ABB
ACS 6000 Maintenance Manual
3BHS202077 ZAB E01 Rev. C
9-1 (8)
Chapter 9 - Changing Thyristors in EXU
The tools listed below are part of the tool set (ident. no. 3BHS130246)
delivered with the ACS 6000.
•
1/2 " reversible ratchet
•
13 mm drive socket (EXU for brushless excitation)
•
17 mm drive socket (EXU for direct excitation)
•
Deflection gauge
•
Sliding caliper
•
Cable ties
Before starting any work on the EXU do the following:
1
Deenergize and ground the ACS 6000.
Danger: The ACS 6000 is a high voltage device.
Make sure that the cabinet has been completely deenergized and that
power cannot be applied by accident.
Failure to do so may result in injury or death.
Note: After switching off the mains and after the motor has come to a stop,
allow the DC link capacitors to discharge. The light GND.- SWITCH
UNLOCKED must be on before grounding the ACS 6000.
2
Switch off the auxiliary power supply. Refer to the wiring diagrams to
identify the circuit breaker.
9.1
Required Tools and Accessories
9.2
Safety
