ABB ACS2000 User Manual page 17

S a f e T y
—
Potential equipment hazards
09
When the drive is powered up, hazardous voltages
Potential equipment
hazard locations
are present inside the cabinet.
1
1
2
3
4
Potential equipment hazard locations
To maintain safety and minimize hazards, strictly
observe the following:
• Do not open the AFE/INU compartment door (3)
or remove an outside wall or a cover (4), as long as
the drive is energized
• Do not remove any of the covers (1) inside the
cabinet when the drive is energized
• Do not energize the equipment before all internal
covers (1) have been securely fastened
• Components inside the cabinet may be hot after
the drive has been in operation. Before opening a
cover or door, wait until the fan has stopped
• Use approved grounding practices when working
on the drive
Safety measures
To maintain safety when the equipment is powered
up, the door of the AFE/INU compartment (see 3 in
Figure 10) 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.
coU/TeU section
Inside covers of Terminal Entry Unit (TEU)
Locked door of low voltage COntrol Unit (COU)
Locked AFE/INU compartment door with Kirk® key mechanical interlock and grounding switch
Outside covers
2
3
front view
See section 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.
17
rear view
4