Installation Check List - Danfoss VLT FC 102 Operating Instructions Manual

Electrical Installation

4.9 Installation Check List

Before completing installation of the unit, inspect the entire installation as detailed in Table 4.5. Check and mark the items
when completed.
Inspect for
Auxiliary equipment
4 4
Cable routing
Control wiring
Cooling clearance
Ambient conditions
Fusing and circuit
breakers
Grounding
Input and output
power wiring
Panel interior
Switches
Vibration
Table 4.5 Installation Check List
CAUTION
POTENTIAL HAZARD IN THE EVENT OF INTERNAL FAILURE!
Risk of personal injury when the frequency converter is not properly closed. Before applying power, ensure all safety
covers are in place and securely fastened.
20
®
VLT
Description
•
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 any power factor correction caps on motor(s)
•
Adjust any power factor correction caps on the mains side and ensure that they are dampened
•
Ensure that motor wiring and control wiring are separated or screened 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 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, see
3.3 Mounting
•
Check that requirements for ambient conditions are met
•
Check for proper fusing or circuit breakers
•
Check that all fuses are inserted firmly and are in operational condition and that all circuit breakers are in
the open position
•
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 loose connections
•
Check that motor and mains are in separate conduit or separated screened cables
•
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
•
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
HVAC Drive Operating Instructions
MG11AJ02 - Rev. 2013-07-31
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