Start Up And Commissioning; Pre-Start - Danfoss VLT AutomationDrive FC 302 Operating Instructions Manual

Start Up and Commissioning

4 Start Up and Commissioning

4.1 Pre-start

CAUTION
Before applying power to the unit, inspect the entire installation as detailed in Table 4.1. Check mark those items when
4 4
completed.
Inspect for
Auxiliary equipment
Cable routing
Control wiring
Cooling clearance
EMC considerations
Environmental consider-
ations
Fusing and circuit
breakers
Grounding
Input and output power
wiring
Panel interior
Switches
Vibration
Table 4.1 Start-up Checklist
36
Operating Instructions
Description
•
Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers on the input
power side of the frequency converter 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 frequency converter
•
Remove power factor correction caps on motors, if present
•
Use separate metallic conduits for each of the following:
•
input power
•
motor wiring
•
control wiring
•
Check for broken or damaged wires and loose connections
•
Check that control wiring is isolated from power and motor wiring for noise immunity
•
Check the voltage source of the signals, if necessary
•
The use of shielded cable or twisted pair is recommended. Ensure that the shield is terminated
correctly
•
Measure that top and bottom clearance is adequate to ensure proper air flow for cooling
•
Check for proper installation regarding electromagnetic compatibility
•
See equipment label for the maximum ambient operating temperature limits
•
Humidity levels must be 5–95% non-condensing
•
Check for proper fusing or circuit breakers
•
Check that all fuses are inserted firmly and in operational condition and that all circuit breakers are
in the open position
•
The unit requires a ground wire from its chassis to the building ground
•
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 ground
•
Check for loose connections
•
Check that motor and mains are in separate conduit or separated screened cables
•
Inspect that the unit interior is free of debris and corrosion
•
Ensure that all switch and disconnect settings are in the proper positions
•
Check that the unit is mounted solidly or that shock mounts are used, as necessary
•
Check for an unusual amount of vibration
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MG34U302