Figure 10-1 Dc Bus Voltage Indicator - Siemens SINAMICS PERFECT HARMONY GH180 Operating Instructions Manual

Maintenance
10.3 VFD Power Down and Door Access
6. Use the coded K1 key (released from the customer circuit breaker) to release the K2 keys for
the cabinet door (located in the key transfer unit on the VFD) if mechanical key interlocks are
provided.
7. The K2 keys released for the cabinet doors can be used to unlock the doors of the VFD.
8. Do not touch, remove, or service the power cells if the LED indicator is illuminated.
Figure 10-1 DC Bus Voltage Indicator
60
WARNING
Discharging Resistors
The power cells include discharge resistors to dissipate stored energy after the input voltage
is removed.
The power cell DC bus voltage decays to less than 50 Vdc in less than 10 minutes.
Obey all safety precautions to avoid risk of death, serious personal injury, and equipment
damage.
Type 6SR5 Air-Cooled
Operating Instructions, AK, A5E39390112