bottom locking tabs 2 Pull the module out of the chassis IMPORTANT Do not wrap your fingers around the entire door A shock hazard exists 20855 M 20856 M 20857 ...

Page 125: ...the ControlLogix ControlNet module see ControlNet Modules in Logix5000 Control Systems publication CNET UM001 For more information on the ControlLogix EtherNet IP bridge see EtherNet IP Modules in Logix5000 Control Systems User Manual publication ENET UM001 Topic Page Create a New Module 126 Edit the Configuration 129 Copy Channel Configuration 139 View the Module Tags 141 IMPORTANT This chapter d...

Page 126: ...u create a Logix Designer application project complete the following steps to create a module in the project 1 Right click I O Configuration and choose New Module 2 Select the module and click Create 3 Click OK to accept the default major revision The New Module dialog box appears TIP You can verify the module s revision in RSLinx Classic software ...

Page 127: ...al tab name the module Make sure that the Slot number in the configuration matches the physical slot number of the chassis housing the module The Description field is optional 5 Click OK to accept the module s default configuration The rest of this section describes how to change module configuration to work as needed in your system ...

Page 128: ...e available on the Module Definition dialog box Series Module hardware series Revision Module firmware revision Electronic Keying For more information see page 28 Connection For more information see page 129 IMPORTANT When you use the Listen Only connection format only the following tabs appear in the New Module dialog box General Connection Module Info Time Sync For more information on using the ...

Page 129: ...s section General described beginning on page 127 Connection Module Info Time Sync The following tabs show fields specific to the module type Configuration Calibration Alarm Configuration Available with only the 1756 IF8I and 1756 IRT8I modules CJ Configuration Available with only the 1756 IRT8I and 1756 IT16 module Limit Configuration Available with only the 1756 OF8I module Connection Type Defin...

Page 130: ...tion about the RPI see page 15 Inhibit the module For more information on inhibiting the module see page 27 Configure whether a connection failure while the controller is in Run module causes a major or minor fault The Module Fault area of the Connection tab is useful during module troubleshooting For more information on the Module Fault area see page 169 The configurable parameters on this tab do...

Page 131: ...ds on the Configuration tab are specific to the module type The following are examples of tasks you complete via this tab Select an input or output type Select a module s operating range Define scaling parameters 1756 IF8IModule For information on this tab s configurable parameters see Chapter 3 1756 IF8I Isolated Analog Input Module on page 41 ...

Page 132: ...ntrolLogix Analog I O Modules 1756 IRT8IModule For information on this tab s configurable parameters see Chapter 4 Temperature sensing Analog Modules on page 59 1756 IR12Module For information on this tab s configurable parameters see Chapter 4 Temperature sensing Analog Modules on page 59 ...

Page 133: ...s configurable parameters see Chapter 4 Temperature sensing Analog Modules on page 59 1756 OF8IModule For information on this tab s configurable parameters see Chapter 5 1756 OF8I Isolated Analog Output Module on page 89 IMPORTANT Changes to the HighEngineering and Low Engineering values do not automatically change the Clamp values on the Limit Configuration tab ...

Page 134: ...alibration tab lets you recalibrate the module Calibration corrects any hardware inaccuracies on a module For information on how to configure each module type see Chapter 8 Calibrate the ControlLogix Analog I O Modules on page 143 1756 IF8IModule IMPORTANT The analog I O modules do not require recalibration after operating in an application ...

Page 135: ...Rockwell Automation Publication 1756 UM540E EN P December 2017 135 ConfigureControlLogix Analog I O Modules Chapter 7 1756 IRT8IModule 1756 IR12Module ...

Page 136: ...136 Rockwell Automation Publication 1756 UM540E EN P December 2017 Chapter 7 Configure ControlLogix Analog I O Modules 1756 IT16Module 1756 OF8IModule ...

Page 137: ...support alarms The fields on the Alarm Configuration tab are specific to the module type The following are examples of tasks you complete via this tab Disable alarms Set alarm parameters Set rate limits This tab is available only for input modules 1756 IF8IModule For information on this tab s configurable parameters see Chapter 3 1756 IF8I Isolated Analog Input Module on page 41 ...

Page 138: ...eters see Chapter 4 Temperature sensing Analog Modules on page 59 CJConfigurationTab The CJ Configuration tab is available with the 1756 IRT8I and 1756 IT16 modules You use this tab to configure the cold junction compensation option IMPORTANT If all channels on the module use the RTD input type the Cold Junction Disable option appears dimmed and the checkbox is automatically checked ...

