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Electrical installation
Contents of this chapter
This chapter describes the electrical installation of the brake unit.
Electrical safety precautions
These electrical safety precautions are for all personnel who do work on the drive, motor
cable or motor.
WARNING!
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. Keep the cabinet doors closed when the drive is powered. With the doors open, a risk
of a potentially fatal electric shock, arc flash or high-energy arc blast exists.
2. Clearly identify the work location and equipment.
3. Disconnect all possible voltage sources. Lock out and tag out.
•
Open the main disconnecting device of the drive.
•
Open the charging switch if present.
•
Open the disconnector of the supply transformer. (The main disconnecting device
in the drive cabinet does not disconnect the voltage from the AC input power busbars
of the drive cabinet.)
•
If the drive is equipped with a DC/DC converter unit (optional): Open the DC
switch/disconnector ([Q11], option +F286) of the DC/DC converter. Open the
disconnecting device of the energy storage connected to the DC/DC converter unit
(outside the drive cabinet).
Electrical installation 29
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