Danfoss VLT 8000 Drive Fault Codes:
| Fault Code and Meaning | Cause and Remedy |
|---|---|
| WARNING 1 Under 10 V (10 VOLT LOW) | Cause: The 10 V voltage from terminal 50 on the control card is below 10 V. The 10 Volts supply is overloaded. Remedy:
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| WARNING/ALARM 2 Live zero fault (LIVE ZERO ERROR) | Cause: The current or voltage signal on terminal 53, 54 or 60 is below 50% of the value preset in parameter 309, 312 and 315 (Terminal, min. scaling). |
| WARNING/ALARM 4 Mains imbalance (MAINS IMBALANCE) | Cause: High imbalance or phase missing on the supply side. Remedy:
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| WARNING 5 Voltage warning high (DC LINK VOLTAGE HIGH) | Cause: The intermediate circuit voltage (DC) is higher than the Voltage warning high limit. The controls of the frequency converter are still enabled. |
| WARNING 6 Voltage warning low (DC LINK VOLTAGE LOW) | Cause: The intermediate circuit voltage (DC) is lower than the Voltage warning low limit. The controls of the frequency converter are still enabled. |
| WARNING/ALARM 7 Overvoltage (DC LINK OVERVOLT) | Cause: The intermediate circuit voltage (DC) is higher than the Overvoltage limit of the inverter. The frequency converter will trip after a fixed period. Remedy:
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| WARNING/ALARM 8 Undervoltage (DC LINK UNDERVOLT) | Cause: The intermediate circuit voltage (DC) drops below the undervoltage limit of the inverter. The frequency converter will trip after a fixed period. Remedy:
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| WARNING/ALARM 9 Inverter overload (INVERTER TIME) | Cause: The electronic, thermal inverter protection reports that the AFD is about to cut out because of an overload (too high current for too long). Details:
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| WARNING/ALARM 10 Motor overtemperature (MOTOR TIME) | Cause: According to the electronic thermal protection (ETR), the motor is too hot. The motor is overloaded by more than 100% of the preset rated motor current for too long. Remedy:
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| WARNING/ALARM 11 Motor thermistor (MOTOR THERMISTOR) | Cause: The thermistor or the thermistor connection has been disconnected. Remedy:
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| WARNING/ALARM 12 Current limit (CURRENT LIMIT) | Cause: The current is higher than the value in parameter 215 (Current limit ILIM). The converter trips after the time set in parameter 412 has passed. |
| WARNING/ALARM 13 Overcurrent (OVER CURRENT) | Cause: The inverter peak current limit (approx. 200% of the rated current) has been exceeded. Remedy:
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| ALARM 14 Ground fault (GROUND FAULT) | Cause: There is a discharge from the output phases to ground, either in the cable between the AFD and the motor or in the motor itself. Remedy:
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| ALARM 15 Switch mode fault (SWITCH MODE FAULT) | Cause: Fault in the switch mode power supply (internal ± 15 V supply). Remedy:
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| ALARM 16 Short-circuiting (CURR. SHORT CIRCUIT) | Cause: There is short-circuiting on the motor terminals or in the motor itself. Remedy:
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| WARNING/ALARM 17 Serial communication timeout (STD BUSTIMEOUT) | Cause: There is no serial communication with the frequency converter. Remedy:
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| WARNING/ALARM 18 HPFB bus timeout (HPFB TIMEOUT) | Cause: There is no serial communication with the communication option card of the frequency converter. Remedy:
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| WARNING 19 Fault in the EEprom on the power card (EE ERROR POWER) | Cause: There is a fault on the power card EEPROM. The frequency converter will continue to function, but is likely to fail at the next power-up. Remedy:
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| WARNING 20 Fault in the EEprom on the control card (EE ERROR CONTROL) | Cause: There is a fault in the EEPROM on the control card. The frequency converter will continue to function, but is likely to fail at the next power-up. Remedy:
