3BHS799208 E01 REV E ACS5000 WATER-COOLED USER MANUAL 177/186
10 PREVENTIVE AND CORRECTIVE MAINTENANCE
10.6.5 Emergency release of a door safety switch
10.6.5.1 Location of safety switches
Each primary and each secondary PCU is equipped with a safety switch.
The safety switches block and release the locking bars, depending on
whether or not the drive is discharged and grounded. This prevents doors
from being opened unintentionally during operation.
In 1700 mm PCUs, the safety switches are on the back of the left door.
In 2100 mm PCUs, the safety switches are on the back of the middle door.
A screw cap on the front of the door marks the exact position.
Figure 10-6 Location of safety switches
▲ DANGER ⚠
Hazardous voltages!
Touching energized components can be fatal.
• Before you unlock a safety switch, de-energize and ground the drive
according to“10.6.2 De-energizing the drive” on page 172.
• Do not unlock the safety switches permanently.
(1) Safety switch
1
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