Spectrum Controls 1756sc-OF8H Series A - Manual (Page 23)

Chapter 2: Installing And Wiring Your Module 9
removed, use the write-on label located on the side of the terminal blocks
to identify the module location and type.
Preventing
Electrostatic
Discharge
This module is sensitive to electrostatic discharge.
!
ATTENTION: Electrostatic discharge can damage integrated circuits or
semiconductors if you touch backplane 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 backplane 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
Removal and Insertion
Under Power
These modules are designed to be installed or removed while chassis
power is applied.
!
ATTENTION: When you insert or remove a module while backplane power is
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 or loss of process control.
· causing an explosion in a hazardous environment.
Repeated electrical arcing causes excessive wear to contacts on both the module and
its mating connectors. Worn contacts may create electrical resistance that can affect
module operation.