Installation Checklist - Danfoss VLT Midi Drive FC 280 Instruction Manual

Electrical Installation

4.9 Installation Checklist

Before completing installation of the unit, inspect the entire installation as detailed in Table 4.3. Check and mark the items
when completed.
Inspect for Description
•
Auxiliary equipment Look for auxiliary equipment, switches, disconnects or input fuses/circuit breakers, which 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 the function and installation of any sensors used for feedback to the adjustable frequency drive.
•
Remove any power factor correction capacitors on the motor(s).
•
Adjust any power factor correction capacitors on the line power side and ensure that they are dampened.
•
Cable routing Ensure that the motor wiring and control wiring are separated, screened or in 3 separate metallic conduits
for high-frequency interference isolation.
•
Control wiring Check for broken or damaged wires and loose connections.
•
Check that the 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 Ensure that the top and bottom clearance is adequate to ensure proper air flow for cooling, see
chapter 3.3 Mounting.
•
Ambient conditions Check that requirements for ambient conditions are met.
•
Fusing and circuit Check for proper fusing or circuit breakers.
breakers
•
Check that all fuses are inserted firmly and are in operational condition and that all circuit breakers are in
the open position.
•
Grounding Check for sufficient ground connections and ensure that they are tight and free of oxidation.
•
Do not ground to conduit or mount the back panel to a metal surface.
•
Input and output Check for loose connections.
power wiring
•
Check that the motor and line cables are in separate conduit or separated shielded cables.
•
Panel interior Inspect that the unit interior is free of dirt, metal chips, moisture and corrosion.
•
Check that the unit is mounted on an unpainted, metal surface.
•
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 4.3 Installation Check List
CAUTION
POTENTIAL HAZARD IN THE EVENT OF INTERNAL FAILURE
Risk of personal injury if the adjustable frequency drive is not properly closed.
•
Before applying power, ensure that all safety covers are in place and securely fastened.
MG07A122
Instruction Manual
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