Forming - Siemens Simovert Masterdrives Operating Instructions Manual

08.2009
10

Forming

CAUTION
How the serial
number is made up
Siemens Controls
Siemens AG 6SE7087-6JD50
SIMOVERT MASTERDRIVES
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: A-N60147512345)
Digit Example
1 and 2 A-
3 X
A
B
C
D
E
F
4 1 to 9
O
N
D
5 to 14
The following applies for the above example:
Manufacture took place in June 2001.
During forming, the DC link of the unit is connected up via a rectifier, a
smoothing capacitor and a resistor.
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.
Operating Instructions
Meaning
Place of manufacture
2009
2010
2011
2012
2013
2014
2015
January to September
October
November
December
Not relevant for forming
Forming
10-1