How to fix earth fault in Danfoss D9h?
An earth fault in Danfoss DC Drives indicates current leakage from the output phases to earth, either in the cable between the frequency converter and the motor or in the motor itself. Remove power to the frequency converter and repair the earth fault. You can also check for earth faults in the motor by measuring the resistance to ground of the motor leads and the motor with a megohmmeter.
What causes short circuit in Danfoss D9h DC Drives and how to fix it?
A short circuit in Danfoss DC Drives is caused by short-circuiting in the motor or motor wiring. To resolve this, remove power to the frequency converter and repair the short circuit.
Why am I getting a mains phase loss error on my Danfoss DC Drives?
A mains phase loss error on your Danfoss DC Drives indicates that a phase is missing on the supply side, or the mains voltage imbalance is too high. Check the supply voltage and supply currents to the frequency converter.
What causes overload of digital output Terminal 27 in Danfoss DC Drives?
Overload of digital output Terminal 27 is caused by the load connected to terminal 27 or remove short-circuit connection. Check 5-00 Digital I/O Mode and 5-01 Terminal 27 Mode.
What causes overload of digital output Terminal 29 in Danfoss D9h?
Overload of digital output Terminal 29 is caused by the load connected to terminal 29 or remove short-circuit connection. Check 5-00 Digital I/O Mode and 5-02 Terminal 29 Mode.
What to do if option configuration has changed in Danfoss DC Drives?
If the option configuration has changed in Danfoss DC Drives, it means one or more options have either been added or removed since the last power-down. Check that the configuration change is intentional and reset the unit.
How to troubleshoot heatsink temperature issues in Danfoss DC Drives?
If you're experiencing heatsink temperature issues with your Danfoss DC Drives, it means the maximum temperature of the heatsink has been exceeded. Check for conditions such as: * Ambient temperature being too high. * Motor cable being too long. * Incorrect airflow clearance above and below the frequency converter. * Blocked airflow around the frequency converter. * Damaged heatsink fan. * Dirty heatsink.
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.
How do I resolve a control word timeout on Danfoss D9h?
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.
What causes motor thermistor over temp in Danfoss DC Drives?
A motor thermistor over temp error in Danfoss DC Drives can be caused by several factors. Check for motor overheating and if the motor is mechanically overloaded. When using terminal 53 or 54, check that the thermistor is connected correctly between either terminal 53 or 54 (analog voltage input) and terminal 50 (+10 V supply). Also check that the terminal switch for 53 or 54 is set for voltage. When using digital inputs 18 or 19, check that the thermistor is connected correctly between either terminal 18 or 19 (digital input PNP only) and terminal 50. Check 1-93 Thermistor Source selects terminal 18 or 19.
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