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Table of Contents

Publication 1794-6.5.11 - November 1997

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
How You Use the Frequency Input Module . . . . . . . . . . . . . . . . . . . . . 1-1
What the Frequency Input Module Does. . . . . . . . . . . . . . . . . . . . . . . . 1-2
Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Input Capabilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Selecting the Mode(s) of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Output Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Implementing Application Features . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

How Frequency is Calculated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Frequency Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Termination on Number of Pulses . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Missing Pulse Multiplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Direction Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

How to Install Your Frequency
Input Module

Chapter 2

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Before You Install Your Input Module . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
European Union Directive Compliance. . . . . . . . . . . . . . . . . . . . . . . . . 2-1

EMC Directive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Low Voltage Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Wiring the Terminal Base Units (1794-TB3G shown) . . . . . . . . . . . 2-3

Installing the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Mounting the Terminal Base Unit on a DIN Rail . . . . . . . . . . . . . . . 2-4
Panel/Wall Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Mounting the Frequency Input Module on the Terminal Base Unit . 2-7

Connecting Wiring for Your Frequency Input Module . . . . . . . . . . . . . 2-9

Connecting Wiring using a 1794-TB3G and –TB3GS

Terminal Base Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Wiring connections for the 1794-IJ2 Frequency Input Module . . 2-11
Examples of Wiring to a 1794-TB3G Terminal Base Unit . . . . . . . 2-12

Module Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Allen-Bradley Replacements

Summary of Contents for FLEX I/O 1794-IJ2

Page 1: ...User Manual FLEX I O Frequency Input Module Cat No 1794 IJ2 Allen Bradley Allen Bradley Replacements ...

Page 2: ...ration when applying products such as those described in this publication Reproduction of the contents of this copyrighted publication in whole or in part without written permission of Allen Bradley Company Inc is prohibited Throughout this manual we make notes to alert you to possible injury to people or damage to equipment under specific circumstances Attention helps you identify a hazard avoid ...

Page 3: ...d into five chapters The following chart lists each chapter with its corresponding title and a brief overview of the topics covered in that chapter Chapter Title Contents 1 Overview of FLEX I O and Frequency Input modules Describes FLEX I O frequency input modules features and how they function 2 How to Install Your Frequency Input Module How to install and wire the module 3 Module Programming Exp...

Page 4: ...et Adapter 1794 5 48 1794 ADN 24V dc DeviceNet Adapter 1794 5 14 1794 6 5 5 1794 ASB C 24V dc Remote I O Adapter 1794 5 50 1794 6 5 9 1794 ASB2 B 24V dc 2 Slot Remote I O Adapter 1794 5 44 1794 6 5 13 1794 APB 24V dc Profibus Adapter 1794 5 40 1794 6 5 6 1794 IB8 24V dc 8 Sink Input Module 1794 5 30 1794 OB8 24V dc 8 Source Output Module 1794 5 31 1794 IB16 24V dc 16 Sink Input Module 1794 5 4 179...

Page 5: ...94 6 5 12 1794 IJ2 24V dc 2 Frequency Input Module 1794 5 49 1794 6 5 11 1794 IA8 120V ac 8 Input Module 1794 5 9 1794 OA8 120V ac Output Module 1794 5 10 1794 TB2 1794 TB3 2 wire Terminal Base 3 wire Terminal Base 1794 5 2 1794 TBN Terminal Base Unit 1794 5 16 1794 TBNF Fused Terminal Base Unit 1794 5 17 1794 TB3T Temperature Terminal Base Unit 1794 5 41 1794 TB3S Spring Clamp Terminal Base Unit ...

Page 6: ...Publication 1794 6 5 11 November 1997 4 Using This Manual ...

Page 7: ...Your Frequency Input Module Chapter 2 What This Chapter Contains 2 1 Before You Install Your Input Module 2 1 European Union Directive Compliance 2 1 EMC Directive 2 1 Low Voltage Directive 2 2 Power Requirements 2 2 Wiring the Terminal Base Units 1794 TB3G shown 2 3 Installing the Module 2 4 Mounting the Terminal Base Unit on a DIN Rail 2 4 Panel Wall Mounting 2 6 Mounting the Frequency Input Mod...

