Rockwell Automation 1769-IG16 Compact TTL Input Module - Manual (Page 3)

Compact TTL Input Module 3
Publication 1769-IN079A-EN-P - May 2006
Prevent Electrostatic Discharge
Remove Power
ATTENTION
Electrostatic discharge can damage integrated circuits or semiconductors if you
touch bus connector pins. Follow these guidelines when you handle the
module:
– Touch a grounded object to discharge static potential.
– Wear an approved wrist-strap grounding device.
– Do not touch the bus connector or connector pins.
– Do not touch circuit components inside the module.
– If available, use a static-safe work station.
– When not in use, keep the module in its static-shield box.
ATTENTION
Remove power before removing or inserting this module. When you remove or
insert a module with power applied, an electrical arc may occur. An electrical
arc can cause personal injury or property damage by:
– sending an erroneous signal to your system’s field devices, causing
unintended machine motion.
– causing an explosion in a hazardous environment.
Electrical arcing causes excessive wear to contacts on both the module and its
mating connector. Worn contacts may create electrical resistance.