Page 139: ...ation across multiple channels on a module You can configure channel parameters on Module Properties dialog box and copy them to other channels Copy Channel Configuration is available on the Module Properties dialog box tabs as follows for the ControlLogix analog I O modules 1756 IF8I 1756 IRT8I 1756 IR12 1756 IT16 modules Configuration tab Alarm Configuration tab 1756 OF8I module Configuration ta...

Page 140: ...o the selected channels Complete the following steps to copy channel configuration from one channel to others 1 Verify that your controller is not in Run mode If so change it to Remote Run Remote Program or Program mode as applicable to your system 2 Access the Module Properties dialog box 3 Click the Configuration tab and make the required configuration changes In this example the channel 0 confi...

Page 141: ... tags in a module 1 In the Controller Organizer right click Controller Tags and choose Monitor Tags The Controller Tags dialog box appears with data 2 Click the symbols to view module tags as shown in the following graphic For more information on module tags see Appendix A Analog I O Module Tag Definitions on page 181 TIP If desired you can apply configuration changes to the first channel as descr...

Page 142: ...142 Rockwell Automation Publication 1756 UM540E EN P December 2017 Chapter 7 Configure ControlLogix Analog I O Modules Notes ...

Page 143: ...with the channels grouped together If you choose to calibrate your module we recommend the following Calibrate all channels on your module each time you calibrate This maintains consistent calibration readings and improves module accuracy Use an extra 1756 TBCH RTB to calibrate your module Topic Page Difference between Calibrating an Input Module and an Output Module 144 Calibrate the Input Module...

Page 144: ...ce to its value Table 23 Calibration Instrumentation Specifications Module Channel Input Type Recommended Instrument Specifications 1756 IF8I Current mA 1 00 20 00 mA source 100 nA current Voltage V 0 10V source 2 μV voltage 1756 IRT8I RTD 1 0 487 0 Ω resistors 0 01 Thermocouple mV 0 100 mV source 0 5 μV 1756 IR12 RTD 1 0 487 0 Ω resistors 0 01 1756 IT16 Thermocouple mV 0 100 mV source 0 5 μV 1756...

Page 145: ...alibration are not being used for active control Via the Module Profile place the controller in Program mode either Remote Program or Program mode or Inhibit the connection from the controller This is required to calibrate the 1756 IR12 or the 1756 IT16 via the Profile as they are input only modules that do not have a sense of Program Mode These analog modules cannot be calibrated via the Module P...

Page 146: ... resistors and the A D convertor The 1756 IF8I offers three input voltage ranges 10 10V 0 5V 0 10V Follow these steps to calibrate your 1756 IF8I module 1 Connect your voltage calibrator to all module channels being calibrated 2 Go online with your project IMPORTANT This section shows how to calibrate the 1756 IF8I modules for use with only voltage inputs Thecalibrationprocessisgenerallythesameify...

Page 147: ...nfiguration tab make sure the Input Type for each channel to be calibrated is set to Voltage V The input range selection does not impact calibration 5 Make sure that the controller is in Program Mode or the Connection is Inhibited available via the Connection tab The 1756 IR12 and 1756 IT16 modules can only be calibrated when the Connection is Inhibited 6 On the Calibration tab click Start Calibra...

Page 148: ...brated and click Next The Attach Low Reference Voltage Signals dialog box appears as shown below It indicates the channels are calibrated for a low reference and the range of the calibration 9 Set the calibrator for the low reference and apply it to the module 10 Click Next The Group Low Reference Results dialog box indicates the status of each channel after calibrating for a low reference ...

Page 149: ... to exit calibration The channel remains calibrated to the accuracy level achieved at factory calibration The Attach High Reference Voltage Signals dialog box appears as shown below It indicates the channels are calibrated for a high reference and the range of the calibration 12 Set the calibrator for the high reference voltage and apply it to the module 13 Click Next The Group High Reference Resu...

Page 150: ...achieved at factory calibration 15 When the Calibration Completed dialog box appears click Finish Calibrate the Temperature sensing Modules You can calibrate the 1756 IRT8I 1756 IR12 and 1756 IT16 modules for use with the following input types RTD Ohms 3 and 4 wire types the 4 wire type is available only for the 1756 IRT8I module Thermocouple mV Note You must inhibit the 1756 IR12 and 1756 IT16 mo...

Page 151: ...Properties 3 On the Configuration tab make sure that the Input Type for each channel to be calibrated is set to the same RTD input type The sensor type selection does not impact calibration The1756 IRT8I module has eight channels the 1756 IR12 module has 12 and 1756 IT16 module has 16 IMPORTANT After you connect either precision resistors to the 1756 IRT8I module we recommend that you wait for a m...