Page 8: ...Frequency Input Module 1794 IJ2 4 3 Bit Word Definitions for Block Transfer Read Words for the Frequency Input Module 4 3 Block Transfer Write Word Assignments for the Frequency Input Module 4 5 Bit Word Definitions for the Block Transfer Write Words for the Frequency Input Module 4 6 Chapter Summary 4 12 How Communication Takes Place and I O Image Table Mapping with the DeviceNet Adapter Chapter ...

Page 9: ...rs 6 1 Diagnostics 6 3 Diagnostic Bits in Word 5 of the BTR File 6 3 What s Next 6 3 Specifications Appendix A What This Appendix Contains A 1 Resolution and Accuracy A 4 Schematics Appendix B What This Appendix Contains B 1 Input Circuits B 1 Frequency Inputs B 1 Gate Inputs B 1 Output Circuits B 2 Digital Outputs B 2 DC to DC Converters 24V dc power supplies B 3 Allen Bradley Replacements ...

Page 10: ...ime interval A frequency calculation can start before the time interval has elapsed if a user specified number of frequency input pulses have occurred The module s primary use is accurate high speed frequency measurement A high speed internal clock is synchronized with the frequency input to count over a user selected sampling time or a user defined number of frequency input pulses All power for i...

Page 11: ...instructions in your ladder diagram program These instructions let the adapter read input values and status from the module and let you write output values and configure the module s mode of operation The following illustration describes the communication process 500 50mV 50mV Select 24V IEC 1 24V IEC 1 Magnetic 500 50mV Magnetic Gate Input Frequency Input CRISP Bus Interface Output 0 Output 1 Int...

Page 12: ... Flexbus External devices transmit frequency signals to the module 2 The module converts frequency signals into integer format and stores these values until the adapter requests their transfer 3 Your ladder program instructs the adapter to perform a BTR of the values and stores them in a data table 4 The adapter and module determine that the transfer was made without error and input values are wit...

Page 13: ...te input G1 frequency input F0 F1 you connect your input device to this input ac proximity sensors switch magnetic vortex gate input G0 G1 you connect your input device to this input ac proximity sensors switch magnetic vortex used to determine direction CW or CCW 2 input channels FREQ GATE OK 0 FREQUENCY INPUT 2 CHANNEL 1 1794 IJ2 Allen Bradley F 0 F FREQ GATE 1 F 1 F OUT 0 OUT 1 Mode Use this mo...

Page 14: ...lation Frequency is determined by a general algorithm which can be modified by user defined parameters In its simplest form the algorithm employs the user defined Minimum Sampling Time to set a window in which to count pulses to determine the frequency At least two pulses are required within the sample window Frequency is determined by storing the time the first pulse occurred and then continually...

Page 15: ...r those situations where many pulses are expected within the sampling window such that early determination of frequency is possible Normal Mode Frequency Determination at Least Two Pulses in Sampling Time Frequency Reported at End Sampling Time T2 T1 pulses counted 1 Minimum Sampling Time Frequency Input Pulses first pulse in window T1 time stored pulses counted last pulse in window T2 update as e...

Page 16: ...s over Missing Pulse Multiplier The last user parameter which is provided to modify the frequency algorithm is the Missing Pulse Multiplier In this case the user can set the number of Minimum Frequency Sampling Time windows they will allow to extend the time to capture a second pulse before reporting a Missing Pulse Alarm The intent with this parameter is to allow a tradeoff of the bandwidth avail...

Page 17: ...the Frequency input the rotation is CounterClockwise Missing Pulse Multiplier Frequency Reported at First Pulse in Extended Time T2 T1 2 1 Minimum Sampling Time Frequency Input Pulses first pulse in window T1 time stored first pulse in an extended window T2 time stored extended windows added one at time until pulse occurs or multiplied windows exceeded Missing Pulse Alarm Would be Reported After L...

Page 18: ...erview of the Frequency Input Module 1 9 Chapter Summary In this chapter you learned about the frequency input module block transfer communication and details of how the module functions Now you can install the module Install the IJ2 Module 2 ...

Page 19: ...Publication 1794 6 5 11 November 1997 1 10 Overview of the Frequency Input Module Allen Bradley Replacements ...

