Rockwell Automation 1746-XXXX SLC 500 32-Channel Digital I/O Modules Installation Instructions - Manual (Page 11)

SLC 500™ 32-Channel Digital I/O Modules 11
Publication 1746-IN028A-EN-P - October 2003
Wiring Options for the I/O Module
Included with your 32-point I/O module is a keyed 40-pin female connector and
crimp type pins. These components allow you to wire I/O devices to the module
using a 40-conductor cable or individual wires. The wiring diagrams on pages 16
through 19 show the I/O terminations of the connector for your specific module.
Refer to page 15 for connector/pin assembly instructions. When assembled, align
the female connector over the modules male header using the keying slot as a
guide. Firmly lock them together with the upper and lower retaining arms. 1492
pre-wired cables and interface modules can be used for connecting external I/O.
There are two options for wiring the 32-point I/O module.
Option 1 - Wiring the 1746-N3 Connector
(1) Maximum user cable length is dependent on how much voltage drop (current x (ohms/ft.) x (feet)) the user’s system can
tolerate. The user’s system should take into account the minimum turn-on voltage required by external loads connected to
the 32-point output modules and all of the voltage drops associated with wiring to and from the load, terminal blocks,
power sources and the module itself.
Keyed Female Connector (1746-N3)
Included with 32-Point I/O Modules
Contact pins provided with female
connector can accept 22 to 26 AWG
wires.
(1)
User Terminal Block
(For wire termination,
refer to page 14
for the wiring diagrams
of the I/O modules.)
Panel Lights,
Buttons, Etc.
Lower
Retaining
Arm
Keyed Male
MIL-C-83503
Header
32 Point
I/O Module