Siemens S120 Manual page 481

Forming circuit
The forming circuit can be built using incandescent lamps or, alternatively, resistors.
Components required for reforming outside the drive line-up
● 1 fuse switch, triple 400 V / 10 A or double 230 V / 10 A
● Cable 1.5 mm
● 3 incandescent lamps 230 V / 100 W for a line voltage of 380 - 480 V 3 AC.
● 2 incandescent lamps 230 V / 100 W for a line voltage of 200 - 240 V 1 AC.
● Various Small components, such as lamp socket, etc.
Danger to life due to electric shock caused by residual charge of the DC-link capacitors
Due to the DC link capacitors, a hazardous voltage is present in the DC link for up to 5
minutes after the power supply has been switched off.
Touching live components results in death or severe injury.
• Do not open the protective cover of the DC link until 5 minutes have elapsed.
• Measure the voltage before starting work on the DCP and DCN DC link terminals.
AC Drive
Manual, (GH6), 04/2014, 6SL3097-4AL00-0BP4
2
Alternatively, use 3 resistors of 1 kΩ / 100 W each (e.g. GWK150J1001KLX000 from
Vishay) instead of the incandescent lamps.
Alternatively, use 2 resistors of 1 kΩ / 100 W each (e.g. GWK150J1001KLX000 from
Vishay) instead of the incandescent lamps.
DANGER
Service and maintenance
11.4 Forming the DC link capacitors
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