Siemens 6SL3210-1SB11-0UA0 [293/318] Date of manufacture

Siemens 6SL3210-1SB14-0AA0 [293/318] Date of manufacture
Service and maintenance
11.3 Forming the DC link capacitors
Manual
Manual, 01/2011, 6SL3097-4AC10-0BP2
293
11.3 Forming the DC link capacitors
CAUTION
If the Power Modules are kept in storage for more than two years, the DC link capacitors
have to be reformed. If this is not performed, the units could be damaged when they are
switched on.
If the cabinet 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.
Note
It is important that the storage period is calculated from the date of manufacture and not from
the date that the equipment was shipped.
Date of manufacture
The date of manufacture can be determined from the following assignment to the serial
number (e.g. T-S92067000015 for 2004, September):
Table 11- 1 Production year and month
Character Year of manufacture Character Month of manufacture
S 2004 1 to 9 January to September
T 2005 O October
U 2006 N November
V 2007 D December
W 2008
X 2009
A 2010
B 2011
The serial number is found on the rating plate.
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 re-established for them to
be re-used as DC link capacitors.

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