Page 152: ...onnection tab The 1756 IRT8I 1756 IR12 and 1756 IT16 modules can only be calibrated when the Connection is Inhibited 5 On the Calibration tab click Start Calibration 6 When the warning appears click OK 7 Select the channels to be calibrated and click Next The Attach Low Reference Ohms Sources dialog box appears as shown in step 9 It indicates the channels are calibrated for a low reference and the...

Page 153: ...ion The channel remains calibrated to the accuracy level achieved at factory calibration The Attach High Reference Ohms Sources dialog box appears It indicates the channels are calibrated for a high reference and the range of the calibration 11 Connect a 487 Ω precision resistor to all module channels being calibrated IMPORTANT After you connect the precision resistor we recommend that you wait fo...

Page 154: ...atus of each channel after calibrating for a high reference 13 If channels are OK click Next If any channel reports an error return to step 11 and click Retry until the status is OK If the error persists indefinitely click Stop to exit calibration The channel remains calibrated to the accuracy level achieved at factory calibration 14 When the Calibration Completed dialog box appears click Finish ...

Page 155: ...ant to calibrate and choose Properties 4 On the Configuration tab make sure the Input Type for each channel to be calibrated is set to Thermocouple mV The sensor type selection does not impact calibration 5 Make sure that the controller is in Program Mode or the Connection is Inhibited available via the Connection tab The 1756 IRT8I module can only be calibrated when the Connection is Inhibited IM...

Page 156: ...lick Start Calibration 7 When the warning appears click OK 8 Select the channels to be calibrated and click Next The Attach Low Reference Voltage Signals dialog box appears as shown below It indicates the channels are calibrated for a low reference and the range of the calibration 9 Set the calibrator for the low reference and apply it to the module ...

Page 157: ... Next If any channel reports an error return to step 9 and click Retry until the status is OK If the error persists indefinitely click Stop to exit calibration The channel remains calibrated to the accuracy level achieved at factory calibration The Attach High Reference Voltage Signals dialog box appears as shown below It indicates the channels are calibrated for a high reference and the range of ...

Page 158: ...s calibrated to the accuracy level achieved at factory calibration 15 When the Calibration Completed dialog box appears click Finish Calibrate the Output Module You can calibrate the 1756 OF8I module for use with the following output types Current mA Voltage V IMPORTANT This section shows how to calibrate the 1756 OF8I modules for use with only current outputs Thecalibrationprocessisgenerallythesa...

Page 159: ...evel and record the results to account for any module inaccuracies Follow these steps to calibrate your module 1 Connect your current meter to all module channels being calibrated 2 Go online with your project 3 Right click the module you want to calibrate and choose Properties 4 On the Configuration tab make sure the Output Type for each channel to be calibrated is set to Current mA 5 Make sure t...

Page 160: ...lLogix Analog I O Modules 6 On the Calibration tab click Start Calibration 7 When the warning appears click OK 8 Select the channels to be calibrated and click Next The Output Reference Signals dialog box appears It indicates the channels are calibrated for a low reference and the calibration range ...

Page 161: ...ce value of each channel individually 11 In the Recorded Reference mA column record the measured value for each channel that was recorded and click Next The Group Low Reference Results dialog box indicates the status of each channel If the status is not OK for any channels repeat the calibration process 12 Click Next The Output Reference Signals dialog box appears as shown below It indicates the c...

Page 162: ... 15 In the Recorded Reference mA column record the measured value for each channel that was recorded and click Next The Group High Reference Results dialog box indicates the status of each channel If the status is not OK for any channels repeat the calibration process If the error persists indefinitely click Stop to exit calibration The channel remains calibrated to the accuracy level achieved at ...

Page 163: ...Rockwell Automation Publication 1756 UM540E EN P December 2017 163 Calibrate the ControlLogix Analog I O Modules Chapter 8 17 Click Finish ...

Page 164: ...164 Rockwell Automation Publication 1756 UM540E EN P December 2017 Chapter 8 Calibrate the ControlLogix Analog I O Modules Notes ...

Page 165: ...s in a normal operating state in Run mode Flashing green The module passed internal diagnostics and is not actively controlled or the connection is open and the controller is in Program mode Flashing red Previously established communication has timed out Steady red Replace the module ST Steady yellow The channel is operating as expected Flashing yellow The channel is being calibrated Off The chann...

