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Owner’s Guide 0300199-01 Rev. D 

Chapter 1

 

 

Module Overview 

 

This chapter describes the 1756sc-CTR4 and 1756sc-CTR8 and the conformally 

coated 1756sc-CTR4/1756sc-CTR8K counter modules and explains how the 

ControlLogix controller reads analog input data from the modules.

 Other than the 

conformal coating, the modules are identical so all information applicable to the 

earlier modules applies to the K versions.

 Read this chapter to familiarize 

yourself further with counter module. This chapter covers:

 

•

 

General description and hardware features. 

•

 

An overview of system and module operation. 

 

This module is designed exclusively for use in the Allen-Bradley ControlLogix 

1756 I/O rack systems. The module reads AC and DC pulse information from 

external sensors and stores the data in its image table for retrieval by all 

ControlLogix processors. 
Following is a list of features available on the CTR8 module that allow their use 

in a wide variety of applications: 

•

 

Removal and insertion under power (RIUP)

−

a system feature that allows you 

to remove and insert modules while chassis power is applied. 

•

 

Producer/consumer communications

−

an intelligent data exchange between 

modules and other system devices in which each module produces data 

without having been polled. 

•

 

System timestamp of data–64-bit system clock places a timestamp on the 

transfer of data between the module and its owner-controller within the local 

chassis. 

•

 

IEEE 32-bit floating point format. 

•

 

On-Board Features, such as custom User Scaling, Analog and Digital 

Filtering, and Under/Over Detection. 

 

The 1756-CTR supports both AC and DC input signal types. The module input 

type is configured on a channel-pair basis. Each pair must be configured for the 

same input type. 

 

The module fits into any single slot for I/O modules in a ControlLogix modular 

system. The module has a unique generic profile which may be configured using 

your RSLogix 5000 programming software. The module uses one removable 

terminal block that provides connections for the eight input channels. The 

Содержание 1756-CTR8

Страница 1: ...Owner s Guide 0300310 02A...

Страница 2: ...No patent liability is assumed by Spectrum Controls Inc with respect to the use of any of the information products circuits programming or services referenced herein The information in this owner s g...

Страница 3: ...G 2 3 SECTION 2 9 INSTALLING THE MODULE 2 3 SECTION 2 10 KEYING THE REMOVABLE TERMINAL BLOCK 2 5 SECTION 2 11 WIRING THE REMOVABLE TERMINAL BLOCK 2 6 SECTION 2 12 PREPARING AND WIRING THE CABLES 2 7 S...

Страница 4: ...MODE 6 3 SECTION 6 3 INSTALLATION RECOMMENDATIONS 6 4 HIGH IMPEDANCE INPUTS 6 4 FILTER FREQUENCY SETTINGS LOW VOLTAGE DIRECTIVE 6 4 Debounce Filter 6 4 METER PROVING 6 4 CHAPTER 7 TROUBLESHOOTING 7 1...

Страница 5: ...Manual Use this guide to install configure and troubleshoot your ControlLogix 1756sc CTR8 module The 1756sc CTR8 Module mounts to an Allen Bradley ControlLogix 1756 Controller chassis The module uses...

Страница 6: ...this manual Bulleted lists like this one provide information not procedural steps Numbered lists provide sequential steps or hierarchical information Italic type is used for emphasis Bold type identi...

Страница 7: ...ControlLogix CTR8 Counter Module vii Owner s Guide 0300199 01 Rev D NOTE Identifies information that is critical for successful application and understanding of the product...

Страница 8: ...viii ControlLogix CTR8 Counter Module Owner s Guide 0300199 01 Rev D...

Страница 9: ...their use in a wide variety of applications Removal and insertion under power RIUP a system feature that allows you to remove and insert modules while chassis power is applied Producer consumer commu...

Страница 10: ...ace You may install as many counter modules in the system as the power supply can support Channels 0 through 7 can receive AC or DC input signals Input types must be configured in channel pairs Each c...

Страница 11: ...able and control counter operation Cable length should be kept to a minimum Use the lowest capacitance shielded cable available We recommend that you use Belden 9501 or equivalent Table 1 2 Cable Spec...

Страница 12: ...1 4 Chapter 1 Module Overview Owner s Guide 0300199 01 Rev D...

Страница 13: ...an approved wrist strap grounding device Do not touch the backplane connector or connector pins Do not touch circuit components inside the module If available use a static safe workstation When not in...

Страница 14: ...uct is tested to meet Council Directive 2014 30 U ATEX and the following standards in whole or in part documented in a technical construction file EN 60079 0 Explosive atmospheres Part 0 Equipment Gen...

Страница 15: ...I O module mounts in a ControlLogix chassis and uses a Removable Terminal Block RTB to connect all field side wiring RTBs are not included with your purchase When ordering RTBs specify Allen Bradley P...

Страница 16: ...nded machine motion or loss of process control Cause an explosion in a hazardous environment Repeated electrical arcing also causes excessive wear to contacts on both the module and its mating connect...