Page 20: ...truction file EN 50081 2EMC Generic Emission Standard Part 2 Industrial Environment EN 50082 2EMC Generic Immunity Standard Part 2 Industrial Environment For information on See page Before You Install Your Module 2 1 European Union Directives 2 1 Power Requirements 2 2 Installing the Module 2 4 on a DIN rail 2 4 on a wall panel 2 6 on the terminal base 2 7 Connecting Wiring 2 9 Module Indicators 2...

Page 21: ...l Automation Wiring and Grounding Guidelines For Noise Immunity publication 1770 4 1 Guidelines for Handling Lithium Batteries publication AG 5 4 Automation Systems Catalog publication B111 This equipment is classified as open equipment and must be mounted in an enclosure during operation to provide safety protection Power Requirements The wiring of the terminal base unit is determined by the curr...

Page 22: ...y base unit must not be greater than 10A Combination 24V dc 24V dc 24V dc 24V dc 24V dc 24V dc Note Use this configuration if using any noisy dc digital I O modules in your system Frequency Input Module wiring separate from digital wiring Note All modules powered by the same power supply must be frequency or TC RTD mV modules for this configuration Note All modules must be frequency or TC RTD mV m...

Page 23: ... of the unit to which you are connecting this terminal base unit 2 Check to make sure that the 16 pins in the male connector on the adjacent device are straight and in line so that the mating female connector on this terminal base unit will mate correctly 3 Position the terminal base on the 35 x 7 5mm DIN rail A A B pt no 199 DR1 46277 3 at a slight angle with hook B on the left side of the termin...

Page 24: ...fully retracted 7 7 4 1 30077 M 7 7 6 2 3 4 0 9 8 1 Press down on the terminal base unit to lock the terminal base on the DIN rail If the terminal base does not lock into place use a screwdriver or similar device to open the locking tab press down on the terminal base until flush with the DIN rail and release the locking tab to lock the base in place Gently push the flexbus connector into the side...

Page 25: ...l or panel If you are installing your module into a terminal base unit that is already installed proceed to Mounting the Frequency Input Module on the Terminal Base on page1 Use the mounting kit Cat No 1794 NM1 for panel wall mounting To install the mounting plate on a wall or panel 1 Lay out the required points on the wall panel as shown in the drilling dimension drawing 1 4 35 5 1 1794 NM1 Mount...

Page 26: ...he adapter down flush with the panel until the locking lever locks 6 Position the terminal base unit up against the adapter and push the female bus connector into the adapter 7 Secure to the wall with two 6 self tapping screws 8 Repeat for each remaining terminal base unit Note The adapter is capable of addressing eight modules Do not exceed a maximum of eight terminal base units in your system Mo...

Page 27: ...odule is seated when the latching mechanism 7 is locked into the module 6 Repeat the above steps to install the next module in its terminal base unit 4 1 3 2 5 6 7 ATTENTION Remove field side power before removing or inserting the module This module is designed so you can remove and insert it under backplane power When you remove or insert a module with field side power applied an electrical arc m...

Page 28: ... 48 49 50 34 51 16 39 40 41 42 43 44 45 46 Label placed at top of wiring area 40 thru 45 chassis ground 35 and 51 common 34 and 50 24V dc 16 and 33 chassis ground 40 thru 45 chassis ground 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 34 3V 6V 24V Pwr RET 50 mV Sel 500 50 mV 3V 6V 24V Pwr RET F F Chann...

Page 29: ...unit to terminal 34 and from terminal 51 24V dc common to terminal 35 on the next 1794 TB3G or TB3GS base unit NOTE Use extreme care when connecting wiring to an adjacent terminal base unit Wiring for the 1794 TB3G and TB3GS terminal base units is different from other 1794 terminal base units ATTENTION To reduce susceptibility to noise power frequency modules and digital modules from separate powe...

Page 30: ...0 25 27 29 1 As defined by standard IEC 1131 2 2 RET not used on 2 wire devices 3 Add external resistor from 24V to F or G for wire off detection 0 4mA 50KΩ 4 Add a jumper between 50mV and RET Frequency channel 0 4 to 3 channel 1 11 to 12 Gate channel 0 21 to 20 channel 1 28 to 29 5 Connect cable shields to GND terminals 6 All 4 RET terminals ch 0 and 1 Freq Gate are internally connected together ...

