Capacitor Forming - Siemens SIMOVERT MASTERDRIVES Betriebsanleitung

Start-Up
6.1

Capacitor forming

6-6
The DC link capacitors must be re-formed if the converter has been
non-operational for more than one year. If the converter was started-up
within one year after having been shipped (serial number on the rating
plate), it is not necessary to re-form the DC link capacitors.
Forming is realized by switching-in a rectifier and resistor, which is
connected to the DC link. The converter supply must be
disconnected (circuit: refer to Fig. 6-5)!
The forming period required depends on how long the braking unit has
been non-operational (see Fig. 6-6).
Position Example
1 and 2 F2
3 R
S
T
U
V
W
X
A
B
C
D
1 to 9
4
O
N
D
5 to 10
Table 6-2 Serial number structure
Significance / Example
Site of manufacture: Chemnitz
Manufacturing year: 2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
Manufacturing month: Jan. to Sept.
October
November
December
Not relevant for forming
(serial number)
6SE7087-6CX87-2DA1
Braking Unit SIMOVERT MASTERDRIVES
05.2009
Siemens AG