Danfoss VLT Decentral Drive FCD 302 Operating Manual page 33

VLT® Decentral Drive FCD 302
Operating Guide
Inspect for Description
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 considera- Check for proper installation regarding electromagnetic compatibility.
tions
Environmental con- See the equipment label for the maximum ambient operating temperature limits. Temperature is not
siderations 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 Check that all fuses are inserted firmly and in operational condition and that all circuit breakers are in
breakers the open position. Check for proper fusing or circuit breakers.
Input and output
• Check for loose connections.
power wiring
• 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 Ensure the installation box and the electronics part is properly closed. Check that all 4 fastening
and electronics screws are tightened with the right torque.
part
Cable glands and Ensure the cable glands and blind plugs are properly tightened to guarantee that the right enclosure
blind plugs protection degree is achieved. Liquids and/or excessive dust ingress in the drive can cause sub-opti-
mal 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.
INTERNAL FAILURE HAZARD
An internal failure in the drive can result in serious injury when the drive is not properly closed.
-
Ensure that all safety covers are in place and securely fastened before applying power.
Danfoss A/S © | 2020.07
C A U T I O N
Electrical Installation
AQ267036816112EN-000101 / 130R0208 | 33
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