Hazardous Voltage; Discharge Time - Danfoss VLT FC 102 Installation Manual

VLT® Frequency Converters, 90–400 kW
Installation Guide
LIFTING HEAVY LOAD
The drive is heavy. Lifting heavy objects incorrectly can result in death, injury, or property damage.
Follow local safety regulations on lifting.

Check the weight of the drive. The weight is provided on the outside of the shipping box.

If lifting equipment is used, ensure that it is in proper working condition and can safely lift the weight of

the drive.
Test lift the drive to verify the proper center of gravity. Reposition the lifting point if not level.


HAZARDOUS VOLTAGE

Drives contain hazardous voltage when connected to AC or DC supply. Failure to perform installation, startup,
and maintenance by qualified personnel can result in death or serious injury.
Only qualified personnel must perform installation, startup, and maintenance.


DISCHARGE TIME

The drive contains DC-link capacitors, which can remain charged even when the drive is not powered. High
voltage can be present even when the warning indicator lights are off. Failure to wait the specified time after
power has been removed before performing service or repair work can result in death or serious injury.
Stop the motor

Disconnect all power sources, including permanent magnet type motors.

Wait for capacitors to discharge fully. The discharge time is specified on the drive product label.

Measure the voltage level to verify full discharge.
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UNINTENDED START
When the drive is connected to the AC mains or connected on the DC terminals, the motor may start at any
time, causing risk of death, serious injury, and equipment or property damage.
Stop the drive and motor before configuring parameters.

Make sure that the drive cannot be started by external switch, a fieldbus command, an input reference

signal from the control panel, or after a cleared fault condition.
Disconnect the drive from the mains whenever safety considerations make it necessary to avoid

unintended motor start.
Check that the drive, motor, and any driven equipment are in operational readiness.
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Installation
AN41701949085202-000201 / 130R1276