Forming - Siemens SIMOVERT MASTERDRIVES Betriebsanleitung

08.2009
10
CAUTION
How the serial
number is made up
Siemens AG
SIMOVERT MASTERDRIVES
Downloaded from www.Manualslib.com

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: A-N60147512345)
Digit
1 and 2
3
4
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.
Siemens Controls
6SE7087-6JD50
Operating Instructions
manuals search engine
Example Meaning
A- Place of manufacture
X 2009
A 2010
B 2011
C 2012
D 2013
E 2014
F 2015
1 to 9 January to September
O October
N November
D December
Not relevant for forming
Forming
10-1