Siemens SINAMICS S120 Manual page 541

Date of manufacture
The date of manufacture can be determined as follows:
Table 10- 2
Procedure in the event of repair or replacement
A replacement Line Module or Motor Module or the corresponding replacement power block
has to be re-formed after being in storage for a period of more than two years.
The DC link capacitors are formed by connecting the line voltage without any load connected
for at least 30 minutes.
To do this, the DC link must be precharged (i.e. the Line Modules switched on), while the
controller for the existing Motor Modules must not be enabled for the specified length of
time.
Procedure for re-forming outside the drive line-up
Replacement power units which have to be held ready for immediate use in the event of
repair or replacement can also be re-formed individually and outside the drive line-up.
For this, the equipment must be connected to the forming circuits described in the following.
Components for the forming circuit (recommendation)
• One fuse switch 3 AC 400 V / 10 A or 690 V / 10 A
• Three incandescent lamps 230 V / 100 W for a line voltage of 3 AC 380 to 480 V.
Alternatively, use three resistors of 1 kΩ / 100 W each (e.g. GWK150J1001KLX000 from
Vishay) instead of the incandescent lamps.
Air-cooled chassis power units
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3
Production year and month
Character Year of manufacture
A
B
C
D
E
F
H
J
K
L
M
N
P
R
Character
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
Maintenance and Servicing
10.6 Forming the DC link capacitors
Month of manufacture
1 ... 9 January to September
O
N November
D December
October
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