Page 31: ...43 44 45 46 47 48 49 50 51 5 6 7 Power In Input Device Magnetic Input Device 10 12 Standard Magnetic Pickup 50mV threshold F0 Standard Output O0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 37 17 18 Important When using a channel for 50mV sensor jumper the 50 500mV pin to the appropriate RET Magnet...

Page 32: ...pter Summary In this chapter we told you how to install your input module in an existing programmable controller system and how to wire to the terminal base units Indicator Indication Description Input 0 or 1 Frequency or Gate Off Dark Input turned off input not used wire disconnected On Yellow Input turned on Fault F Frequency or Gate Off Dark Wire connected normal operation On Red flash Wire dis...

Page 33: ...ams can be modified to suit your application requirements A configuration block transfer write BTW is initiated when the frequency module is first powered up and subsequently only when the programmer wants to enable or disable features of the module The configuration BTW sets the bits which enable the programmable features of the module such as scalars and alarm values etc Block transfer reads are...

Page 34: ...data to the PLC 2 processor PLC 3 Family Processor Block transfer instructions with the PLC 3 processor use a control file and a data file The block transfer control file contains the data table section for module location the address of the block transfer data file and other related data The block transfer data file stores data that you want transferred to the module when programming a BTW or fro...

Page 35: ...ack Group Slot Data File 3 2 0 N18 101 Length Control 0 B17 0 EN BTW BLOCK TRANSFER WRITE Rack Group Slot Data 3 2 0 N18 1 DN Length Control 0 B17 0 5 B17 0 B17 0 15 ER DN ER Rung M 0 The IJ2 module is located in rack 3 I O group 2 slot 0 The control file is a 10 word file starting at B17 0 that is shared by the BTR BTW The data obtained by the PLC3 processor is placed in memory starting at locati...

Page 36: ... Length Continuous N22 1 0 N ER N22 200 15 N22 200 15 N22 205 15 Rung 2 0 The IJ2 module is located in rack 1 I O group 2 slot 0 The integer control file starts at N22 200 is 5 words long and is compatible with all PLC 5 family members The data obtained by the PLC 5 processor from the IJ2 module is placed in memory starting at N22 101 and with the default length of 0 is 7 words long The length can...

Page 37: ...ocated in rack 14 I O group 1 slot 0 The data obtained by the PLC 5 250 processor from the IJ2 module is placed in the data table starting at 2BTD5 101 and with the default length of 0 is 7 words long The length can be any number between 0 and 7 BW141 0 EN Rung 1STEPO 1 The IJ2 module is located in rack 14 I O group 1 slot 0 The data sent to the IJ2 module from the PLC 5 250 processor is from the ...

Page 38: ...Publication 1794 6 5 11 November 1997 3 6 Programming Your Frequency Input Module ...

Page 39: ... programming terminal and write block transfers Note Programmable controllers that use 6200 software release 4 2 or higher programming tools can take advantage of the IOCONFIG Addendum utility to configure this module IOCONFIG Addendum uses menu based screens for configuration without having to set individual bits in particular locations Refer to your 6200 software literature for details For infor...

Page 40: ...ing Data for the Module The following read and write words and bit word descriptions describe the information written to and read from the frequency input module The module uses up to 6 words of input data and up to 7 words of output data Each word is composed of 16 bits Frequency Input Module 1794 IJ2 Image Table Mapping Module Image I O Image Frequency Channel 0 Full Scale or Acceleration Channe...

Page 41: ...z value 0 0 is reported Calculated frequency depends on Minimum Sampling Time and Missing Pulse Multiplier Word 1 Bit 00 15 00 17 of Full Scale or Acceleration channel 0 Value of the calculated Frequency scaled by the Maximum Frequency or Calculated Value of Acceleration in Hz second depending on the state of the Freq or Accel Alarm Select bit Note Full scale will be calculated accurately up to a ...

Page 42: ...quency Input will generate a Missing Pulse Alarm a missing Gate Input will only generate a No Sensor Present Detected status 3 Bits 06 07 Not used Bits 08 10 Missing Pulse Alarm channel 0 Indicates when no Frequency input pulse has occurred within the period determined by the Minimum Frequency Sampling Time and the Missing Pulse Multiplier Primary control is given to the Missing Pulse Multiplier t...

