Forming - Siemens simovert masterdrives Betriebsanleitung

02.2005
11

Forming

CAUTION
How the serial
number is made up
Siemens AG 6SE7087-6KP60
SIMOVERT MASTERDRIVES
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 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: F2SD123456)
Position Example
1 to 2 F2
3 R
S
T
U
4 1 to 9
O
N
D
5 to 14
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.
C / L+
D / L-
PE3
Fig. 11-1 Forming circuit
Operating Instructions
Meaning
Place of manufacture
2003
2004
2005
2006
January to September
October
November
December
Not relevant for forming
Motor
connection
Inverter
DC link
Forming
3AC 400 V
L1 L2 L3
2
1.5 mm
U2/T1
V2/T2
W2/T3
PE2
PE
11-1