Maintenance Tasks; Safety - ABB ACS6080 User Manual

9.4

Maintenance tasks

The following sections describe the maintenance tasks and associated
actions that you can perform on the drive.
9.4.1

Safety

▲ ⚠
DANGER
Hazardous voltages!
To avoid serious injury or death, read all instructions before performing
the maintenance tasks.
• Before you work on the drive, verify that:
- Main and auxiliary power supply to the drive are switched off,
locked out, and tagged out
- Drive is de-energized
- Grounding connections are in place
- Personal protective equipment is provided and used when
required
- Everyone involved is informed
• Before energizing the drive, verify that:
- All foreign objects are removed from the drive
- All internal and external covers are securely fastened and all
doors are closed, locked and / or secured (locking bar in locked
position)
- Release dials of safety switches are in locked position
• Before you remove a phase module from a cabinet:
- Connect the grounding equipment at the appropriate locations.
• When the motor is spinning, a HAZARDOUS VOLTAGE appears at the
output of the IOI switch in the RDC unit, even if the switch is open
and the drive is grounded.
- See the local safety procedures on how to isolate and ground
the equipment.
▲ ⚠
WARNING
Hazardous DC voltage!
Depending on the type of auxiliary supply, the drive can be equipped with
buffer capacitors inside the control unit. During operation, the capacitor
voltage is 300 V (DC) over ground.
• Wait 5 minutes for the capacitors to discharge.
• Before touching a capacitor, verify that the capacitors
are discharged.
3BHS842007 E01 REV C
09 PREVENTIVE AND CORRECTIVE MAINTENANCE
ACS6080 USER MANUAL 193/238