Page 43: ... The scaled Frequency is greater than 32 767 Hz or 3 276 7 Hz overange The Full Scale calculation based on Maximum Frequency is 3 276 7 1010 1111 10 15 Not Used Bits 04 15 04 17 Reserved Word Bit Definition Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 Dec Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 0 CF SSM FR Ch 0 Number Of Pulses To Terminate Sampling Ch 0 MPM Ch 0 R LF FR C...

Page 44: ...1 00 Word Bit Definition Write Word 0 Bits 00 01 Missing pulse multiplier bits channel 1 used to modify the Minimum Frequency Sampling Time to allow the frequency bandwidth to be more closely adjusted to the value needed to report the proper frequency and report a missing pulse more quickly Default no multiplier alarm generated immediately Bit 01 00 Missing Pulse Multiplier 0 0 No Multiplier norma...

Page 45: ...e Frequency when a specified number of input pulses have occurred This allows earlier reporting of the frequency than the Minimum Frequency Sampling Time when many input pulses are occurring Accurate frequency determination is possible without waiting for the full Minimum Frequency Sampling Time to expire Default minimum frequency sampling time Bit 12 14 11 13 10 12 Number of pulses to terminate s...

Page 46: ...ed by Frequency Range bit The Wire Off detect time in mode 1 2 3 is 2 seconds maximum Bit 01 00 Channel wire off missing pulse detection mode 0 0 Disabled 0 1 Alarm only frequency unchanged 1 0 Alarm and force frequency to maximum frequency value 32767 or 3276 7 or maximum frequency value 0 1 1 Alarm and force frequency to minimum frequency value 0 or 0 0 Bits 02 03 Missing pulse delay multiplier ...

Page 47: ...annel 0 Alerts a channel that if process start up is in progress to defeat the missing pulse alarm for a time determined by the missing pulse delay multiplier 0 Normal Run Mode 1 Startup Mode defeat delay Missing Pulse Alarm Default 0 Normal Run Mode Bits 08 11 10 13 Minimum Frequency Sampling Time channel 0 Specifies the minimum time in ms the module will spend collecting pulses to determine the ...

Page 48: ...her to turn On or Off the 24 Vdc Frequency input IEC 1 hardware Wire Off Lead Breakage detection NOTE Customer devices must draw more than 0 4 mA in the On and Off State To use this feature with relays or switches connect a shunt resistor 50K across the contacts 0 Disable 1 Enable Default 0 Disable Bit 15 17 Wire Off Fault Select Gate Input channel 0 Selects whether to turn On or Off the 24 Vdc Ga...

Page 49: ... No multiplier alarm generated immediately normal mode with 2s extension delay Bit 03 02 Alarm periods before alarm generated 0 0 No multiplier alarm generated immediately normal mode with 2s extension delay 0 1 2 sample periods 2s delay before alarm 1 0 8 sample periods 2s delay before alarm 1 1 32 sample periods 2s delay before alarm Bit 04 Frequency or Acceleration Alarm Select channel 1 Determ...

Page 50: ...ctive Low 0V On Default 0 Normal Active High 24V On Bit 13 15 Invert Select Gate Input channel 1 Selects whether to invert the Gate input signal if not using an Active High 24V On 24 Vdc IEC 1 sensor or Normally Open relay or switch contact on the 24 Vdc Gate Input terminal Allows compatibility with an Active Low 0V On 24 Vdc IEC 1 sensor or Normally Closed relay contact on the 24 Vdc Gate Input t...

Page 51: ...d by the Output data for Slot 1 and so on up to slot 7 The first word of input data sent by the adapter is the Adapter Status Word This is followed by the input data from each slot in the order of the installed I O modules The Input data from Slot 0 is first after the status word followed by Input data from Slot 2 and so on up to slot 7 For information on See page About DeviceNetManager Software 5...

Page 52: ...ered down and then powered back up 15 Bit 0 1 2 3 4 5 6 7 8 10 through 15 I O Module Fault Bits Node Address Changed Bit Slot 0 Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 Slot 7 9 I O State Bit Not Used Bit Description Bit Explanation I O Module Fault 0 This bit is set 1 when an error is detected in slot position 0 1 This bit is set 1 when an error is detected in slot position 1 2 This bit is set 1...

