Specifications - AB Quality Allen-Bradley 1771-IJ User Manual

Specifications

Specifications - 1771 IJ and IK Encoder Counter Modules
General Input Specifications
Number of Counters 1
Counter Input Single channel (counter)
(switch selectable) Dual channel (encoder)
Input Pulse Rate 50KHz maximum
Data Transfer Modes Single transfer mode
(switch selectable) Block transfer mode
1771-IJ
External supply 5V dc, +0.25V
Input Ratings Vin = 0-5V dc
Vih (min) = 2.4V dc
Vil (max) = 0.6V dc
Device driving input terminal must be able to sink 16A minimum.
Output Ratings 2 open-collector outputs without internal pull-up resistors
Iout = 500mA maximum per output
Vout = 5V dc maximum
Power Dissipation 1771 IJ - 6.7 Watts maximum
Thermal Dissipation 1771 IJ - 22.9 BTU/hr
1771-IK
External Supply (Vext) 12-24V dc
Input circuits require 170mA maximum
Output circuits require 1.08A maximum
Input Ratings 0 < Vin < Vext
For Vext = 12V dc: Vih = 7.2V dc max; Vil = 4.8V dc max
Device driving input terminal must sink (or source if selected on Channel
A) 10mA
For Vext = 24V dc: Vih = 14.4V dc max; Vil = 9.6V dc max
Device driving input terminal must sink (or source if selected on Channel
A) 20mA
Output Ratings 2 open collector outputs without internal pull-up resistors.
Iout = 500mA max per output
Vout = Vext
Power Dissipation 1771 IK - 12.1 Watts maximum
Thermal Dissipation 1771 IK - 41.3 BTU/hr
General Specifications
Module Location Cat. No. 1771 I/O chassis
I/O Isolation Tested to 1500V ac for 1s
Limit Switch Input 12-48V dc
Backplane Power Supply 5V 1.2A typical
Current Requirements 1.4A maximum
Current consumption from 150mA @ 12V dc
external power supply 75mA @ 24V dc
Appendix
Publication 1794 UM006B-EN-P - June 2002
A