Danfoss FC 102 Operating Instructions Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

Contents

10 Basic Troubleshooting10.1 Start Up and OperationSymptom Possible cause Test SolutionDisplay dark/No functionMissing input power See Table 4.1 Check the input power sourceMissing or open fuses or circuitbreaker trippedSee Open fuses and Tripped circuitbreaker in this table for possiblecausesFollow the recommendationsprovidedNo power to the LCP Check the LCP cable for properconnection or damageReplace the faulty LCP orconnection cableShortcut on control voltage(terminal 12 or 50) or at controlterminalsCheck the 24 V control voltagesupply for terminals 12/13 to 20-39or 10 V supply for terminals 50 to55Wire the terminals properlyWrong LCP (LCP from VLT® 2800or 5000/6000/8000/ FCD or FCM)Use only LCP 101 (P/N 130B1124)or LCP 102 (P/N 130B1107)Wrong contrast setting Press [Status] + [▲]/[▼] to adjustthe contrastDisplay (LCP) is defective Test using a different LCP Replace the faulty LCP orconnection cableInternal voltage supply fault orSMPS is defectiveContact supplierIntermittent displayOverloaded power supply (SMPS)due to improper control wiring ora fault within the frequencyconverterTo rule out a problem in thecontrol wiring, disconnect allcontrol wiring by removing theterminal blocks.If the display stays lit, then theproblem is in the control wiring.Check the wiring for shorts orincorrect connections. If the displaycontinues to cut out, follow theprocedure for display dark.Motor not runningService switch open or missingmotor connectionCheck if the motor is connectedand the connection is notinterrupted (by a service switch orother device).Connect the motor and check theservice switchNo mains power with 24 V DCoption cardIf the display is functioning but nooutput, check that mains power isapplied to the frequency converter.Apply mains power to run the unitLCP Stop Check if [Off] has been pressed Press [Auto On] or [Hand On](depending on operation mode) torun the motorMissing start signal (Standby) Check 5-10 Terminal 18 Digital Inputfor correct setting for terminal 18(use default setting)Apply a valid start signal to startthe motorMotor coast signal active(Coasting)Check 5-12 Coast inv. for correctsetting for terminal 27 (use defaultsetting).Apply 24 V on terminal 27 orprogram this terminal to nooperationWrong reference signal source Check reference signal: Local,remote or bus reference? Presetreference active? Terminalconnection correct? Scaling ofterminals correct? Reference signalavailable?Program correct settings. Check3-13 Reference Site. Set presetreference active in parametergroup 3-1* References. Check forcorrect wiring. Check scaling ofterminals. Check reference signal.Basic Troubleshooting Operating InstructionsMG16D302 Danfoss A/S © Rev. 06/2014 All rights reserved. 7310 10