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| ALARM 22 Auto-optimisation not OK (AMA FAULT) | Cause: A fault has been found during automatic motor adaptation. The display indicates the specific sub-code: CHECK 103, 105 [0] Parameter 103 or 105 has a wrong setting. Correct setting and restart AMA. LOW P.105 [1] Motor is too small for AMA. Param 105 must be > 35% of rated output current. ASYMMETRICAL IMPEDANCE [2] Asymmetrical impedance detected in motor system. Motor could be defective. MOTOR TOO BIG [3] Motor is too big for AMA to be carried out. Check setting in parameter 102. MOTOR TOO SMALL [4] Motor is too small for AMA to be carried out. Check setting in parameter 102. TIME OUT [5] AMA fails because of noisy measuring signals. Try starting AMA again. Note: Repeated AMA runs may heat motor. INTERRUPTED BY USER [6] AMA has been interrupted by the user. INTERNAL FAULT [7] Internal fault in frequency converter. Contact Danfoss supplier. LIMIT VALUE FAULT [8] Parameter values found for the motor are outside acceptable range. MOTOR ROTATES [9] The motor shaft rotates. Ensure load cannot make motor rotate, then restart AMA. |
| ALARM 29 Heat sink temperature too high (HEAT SINK OVER TEMP.) | Cause: The cut-out temperature of the heat-sink has been reached (90°C or 80°C depending on enclosure). Remedy: The fault could be the following:
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| ALARM 30 Motor phase U missing (MISSING MOT.PHASE U) | Cause: Motor phase U between frequency converter and motor is missing. Remedy:
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| ALARM: 31 Motor phase V missing (MISSING MOT.PHASE V) | Cause: Motor phase V between frequency converter and motor is missing. Remedy:
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| ALARM: 32 Motor phase W missing (MISSING MOT.PHASE U) | Cause: Motor phase W between frequency converter and motor is missing. Remedy:
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| WARNING/ALARM: 34 HPFB communication fault (HPFB COMM. FAULT) | Cause: The serial communication on the communication option card is not working. |
| ALARM: 37 Inverter fault (GATE DRIVE FAULT) | Cause: IGBT or the power card is defective. Remedy:
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| WARNING: 39 CHECK PAR. 104, 106 | Cause: Parameters 104 Motor frequency fM,N, or 106 Rated motor speed nM,N, have probably not been set correctly. Remedy:
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| WARNING: 40 CHECK PAR. 103, 105 | Cause: Parameter 103 Motor voltage, UM,N or 105 Motor current, IM,N has not been set correctly. Remedy:
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| WARNING: 41 MOTOR TOO BIG (MOTOR TOO BIG) | Cause: The motor used is probably too big for AMA to be carried out. The setting in parameter 102 Motor power, PM,N may not match the motor. Remedy:
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| WARNING: 42 MOTOR TOO SMALL (MOTOR TOO SMALL) | Cause: The motor used is probably too small for AMA to be carried out. The setting in parameter 102 Motor power, PM,N may not match the motor. Remedy:
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| ALARM: 60 Safety stop (EXTERNAL FAULT) | Cause: Terminal 27 (parameter 304 Digital inputs) has been programmed for a Safety interlock [3] and is a logic “0”. |
| WARNING: 61 Output frequency low (FOUT < FLOW) | Cause: The output frequency is lower than parameter 223 Warning: Low frequency, fLOW. |
| WARNING: 62 Output frequency high (FOUT > FHIGH) | Cause: The output frequency is higher than parameter 224 Warning: High frequency, fHIGH. |
| WARNING/ALARM: 63 Output current low (I MOTOR < I LOW) | Cause: The output current is lower than parameter 221 Warning: Low current, ILOW. Remedy:
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| WARNING: 64 Output current high (I MOTOR > I HIGH) | Cause: The output current is higher than parameter 222 Warning: High current, IHIGH. |
| WARNING: 65 Feedback low (FEEDBACK < FDB LOW) | Cause: The resulting feedback value is lower than parameter 227 Warning: Low feedback, FBLOW. |
| WARNING: 66 Feedback high (FEEDBACK > FDB HIGH) | Cause: The resulting feedback value is higher than parameter 228 Warning: High feedback, FBHIGH. |
| WARNING: 67 Remote reference low (REF. < REF LOW) | Cause: The remote reference is lower than parameter 225 Warning: Low reference, REFLOW. |
| WARNING: 68 Remote reference high (REF. > REF HIGH) | Cause: The remote reference is higher than parameter 226 Warning:High reference, REFHIGH. |
| WARNING: 69 Temperature auto derate (TEMP.AUTO DERATE) | Cause: The heat sink temperature has exceeded the maximum value and the auto derating function (par. 411) is active. |
| WARNING: 99 Unknown fault (UNKNOWN ALARM) | Cause: An unknown fault has occurred that cannot be processed by the software. Remedy:
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