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Sandra MullenAug 30, 2025
How to troubleshoot 10 Volts low on Danfoss DC Drives?
- TTim HerringAug 30, 2025
If the control card voltage is below 10 V from terminal 50, remove some of the load from terminal 50, as the 10 V supply is overloaded.
How to troubleshoot 10 Volts low on Danfoss DC Drives?
If the control card voltage is below 10 V from terminal 50, remove some of the load from terminal 50, as the 10 V supply is overloaded.
What to do if Danfoss DC Drives show control card over temperature?
If the cutout temperature of the control card is exceeded, check that the ambient operating temperature is within limits.
What to do if Danfoss VLT DC Drives report motor phase V missing?
If motor phase V between the frequency converter and the motor is missing, remove power from the frequency converter and check motor phase V.
What does 'AMA check Unom and Inom' mean on Danfoss VLT DC Drives?
If the settings for motor voltage, motor current, and motor power are wrong, check the settings in parameters 1-20 to 1-25.
What to do if Danfoss VLT detect option module configuration has changed?
If one or more options have either been added or removed since the last power down, check that the configuration change is intentional.
What does 'dry pump' mean on Danfoss DC Drives?
If a no-flow condition in the system with the frequency converter operating at high speed indicates a dry pump, troubleshoot the system and reset the frequency converter after the fault has been cleared.
What does 'missing motor' mean on Danfoss DC Drives?
If an under-load condition was detected, inspect the system for proper operation.
How to resolve over current in Danfoss VLT?
If the inverter peak current limit is exceeded, check the load connected to the frequency converter and ensure it is within limits.
What to do if Danfoss DC Drives show earth (ground) fault?
If there is current 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.
How to troubleshoot DC overvoltage in Danfoss VLT DC Drives?
If the intermediate circuit voltage exceeds the limit, connect a brake resistor.
Warning about dangers of high voltage during operation and installation.
General safety instructions for operating the adjustable frequency drive.
Procedures to follow before starting any repair or maintenance work.
Precautions to prevent accidental motor startup during operation or setup.
Information on the Safe Stop function and its compliance with safety categories.
Crucial safety precautions for mechanical installation procedures.
Instructions for connecting the electrical components of the drive.
Information on selecting and using fuses for circuit protection.
Procedure to test motor connection and verify rotation direction.
Steps and methods for programming the drive's various functions.
How alarms and warnings are signaled, their causes, and reset procedures.
Detailed list of fault messages, their meanings, and corrective actions.
General| Frequency | 50/60 Hz |
|---|---|
| Enclosure | IP20, IP21, IP55, IP66 |
| Series | VLT |
| Control Technique | Flux Vector Control |
| Output Voltage | 0-Vinput |
| Control Method | Fieldbus |
| Communication Interface | PROFIBUS, CANopen |
| Protection Features | Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault |
| Cooling Method | Liquid Cooled |
| Storage Temperature | -25°C to +70°C |
| Relative Humidity | 5-95% non-condensing |
| Altitude | Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating |
| Operating Temperature | -10°C to +50°C (14°F to 122°F) |
