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Rebecca RobinsonSep 3, 2025
What causes a heatsink temperature alarm on Danfoss vlt FC 102 DC Drives?
- LLisa SpearsSep 3, 2025
The maximum temperature of the heatsink has been exceeded. Check if the ambient temperature is too high.
What causes a heatsink temperature alarm on Danfoss vlt FC 102 DC Drives?
The maximum temperature of the heatsink has been exceeded. Check if the ambient temperature is too high.
What causes an internal fan fault warning on Danfoss vlt FC 102 DC Drives?
The fan warning function is an extra protective function that checks if the fan is running/mounted. Check for proper fan operation.
How do I fix a '10 Volts low' warning on Danfoss DC Drives?
A short circuit in a connected potentiometer or improper wiring of the potentiometer can cause this condition. Remove the wiring from terminal 50. If the warning clears, the problem is with the wiring. If the warning does not clear, replace the control card.
What causes a live zero error warning/alarm on Danfoss DC Drives?
Broken wiring or a faulty device sending the signal can cause this condition. Check connections on all the analog input terminals, specifically control card terminals 53 and 54 for common.
What does a control word timeout warning/alarm mean on Danfoss vlt FC 102?
There is no communication to the frequency converter. Check connections on the serial communication cable.
Why is the stop delayed warning appearing on my Danfoss DC Drives?
Stopping the motor has been delayed due to short cycle protection. Troubleshoot the system and reset the adjustable frequency drive after the fault has been cleared.
What causes a low DC link voltage warning on Danfoss DC Drives?
The intermediate circuit voltage (DC) is lower than the low voltage warning limit. Check that the supply voltage matches the frequency converter voltage.
What does a DC under voltage warning/alarm mean on Danfoss vlt FC 102 DC Drives?
The intermediate circuit voltage (DC link) drops below the undervoltage limit, the frequency converter checks if a 24 V DC back-up supply is connected. Check that the supply voltage matches the frequency converter voltage.
Why is the DC link voltage high on my Danfoss vlt FC 102 and what should I do?
The intermediate circuit voltage (DC) is higher than the high voltage warning limit. Connect a brake resistor.
What to do if my Danfoss vlt FC 102 show a DC overvoltage warning/alarm?
If the intermediate circuit voltage exceeds the limit, the Danfoss DC Drives will trip after a time. To resolve this, connect a brake resistor.
General| Category | DC Drives |
|---|---|
| Model | Danfoss VLT FC 102 |
| Output voltage range | 0 to rated motor voltage |
| Power range | 0.37 kW to 200 kW |
| Communication interfaces | RS-485 |
| Protection features | Overvoltage, undervoltage, overcurrent, short circuit, earth fault, overtemperature, motor thermal protection |
| Cooling method | Air-cooled |
| Enclosure rating | IP20, IP21, IP55 (depending on model) |
| Approvals | CE, UL, cUL |
