User Manual Section 10
GFK-2958L May 2021
Replacing Components 476
Figure 330: 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: 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.
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
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