ABB ACS2000 DFE, User Manual

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ACS2000 User manual 2UEA001270 Rev. F 1-9 (12)
Chapter 1 - Safety
1.6 Safety measures
To maintain safety when the equipment is powered up, the door of the
AFE/INU compartment (see 3 in Figure 1-5) is secured by two safety
measures. Frame 3 drives also include a third safety measure, the door
interlocking mechanism. The door will not open unless these safety steps
are completed.
The grounding switch must be moved to the grounded position, which can
only be done after the DC link capacitors have been discharged.
See section 2.3 Doors and door locks for further information.
Frame 1 The Kirk key mechanical interlock allows access to the AFE/INU door only
after the main power has been switched off and the ground switch is
moved to the grounded position.
Frame 2 The Kirk key mechanical interlock allows access to the filter compartment
door only after the main power has been switched off and the ground
switch is moved to the grounded position. Once this door has been
opened, the AFE/INU door can be opened by releasing the top and bottom
draw latches located inside the door.
Frame 3 The Kirk key mechanical interlock allows access to the filter compartment
door only after the main power has been switched off and the ground
switch is moved to the grounded position. Once this door has been
opened, the left AFE/INU door can be opened. After opening this door, the
right AFE/INU door can be opened by releasing the top and bottom draw
latches located inside the door.
A spring-loaded rotating bar with door stops, located just inside the AFE/
INU doors at the bottom of the cabinet, provides interlocking between filter
compartment door and converter doors, requiring the doors to be closed
in the reverse order. The right AFE/INU door must be closed and latched,
followed by the left AFE/INU door and, finally, the filter compartment door.
DANGER
Hazardous voltage!
All doors must be closed and secured to prevent unintentional contact with
energized components.
• Check the interlocking mechanism is operable before turning the
drive on. Repair or replace the interlocking mechanism if it is
damaged.
• Use care when servicing the drive, being careful not to step on the
interlocking mechanism. Excessive pressure could cause the bar to
bend.
• Do not disable this safety feature.