Warning And Alarm Definitions - Danfoss VLT AQUA Drive FC 202 Instruction Manual

Warnings and Alarms

8.4 Warning and Alarm Definitions

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 adjustable frequency drive 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 adjustable frequency drive
•
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 Make sure that the top and bottom clearance is adequate to ensure proper airflow 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
•
Grounding The unit requires a ground wire from its chassis to the building ground
•
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 ground
•
Input and output power Check for loose connections.
wiring
•
Check that motor and line power are in separate conduits or separated shielded cables
•
Panel interior Make sure 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 8.2 Start-up Check List
®
VLT AQUA Drive
Instruction Manual
®
MG20M922 - VLT is a registered Danfoss trademark
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