Three-Phase Variable Frequency Drive ZEST 4kW 9A HD / 5.5kW 13A ND 400V

ZEST ZQ510T4D three-phase variable frequency drive is a frequency inverter designed for smooth speed control of 400V three-phase motors. It offers two ratings: 4kW / 9A (HD) and 5.5kW / 13A (ND), allowing the drive to be matched to different load characteristics. Vector control, Torque Boost, Speed Tracking and RS485/Modbus communication extend its speed regulation and industrial automation integration capabilities.

Key Advantages of the ZEST ZQ510T4D Variable Frequency Drive

• Two HD/ND ratings – allow the inverter to be selected for drives with different overload capacity requirements.
• Vector control – supports motor control under changing load conditions.
• Torque Boost – supports motor torque at low frequencies.
• Speed Tracking – enables the drive to take control of a motor that is still rotating.
• Adjustable ACC/DEC ramps – provide controlled drive acceleration and deceleration.
• Built-in Brake Unit – allows connection of a suitably selected external braking resistor.
• RS485/Modbus – enables communication with compatible PLC controllers and industrial automation systems.
• Up to 16 preset speeds – allows frequency settings to be stored and selected through configured digital inputs.
• Built-in Simple PLC function – automatically executes speed sequences with specified durations for individual stages, without an additional PLC controller.
• PID controller – automatically adjusts drive operation based on a sensor signal, for example to maintain a specified pressure.
• Motor autotuning – identifies motor parameters to facilitate matching the control settings to the drive.
• JOG operation – enables brief drive operation at a separate speed setting, useful when positioning mechanisms.

Two Ratings – 4kW HD and 5.5kW ND

Heavy Duty (HD) – 4kW / 9A is the rating intended for drives requiring greater overload capacity, such as suitably matched conveyors and mixers.

Normal Duty (ND) – 5.5kW / 13A is intended for drives with less demanding load characteristics, such as suitably matched pumps and fans. Both ratings apply to the same inverter and differ in their permissible loading conditions.

Vector Control and Torque Regulation

Vector control allows motor operation to be adapted to changes in speed and load. The Torque Boost function supports motor torque at low frequencies, making it useful in drives that need to operate at reduced speeds.

Speed Tracking enables the inverter to take control of a motor that is still rotating. This function is useful, among other applications, in fan drives where the impeller may continue rotating after control has been switched off.

Controlled Starting and Braking Functions

Adjustable ACC/DEC ramps allow motor acceleration and deceleration times to be set, helping to reduce sudden mechanical loads. The FWD/REV function allows the drive's direction of rotation to be reversed.

The built-in Brake Unit supports connection of a suitably selected external braking resistor, which dissipates energy returned by the motor during deceleration. The braking resistor must be selected separately according to the drive's operating conditions.

Communication and Functions Supporting Operation

The RS485/Modbus interface enables communication with suitable PLC controllers and integration of the inverter with industrial automation systems. Control can be performed using the operator panel or configured external signals.

Intelligent Fan Control manages operation of the cooling fan. Three Anti-Paint is a protective coating for the electronics, while Power Anomaly Self-Check provides diagnostics for power supply irregularities.

Applications of the ZEST ZQ510T4D Variable Frequency Drive

The 400V three-phase variable frequency drive is suitable for appropriately matched drives used in:

• Lathes, milling machines and other machine tools – motor speed regulation.
• Conveyors – adjusting material conveying speed.
• Mixers – controlling rotational speed under changing loads.
• Pumps and fans – regulating output by changing motor speed.
• Production drives – smooth starting, speed regulation and integration with automation systems.

Technical Specifications

ZEST ZQ510T4D – Speed Regulation and 400V Drive Control

The ZEST ZQ510T4D variable frequency drive combines two ratings, 4kW HD / 5.5kW ND, with vector control, torque regulation functions and RS485/Modbus communication. The inverter enables controlled operation of three-phase motors in workshop and industrial applications.

*The indicated price refers exclusively to the machine and does not include optional/additional equipment, installation, transport, or training; please contact our advisor for more information.