Siemens SINAMICS S120 Equipment Manual page 314

Maintenance and service
10.4 Replacing components
Description
The average service life of the electronic fans is 50,000 hours. In practice, however, the
service life depends on other variables (e.g. ambient temperature, degree of cabinet
protection, etc.) and, therefore, may deviate from this value.
The electronic fans must be replaced in good time to ensure that the device is available.
Preparatory steps
● Disconnect the drive line-up from the power supply
● Allow unimpeded access
● Remove the protective cover
Removal
The removal steps are numbered in accordance with the numbers in the diagram.
1. Disconnect the plug-in connections for the fiber-optic cables and signal cables (maximum
five connectors).
2. Remove DRIVE-CLiQ cables and connections at –X41/–X42/–X46 (maximum
six connectors).
The DRIVE-CLiQ cables should be marked to ensure that they are subsequently correctly
inserted.
3. Take out the retaining screws for the IPD card (two screws) and remove the IPD card
from connector -X45 on the Control Interface Module.
4. Remove the retaining screws for the Control Interface Module (two screws).
When removing the Control Interface Module, you have to disconnect a maximum of five
additional connectors one after the other (two at the top, three below) and the PE connection
(one screw below).
NOTICE
Damage to the device due to damaged signal cables during disassembly
Signal cables can be damaged when withdrawing the Control Interface Module, which can
result in a device failure.
• When withdrawing the Control Interface Module, ensure that you do not damage any
Then, you can remove the plug for the electronic fan power supply from the Control Interface
Module. Now you can remove the electronic fan for the Control Interface Module.
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signal cables.
Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0