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

Warnings and Alarms
Warning LED
Warning On
Alarm Off
Trip-Lock On
Table 8.1 Status Indicator Lights Explanations

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
•
•
•
Cable routing
•
Control wiring
•
•
•
•
Cooling clearance
•
EMC considerations
•
Environmental consider-
ations
•
•
Fusing and circuit
breakers
•
•
Earthing (Grounding)
•
•
•
Input and output power
wiring
•
•
Panel interior
•
Switches
•
Vibration
•
Table 8.2 Start Up Check List
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
®
VLT AQUA Drive
Operating Instructions
Alarm LED
Off
On (Flashing)
On (Flashing)
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 power factor correction caps on motor(s), if present
Ensure that input power, motor wiring , and control wiring are separated or in three separate
metallic conduit s for high frequency noise 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
Check for proper installation regarding electromagnetic compatibility
See equipment label for the maximum ambient operating temperature limits
Humidity levels must be 5-95% non-condensing
Check for proper fusing or circuit breakers
Check that all fuses are inserted firmly and in operational condition and that all circuit breakers are
in the open position
The unit requires an earth wire (ground wire) from its chassis to the building earth (ground)
Check for good earth connections (ground connections) that are tight and free of oxidation
Earthing (grounding) to conduit or mounting the back panel to a metal surface is not a suitable
earth (ground)
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
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
®
MG20M902 - VLT is a registered Danfoss trademark
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