Page 53: ...le mapping is shown below Frequency Input Analog Module 1794 IJ2 Image Table Mapping Module Image I O Image Input Size Output Size 0 to 8 Words 1 to 7 Words Reserved Reserved Frequency Channel 0 Full Scale or Acceleration Channel 0 Diagnostics Frequency Channel 1 Full Scale or Acceleration Channel 1 GS 1 F A 1 WO 1 MPA 1 DIR 1 GS 0 F A 0 WO 0 MPA 0 DIR 0 R R R Reserved FR 1 MPM 1 R NOPTS 1 LF FR 0...

Page 54: ...2 11 10 09 08 07 06 05 04 03 02 01 00 1 CF SSM FR Ch 0 Number Of Pulses To Terminate Sampling Ch 0 MPM Ch 0 R LF FR Ch 1 Number Of Pulses To Terminate Sampling Ch 1 MPM Ch 1 2 Maximum Frequency 0 32 767 or 0 0 3 276 7 or Absolute Value of Acceleration 0 to 32 767 Channel 0 3 Frequency Scaling Divisor 0 255 Ch 0 Frequency Scaling Multiplier 0 255 Ch 0 4 WOFG Ch 0 WOFF Ch 0 IGI Ch 0 IFI Ch 0 Minimum...

Page 55: ...Vdc Input IEC 1 or Switch Contact with shunt Wire Off Detection has gone true for any of the Frequency or Gate inputs on a channel that has the Wire Off Fault Select 1 Bit 02 Frequency or Acceleration Alarm channel 1 Changes state from 0 to 1 if the calculated Frequency actual or scaled exceeds the user programmed Maximum Frequency or the absolute value of calculated Acceleration Deceleration exce...

Page 56: ...Input will only generate a No Sensor Present Detected status 3 Bits 14 15 16 17 Not used Word 6 Bits 00 03 Diagnostic Status indicate the response from the module a normal or non normal operating condition Bit 03 02 01 00 0 0 0 0 0 Normal Operation No Failure 0 0 0 1 1 Calibration Failure 0 0 1 0 2 Configuration Failure A Minimum Frequency Sample Time value other than 0 9 was selected 0 0 1 1 3 Me...

Page 57: ... pulses to terminate sampling 0 0 0 Use minimum frequency sampling time 0 0 1 2 0 1 0 4 0 1 1 8 1 0 0 16 1 0 1 32 1 1 0 64 1 1 1 128 Bits 05 Frequency range bits channel 1 Specifies the Frequency Range of the Frequency input 0 1 32767 below 1Hz reports 0 1 1 0 3276 7 below 1 0Hz reports 0 0 Default 0 Bit 06 Local fault mode selection determines how the Module Safe State data will be used to contro...

Page 58: ...ff Fault or Missing Pulse Alarm 0 Reset outputs 1 Hold last state Default 0 reset outputs Bit 15 17 Communication fault Signals the module that communications has been interrupted on the network The adapter signals that the module should execute its fault routine or go to the Safe State and control any Alarm Outputs accordingly During normal startup this bit must be set 1 by the user program to be...

Page 59: ...ault 0 No multiplier alarm generated immediately normal mode with 2s extension delay Bit 03 02 Alarm periods before alarm generated 0 0 No multiplier alarm generated immediately normal mode with 2s extension delay 0 1 2 sample periods 2s delay before alarm 1 0 8 sample periods 2s delay before alarm 1 1 32 sample periods 2s delay before alarm Bit 04 Frequency or Acceleration Alarm Select channel 0 ...

Page 60: ...4 Vdc Gate Input terminal 0 Normal Active High 24V On 1 Invert input Active Low 0V On Default 0 Normal Active High 24V On Bit 14 16 Wire Off Fault Select Frequency Input channel 0 Selects whether to turn On or Off the 24 Vdc Frequency input IEC 1 hardware Wire Off Lead Breakage detection NOTE Customer devices must draw more than 0 4 mA in the On and Off State To use this feature with relays or swi...