Page 166: ...mation on these causes see Chapter 4 Temperature sensing Analog Modules on page 59 Flashing red The channelis faultedchannelisbeingcalibrated Seetheprevious rowfor more information about faults Indicator Status Description OK Steadygreen The moduleis in a normal operating state in Run mode Flashing green The module passed internal diagnostics and is not actively controlled or the connection is ope...

Page 167: ...n page 59 Flashing red The channel is faulted and is being calibrated See the previous row for more information about faults Indicator Status Description OK Steadygreen The moduleis in a normal operating state in Run mode Flashing green The module passed internal diagnostics and is not actively controlled or the connection is open and the controller is in Program mode Flashing red Previously estab...

Page 168: ...ng The Logix Designer application indicates fault conditions in the following ways Warning signal on the main screen next to the module This occurs when the connection to the module is broken Message in a screen s status line On the Module Info tab in the Status section the Major and Minor Faults are listed along with the Internal State of the module ...

Page 169: ...so reported in the Tag Editor Diagnostic faults are reported only in the Tag Editor The Value field indicates a fault with the number 1 Fault Type Determination When you are monitoring a module s configuration properties in the Logix Designer application and receive a Communication fault message the Connection tab indicates the type of fault under Module Fault ...

Page 170: ... 1756 IRT8I and 1756 IT16 Modules Incorrect Temperature Readings 1756 IRT8I and 1756 IR12 Modules Incorrect RTD Readings 1756 IF8I Module Incorrect Input Voltage Current Readings 1756 OF8I Module Incorrect Output Voltage Current Readings 1756 IRT8I and 1756 IT16 Modules Incorrect Temperature Readings To determine the cause of the incorrect reading first determine the nature of the incorrect readin...

Page 171: ...ermocouple and wiring are likely the cause and must be checked again If the emulator temperature report is incorrect the module hardware configuration or the software application are likely the cause In this case check the Logix Designer application project We highly recommend using a thermocouple emulator for initial troubleshooting In lieu of an emulator you can apply a millivolt signal to the i...

Page 172: ...p of the thermocouple signal An oscilloscope shows the magnitude of the offset Disconnect all but one thermocouple to see if channels are affecting each other that is there is bleed over Module is in calibration mode Incorrect readings can be a result of the module being calibrated when the reading occurs Make sure that the module is not in calibration mode Thissymptomismodule dependant butingener...

Page 173: ...rs indicate that the module is communicating as expected and all module wiring is correct complete the following tasks a Disconnect the RTD from the channel in question b Connect an RTD emulator directly to the channel in question The emulator provides voltage at the channel that is equivalent to the voltage expected for the RTD type it is emulating If the ohms value reports back correctly then th...

Page 174: ...condition is not detected when wires are simultaneously disconnected from only IN_x RTD C and IN_x RTD D terminals All wires are disconnected from the module If bullet 1 the following occurs Input data for the channel changes to the lowest scaled temperaturevalueassociated withtheselectedsensortype The I Ch x Underrange tag is set to 1 x represents the channel number If bullets 2 or 3 the followin...

Page 175: ... working module diagnosethehardwarefailureandcorrectit Ifmorethan one channel is experiencing the incorrect readings in this case disconnect allthermocouplesexceptone Thiscanhelpdetermine if it is external hardware or the module itself is the cause Grounded RTD Due to the module s excitation current traveling on an RTD lead that is grounded there can be errant ground paths which would cause inaccu...

Page 176: ...l value of the selected operational range The I Ch x Overrange x channel number tag is set to 1 Check the wiring to verify that all wires are connected Verify that the 4 wire transmitter if used is powered When the module is used in Current mode and any of the following A wire is disconnected from the module The RTB is disconnected from the module The external loop power is not wired correctly not...

Page 177: ...e channel is experiencing the incorrect readings in this case disconnect all inputs except one This can help determine if it is external hardware or the module itself is the cause One of the following Short circuit condition Typically caused by a short between terminal With this module the short is between terminals IN_x I SRC and RTN_x where x is the channel number Sourcing overcurrent condition ...

Page 178: ...ate a problem For more information on the 1756 OF8I module status indicators page 167 2 Make sure wiring is intact and correct current or voltage input wired to the corresponding terminals and with proper polarity 3 If the status indicators indicate that the module is communicating as expected and all module wiring is correct complete the following tasks a Disconnect the load from the channel in q...

Page 179: ...dule installation One of the following Incorrect readings at initial module installation and configuration are often the result of installation and configuration errors Incorrect readings at installation of an existing previously working module are more likely the result of a hardware failure One of the following If error is occurring on a new module installation and configuration make sure that t...

