Rockwell Automation 1756-HYD02 ControlLogix Hydraulic Servo Module - Manual (Page 12)

12 Publication 1756-UM525A-EN-P - June 2003
Chapter 1 What is the 1756-HYD02 Module?
Preventing Electrostatic
Discharge The 1756-HYD02 module is sensitive to electrostatic discharge.
Removal and Insertion
Under Power You can install or remove the module while chassis power is applied if you
observe the following precautions.
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.
We do not recommend removing and inserting the 1756-HYD02 module
while under power if the servo loop is closed. Make sure the servo loop is
open, that is, flashing green feedback indicator, before removing or inserting
the module under power.
Chapter Summary and
What’s Next In this chapter, you read a description of the 1756-HYD02 module. Chapter 2
describes
Installing the 1756-HYD02 Module .
ATTENTION
This equipment is sensitive to electrostatic discharge, which
can cause internal damage and affect normal operation. Follow
these guidelines when you handle this equipment:
• Touch a grounded object to discharge potential static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component boards.
• Do not touch circuit components inside the equipment.
• If available, use a static-safe workstation.
• When not in use, store the equipment in appropriate static-safe
packaging.
WARNING
When you insert or remove the module while backplane 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.
However, as stated on the previous page, the 1756-HYD02
module should not be pulled under power, nor should a powered
RTB be removed, in a Class I Division 2 environment.