V&T V9 450kw High Precision Strong Torque Low Voltage Control VFD

Basic Information

Model NO.

V9-H-4T450G/500L

Principle

Vector Control Transducer

Switch Mode

PWM Control

Circuit Type

Voltage Source

Application

Low Voltage Variable-Frequency Drive

Transformation

AC-DC-AC

Function

General Purpose, Elevator, Textile, Constant Torque

Origin

China

Product Overview

V9 Series General Purpose Inverter

Easy Control / Friendly Interface / Multifunction Operation

The V9−H Series is a high-performance vector and torque-controlled inverter. It covers a voltage range of 220V and 380V, with a power range from 0.75kW to 630kW. It is designed to drive both synchronous and asynchronous motors through various control modes including open-loop, closed-loop, and V/F control.

Key Features

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Multiple System Loop Control: Supports Position loop, Speed loop, and Torque loop for precise movement.

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Flexible Speed Commands: Options include Modbus, Keyboard, Analog, Multi-segment, Terminal UP/DN, and Process PID.

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Advanced Operation Panels: Choice of LED or LCD panels with parameter copy functions and remote control up to 500m.

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Communication: Standard RS485 interface with Modbus-RTU protocol for easy upper computer integration.

Product Display

Technical Specifications

Control Characteristics		Sensor-less Vector Control	Sensor Vector Control
Motor Type	Synchronous motor, Asynchronous motor
Maximum Speed	600Hz (Customizable for higher frequency)
Starting Torque	Asynchronous: 200% at 0.25Hz	Synchronous: 150% at 1.5% speed	200% at 0 speed
Speed Range	1:200	1:5000
Torque Precision	±5%	±3%
Protection Level	IP20

Terminal Wiring Diagram

Terminal	Symbol	Function Description	Technical Specifications
Modbus	485+ / 485-	RS485 Communication	Baud rate up to 57600bps; supports 32 units in parallel.
Digital Inputs	X1...X7	Multi-function Inputs	24VDC ± 20%, 5mA
Analog Inputs	AI1 / AI2 / AI3	Voltage/Current Inputs	-10V...+10V or 0...20mA; 12-bit resolution.
Relay Outputs	RA/RB/RC	Fault/Running Signal	250VAC/1A, 30VDC/1A

Dimensions & Mounting

Frequently Asked Questions

What is the power range of the V9 series inverters?

The V9-H series supports a wide power range from 0.75kW up to 630kW, suitable for both light and heavy-duty applications.

Can this inverter control synchronous motors?

Yes, the V9 series is compatible with both synchronous and asynchronous motors using various control modes.

Does the V9 series support remote operation?

Yes, the operation panel can be used as a remote control box connected via a standard network cable for distances up to 500 meters.

What communication protocols are integrated?

It features built-in Modbus-RTU communication as standard. Optional support for CANopen, PROFIBUS-DP, and PROFINET is also available.

How is the cooling handled for high-power units?

While very low power units may use self-cooling, the majority of the V9 series utilizes forced air cooling with an independent air duct design for better heat dissipation.

Is there protection against voltage fluctuations?

Yes, the drive includes comprehensive protection for power supply under-voltage, over-voltage, over-current, and phase imbalance.