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.
How to troubleshoot a dark display or no function on Danfoss VLT HVAC Drive FC 102 DC Drives?
If the display is dark or there is no function on your Danfoss DC drive, first, check the input power source. Also, inspect fuses or the circuit breaker and follow the recommendations provided. If the LCP has no power, replace the faulty LCP or connection cable. Ensure there isn't a shortcut on the control voltage or at the control terminals, and wire the terminals properly. Use only LCP 101 or LCP 102. Adjust the contrast by pressing [Status] + [?]/[?]. If the display is still defective, replace the LCP or connection cable. For internal voltage supply faults or defective SMPS, contact the supplier.
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.
What to do if Danfoss VLT HVAC Drive FC 102 DC Drives show External error DI2?
If your Danfoss DC drive displays 'External error DI2', this could be caused by a safety input connected to DI2 having an illegal signal level, or the sensor may be broken. To fix this, check that the configuration of DI2 (parameter 42-21 Type, subindex [0]) is set correctly and that the connected sensor is installed according to specification. You might also need to extend the discrepancy time for DI2 using the VLT® Motion Control Tool MCT 10 Safe Plug-in.
What to do if Danfoss VLT HVAC Drive FC 102 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 a brake chopper fault in Danfoss VLT HVAC Drive FC 102 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.
What does a parameter error mean on Danfoss DC Drives?
If your Danfoss DC Drives display a parameter error, it indicates that the parameter is out of range. Set the affected parameter to a valid value.
How to fix a short circuit in Danfoss VLT HVAC Drive FC 102 DC Drives?
If your Danfoss DC Drives indicate a short circuit, it means there is short-circuiting in the motor or motor wiring. Remove the power to the frequency converter and repair the short circuit.
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.
What to do if Danfoss DC Drives show an over current error?
If you are experiencing an over current error with your Danfoss DC Drives, it might be due to shock loading or quick acceleration with high-inertia loads. First, remove the power and check if the motor shaft can be turned. Also, verify that the motor size matches the frequency converter and that the motor data is correctly set in parameters 1-20 to 1-25.
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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