Siemens 12-0TP50, Operating Instructions Manual

Page: 254 / 305

06.2006 Forming
Siemens AG 6SE7087-6KP50
SIMOVERT MASTERDRIVES Operating Instructions
10-1
10 Forming
If a unit has been non-operational for more than two years, the DC link
capacitors have to be newly formed. If this is not carried out, the unit
can be damaged when the line voltage is powered up.
If the unit was started up within two years of manufacture, the DC link
capacitors do not have to be re-formed. The date of manufacture of the
unit can be read from the serial number.
(Example: F2SD123456)
Position Example Meaning
1 to 2 F2 Place of manufacture
3 R
S
T
U
V
W
2003
2004
2005
2006
2007
2008
4 1 to 9
O
N
D
January to September
October
November
December
5 to 10 Not relevant for forming
The following applies for the above example:
Manufacture took place in December 2004.
During forming a defined voltage and a limited current are applied to
the DC link capacitors and the internal conditions necessary for the
function of the DC link capacitors are restored again.
CAUTION
How the serial
number is made up