Page 61: ...fault 0 No multiplier alarm generated immediately normal mode with 2s extension delay Bit 03 02 Alarm periods before alarm generated 0 0 No multiplier alarm generated immediately normal mode with 2s extension delay 0 1 2 sample periods 2s delay before alarm 1 0 8 sample periods 2s delay before alarm 1 1 32 sample periods 2s delay before alarm Bit 04 Frequency or Acceleration Alarm Select channel 1...

Page 62: ...t Select Gate Input channel 1 Selects whether to invert the Gate input signal if not using an Active High 24V On 24 Vdc IEC 1 sensor or Normally Open relay or switch contact on the 24 Vdc Gate Input terminal Allows compatibility with an Active Low 0V On 24 Vdc IEC 1 sensor or Normally Closed relay contact on the 24 Vdc Gate Input terminal 0 Normal Active High 24V On 1 Invert input Active Low 0V On...

Page 63: ...put words You can change the I O data size for a module by reducing the number of words mapped into the adapter module as shown in real time sizes Real time sizes are the settings that provide optimal real time data to the adapter module Frequency input modules have 15 words assigned to them This is divided into input words output words You can reduce the I O data size to fewer words to increase d...

Page 64: ...nt at one of the Input terminals When wire off detection is enabled and a wire off fault is detected 24 Vdc IEC 1 input terminal only a fault indicator red is blinked flashed at a rate of 1Hz to signal a fault condition A wire off fault signal will also be sent to the backplane A flashing red fault indication means a valid wire off condition for a 24 Vdc IEC 1 Input or a 24 Vdc contact switch inpu...

Page 65: ... when the green OK indicator is on A red OK indicator shows that the module is in a Faulted condition internal error Indicator Condition Operating Description Input 0 1 Freq or Gate Off Dark Input Turned Off Input Not Used or Wire Disconnected On Yellow Input Turned On Active High or Active Low if Inverted Fault F Freq or Gate Off Dark Wire Connected Normal Operation or Detection Disabled On Red F...

Page 66: ... Failure 0 0 0 1 1 Calibration Failure 0 0 1 0 2 Configuration Failure A Minimum Frequency Sample Time value other than 0 9 was selected 0 0 1 1 3 Message Failure 0 1 0 0 4 Lead Break Detection Hardware Failure 0 1 0 1 5 Major Hardware Failure 0 1 1 0 6 EEPROM Failure 0 1 1 1 7 RAM Failure 1 0 0 0 8 ROM Failure 1 0 0 1 9 Calculation Failure The actual Frequency is greater than 32 767 Hz or 3 276 7...

Page 67: ...Publication 1794 6 5 11 November 1997 6 4 Troubleshoot the Frequency Input Module Allen Bradley Replacements ...

Page 68: ...igh range 24V dc IEC1 Proximity or Encoder input 24V dc Contact Switch input On State Voltage Maximum Limited to isolated 24V dc power supply maximum On State Current Minimum Nominal Maximum 2 0mA 9 0mA 10 0mA Off State Current Minimum 1 5mA into 24V dc IEC1 Terminal Off State Voltage Maximum 5 0V dc on 24V dc IEC1 Terminal Wire Off Detection 0 4mA for proximity encoder or contact switch with 50kΩ...

Page 69: ...ac ripple 220mA 19 2V dc 180mA 24V dc 140mA 31 2V dc Isolated dc Power Supply Voltage Voltage Range Supply Current Peak ac Ripple Output to sensors and encoders 24V dc nominal 21 6 to 26 4V dc 0 60mA maximum 24V dc 4 devices 15mA 60mA 100mV maximum Isolation Voltage 1250 Vrms V ac between user Input F G and System user Output 0 1 and System and user power and System 100 tested at 2121 Vdc for 1s 5...

Page 70: ...50 g peak acceleration 11 1 ms pulse width Tested 5 g 10 500Hz per IEC 68 2 6 Input Conductors Wire Category Length max Belden 8761 21 1000ft 304 8m Output Conductors Wire Category Belden 8761 21 Agency Certification when product is marked CSA certified CSA Class I Division 2 Groups A B C D certified UL listed CE marked for all applicable directives User Manual Publication 1794 6 5 11 1 Use this c...