Page 180: ...180 Rockwell Automation Publication 1756 UM540E EN P December 2017 Chapter 9 Troubleshoot Your Module Notes ...

Page 181: ... connection type There are three sets of tags for each module Configuration Input Output Access the Tags You can view tags from the Tag Editor Complete the following steps 1 Open your Logix Designer application project 2 Right click Controller Tags and choose Monitor Tags Topic Page Access the Tags 181 1756 IF8I Module Tags 183 1756 IRT8I Module Tags 189 1756 IR12 Module Tags 196 1756 IT16 Module ...

Page 182: ...182 Rockwell Automation Publication 1756 UM540E EN P December 2017 Appendix A Analog I O Module Tag Definitions 3 Open the tags as needed to view specific tags ...

Page 183: ...x ProcessAlarmLatch BOOL Latches Process alarms If this tag is set to latch the process alarms the I Ch x LLAlarm I Ch x LAlarm I Ch x HAlarm or I Ch x HHAlarm tags do not clear until explicitly unlatched 0 Latching disabled default 1 Latching enabled Ch x RateAlarmLatch BOOL Latches the Ramp alarm If this tag is set to latch the ramp alarm the I Ch x RampAlarm tag does not clear until explicitly ...

Page 184: ...values correspond to Engineering values see page 32 0 0 default In voltage applications default C Ch x LowSignal tag value Ch x HighEngineering REAL High engineering scaling point Corresponds to the C Ch x HighSignal tag value For more information on how Signal values correspond to Engineering values see page 32 100 0 default In voltage applications default C Ch x HighSignal tag value Ch x LLAlarm...

Page 185: ...ccurate and cannot be trusted for use in the application If the tag is set to 1 you cannottrustthedatareported Youmusttroubleshootthe module to correct the cause of the inaccuracy 0 Good 1 Bad Ch x Uncertain BOOL Indicates that channel data can be inaccurate but it is not known to what degree of inaccuracy If the tag is set to 1 you know the data can be inaccurate but you can troubleshoot the modu...

Page 186: ...tes that an invalid Low Reference signal has been sampled on this channel You must correct this condition to successfully calibrate the module If calibration is aborted with an invalid Low Reference signal the I Ch x CalibrationFault tag is set for this channel until a successful calibration is performed or a reset or RIUP occurs 0 InvalidLowReferencesignal has notbeen sampled on this channel 1 In...

Page 187: ... timestamp indicating when all 8 channels were last sampled in terms of CIPSync time CIPSync Timestamp data RollingTimestamp DINT 16 bit timestamp that rolls from 0 32 767 ms Compatible with existing PID PIDE instructions to automatically calculate sample deltas With this module this PID PIDE instruction uses the RPI because there is no RTS available For more information on the Rolling Timestamp s...

Page 188: ...ow Alarm remains latched 1 Low Alarm unlatches Ch x HAlarmUnlatch BOOL Unlatchesalatched High Alarm at the firstinstance of the bit transitioning from 0 to 1 For example if the controller sends data for this tag in successive instances as 0 1 1 1 1 the module unlatches the High alarm when it receives the first 1 The following instances of this tag value being 1 do not impact the High alarm unlatch...

Page 189: ... 0 default Table 30 1756 IF8I Module Output Tags continued Tag Name Data Type Definition Valid Values IMPORTANT Each application s series of tags varies but no input module application contains any tags that are not listed here Table 31 1756 IRT8I Module Configuration Tags Tag Name Data Type Definition Valid Values RemoteTermination BOOL Indicates CJC Sensor is connected remotely or locally If the...

Page 190: ...tionship between this setting and the RPI setting FormoreinformationonNotchFilter seepage 61 0 10 Hz 1 50 Hz 2 60 Hz 3 100 Hz 5 1000 Hz 6 20 Hz 7 15 Hz 8 500 Hz 9 5000 Hz 10 5 Hz Ch x AlarmDisable BOOL Disables all alarms on the module 0 Enabled 1 Disabled default Ch x ProcessAlarmLatch BOOL Latches Process alarms If this tag is set to latch the process alarms the I Ch x LLAlarm I Ch x LAlarm I Ch...

Page 191: ...of Ω 0 default Ch x DigitalFilter INT Time Constant for a First Order Lag filter 0 32 767 ms 0 default Ch x RateAlarmLimit REAL Rate of change in Engineering Units Second If the absolute value of the change between samples divided by the sample time exceeds this value the I Ch x RateAlarm tag is sets Any positive value 0 0 default This value represents no change between samples Ch x LowSignal REAL...

