Danfoss VLT 5000 Fault codes 1
Hi everyone,
Motor runs unevenly:
- Check if the VFD settings are correct. Adjust motor data settings if needed.
- If adjusting settings doesn't help, contact Danfoss for support.
Motor does not run:
- Check the display for a backlight. If there's a backlight, look for any fault messages and refer to the Warnings section.
- If there's no backlight, ensure the VFD is connected to the power supply. If it is, proceed to the next step.
Motor does not brake:
- Refer to the manual for instructions on controlling the brake function.
No message or backlight in display:
- Check if the pre-fuses for the VFD have blown. If they have, contact Danfoss.
- If the fuses are okay, check for an overloaded control card. Disconnect control signal plugs and see if the fault disappears.
Motor stopped, light in display, but no fault report:
- Try starting the VFD by pressing the [START] button.
- If the display is frozen, check cable connections. Ensure the motor is connected and all phases are okay.
- Set the VFD for local operation and adjust the reference value. Check if the motor runs. If not, contact Danfoss.
+ WARNING 1:
+ Under 10 Volts (10 VOLT LOW):
+ The 10 Volts voltage from terminal 50 on the control card is below 10 Volts.
+ Solution: Remove some of the load from terminal 50, as the 10 Volts supply is overloaded. Max. 17 mA/min. 590 Ω.
+ WARNING/ALARM 2:
+ Live zero fault (LIVE ZERO ERROR):
+ The current signal on terminal 60 is less than 50% of the value set in parameter 315 Terminal 60, min. scaling.
+ WARNING/ALARM 3:
+ No motor (NO MOTOR):
+ The motor check function (see parameter 122) indicates that no motor has been connected to the output of the frequency converter.
+ WARNING/ALARM 4:
+ Phase fault (MAINS PHASE LOSS):
+ A phase is missing on the supply side or the mains voltage imbalance is too high. This message can also appear if there is a fault in the input rectifier on the frequency converter.
+ Solution: Check the supply voltage and supply currents to the frequency converter.
+ WARNING 5:
+ Voltage warning high (DC LINK VOLTAGE HIGH):
+ The intermediate circuit voltage (DC) is higher than the overvoltage limit of the control SYSTEM. The frequency converter is still active.
+ WARNING 6:
+ Voltage warning low (DC LINK VOLTAGE LOW):
+ The intermediate circuit voltage (DC) is below the undervoltage limit of the control SYSTEM. The frequency converter is still active.
+ WARNING/ALARM 7:
+ Overvoltage (DC LINK OVERVOLT):
+ If the intermediate circuit voltage (DC) exceeds the inverter overvoltage limit, the frequency converter will trip after the time set in parameter 410 has passed.
+ Solution: The fault can be eliminated by connecting a brake resistor (if the frequency converter has an integral brake chopper, EB or SB) or by extending the time chosen in parameter 410. In addition, Brake function/overvoltage control can be activated in parameter 400.
+ WARNING/ALARM 8:
+ Undervoltage (DC LINK UNDERVOLT):
+ If the intermediate circuit voltage (DC) drops below the inverter lower voltage limit, it will be checked whether 24 V power supply is connected. If no 24 V power supply is connected, the frequency converter will trip after a given time that depends on the unit.
+ Solution: Check whether the supply voltage matches the frequency converter, see technical data.
+ WARNING/ALARM 9:
+ Inverter overload (INVERTER TIME):
+ The electronic, thermal inverter protection reports that the frequency converter is about to cut out because of an overload (too high current for too long). The counter for electronic, thermal inverter protection gives a warning at 98% and trips at 100%, while giving an alarm. The frequency converter cannot be reset until the counter is below 90%.
+ Solution: The fault is that the frequency converter is overloaded by more than 100% for too long.
+ WARNING/ALARM 10:
+ Motor overtemperature (MOTOR TIME):
+ According to the electronic thermal protection (ETR), the motor is too hot. Parameter 128 allows a choice of whether the frequency converter is to give a warning or an alarm when the counter reaches 100%. The fault is that the motor is overloaded by more than 100% for too long. Check that motor parameters 102-106 have been set correctly.
+ WARNING/ALARM 11:
+ Motor thermistor (MOTOR THERMISTOR):
+ The thermistor or the thermistor connection has been disconnected. Parameter 128 allows a choice of whether the frequency converter is to give a warning or an alarm. Check that the thermistor has been correctly connected between terminal 53 or 54 (analogue voltage input) and terminal 50 (+ 10 Volts supply).
+ WARNING/ALARM 12:
+ Torque limit (TORQUE LIMIT):
+ The torque is higher than the value in parameter 221 (in motor operation) or the torque is higher than the value in parameter 222 (in regenerative operation).
+ WARNING/ALARM 13:
+ Overcurrent (OVERCURRENT):
+ The inverter peak current limit (approx. 200% of the rated current) has been exceeded. The warning will last approx. 1-2 seconds, following which the frequency converter will trip, while giving an alarm. Turn off the frequency converter and check whether the motor shaft can be turned and whether the motor size matches the frequency converter. If extended mechanical brake control is selected, trip can be reset externally.
+ Danfoss VLT 5000 user manual
+ Danfoss VLT 5000 Fault index >>
+ Danfoss Main Page (2) >>
+ VFD Home page >>
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