Specifications
TTL Input Module
Cat. No. 1771IGD
Installation Instructions
8
Inputs per Module
16
Module Location
Series A or B 1771A1B, A2B, A3B,
A3B1, or A4B I/O chassis. Other locations
include 1771AM1, and AM2 I/O chassis.
Input Voltage Rating
HIGH = TRUE
LOW = TRUE
ON: 2.0 to 5.25V dc
OFF: -0.2 to +0.8V dc
ON: -0.2 to +0.8V dc
OFF: 2.0 to 5.25V dc
Customer Supply Voltage
5.0V dc (+0.25V)
50mV peaktopeak ripple max.
Customer Current Sink Requirements
7mA maximum (source per input)
0.8mA maximum (sink per input)
Customer Supply Current per Module
380mA max.
Input Signal Delay
Less than 1ms
Power Dissipation
2.7 Watts (max.); 0.4 Watts (min.)
Thermal Dissipation
9.2 BTU/hr (max.); 1.4 BTU/hr (min.)
Backplane Current
130mA max.
Isolation Voltage
Tested at 1500V ac (rms) for 1 second
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
0
o
to 60
o
C (32
o
to 140
o
F)
-40
o
to 85
o
C (-40
o
to 185
o
F)
5 to 95% (without condensation)
Fuse
0.5A 250V normal blow
Conductors
Wire Size
Cable
Category
14 gauge stranded maximum
3/64 inch insulation maximum
Shielded (Belden 8761)
2
1
Keying
Between 16 and 18
Between 24 and 26
Field Wiring Arm
Catalog Number 1771WH
Wiring Arm Screw Torque
79 inchpounds
1
Refer to publication 17704.1, Programmable Controller Wiring and Grounding Guidelines.
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Publication 17712.178 January 1994
Supersedes Publication 17712.131 - May 1989
PN 95510768
Copyright 1994 AllenBradley Company, Inc. Printed in USA