Page 192: ...ncValid BOOL Indicates whether the module is synchronized to a valid CIP Sync time master on the backplane 0 CIP Sync is not available 1 CIP Sync is available CIPSyncTimeout BOOL Indicates whether a valid time masteron the backplane has timed out 0 A valid time master has not timed out 1 A valid time master was detected on the backplane but the time master has timed out The module is currently usi...

Page 193: ...atched or if the I Ch x Data tag value is within Deadband 0 Alarm is not triggered 1 Alarm is set Ch x HHAlarm BOOL Triggered when theI Ch x Data tag value is greater than the C Ch x HHAlarmLimit tag value If latched this tag remains set until unlatched or if the I Ch x Data tag value is within Deadband 0 Alarm is not triggered 1 Alarm is triggered Ch x RateAlarm BOOL Triggered when the absolute c...

Page 194: ...d Ch x RateOfChange REAL Indicates the change in channel data since last sample in Engineering Units Second Value representing the rate of change Ch x Data REAL Indicates channel data in scaled Engineering units Any positive or negative value Determined by how you set the scaling parameters on the channel For more information seeScaling on page 32 Timestamp DINT 2 64 bit timestamp value that indic...

Page 195: ...larm when it receives the first 1 The following instances of this tag value being 1 do not impact the High High alarm unlatching 0 High High Alarm remains latched 1 HHAlarm unlatches Ch x RateAlarmUnlatch BOOL Unlatches a latched Rate Alarm at the first instance of the bit transitioning from 0 to 1 For example if the controller sends data for this tag in successive instances as 0 1 1 1 1 the modul...

Page 196: ...SINT Indicates the channel s operating range 6 0 500 Ω 7 0 1000 Ω 8 0 2000 Ω 9 0 4000 Ω Ch x SensorType SINT RTD sensor type used on the channel The Input Type connected to the channel determine the sensor type 0 Ω 1 100Ω PT 385 2 200Ω PT 385 3 500Ω PT 385 4 1000Ω PT 385 5 100Ω PT 3916 6 200Ω PT 3916 7 500Ω PT 3916 8 1000Ω PT 3916 9 10Ω CU 427 10 120Ω NI 672 11 100Ω NI 618 12 120Ω NI 618 13 200Ω N...

Page 197: ...OL Used with the TempEnglish tag for the same channel to determine the temperature units for the channel when linearizing non zero sensor type B5 0 Familiar default 1 Absolute IMPORTANT See the TempEnglish tag Valid Values description for moreinformationonusingthistag s value Ch x TenOhmOffset INT Specific offset for 10 Ohm Copper Sensor Type Value is measured in Hundredthsof Ωwithtwo implied deci...

Page 198: ...ostic Assembly to get more data on the jump if precise time tracking is important to your application B2 Ch x Fault BOOL Indicates the quality of Input Data B0 0 Good 1 Bad Ch x Uncertain BOOL Indicates the Input Data can be imperfect B1 0 Good 1 Uncertain Ch x Underrange BOOL Input is beneath absolute minimum for this channel If temperature set when beneath minimum for that SensorType B2 Ch x Ove...

Page 199: ...is channel is complete and the Calibrating state has been exited This tag remains set after valid calibration as long as connection is open B15 Ch x Data REAL Indicates channel data in ohms or Temperature Any positive or negative value Determined by how you set the scaling parameters on the channel For more information seeScaling on page 32 Timestamp DINT 2 64 bit timestamp value that indicates wh...

Page 200: ...ences exist between the CJC sensors Correction factors are applied internally to account for the differences 0 CJC sensor is connected locally via the RTB 1 CJC sensor is connected remotely default CJDisable BOOL RemovescoldjunctioncompensationfromThermocouple calculations By defaultmodule configuration cold junction is compensated for each Thermocouple channel returning temperature 0 CJ compensat...

Page 201: ...nations are possible 00 Celsius 01 Fahrenheit 10 Kelvin 11 Rankine Ch x TempAbsolute BOOL Used with the TempEnglish tag for the same channel to determine the temperature units for the channel when linearizing non zero sensor type 0 Familiar default 1 Absolute IMPORTANT See the TempEnglish tag Valid Values description for moreinformationonusingthistag s value Ch x DigitalFilter INT Determines the t...