Page 71: ...Resolution Sampling Accuracy Time Base Accuracy Worst Case Total Accuracy Deviation in Hz Due to Total Accuracy 1 0 3276 7 Frequency Range 1 32767 Frequency Range 2 0 02 0 0225 0 0425 0 1 1 4Hz 1 14Hz 0 01 4 0 01 0 0225 0 0325 0 1 1 1Hz 1 11Hz 0 005 5 0 008 0 0225 0 0305 0 1 1 0Hz 1 10Hz 0 004 10 0 004 0 0225 0 0265 0 1 0 9Hz 1 9Hz 0 002 20 0 002 0 0225 0 0245 0 1 0 8Hz 1 8Hz 0 001 50 0 0008 0 022...

Page 72: ...h active or passive sensor inputs by accepting any pulse output device such as vortex flowmeter magnetic pickup or digital pickup Gate Inputs Gate inputs are similar to frequency inputs and are used for determining direction There is one gate associated with each frequency input circuit G0 corresponds to F0 The circuit is designed to interface with both active or passive sensor inputs by accepting...

Page 73: ...215W 47pF 100pF 100pF 825W 8 25KW 100KW 46 4KW 8 25KW 5 11KW 10KW 100pF 10KW 100pF Customer supplied power ranging from 10V to 31 2V dc is connected internally to the power output transistor When an output is turned on current flows into the source out of the drain through the load connected to the ground of the customer supply customer return Diode D6 protects the power output transistors from da...

Page 74: ...vada 3300 5mm or 8mm Proximity Transducer 24V dc from terminal base dc dc converter Channel 0 current limit Channel 1 current limit Frequency 0 Gate 0 15mA 15mA 30mA maximum Frequency 1 Gate 1 15mA 15mA 30mA maximum To customer devices The frequency input module isolated power supply consists of 1 isolated 24V dc power supply that provides 2 current limited outputs of 30mA maximum 1 for each chann...

Page 75: ...ansfers 3 1 compatible terminal bases 2 9 configurable features 4 1 connecting wiring 2 9 considerations pre installation 2 1 curent draw through base units 2 2 current requirements frequency input module 2 2 D daisy chaining wiring 2 3 dc to dc converters circuit diagram B 3 default values 5 13 DeviceNetManager software 5 1 diagnostics troubleshooting 6 3 digital outputs circuit diagram B 2 DIN r...

Page 76: ...or 3 2 PLC5 family processor 3 3 PLC5 250 processor 3 4 power defaults 5 13 proximity probes 1 4 R removing and replacing under power RIUP 2 8 S sample program PLC3 3 2 PLC5 3 3 PLC5 250 3 4 software DeviceNetManager 5 1 status indicators 2 13 system throughput 5 3 T TC RTD mV 1794TB3 example 2 12 TC RTD mV input mapping 1794IJ2 5 3 terminal bases compatible 2 9 troubleshooting 6 1 W wall panel mo...

Page 77: ...ssibility info not in manual text illustration Technical Accuracy Completeness What information is missing Clarity Sequence What is not in the right order What is unclear Other Comments Use back for more comments Your Name Location Phone Return to Marketing Communications Allen Bradley Co 1 Allen Bradley Drive Mayfield Hts OH 44124 6118Phone 216 646 3176 FAX 216 646 4320 Publication ICCG 5 21 Augu...

Page 78: ... IF MAILED IN THE UNITED STATES BUSINESS REPLY MAIL FIRST CLASS MAIL PERMIT NO 18235 CLEVELAND OH POSTAGE WILL BE PAID BY THE ADDRESSEE TECHNICAL COMMUNICATION 1 ALLEN BRADLEY DR MAYFIELD HEIGHTS OH 44124 9705 3 6 5 0 2 9 PLEASE FASTEN HERE DO NOT STAPLE ...

Page 79: ...oftware and documentation updates technical subscription services Engineering and Field Services application engineering assistance integration and start up assistance field service maintenance support Technical Training lecture and lab courses self paced computer and video based training job aids and workstations training needs analysis Repair and Exchange Services your only authorized source cur...

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Summary of Contents for FLEX I/O 1794-IJ2

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Allen-Bradley FLEX I/O 1794-IJ2, User Manual, Page: 7 / 80

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Summary of Contents for FLEX I/O 1794-IJ2

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