Install The Module - Allen-Bradley ControlLogix 1756-IG16 Installation Instructions Manual

8 ControlLogix TTL Input Module

Install the Module

You can install or remove the module while chassis power is applied.
When you insert or remove the module while backplane
WARNING
power is on, an electrical arc can occur. This could cause
!
an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before
proceeding. Repeated electrical arcing causes excessive wear to
contacts on both the module and its mating connector. Worn contacts
may create electrical resistance that can affect module operation.
1. Align the circuit board with the top and bottom chassis guides.
2. Slide the module into chassis until module locking tabs click.
Publication
1756-IN584B-EN-P - August 2003
Printed
Circuit
Board
20861–M
Locking tab