Страница 17: ...position 4 on the module you cannot place a wedge shaped tab in 4 on the RTB or your RTB will not mount on the module We recommend that you use a unique keying pattern for each slot in the chassis 1 K...

Страница 18: ...ight angles To limit the pickup of electrical noise keep thermocouple RTD millivolt and milliamp signal wires as far from power and load lines as possible Ground the shield drain wire at only one end...

Страница 19: ...with a cable strap 4 Connect pairs of drain wires together Channels 0 and 1 Channels 2 and 3 Channels 4 and 5 Channels 6 and 7 Keep drain wires as short as possible 5 Connect the drain wires to the gr...

Страница 20: ...Chapter 2 Installing a ControlLogix 1756sc CTR8 SC Module Owner s Guide 0300199 01 Rev D The following figure shows the general terminal block layout The input signal type determines which pins are u...

Страница 21: ...ut modules however are limited to a single owner The I O configuration portion of RSLogix5000 generates the configuration data for each I O module in the control system whether the module is located i...

Страница 22: ...ntroller automatically sends the configuration data If the data is appropriate to the module found in the slot a connection is made and operation begins If the configuration data is not appropriate th...

Страница 23: ...RPI instructs the module to multicast the current contents of its on board memory when the RPI expires i e the module does not update its channels prior to the multicast NOTE IMPORTANT The RPI value...

Страница 24: ...twork and the module s RTS are asynchronous to each other This means there are Best and Worst Case scenarios as to when the owner controller will receive updated channel data from the module in a netw...

Страница 25: ...ontroller A and Controller B have both been configured to be the owner of the input module When the controllers begin downloading configuration data both try to establish a connection with the input m...

Страница 26: ...When changing configuration for a module with multiple owners we recommend the connection be inhibited To prevent other owners from receiving potentially erroneous data as described above the followi...

Страница 27: ...neric module profile must be used to add the CTR8 to a new or existing project An RSLogix 5000 sample project using the generic module profile is available for download on our website at www spectrumc...

Страница 28: ...lows 1 Drag and drop the CTR8 user defined data types from the sample project into your project There are three CTR8 user defined data types that need to be moved ConfigurationBlock InputBlock OutputB...

Страница 29: ...ration tags from the sample project into your project as follows 1 Right click on the Controller Tags item of the sample project and select edit 2 Right click on the Controller Tags item of your proje...

Страница 30: ...the configuration data and status tags for the CTR8 module The other tags are used for performing various functions with your module via ladder logic NOTE Be sure all tags are displayed before moving...

Страница 31: ...Left mouse inside the MainProgram ladder logic in the sample project and press CRTL A to select all the rungs 4 Drag and drop these rungs over and add them to the new routine s ladder logic NOTE Youw...

Страница 32: ...dule in the system The module has settings that are global and channel specific These are accessed via the controller tags Specific information regarding these tag settings may be found in Chapter 5 T...

Страница 33: ...r 5 Configuration Data and Status Tags 4 7 Owner s Guide 0300199 01 Rev D Specific information regarding these tags may be found in Chapter 5 These tags represent the process data values in their fina...

Страница 34: ...4 8 Chapter 4 Programming Your Module Owner s Guide 0300199 01 Rev D These tags report module status such as alarm conditions faults and errors...

Страница 35: ...TE The following format is used to describe tags Tag Name Range Data Type After changing the configuration tags in this chapter you must then send them to the module To do this you may perform any of...

Страница 36: ...NOTE IMPORTANT This value cannot be greater than the rollover value The maximum value is 1677215 when scaling is off When scaling is applied the maximum value is 1677215 K M RateSamplePeriod x 0 2000...

Страница 37: ...quadrature mode requires 2 input channels When a quadrature encoder is attached to an input channel pair A and B the count direction is determined by the phase angle between inputs A and B If A leads...

Страница 38: ...B The counter increments four times per quadrature cycle This mode determines how the gate behavior effects counter behavior 0 no store mode 1 store and continue mode 2 store wait and resume mode 3 s...

Страница 39: ...ute When a non zero Scale Factor value is set the scale calculation is always performed A value of zero must be written to the Scale Factor to disable this feature This counter value is divided by the...

Страница 40: ...t use analog or digital filter 1 use digital filter 25 kHz 2 use both digital 25 kHz and analog 12 kHz filters 3 use digital 25 kHz analog 12 kHz and debounce filter 30 Hz NOTE The digital and analog...

Страница 41: ...ResetCounter x 0 1 BOOL Resets counter 0 and begins counting 0 do not reset 1 reset LoadPreset x 0 1 BOOL Loads preset count value into counter x and begins counting 0 no action 1 load preset ResetFla...

Страница 42: ...nts register The maximum value is 1677215 when scaling is off When scaling is applied the maximum value is 1677215 K M Rate x 0 65 000 REAL Current rate value EnableEcho x 0 1 BOOL Software enabled fo...

Страница 43: ...this is also impacted by the gate and or enable line CountDirection x 0 1 BOOL 0 Counting up 1 Counting down CTRLimit x 0 1 BOOL This flag is latched when counts are equal to the user defined limit 0...

