Vaidnor VDF730 Series User Manual (English)

Questions and Answers:

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braunhelenSep 6, 2025
What causes fast current limit timeout on Vaidnor VDF730?
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  Jessica DelgadoSep 6, 2025
  If your Vaidnor DC drive is experiencing a fast current limit timeout, it could be because the acceleration/deceleration time is too short, so increase the acceleration/deceleration time. Manual torque boost or V/F curve might not be appropriate, so adjust the manual torque boost or V/F curve. The startup operation might be performed on the rotating motor, so use rotational speed tracking startup or perform startup after the motor stops. The load might be too heavy, so use an AC drive of a higher power class.
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Beth PotterSep 5, 2025
How to fix communication fault in Vaidnor VDF730 DC Drives?
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  Robert GreenSep 5, 2025
  If your Vaidnor DC drive is experiencing a communication fault, it could be due to the host computer being in an abnormal state, so check the cabling of the host computer. The communication cable might be faulty, so check the communication cabling. The communication parameters in group FA might be set improperly, so set the communication extension card type correctly. Also, set the communication parameters properly.
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Caitlin ScottSep 4, 2025
What to do if Vaidnor VDF730 shows external equipment fault?
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  Carlos SmithSep 4, 2025
  If your Vaidnor DC drive reports an external equipment fault, it could be due to an external fault signal being input via DI, so perform the reset operation. Alternatively, an external fault signal might be input via virtual I/O, so eliminate external faults.
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Rita VanceAug 23, 2025
How to fix overcurrent during acceleration in Vaidnor DC Drives?
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  wilsonthomasAug 23, 2025
  If your Vaidnor DC drive is experiencing overcurrent during acceleration, it could be due to several reasons. First, the output circuit might be grounded or short-circuited, so you should eliminate any external faults. Second, the acceleration time may be too short; try increasing it. Third, the manual torque boost or V/F curve might not be appropriate, so you should adjust them. Fourth, the voltage could be too low, so adjust it to the normal range. Fifth, if you're starting the motor while it's rotating, select rotational speed tracking restart or wait until the motor stops before starting. Sixth, a sudden load might be added during acceleration, so remove it. Finally, the AC drive model might be too small, so select a higher power class AC drive.
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Patty BrownSep 2, 2025
What causes power output phase loss in Vaidnor DC Drives?
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  sriceSep 2, 2025
  If your Vaidnor DC drive has a power output phase loss, it could be due to a faulty cable connecting the AC drive and the motor, so eliminate external faults. The AC drive's three-phase outputs might be unbalanced when the motor is running, so check whether the motor three-phase winding is normal. The drive board might be faulty, so contact the agent or vendor.
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kevindavisSep 1, 2025
What to do for power input phase loss in Vaidnor DC Drives?
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  mossmeganSep 1, 2025
  If your Vaidnor DC drive has a power input phase loss, it could be due to the three-phase power input being abnormal, so eliminate external faults. The drive board might be faulty, so contact the agent or vendor.
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Mary ClarkAug 31, 2025
What causes module overheat in Vaidnor VDF730 DC Drives?
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  Tara NolanAug 31, 2025
  If your Vaidnor DC drive reports a module overheat, it could be due to several reasons. The ambient temperature might be too high, so lower the ambient temperature. The air filter might be blocked, so clean the air filter. The fan might be damaged, so replace the damaged fan. The thermally sensitive resistor of the module might be damaged, so replace the damaged thermally sensitive resistor. The inverter module might be damaged, so replace the inverter module.
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Courtney MendozaAug 30, 2025
Why is Vaidnor VDF730 showing overvoltage at constant speed?
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  Norman CameronAug 31, 2025
  If your Vaidnor DC drive is showing overvoltage at constant speed, it could be due to the input voltage being too high, so adjust the voltage to the normal range. Alternatively, an external force might be driving the motor during deceleration, so cancel the external force or install the braking resistor.
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Joshua BryantAug 30, 2025
What causes motor overload in Vaidnor VDF730?
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  Alexander MooreAug 30, 2025
  If your Vaidnor DC drive is experiencing a motor overload, it could be because PB-01 is set improperly, so set PB-01 correctly. The load might be too heavy, or locked-rotor might be occurring on the motor, so reduce the load and check the motor and mechanical conditions. The AC drive model might be of too small power class, so select an AC drive of a larger power class.
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jacob56Aug 29, 2025
How to troubleshoot overcurrent at constant speed in Vaidnor VDF730?
- K
  kbutlerAug 29, 2025
  If your Vaidnor DC drive is showing overcurrent at constant speed, it could be due to a few reasons. The output circuit might be grounded or short-circuited, so you should eliminate external faults. A sudden load might be added during operation, so remove the added load. The AC drive model might be of too small power class, so select an AC drive of higher power class.

Vaidnor VDF730 Series Specifications

General

Brand	Vaidnor
Model	VDF730 Series
Category	DC Drives
Language	English

Summary

Safety Information and Precautions

Safety Information

Covers safety grades and precautions for different stages of use: before installation, during installation, wiring, and after power-on.

Mechanical and Electrical Installation

Mechanical Installation

Covers installation environment requirements and clearance specifications for proper mechanical setup of the AC drive.

Electrical Installation

Details the selection of peripheral electrical devices, description of devices, wiring methods, terminal layouts, and main circuit terminal descriptions.