Siemens SINAMICS S120 Manual page 802

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14.2 Forming the DC link capacitors
Date of manufacture
The date of manufacture can be determined as follows:
Table 14- 8 Production year and month
Character
A
B
C
D
E
F
H
J
K
L
M
The serial number is found on the rating plate.
Forming circuit
A defined voltage and a limited current are applied to the DC-link capacitors when forming
them. As a consequence, the internal relationships required for the DC-link capacitors to
function correctly are re-established.
The forming circuit is configured using incandescent lamps or alternatively, PTC resistors.
Components required (recommendation)
● 1 fuse switch 3-phase 400 V / 10 A
● Cable 1.5 mm
● 3 PTC resistors 350 Ω / 35 W
(recommendation: PTC-35W PTC800620-350 Ohm, Michael Koch GmbH)
● 3 incandescent lamps 230 V / 100 W
● Various small components, such as lamp socket, etc.
802
Year of manufacture
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2
Character
1 ... 9
O
N
D
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Month of manufacture
January to September
October
November
December
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