10.2001
Forming
Siemens AG
6SE7087-6JP60
SIMOVERT MASTERDRIVES
Operating Instructions
11-1
11 Forming
If a unit has been non-operational for more than one year, 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 one year after having been
manufactured, 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: F2ND0147512345)
Position
Example
Meaning
1 to 2
F2
Place of manufacture
3
N
P
R
S
2001
2002
2003
2004
4
1 to 9
O
N
D
January to September
October
November
December
5 to 14
Not relevant for forming
The following applies for the above example:
Manufacture took place in December 2001.
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
Aotewell Ltd
www.aotewell.com
Industry Automation
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