ABB ACS580MV, Hardware Manual

Page: 17 / 146

Safety instructions 17
Electrical safety in installation, start-up and maintenance

Precautions before electrical work
These warnings are for all personnel who do work on the drive, motor cable or motor.
Obey these instructions. If you ignore them, injury or death, or damage to the equipment
can occur. If you are not a qualified electrician, do not do installation or maintenance work.
Go through these steps before you begin any installation or maintenance work.
1. Clearly identify the work location.
2. Disconnect all possible voltage sources.
•
Open the main circuit breaker of the drive.
•
Wait until internal circuits are discharged completely and doors are unlocked (15
minutes).
•
Open the upstream disconnector to disconnect the supply voltage from the input
busbars.
•
Disconnect any external power sources from the control circuits before you do
work on the control cables.
3. Protect any other energized parts in the work location against contact.
4. Take special precautions when close to bare conductors (e.g. when the protective
plate between COU and TEU is removed).
DANGER
High voltage!
Before starting to work on the drive, make sure:
•
that the main and auxiliary power supply to the drive is switched off, locked out, and
tagged out
•
that the drive is dead
•
that safety ground connections are in place
•
that personal protective equipment is provided and used when required
•
that everyone involved is informed.
Before energizing the drive, make sure:
•
that all foreign objects are removed from the drive
•
that all internal and external covers are securely fastened and all doors are closed,
locked and / or bolted
•
that the release dials of safety switches are in the locked position.