Device maintenance and repair
7.3 Removing and installing hardware
SIMATIC IPC847E
140 Operating Instructions, 10/2018, A5E43920357-AA
Replacing redundant power supply (AC) module
If a module of the redundant power supply is defective, you can continue to operate the
device until the device can be shut down in a controlled manner.
The replacement of one of the two modules of the redundant power supply can be performed
without shutting down the device.
● An original spare part, i.e. a module of the redundant power supply of the same type.
● Cross-tip screwdriver P1
1. Use the status display ① to determine which module is defective (status display at the
top of the module is lit red or is not lit).
2. Switch off the defective module using the on/off switch
②.
3. Disconnect the defective module from the line voltage, see "Switching off the device
(Page 60)".
To do so, unplug the power cord from the socket
③ of the defective module.
4. Remove the highlighted screw of the defective module
④.
5. Pull out the defective module at the handle.
6. Install the new module and fasten it with the previously loosened screw.
7. Plug the power cord into the socket of the newly inserted module
③.
8. Check the safe state of the device.
9. Switch on the module again with the on/off switch
② (status display on top of module is
lit green).
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