Danfoss VLT HVAC Basic Drive Programming Manual

Also see for VLT HVAC: Instructions Operating instructions Design guide Instruction Operating instructions

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Danfoss VLT HVAC Basic Drive Programming Manual Manual pdf 78 page image

4.1.3 Extended Status WordsBit Hex Dec16-94 Ext.Status Word16-95 Ext. StatusWord 20 1 1 Ramping Off1 2 2 AMA running Hand/Auto2 4 4 Start CW/CCW 03 8 8 0 04 10 16 0 05 20 32 0 Relay 12 active6 40 64 0 07 80 128Outputcurrent high Control Ready8 100 256Outputcurrent low Drive Ready9 200 512 0 Quick Stop10 400 1024 0 DC Brake11 800 2048 0 Stop12 1000 4096 0 013 2000 8192 BrakingFreeze OutputRequest14 4000 16384 0 Freeze Output15 8000 32768 OVC active Jog Request16 10000 65536 AC brake Jog17 20000 131072 0 Start request18 40000 262144 0 Start19 80000 524288 0 020 100000 1048576 0 Start Delay21 200000 2097152Local Ref./Remote Ref. Sleep22 400000 4194304 0 Sleep boost23 800000 8388608 0 Running24 1000000 16777216 0 Bypass25 2000000 33554432 0 Fire Mode26 4000000 67108864 0 External Interlock27 8000000 134217728 0Firemodelimi-texceed28 10000000 268435456 0 FlyStart Active29 20000000 536870912 0 030 40000000 1073741824 0 031 80000000 2147483648 Database busy 04.1.4 Fault MessagesWARNING/ALARM 2, Live zero errorThis warning or alarm will only appear if programmed by theuser in 6-01 Live Zero Timeout Function. The signal on one ofthe analog inputs is less than 50% of the minimum valueprogrammed for that input. This condition can be caused bybroken wiring or faulty device sending the signal.Troubleshooting:Check connections on all the analog inputterminals. Control card terminals 53 and 54 forsignals, terminal 55 common.Check that the drive programming match theanalog signal type.WARNING/ALARM 4, Mains phase loss A phase is missing onthe supply side, or the mains voltage imbalance is too high.This message also appears for a fault in the input rectifier onthe frequency converter. Options are programmed at14-12 Function at Mains Imbalance.Troubleshooting: Check the supply voltage and supplycurrents to the frequency converter.WARNING/ALARM 7, DC overvoltageIf the intermediate circuit voltage exceeds the limit, thefrequency converter trips after a time.Troubleshooting:Extend the ramp timeActivate functions in 2-10 Brake FunctionWARNING/ALARM 8, DC under voltageIf the intermediate circuit voltage (DC) drops below theunder voltage limit, the frequency converter trips after afixed time delay. The time delay varies with unit size.Troubleshooting:Check that the supply voltage matches thefrequency converter voltage.Perform Input voltage testWARNING/ALARM 9, Inverter overloadedThe frequency converter is about to cut out because of anoverload (too high current for too long). The counter forelectronic, thermal inverter protection gives a warning at90% and trips at 100%, while giving an alarm. The frequencyconverter cannot be reset until the counter is below 90%.The fault is that the frequency converter is overloaded bymore than 100% for too long.Troubleshooting:Compare the output current shown on the LCPwith the drive rated current.Compare the output current shown on the LCPwith measured motor current.Troubleshooting VLT HVAC Basic Drive Programming GuideMG.18.B1.02 - VLT® is a registered Danfoss trademark 774 4