Special Drives

Comprehensive fault protection

A full set of protections covering overvoltage, undervoltage, overcurrent, power module, heatsink over-temperature, motor overload and external faults, for safe and reliable operation.

Complete regenerative drive system

The cabinet carries a regenerative supply unit with every component regenerative operation needs, line-side filter included, and lets energy move freely between motoring and generating modes. The unit returns regenerated energy to the grid as a sine wave with low line-side current harmonics, and since no braking unit or external braking resistor is required, installation is simpler while operation stays more efficient and cleaner.

Rich peripheral interfaces

A broad set of peripheral interfaces covers a wide range of applications.

Multiple fieldbus options

MODBUS as standard and PROFIBUS as an option support multi-drive communication and coordinated control.

PWM dead-time compensation

A new dead-time compensation scheme cuts motor noise and motor losses.

Vector control performance

Strong open-loop and closed-loop vector control noticeably improves system dynamics and stability, and excellent torque control delivers precise torque regulation.

High protection rating

IP55 protection stands up to harsh environments of every kind.

High starting torque

200% of rated torque at start.

Compact construction

A small footprint with an all-metal housing for better durability and heat dissipation.

Fast protective response

Rapid suppression of overcurrent and overvoltage.

Optional power supply

A switching power supply is available as an option.

Fully sealed structure

Waterproof, dust-tight and vibration resistant.

Waterproof cooling fan

A double ball-bearing, high-speed waterproof cooling fan.

Frequency and current display

Frequency and current are shown at the same time, with the panel available as an option or as standard.

Broad motor compatibility

FD500 mounts directly onto the motor and works with around 90% of the motors on the market.

Compact and flexible to install

The modular decentralized design is 30%-50% smaller than a traditional control cabinet and installs right at the equipment, shortening cable runs and lowering wiring costs.

Lower system cost

No separate control cabinet is needed, which reduces equipment investment and suits space-constrained sites such as logistics and automotive lines.

Lower running and maintenance cost

The modular design makes service and part replacement straightforward, and a fault on one unit does not stop the others.

Precise control and better efficiency

Regulating motor speed and frequency independently avoids the energy waste of conventional equipment and saves 10%-20%.

High power factor, fewer harmonics

Multiplexed PWM control keeps the output voltage close to a sine wave, lifts power factor above 0.9 and cuts input harmonics by more than 80%.

Dynamic response

Each unit is controlled independently and adapts quickly to load changes, raising overall system efficiency.

Decentralized architecture

No reliance on a single power source, so a single point of failure does not affect the other units and the system stays reliable.

Easy to scale

The modular design expands freely and fits industrial sites of any size or complexity.

High protection

Up to IP66, suitable for direct outdoor installation.

Easy installation

Control enclosure and drive are integrated, so there is no second installation step.

Easy maintenance

Maintenance-free by design.

Easy operation

Start and stop control plus 7 speed steps on the up and down keys.

Quiet comfort

A carrier frequency of up to 16 kHz keeps running noise low.

Smooth running

Steady operation that delivers a natural airflow.

No tuning required

Synchronous motors run without tuning.

Thorough protection

Up to 33 protection functions covering impact, overcurrent, overvoltage, overload and ground faults.

Simple installation

Control enclosure and drive are integrated, so there is no second installation step.

Broad compatibility

Runs both permanent-magnet synchronous and asynchronous motors.

Easy maintenance

Wear parts are simple to clean and replace.

Complete package

Includes a speed control knob and a main-circuit power circuit breaker.

Quiet comfort

A carrier frequency of up to 16 kHz keeps running noise low.

Smooth running

Steady operation that delivers a natural airflow.

No tuning required

Synchronous motors run without tuning.

Thorough protection

Up to 33 protection functions covering impact, overcurrent, overvoltage, overload and ground faults.

Highly flexible

One unit for many duties; a parameter change switches between synchronous and asynchronous motor control.

Centralized control

An optional radio module enables centralized control over a wireless link.

VVC control algorithm

A new VVC algorithm for permanent-magnet synchronous motors delivers precise control with no tuning.

Overload protection

A proprietary current-limiting algorithm keeps the motor within its current rating and prevents demagnetization caused by overload heating.

Impact protection

If a blade is struck, the drive can stop and block its output within 100 ms.

4G IoT card

Enables IoT control, start and stop, speed setting and status monitoring.

Wide speed range

Smooth speed control across 0-50 Hz and higher, matching fan speed to the real-time cooling demand of the refrigeration system, such as changes in condensing or ambient temperature.

Soft start and soft stop

Speed ramps up from zero with a starting current only 1-2 times rated, avoiding the inrush of a fixed-speed fan jumping straight to full speed.

No more oversized fans

A fixed-speed fan delivers one airflow, so the design airflow usually far exceeds what is actually needed and the surplus becomes wasted energy. By matching airflow dynamically, the drive saves 20%-60%.

Wide temperature range and corrosion resistance

Operating temperature extends from -10 to 60 degrees C, with a heating module that engages in the cold, and the PCB carries a UV conformal coating against humidity and salt spray.

Remote control

RS485, Modbus and other protocols connect the board to PLC, SCADA or IoT platforms for remote speed setting and status monitoring.

Works with most fan types

Supports axial, centrifugal and Roots type fans, with asynchronous or permanent-magnet synchronous motors.

No need to replace the fan

A direct replacement for traditional fixed-speed control such as contactors and relays; a retrofit only needs the motor and control wiring connected, which keeps installation simple.

Local control

Manual speed adjustment from the panel knob and keys.