What does control word timeout mean on Danfoss D9h DC Drives?
If you're experiencing a control word timeout with your Danfoss DC Drives, it means there is no communication to the frequency converter. To resolve this, check the connections on the serial communication cable, increase parameter 8-03 Control Word Timeout Time, check the operation of the communication equipment, and verify that proper EMC installation was performed.
What to do if brake check failed on Danfoss D9h DC Drives?
If the brake check failed on your Danfoss DC Drives, it means the brake resistor is not connected or not working. Check 2-15 Brake Check.
What to do if there is no safety option on Danfoss DC Drives?
If the safety option was removed without applying a general reset on your Danfoss DC Drives, reconnect the safety option.
How to troubleshoot a motor not reaching maximum speed on Danfoss D9h DC Drives?
If the motor is not reaching its maximum speed using Danfoss DC Drives, program the correct frequency limits. Also, ensure that the reference input signal is scaled correctly by adjusting the settings.
Why is the motor speed unstable in my Danfoss DC Drives?
If the motor speed is unstable in your Danfoss DC Drives, check the settings in parameter group 1-6* Load Depen. Setting. For closed loop operation, check settings in parameter group 20-0* Feedback.
What causes a motor to run rough with Danfoss D9h DC Drives?
If the motor runs rough with Danfoss DC Drives, check the motor settings in parameter groups 1-2* Motor Data, 1-3* Adv Motor Data, and 1-5* Load Indep. Setting to avoid over-magnetisation.
Why won't the motor brake with Danfoss 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.
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 for DC overvoltage on Danfoss DC Drives?
To address DC overvoltage on Danfoss DC Drives, connect a brake resistor and extend the ramp time.
What does '1.8 V supply low' mean on Danfoss D9h DC Drives?
If the 1.8 V DC supply is low on your Danfoss DC Drives, it indicates that the 1.8 V DC supply used on the control card is outside of allowable limits. Check for a defective control card.
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