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5 Commissioning
5.1 Safety Instructions
See chapter Safety for general safety instructions.
W A R N I N G
HAZARDOUS VOLTAGE
AC drives contain hazardous voltage when connected to the AC mains or connected on the DC terminals. Failure to perform
installation, start-up, and maintenance by skilled personnel can result in death or serious injury.
Only skilled personnel must perform installation, start-up, and maintenance.
N O T I C E
The front covers with warning signs are an integrated part of the drive and considered safety covers. The covers must be in place
before applying power and at all times.
5.1.1 Before Applying Power
Procedure
Close the safety cover properly.
Check that all cable glands are firmly tightened.
Ensure that input power to the unit is off and locked out. Do not rely on the drive disconnect switches for input power
isolation.
Verify that there is no voltage on input terminals L1 (91), L2 (92), and L3 (93), phase-to-phase, and phase-to-ground.
Verify that there is no voltage on output terminals 96 (U), 97 (V), and 98 (W), phase-to-phase, and phase-to-ground.
Confirm continuity of the motor by measuring Ω values on U–V (96–97), V–W (97–98), and W–U (98–96).
Check for proper grounding of the drive and the motor.
Inspect the drive for loose connections on the terminals.
Confirm that the supply voltage matches the voltage of the drive and the motor.
AQ267037727118en-000101 / 130R030022 | Danfoss A/S © 2021.01
Commissioning
VLT® AutomationDrive FC 301/FC 302
Operating Guide
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