What to do if Danfoss DC Drives display AMA check Unom and Inom?
If Danfoss DC Drives display AMA check Unom and Inom, it means the setting of motor voltage, motor current, and motor power is presumably wrong. Check the settings.
Why is the Danfoss Controller motor not reaching maximum speed?
If the motor is not reaching maximum speed, it could be because the frequency limits are set wrong, so program the correct limits. Another possibility is that the reference input signal is not scaled correctly, so program the correct settings.
What causes acoustic noise or vibration in Danfoss Controller?
Acoustic noise or vibration in your Danfoss Controller can be attributed to resonances, possibly in the motor or fan system. Check if the noise and/or vibration have been reduced to an acceptable limit.
Why does the Danfoss Controller motor run rough?
If the motor runs rough, it could be due to overmagnetisation. Check motor settings in parameter groups 1-2* Motor Data, 1-3* Adv Motor Data, and 1-5* Load Indep. Setting.
What does Torque limit mean in Danfoss DC Drives?
If Danfoss DC Drives show Torque limit, it means the torque is higher than the value in 4-16 Torque Limit Motor Mode or the torque is higher than the value in 4-17 Torque Limit Generator Mode.
What causes 'Start Failed' in Danfoss DC Drives?
If Danfoss DC Drives have 'Start Failed', it means the speed has not been able to exceed 1-77 Compressor Start Max Speed [RPM] during the start. This may be caused by a blocked rotor.
What to do if Danfoss DC Drives display motor thermistor over temp error?
If Danfoss DC Drives display motor thermistor over temp error, it means the thermistor or the thermistor connection is disconnected. Check that the thermistor is connected correctly between terminal 53 or 54 (analog voltage input) and terminal 50 (+ 10 V supply), or between terminal 18 or 19 (digital input PNP only) and terminal 50.
Why is the motor not running on my Danfoss VLT FC 103 DC Drives?
If the motor is not running with your Danfoss DC Drives, ensure the service switch is not open and the motor connection is secure. If you have a 24 V DC option card, make sure mains power is applied to run the unit. If LCP Stop is active, press [Auto On] or [Hand On] (depending on the operation mode) to start the motor. Apply a valid start signal. Ensure the motor coast signal is not active by applying 24 V on terminal 27 or program this terminal to No operation. Also, verify the correct reference signal source is programmed and wired correctly.
What causes motor current imbalance in Danfoss VLT FC 103 DC Drives?
If the motor current imbalance is greater than 3% in your Danfoss DC Drives, the issue might stem from the motor or its wiring. If the imbalanced leg follows the wire, inspect the motor and its wiring. If the problem persists, contact the supplier.
How to correct motor direction on Danfoss VLT FC 103?
If the motor is running in the wrong direction with your Danfoss DC Drives, it could be due to the motor rotation limit being incorrectly set. Program the correct settings. Another cause might be an active reversing signal; deactivate it. Finally, check the motor phase connection.
General| Protection Class | IP20 |
|---|---|
| Series | VLT FC 103 |
| Input Voltage | 380-480 V |
| Communication Protocols | CANopen |
| Supply voltage | 380-480 V AC |
| Frequency | 50 Hz or 60 Hz |
| Enclosure | IP20 |
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