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 electrical professional, 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 and equipment.
2. Disconnect all possible voltage sources. Make sure that
re-connection is not possible. 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.)
• Close the grounding switch or switches ([Q9], option +F259)
if present. Do not use excessive force as the switch has
electromagnetic interlocking.
• 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).
• Open the auxiliary voltage switch-disconnector (if present),
and all other possible disconnecting devices that isolate the
drive from dangerous voltage sources.
• In the liquid cooling unit (if present), open the motor protective
circuit breaker(s) of the cooling pumps.
12 Safety instructions
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