3.1.2 Start Up Check List
CAUTION
Before applying power to the unit, inspect the entire
installation as detailed in
.
Inspect for
Description
☑
Auxiliary equipment
•
Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers located on input
power side of frequency converter, or output side to motor. Examine their operational readiness and
ensure that they are ready in all respects for operation at full speed.
•
Check function and installation of any sensors used for feedback to 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 connections
•
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 at both ends.
EMC
considerations
Check for proper installation regarding electromagnetic compatibility.
Environmental
considerations
See equipment label for the maximum ambient operating temperature limits. Temperature is not to
exceed 40
°
C (104
°
F). Humidity levels must be 5-95% non-condensing.
Cooling clearance
Units require top and bottom clearance adequate to ensure proper air flow for cooling.
Fusing and circuit
breakers
Check that all fuses are inserted firmly and in operational condition and that all circuit breakers are in the
open position. Check for proper fusing or circuit breakers.
Input and output
power wiring
•
Check for loose connections
•
Check for proper fusing or circuit breakers
Switches
Ensure that all switch and disconnect settings are in the proper position.
Grounding
The equipment requires a dedicated ground wire from its chassis to the plant ground. Check for good
ground connections that are tight and free of oxidation.
Installation box and
electronics part
Ensure the installation box and the electronics part is properly closed. Check that all four fastening screws
are tightened with the right torque.
Cable glands and
blind plugs
Ensure the cable glands and blind plugs are properly tightened, to guarantee the right enclosure
protection degree is achieved. Liquids and/or excessive dust ingress in the frequency converter can cause
sub-optimal performance or damage.
Vibration
Ensure the equipment is not exposed to a high level of vibration. Mount the panel solidly or use shock
mounts as necessary.
Table 3.1 Start Up Check List
Start Up and Functional Tes...
VLT
®
Decentral Drive FCD 302
28
Danfoss A/S © 05/2016 All rights reserved.
MG04F402
3
3