Page 202: ... B2 CJ x Fault BOOL Quality of channel data 0 Good 1 Bad CJ x Uncertain BOOL Channel data can be imperfect 0 Good 1 Uncertain CJ x Underrange BOOL Indicates that Cold Junction Channel x is below 0 C B2 CJ x Overrange BOOL Indicates that Cold Junction Channel x is above 86 C B3 CJ 0 Data REAL Indicates the CJ input data in C Ch x Fault BOOL Indicates the quality of Input Data 0 Good 1 Bad Ch x Unce...

Page 203: ...4 Ch x CalSuccessful BOOL Indicates calibration on this channel is complete and the Calibrating state has been exited This tag remains set after valid calibration as long as connection is open B15 Ch x Data REAL Indicates channel data in Ohms or Temperature Any positive or negative value Determined by how you set the scaling parameters on the channel For more information seeScaling on page 32 Time...

Page 204: ...lear until explicitly unlatched 0 Latching disabled default 1 Latching enabled Ch x FaultMode BOOL Determines channel action when a fault occurs for example a connection loss At the fault occurrence the module holds its last state or transitions to the channel value used in the C Ch x FaultValue tag If configured to Hold Last State the channel Holds Last State for the length of time set by the C C...

Page 205: ... is lost C Ch x FaultMode tag is enabled Any 0 0 default Ch x FaultFinalState REAL Value to which the channel changes if the following events exist Connection is lost Time defined by the C Ch x FaultValueStateDuration tag has been exceeded Any 0 0 default Ch x ProgValue REAL Value to which the channel changes if the following events exist Module transitions to Program mode C Ch x ProgMode tag is e...

Page 206: ...ed out The module is currently using its local clock and can be drifting away from the last known time master CIPSyncOffsetJump BOOL Indicatesasignificantjump thatis 1msorgreater inthe CST and CIP Sync times sent from the Time Master to the module The Time Master sends the CST and CIP Sync times to the module every second When a significant jump occurs this tag value becomes 1 but changes to 0 a s...

Page 207: ...ondition to successfully calibrate the module If calibration is aborted with an invalid Low Reference signal the I Ch x CalibrationFault tag is set for this channel until a successful calibration is performed or the module is Reset or RIUP ed 0 Invalid Low Reference value has not been received on this channel 1 Invalid Low Reference value has been received on this channel Ch x CalGoodHighRef BOOL ...

Page 208: ... Indicates that Owner A is Ready to claim outputs ROO B8 OwnerBConnected BOOL Owner B Connected Indicates that Owner B is connected B9 OwnerBClaim BOOL Owner B Claim Indicates that Owner B is claiming outputs COO B10 OwnerBReady BOOL Owner B Ready Indicates that Owner B is Ready to claim outputs ROO B11 RollingTimestamp DINT 16 bit timestamp that rolls from 0 32 767 ms Compatible with existing PID...

Page 209: ...atches the High Limit alarm when it receives the first 1 The following instances of this tag value being 1 do not impact the High Limit alarm unlatching 0 Alarm remains latched default 1 Alarm is unlatched Ch x RampAlarmUnlatch BOOL Unlatches a latched Ramp alarm at the first instance of the bit transitioning from 0 to 1 For example if the controller sends data for this tag in successive instances...

Page 210: ...sed BOOL DatavaluechangethatindicatesthattheO Ch x Datatag contains the recorded High Reference value for the channel that is used by the module in Calibration 0 Not sending Cal High Reference 1 Sending recorded Calibration High Reference Signal in Output Data for Calibration Verification Ch x CalFinishCalibration BOOL Data value change that triggers the channel to complete the Calibration procedu...

Page 211: ...utputs ROO OwnerBConnected BOOL B9 OwnerB is Connected OwnerBClaim BOOL B10 Owner B is claiming Outputs COO OwnerBReady BOOL B11 Owner B is Ready to claim Outputs ROO Table 42 New Redundant Output Tag Description 1756 OF8I Field Data Type Legal Values Usage OwnerClaim BOOL B0 0 Not Requesting Ownership 1 Claim Ownership When set indicates that the controller wants to Claim Ownership of the redunda...

Page 212: ...as Pt 3 or PressureValveTank3 Figure 33 Array Data Structure Other digital I O modules use a flat data structure In this type of structure only one instance of a tag exists for a module For example in Figure 34 only one instance of each tag appears under the input module in slot 3 To reference or copy data for an individual point you specify the tag name followed by a bit number such as Data 0 or ...

Page 213: ...F Refer to the configuration spreadsheet in Sizing the ControlLogix Power Supply Knowledgebase Technical Note ID 22753 The 5 1V DC and 24V DC currents are used together to calculate the maximum backplane power dissipation The following table lists the current draw of each module Cat No Current Draw at 5 1V DC Current Draw at 24V DC 1756 IF8I 200 mA Voltage Non sourcing Current mode 150 mA Sourcing...

