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Service and maintenance
8.3 Forming the DC link capacitors
Removal steps
1. Open the fan cover using a tool
2. Open the fan cover
3. Withdraw the fan connector
4. Remove the front cover with fan
Installation steps
1. Insert the new fan cover with fan
2. Insert the fan connector
3. Close the front cover
Note
Checking the fastenings
Attach the fan cover using the appropriate tool (slotted screwdriver or Torx screwdriver),
tightening to 1.8 Nm, and check that the connections are secure.
8.3
Forming the DC link capacitors
8.3.1
Central components (AM600)
Description
When DC link capacitors are formed, a defined voltage is connected to them and a defined
current flows so that the appropriate capacitor characteristics are restored for them to be re-
used as DC link capacitors.
NOTICE
Damage to components when operating the AM600 after an extended period in storage
If the AM600 is kept in storage for more than 2 years, the DC link capacitors must be re-
formed. If this is not performed, the units could be damaged when they are switched on.
• Form an AM600 after it has been in storage for more than two years.
• Make sure that the storage period is calculated from the date of manufacture and not
If the device is commissioned within two years of its date of manufacture, the DC link
capacitors do not need to be reformed. The date of manufacture can be taken from the serial
number on the rating plate.
154
②
.
②
from the date that the equipment was shipped.
①
(slotted screwdriver or Torx screwdriver).
③
(cable).
②
from the locating lugs
②
in the locating lugs.
③
and fix using the captive screws provided.
SINAMICS S120M Distributed Drive Technology
Manual, (GH12), 12/2014, 6SL3097-4AW00-0BP3
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