What causes line power current imbalance greater than 3% in Danfoss D9h?
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.
What does parameter error mean on Danfoss D9h?
If your Danfoss DC Drives displays a parameter error, it means the parameter is out of range.
What causes 10 Volts low error in Danfoss D9h?
A '10 Volts low' error in Danfoss DC Drives can be caused by a short in a connected potentiometer or improper wiring of the potentiometer. Remove the wiring from terminal 50. If the warning clears, the problem is with the customer wiring. If the warning does not clear, replace the control card.
What to do if Danfoss DC Drives show an earth fault?
If your Danfoss DC Drives indicates an earth fault, it means there's current leaking from the output phases to ground, either in the cable between the frequency converter and the motor, or within the motor itself. The solution is to remove power to the frequency converter and repair the earth fault.
What to do for option detection issues in Danfoss D9h DC Drives?
If your Danfoss DC Drives detects a change in the option layout, enable option layout changes to apply the change.
What to do if Danfoss D9h show External error DI1?
If your Danfoss DC drive is showing 'External error DI1', it could be due to a safety input connected to DI1 having an illegal signal level, or the sensor might be broken. You can resolve this by checking that the configuration of DI1 (parameter 42-21 Type, sub-index [0]) is set correctly and that the connected sensor is installed according to specification. Additionally, you can extend the discrepancy time for DI1 using the VLT® Motion Control Tool MCT 10 Safe Plug-in.
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.
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.
What to do for a brake chopper fault in Danfoss D9h DC Drives?
If your Danfoss DC Drives reports a brake chopper fault, and a short circuit occurs, the brake function is disabled. Remove power to the frequency converter and remove the brake resistor.
Why Danfoss DC Drives power on with red light?
If your Danfoss DC Drives show 'Power On' and the indicator is red, this typically indicates an IP Address Conflict. Resolve the IP conflict.
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