Страница 44: ...5 10 Chapter 5 Configuration Data and Status Tags Owner s Guide 0300199 01 Rev D...

Страница 45: ...e fly configuration changes Unlatch alarms Additional ladder logic and configuration samples may also be found on our web site www spectrumcontrols com Rung 0 This rung copies the configuration data C...

Страница 46: ...s Guide 0300199 01 Rev D Changing other tags will cause a 2 5 second delay in channel updates but the connection will not be interrupted Figure 6 1 Sample Ladder Logic You may use SetAttributeAll to a...

Страница 47: ...the counter continues to count The length of the material would then be determined by subtracting the correct count value from the stored value The gate behavior StorageMode 2 Store Wait Resume This...

Страница 48: ...a 12 24 V source for pull up Use of digital filters will ensure the best possible performance Recommendations are as follows Maximum Signal Input Filter 65 kHz No filtering 25 kHz 25 kHz digital filt...

Страница 49: ...wave form representing the start and stop transitions on the external gate enable and the associated pulses that the module would accumulate Storage mode 3 store reset wait start Given the above wave...

Страница 50: ...6 6 Chapter 6 Programming Examples Owner s Guide 0300199 01 Rev D...

Страница 51: ...gnostics but is not currently performing connected communication None OK Flashing Red Light Previously established communication has timed out Check controller OK Steady Red Light It is likely the mod...

Страница 52: ...the Module Info tab of the module s properties dialog The following LED display is used with ControlLogix analog input modules In addition to the LED display on the module RSLogix 5000 will alert you...

Страница 53: ...t information on the Module Properties screen When you are monitoring a module s properties dialog in RSLogix 5000 and receive a fault message the module fault area lists the type of fault The Additio...

Страница 54: ...r 5 and 7 0 030 n Invalid operational mode for channel n 0 040 n Invalid storage mode for channel n 0 050 n Invalid input range for channel n 0 060 n Invalid signal filter for channel n 0 070 n RateSa...

Страница 55: ...never possible keep the enclosure door closed Also regularly inspect the terminal connections for tightness Loose connections may cause a malfunctioning of the SLC system or damage to the components W...

Страница 56: ...ts Circuits installed on machinery for safety reasons like over travel limit switches stop push buttons and interlocks should always be hard wired to the master control relay These circuits should als...

Страница 57: ...ontrols Inc please ensure that the unit is enclosed in approved ESD packaging such as static shielding metallized bag or black conductive container Spectrum Controls Inc reserves the right to void the...

Страница 58: ...8 4 Chapter 8 Maintaining Your Module and Ensuring Safety Owner s Guide 0300199 01 Rev D...

Страница 59: ...f Gates 8 gate inputs I O Chassis Location Any I O module slot Conversion Method FPGA Input Filtering Three user selectable filters 12 kHz 25 kHz debounce Calibration Module does not require calibrati...

Страница 60: ...AC rms 50 VAC rms 50 VDC 50 VDC Input Range Max Frequency Min Duty Cycle Max Duty Cycle Min Pulse Width AC 50 mV 65 kHz NA NA NA AC 200 mV 65 kHz NA NA NA 5 VDC 65 kHz 30 60 4 6 usec 12 VDC 65 kHz 35...

Страница 61: ...EX 2403X GBEx 2021312310000324 GBEx 2021312310000344 CE European Union 2014 30 EU EMC Directive compliant with EN 61000 6 4 Industrial Emissions EN 61000 6 2 Industrial Immunity EN 61131 2 Programmabl...

Страница 62: ...7 215 Data Format Counter mode Max Value 16 777 215 Frequency mode Max Value 65 000 Average Mode Frequency Error 0 060 0 050 0 040 0 030 0 020 0 010 0 000 Instantaneous Mode Frequency Error 350 000 30...

Страница 63: ...dule option as your starting point This feature allows you to import the configuration database into your project and use ladder logic to set the attributes of each tag These settings control features...

Страница 64: ...to the Add I O module menu under controller configuration You will now see the list of all I O modules 2 Select the Generic 1756 I O option 3 After clicking OK you are presented with the following di...

Страница 65: ...3 Owner s Guide 0300199 01 Rev D Owner controller Connection Controller provides configuration Listen only controller connection Controller does not provide configuration but monitors input data only...

Страница 66: ...B 4 Appendix B Programming Your Module Owner s Guide 0300199 01 Rev D 4 Specify an RPI interval between 10 0 and 750 0 ms...

Страница 67: ...hardware version 1 001 ii How to use this manual v Important Notes About the guide ii Input types 1 1 Installing module 2 3 Keying instructions 2 5 interface module 2 5 removable terminal interface bl...

Страница 68: ...I 2 Index Owner s Guide 0300199 01 Rev D...

Страница 69: ...Owner s Guide 0300199 01 Rev D...

Страница 70: ...ubject to change without notice The Encompass logo and ControlLogix are trademarks of Rockwell Automation Corporate Headquarters Spectrum Controls Inc 1705 132nd Avenue NE Bellevue WA 98005 USA Fax 42...

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