Why does Danfoss VLT CANopen MCA 105 DC Drives motor run rough?
If the motor runs rough with your Danfoss DC Drives, it could be due to overmagnetization. Check the motor settings in parameter groups 1-2* Motor Data, 1-3* Addl. Motor Data, and 1-5* Load Indep. Setting.
Why is motor speed unstable in Danfoss DC Drives?
If the motor speed is unstable in your Danfoss DC Drives, it might be due to incorrect parameter settings. Review the settings in parameter group 1-6* Load Depen. Setting. For closed-loop operation, check settings in parameter group 20-0* Feedback.
Why Danfoss VLT CANopen MCA 105 motor will not brake?
If the motor will not brake in your Danfoss DC Drives, review the brake parameters and ensure they are correctly configured. Also, check if the ramp-down times are too short.
How to troubleshoot motor thermistor overtemp in Danfoss VLT CANopen MCA 105?
If you are getting a motor thermistor overtemp warning on your Danfoss DC Drives, check whether the thermistor is disconnected. Also, check for motor overheating and if the motor is mechanically overloaded. When using terminal 53 or 54, ensure the thermistor is correctly connected between either terminal 53 or 54 (analog voltage input) and terminal 50 (+10 V supply), and that the terminal switch for 53 or 54 is set for voltage. If using terminal 18, 19, 31, 32, or 33 (digital inputs), ensure the thermistor is correctly connected between the digital input terminal used (digital input PNP only) and terminal 50.
What causes line power current imbalance greater than 3% in Danfoss DC Drives?
If you notice a line power current imbalance greater than 3% in your Danfoss DC Drives, it could be a problem with the line power supply itself. Check the line power supply. If the imbalance remains on the same input terminal, there may be a problem with the unit, and you should contact the supplier.
How to fix a short circuit in Danfoss VLT CANopen MCA 105 DC Drives?
If your Danfoss DC Drives indicate a short circuit, it means there is short-circuiting in the motor or motor wiring. Remove the power to the frequency converter and repair the short circuit.
What does 'Motor mod. changed' mean on Danfoss VLT CANopen MCA 105 DC Drives?
If your Danfoss DC Drives display 'Motor mod. changed', it means the motor selected in parameter 1-11 Motor Model is not correct. Check the motor model.
How do I resolve a control word timeout on Danfoss DC Drives?
A control word timeout on Danfoss DC Drives indicates a lack of communication to the frequency converter. Check connections on the serial communication cable, increase 8-03 Control Word Timeout Time, and check the operation of the communication equipment.
How to troubleshoot a dark or non-functional display on Danfoss VLT CANopen MCA 105 DC Drives?
If your Danfoss DC Drives display is completely dark or has no function, start by checking the input power source. Also, inspect the fuses or circuit breaker and replace if necessary. If the LCP isn't getting power, replace the faulty LCP or connection cable. Ensure there are no shorts on the control voltage terminals and that you're using the correct LCP model. Finally, adjust the contrast or, if the display is still defective, replace it. If the internal voltage supply is faulty, contact your supplier.
Why won't the motor brake with Danfoss VLT CANopen MCA 105 DC Drives?
If the motor will not brake using Danfoss DC Drives, check parameter group 2-0* DC Brake and 3-0* Reference Limits for possible incorrect settings in the brake parameters or ramp down times that are too short.
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