Start Up And Commissioning; Pre-Start - Danfoss VLT FC 322 Instruction Manual

Start Up and Commissioning

VLT® Automation VT Drive FC 322 D-Frame Instruction Manual
3 Start Up and Commissioning

3.1 Pre-start

CAUTION
Before applying power to the unit, inspect the entire
installation as detailed in Table 3.1. Check mark those items
when completed.
Inspect for Description
•
Auxiliary equipment Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers that may
reside 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 motor(s), if present.
•
Cable routing Ensure that input power, motor wiring , and control wiring are separated or in three separate
metallic conduits for high frequency noise isolation.
•
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.
•
Cooling clearance Measure that top and bottom clearance is adequate to ensure proper air flow for cooling.
•
EMC considerations Check for proper installation regarding electromagnetic compatibility.
•
Environmental consider- See equipment label for the maximum ambient operating temperature limits.
ations
•
Humidity levels must be 5-95% non-condensing.
•
Fusing and circuit Check for proper fusing or circuit breakers.
breakers
•
Check that all fuses are inserted firmly and in operational condition and that all circuit breakers
are in the open position.
•
Earthing (Grounding) The unit requires an earth wire(ground wire) from its chassis to the building earth (ground).
•
Check for good earth connections(ground connections) that are tight and free of oxidation.
•
Earthing (grounding) to conduit or mounting the back panel to a metal surface is not a
suitable earth (ground).
•
Input and output power Check for loose connections.
wiring
•
Check that motor and mains are in separate conduit or separated screened cables.
•
Panel interior Inspect that the unit interior is free of dirt, metal chips, moisture, and corrosion.
•
Switches Ensure that all switch and disconnect settings are in the proper positions.
•
Vibration Check that the unit is mounted solidly or that shock mounts are used, as necessary.
•
Check for an unusual amount of vibration.
Table 3.1 Start Up Check List
MG21E122 - VLT® is a registered Danfoss trademark
Remote Site Products - 1-888-532-2706 - www.remotesiteproducts.com
http://www.remotesiteproducts.com/p-20776-Danfoss-131X8139-VLT-Automation-VT-Drive-VFD-FC322-230V-20-HP.aspx
3 3
☑
3-1