Warning LED Alarm LEDWarning On OffAlarm Off On (Flashing)Trip-Lock On On (Flashing)Table 8.1 Status Indicator Lights Explanations8.4 Warning and Alarm DefinitionsCAUTIONBefore applying power to the unit, inspect the entireinstallation as detailed in Table 3.1. Check mark those itemswhen completed.Inspect for Description ☑Auxiliary equipment • Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers that may resideon the input power side of the frequency converter or output side to the motor. Ensure that theyare 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 presentCable routing • Ensure that input power, motor wiring , and control wiring are separated or in three separatemetallic conduit s for high frequency noise isolationControl 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 terminatedcorrectlyCooling clearance • Measure that top and bottom clearance is adequate to ensure proper air flow for coolingEMC considerations • Check for proper installation regarding electromagnetic compatibilityEnvironmental consider-ations• See equipment label for the maximum ambient operating temperature limits• Humidity levels must be 5-95% non-condensingFusing and circuitbreakers• Check for proper fusing or circuit breakers• Check that all fuses are inserted firmly and in operational condition and that all circuit breakers arein the open positionEarthing (Grounding) • 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 suitableearth (ground)Input and output powerwiring• Check for loose connections• Check that motor and mains are in separate conduit or separated screened cablesPanel interior • Inspect that the unit interior is free of dirt, metal chips, moisture, and corrosionSwitches • Ensure that all switch and disconnect settings are in the proper positionsVibration • Check that the unit is mounted solidly or that shock mounts are used, as necessary• Check for an unusual amount of vibrationTable 8.2 Start Up Check ListWarnings and Alarms VLT® AQUA DriveOperating InstructionsMG20M902 - VLT® is a registered Danfoss trademark 538 8Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: info@ctiautomation.net