How do I resolve a control word timeout on Danfoss VLT HVAC Drive FC 102 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.
What causes motor thermistor over temp in Danfoss VLT HVAC Drive FC 102 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.
How to deal with torque limit issues in Danfoss VLT HVAC Drive FC 102 DC Drives?
To manage torque limit issues in Danfoss DC Drives, if the motor torque limit is exceeded during ramp up, extend the ramp up time. If the generator torque limit is exceeded during ramp down, extend the ramp down time. If torque limit occurs while running, possibly increase the torque limit, ensuring the system can operate safely at a higher torque. Also, check the application for excessive current draw on the motor.
How to troubleshoot live zero error on Danfoss VLT HVAC Drive FC 102 DC Drives?
A live zero error in Danfoss DC Drives can be caused by broken wiring or a faulty device sending the signal. Check connections on all the analog input terminals: Control card terminals 53 and 54 for signals, terminal 55 common; MCB 101 terminals 11 and 12 for signals, terminal 10 common; MCB 109 terminals 1, 3, 5 for signals, terminals 2, 4, 6 common. Also, check that the frequency converter programming and switch settings match the analog signal type. Perform Input Terminal Signal Test.
What does a brake chopper fault mean on Danfoss VLT HVAC Drive FC 102?
A brake chopper fault on Danfoss DC Drives means that if a short circuit occurs, the brake function is disabled. Remove power to the frequency converter and remove the brake resistor.
What should I do if my Danfoss DC Drives experience a mains failure?
If your Danfoss DC Drives experience a mains failure, it indicates that the supply voltage to the frequency converter is lost. Check the fuses to the frequency converter and mains power supply to the unit.
What does 'DC link voltage high' mean for Danfoss DC Drives?
The message 'DC link voltage high' for Danfoss DC Drives means that the intermediate circuit voltage (DC) is higher than the high voltage warning limit.
What does 'DC link voltage low' mean for Danfoss VLT HVAC Drive FC 102?
The message 'DC link voltage low' for Danfoss DC Drives means that the intermediate circuit voltage (DC) is lower than the low voltage warning limit.
What causes inrush fault in Danfoss VLT HVAC Drive FC 102?
An inrush fault in Danfoss DC Drives is caused by too many power-ups occurring within a short time period. Let the unit cool to operating temperature.
General| Enclosure | IP20, IP21, IP55 |
|---|---|
| Ambient Temperature Range | -10°C to +40°C |
| Storage Temperature Range | -25°C to +70°C |
| Relative Humidity | 5-95% (non-condensing) |
| Communication Protocols | Modbus RTU, BACnet, Profibus |
| Certifications | CE, UL, cUL |
| Control Principle | PWM |
| Cooling Method | Forced air cooling |
| Input Voltage | 200-240V, 380-480V, 525-600V |
| Control Modes | sensorless vector control, closed loop vector control |
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