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11.4 Inspection of the DC link capacitors of the PM modules
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©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
11.4
Inspection of the DC link capacitors of the PM modules
!
Caution
After the devices have been non–operational in a no–voltage condition for
more than two years, the DC link capacitors must be reformed. If this is not
done, when the devices are switched on they can be damaged.
The production date can be derived from the following assignment to the serial
number (e.g. S T-S9
VVVVVVV
für 2004, September):
Table 11-4
Production year a und Production month
Key
Production year
Key
Production month
A
1990, 2010
1
January
B
1991, 2011
2
February
C
1992, 2012
3
March
D
1993, 2013
4
April
E
1994, 2014
5
May
F
1995, 2015
6
June
H
1996, 2016
7
July
J
1997, 2017
8
August
K
1998, 2018
9
September
L
1999, 2019
O
October
M
2000, 2020
N
November
N
2001, 2021
D
December
P
2002, 2022
R
2003, 2023
S
2004, 2024
T
2005, 2025
U
2006, 2026
V
2007, 2027
W
2008, 2028
X
2009, 2029
The serial number is stamped on the type plate.
When forming, the DC link capacitors are subject to a defined voltage
and a limited current. This means that the internal relationships requi-
red for the DC link capacitors to function are restored.
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 manufactu-
re
11 Spare Parts and Service
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