Emergency Release Of The Door Safety Switch - ABB ACS5000 User Manual

ABB
10.6.6

Emergency release of the door safety switch

5k A UM
The door of the rectifier/inverter compartment is secured with a safety
switch. The safety switch is tied into an interlocking circuit that operates in
conjunction with the grounding switches of the drive and the interlocks
from the main circuit breaker of the drive. The interlocking system
ensures:
■ that the main power cannot be connected to the drive unless the door
is securely closed and the grounding switches are in position not
grounded,
■ that the door cannot be opened until the main power is disconnected,
the DC-link capacitors are discharged and the grounding switches
are in position grounded.
The door of the rectifier/inverter compartment also cannot be opened
■ if the drive is disconnected from the auxiliary power and
■ if the safety switch of the door is in position locked.
If the auxiliary voltage is switched off and the door is locked and cannot be
opened, check the position of the release dial of the safety switch. If the
release dial is in the locked position, unlock the safety switch as described
in the following section.
DANGER
Hazardous voltages!
Touching energized components can be fatal.
• Before you unlock a safety switch, verify that the drive is de-
energized.
• Do not unlock the safety switch permanently.
3BHS221906 ZAB E01 Rev. D
Chapter 10 - Preventive and corrective maintenance
10-25 (36)