Pre-Start Check List - Danfoss VLT AQUA Drive FC 202 Operating Manual

Pre-start Check List

6 Pre-start Check List
Before completing installation of the unit, inspect the entire installation as detailed in Table 6.1. Check and mark the items
when completed.
Inspect for
Motor
Switches
Auxiliary equipment
6 6
Cable routing
Control wiring
Input and output
power wiring
Grounding
Fuses and circuit
breakers
Cooling clearance
Ambient conditions
Interior of the drive
Vibration
Table 6.1 Pre-start Check List
68
VLT® AQUA Drive FC 202
Description
•
Confirm continuity of the motor by measuring ohm values on U–V (96–97), V–W (97–98), and W–U (98–96).
•
Confirm that the supply voltage matches the voltage of the drive and the motor.
•
Ensure that all switch and disconnect settings are in the proper positions.
•
Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers that reside on the input
power side of the drive or output side to the motor. Ensure that they are ready for full-speed operation.
•
Check function and installation of any sensors used for feedback to the drive.
•
Remove any power factor correction caps on motor.
•
Adjust any power factor correction caps on the mains side and ensure that they are dampened.
•
Ensure that motor wiring, brake wiring (if equipped), and control wiring are separated or shielded, or in 3
separate metallic conduits for high-frequency interference isolation.
•
Check for broken or damaged wires and loose connections.
•
Check that control wiring is isolated from high-power wiring for noise immunity.
•
Check the voltage source of the signals, if necessary.
•
Use shielded cable or twisted pair and ensure that the shield is terminated correctly.
•
Check for loose connections.
•
Check that motor and mains are in separate conduit or separated shielded cables.
•
Check for good ground connections that are tight and free of oxidation.
•
Grounding to conduit, or mounting the back panel to a metal surface, is not a suitable grounding.
•
Check for proper fusing or circuit breakers.
•
Check that all fuses are inserted firmly and are in operational condition and that all circuit breakers (if
used) are in the open position.
•
Look for any obstructions in the airflow path.
•
Measure top and bottom clearance of the drive to verify adequate airflow for cooling, see
chapter 4.5 Installation and Cooling Requirements.
•
Check that requirements for ambient conditions are met. See chapter 10.4 Ambient Conditions.
•
Inspect that the unit interior is free of dirt, metal chips, moisture, and corrosion.
•
Verify that all installation tools have been removed from unit interior.
•
For D3h and D4h enclosures, ensure that the unit is mounted on an unpainted, metal surface.
•
Check that the unit is mounted solidly, or that shock mounts are used, if necessary.
•
Check for an unusual amount of vibration.
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