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
