Commissioning; Safety Instructions; Before Applying Power; Applying Power - Danfoss VLT FC 280 Operating Manual

VLT® Midi Drive FC 280
Operating Guide

5 Commissioning

5.1 Safety Instructions

See chapter Safety for general safety instructions.
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 qualified personnel can result in death or serious injury.
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Only qualified personnel must perform installation, start-up, and maintenance.
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
1. Close the safety cover properly.
2.
Check that all cable glands are firmly tightened.
3. Ensure that input power to the unit is off and locked out. Do not rely on the drive disconnect switches for input power
isolation.
4. Verify that there is no voltage on input terminals L1 (91), L2 (92), and L3 (93), phase-to-phase, and phase-to-ground.
5. Verify that there is no voltage on output terminals 96 (U), 97 (V), and 98 (W), phase-to-phase, and phase-to-ground.
6. Confirm continuity of the motor by measuring Ω values on U–V (96–97), V–W (97–98), and W–U (98–96).
7. Check for proper grounding of the drive and the motor.
8. Inspect the drive for loose connections on the terminals.
9. Confirm that the supply voltage matches the voltage of the drive and the motor.

5.2 Applying Power

Procedure
1.
Confirm that the input voltage is balanced within 3%. If not, correct the input voltage imbalance before proceeding. Repeat
this procedure after the voltage correction.
2. Ensure that any optional equipment wiring matches the installation application.
3. Ensure that all operator devices are in the OFF position. Panel doors must be closed and covers securely fastened.
4. Apply power to the unit. Do not start the drive now. For units with a disconnect switch, turn it to the ON position to apply
power to the drive.

5.3 Local Control Panel Operation

5.3.1 Introduction

The drive supports numerical local control panel (NLCP), graphic local control panel (GLCP), and blind cover. This section describes
the operations with NLCP and GLCP.
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The drive can also be programmed from the MCT-10 Set-up Software on PC via RS485 com-port. This software can be or-
dered using code number 130B1000 or downloaded from the Danfoss website:
downloads/dds/vlt-motion-control-tool-mct-10/#tab-downloads.
Danfoss A/S © 2022.02
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AQ381425076031en-000101 / 130R1223 | 35
Commissioning