Page 214: ...ts Current 24V DC mA Power 24 V DC Watts 0 x 5 1V x 24V 1 x 5 1V x 24V 2 x 5 1V x 24V 3 x 5 1V x 24V 4 x 5 1V x 24V 5 x 5 1V x 24V 6 x 5 1V x 24V 7 x 5 1V x 24V 8 x 5 1V x 24V 9 x 5 1V x 24V 10 x 5 1V x 24V 11 x 5 1V x 24V 12 x 5 1V x 24V 13 x 5 1V x 24V 14 x 5 1V x 24V 15 x 5 1V x 24V 16 x 5 1V x 24V TOTALS mA W mA W Do not exceed the 5 1V DC current of 10 A for the 1756 Px72 power supply or 13 A...

Page 215: ...h 8 channel analog I O modules We recommend that you use the 8 channel AIFMs for example 1492 AIFM8S 3 in your application whenever possible Module Cat No Operating Mode AIFM Cat No Fixed Terminal Block AIFM Cat No RTB Socket Assembly Pre wired Cable Cat No where x Cable Length 1756 IF8I Current Internal or External Source Loop Current 1492 AIFM8S 3 1492 RAIFM8S 3 1492 ACABLExYA Current External L...

Page 216: ...216 Rockwell Automation Publication 1756 UM540E EN P December 2017 Appendix C 1492 Analog Interface Modules Notes ...

Page 217: ...756 OF8I module 144 channel offset 1756 OF8I module 90 133 circuit diagrams 1756 IF8I module 54 current input 54 sourcing current input 55 voltage input 54 1756 IRT8I module 80 3 wire RTD input 80 4 wire RTD input 80 thermocouple input 80 1756 OF8I module current output 94 voltage output 94 Claim Owner Output 98 clamp limits 1756 OF8I module 92 139 clamping 1756 OF8I module 91 139 cold junction co...

Page 218: ...nput types 1756 IF8I module 41 131 1756 IR12 module 59 132 1756 IRT8I module 59 132 1756 IT16 module 59 133 install the module 109 internal power source 1756 IF8I module 42 K keying electronic 128 mechanical 113 L latch alarms 26 limiting 1756 OF8I module 91 listen only connections 20 Logix Designer application 26 M migrate 6 channel to 8 channel 29 migrration emulation mode 29 module block diagra...

Page 219: ... IRT8I module 68 1756 IT16 module 68 sensor types 1756 IR12 module 60 71 132 1756 IRT8I module 60 71 132 1756 IT16 module 60 71 133 synchronized sampling 1756 IF8I module 52 131 1756 IR12 module 74 132 1756 IRT8I module 74 132 1756 IT16 module 74 133 temperature units 1756 IR12 module 71 132 1756 IRT8I module 71 132 1756 IT16 module 71 133 underrange overrange detection 1756 IF8I module 46 1756 IR...

Page 220: ... IT16 module 60 71 133 software event tasks 17 Logix Designer application 26 module calibration 143 module configuration 125 module tags 181 1756 IF8I module 183 1756 IR12 module 196 1756 IRT8I module 189 1756 IT16 module 200 1756 OF8I module 204 RSLogix 5000 26 troubleshooting 168 spring clamp RTB 118 status indicators 1756 IF8I module 165 1756 IR12 module 166 1756 IRT8I module 166 1756 IT16 modu...

Page 221: ...utomation Publication 1756 UM540E EN P December 2017 221 Index voltage input 57 1756 IRT8I module 3 wire RTD input 81 4 wire RTD input 82 thermocouple input 83 1756 OF8I module current output 95 voltage output 96 ...

Page 222: ...222 Rockwell Automation Publication 1756 UM540E EN P December 2017 Index Notes ...

Page 223: ......

Page 224: ...irectly to a technical support engineer http www rockwellautomation com global support direct dial page Literature Library Installation Instructions Manuals Brochures and Technical Data http www rockwellautomation com global literature library overview page Product Compatibility and Download Center PCDC Get help determining how products interact check features and capabilities and find associated ...

Page 225: ...High Resolution Analog I O Modules User Manual ...

Page 226: ......

Search results

Summary of Contents for 1756-IF8I

Reviews:

Brands by name

Popular brands

Allen-Bradley 1756-IF8I, User Manual

Search results

Summary of Contents for 1756-IF8I

Reviews:

Brands by name

Popular brands