What does 'start failed' mean on Danfoss VLT DC Drives?
If the speed has not been able to exceed 1-77 Compressor Start Max Speed during start within the allowed time, inspect the motor for blockages.
How to fix brake resistor short circuit in Danfoss VLT DC Drives?
If a short circuit occurs, the brake function is disabled. Remove power to the frequency converter and replace the brake resistor.
How to resolve a brake chopper fault in Danfoss DC Drives?
If the brake transistor is monitored during operation and if a short circuit occurs, the brake function is disabled, remove power to the frequency converter and remove the brake resistor.
What to do if Danfoss VLT DC Drives show inrush fault?
If too many power-ups have occurred within a short time period, let the unit cool to operating temperature.
How to troubleshoot fieldbus communication fault in Danfoss DC Drives?
If communication between the fieldbus and the communication option card is not operating, check the communication option card connections.
What to do if Danfoss VLT display 1.8 V supply low?
If the 1.8V DC supply used on the control card is outside of allowable limits, check for a defective control card.
What to do if Danfoss DC Drives show speed limit?
When the speed is not within the specified range, check the application to determine the cause.
How to resolve current limit issues in Danfoss VLT?
If the current is higher than the value defined in the current limit setting, ensure that Motor data in parameters 1-20 through 1-25 are set correctly.
What triggers an external interlock on Danfoss VLT?
If an external interlock has commanded the frequency controller to trip, clear the external fault condition.
What to do if Danfoss VLT DC Drives reach output frequency at maximum limit?
If the output frequency has reached the maximum limit set in the configuration, possibly increase the output frequency limit and ensure system safety.
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) |
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