2 CG Drives & Automation 01-7318-01r1
Voltage tests (Megger)
Do not carry out voltage tests (Megger) on the motor, before
all the motor cables have been disconnected from the active
front end and variable speed drive.
Condensation
If the active front end or motor inverter is moved from a
cold (storage) room to a room where it will be installed,
condensation can occur. This can result in sensitive
components becoming damp. Do not connect the mains
voltage until all visible dampness has evaporated.
Incorrect connection
The Active front end or motor inverter drive is not protected
against incorrect connection of the mains voltage, and in
particular against connection of the mains voltage to the
motor outputs U, V and W. The Active front end or motor
inverter can be damaged in this way.
Power factor capacitors for improving
cos
ϕ
Remove all capacitors from the motor and the motor
outputs.
Precautions during Auto-reset
When the automatic reset is active, the motor will restart
automatically provided that the cause of the trip has been
removed. If necessary take the appropriate precautions.
Transport
To avoid damage, keep the active front end and motor
inverter in its original packaging during transport. This
packaging is specially designed to absorb shocks during
transport.
IT Mains supply
The Active front end can be modified for an IT mains
supply, (non-earthed neutral), please contact your supplier
for details.
Heat warning
DC-link residual voltage
Be aware of specific parts on the Active front
end and motor inverter having high
temperature.
WARNING!
After switching off the mains supply,
dangerous voltage can still be present in the
Active front end-AFR/AFG or motor inverter-
AC drive. When opening the equipment for installing
and/or commissioning activities wait at least 7 minutes.
In case of malfunction a qualified technician should
check the DC-link or wait for one hour before
dismantling the AFR/AFG or AC drive for repair.
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