How to fix brake resistor short circuit in Danfoss D9h?
If your Danfoss DC Drives are reporting a brake resistor short circuit, the brake resistor is being monitored during operation. Remove the power to the frequency converter and replace the brake resistor.
What does 'Motor mod. changed' mean on Danfoss D9h 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.
What does 'Ext. supply' mean on Danfoss D9h DC Drives?
If your Danfoss DC Drives display an 'Ext. supply' error, it means the VLT[®] Extended Relay Option MCB 113 is mounted without external 24 V DC. Either connect a 24 V DC external supply or specify that no external supply is used via parameter 14-80 Option Supplied by External 24VDC.
How to troubleshoot a live zero error on Danfoss DC Drives?
If you're encountering a live zero error with your Danfoss DC Drives, it could be due to broken wiring or a faulty device sending the signal. Check connections on all analog mains terminals.
What to do if control card voltage is less than 10 V in Danfoss DC Drives?
If the control card voltage is less than 10 V in your Danfoss DC Drives, remove some of the load from terminal 50, as the 10 V supply is overloaded. The maximum load should be 15 mA or a minimum of 590 ?.
What does it mean if the brake check failed on Danfoss D9h?
If the brake check failed on your Danfoss DC Drives, it means the brake resistor is not connected or not working. Check parameter 2-15 Brake Check.
What to do if motor phase U is missing in Danfoss D9h DC Drives?
If your Danfoss DC Drives report that motor phase U is missing, remove the power from the frequency converter and check motor phase U.
What to do if motor phase V is missing in Danfoss DC Drives?
If your Danfoss DC Drives report that motor phase V is missing, remove the power from the frequency converter and check motor phase V.
What to do if motor phase W is missing in Danfoss D9h?
If your Danfoss DC Drives report that motor phase W is missing, remove the power from the frequency converter and check motor phase W.
What to do if Danfoss D9h DC Drives show over current?
If your Danfoss DC drive shows an over current error, it means the inverter peak current limit (approximately 200% of the rated current) is exceeded. You should remove power and check if the motor shaft can be turned. Also, check that the motor size matches the frequency converter and verify parameters 1-20 through 1-25 for correct motor data.
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