Replacing The Electronic Unit - Emerson PACSystems RSTi-EP User Manual

User Manual
GFK-2958J
Figure 292: Removing the Plug-in Unit
10.2

Replacing the Electronic Unit

WARNING
Explosion Risk - Prior to starting work, ensure that there is not a potentially explosive
atmosphere.
CAUTION
• Pulling or inserting of an electronic unit might bring the inputs and outputs of all other
modules temporarily into an undefined condition
• If the machine/system might be put into a dangerous state as a result of the removal
of an electronic unit, a replacement can only be made once the machine/system is
disconnected from the power.
• Only one electronic unit may be removed from the station at any one time. If multiple
electronic units have to be replaced, this must be done consecutively.
• The components in the RSTi-EP series can be destroyed by electrostatic discharge.
Ensure that personnel and work equipment are adequately grounded.
Note:
An electronic unit can be replaced while the system is powered up (no load) and in
operation without having to disassemble the module. The station remains functional, and
Replacing Components
Once an electronic unit is removed from a power-feed module, the inputs and outputs of the
subsequent modules are no longer supplied with power. For EP-19xx modules, this is equivalent to
triggering the connected safety equipment.
Chapter 10
Oct 2019
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