ABB ACS2000 AFE 2MVA, Руководство пользователя

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CHAPTER 10 – PREVENTIVE AND CORRECTIVE MAINTENANCE 176
Replacing a phase module
1. Disconnect all power supplies to the drive and
ground the drive.
For further information, see
10.6.3 De-energiz-
ing the drive locally .
2. Install the cantilever on the cabinet roof; attach
the lifting hoist and lifting brackets (see 10-16 ).
3. Remove the acrylic cover.
Note: When working on the AFE, pull out the air
pressure tube at the bottom of the panel
(1) .
4. Remove the screws on each side of the phase
module.
5. (If using module rails) Slide the rails under the
phase module
(If using a module tray)
Anchor the tray to the
phase module. To do it:
- Holding the tray at an angle, insert the hook-
shaped ends of the tray behind the two
brackets of the phase module.
- Then lower the tray to engage the hooks
with the brackets.
DANGER
!
Hazardous voltages!
When a phase module is removed from the cabinet,
the grounding path between grounding switch and
PE ground busbar is interrupted.
For this reason, connect grounding equipment at
the appropriate locations. The grounding
equipment ensures that hazardous voltages
cannot be fed into the drive from the main power
supply or the motor.
10 mm
1
CAUTION
!
To prevent the phase module from dropping on
you, make sure the rails are slid completely under
the phase module.
10 mm