Toshiba VFA5-4220P VFA5 Frequency Inverter Unit

Module Feature

VFA5-4220P is a general-purpose three-phase inverter of Toshiba VFA5 series. It supports V/F control and sensorless vector control for induction motors. It integrates overcurrent, overload, overvoltage, undervoltage, overheat and phase loss protection. It has multi-speed preset, PID process control and analog I/O for closed-loop regulation. It supports Modbus communication for connection with PLC and HMI. Widely stocked as spare for water treatment, HVAC and factory automation control cabinets.

Working principle

Three-phase AC power is rectified to DC bus, and IGBT power module outputs adjustable voltage and frequency to drive the motor. The control board samples current and bus voltage continuously, adjusts PWM output according to speed setpoint. It limits starting current and provides stable torque output. Fault signals can be output via relay contacts and uploaded to upper control system.

Onboard components

Input rectifier assembly, IGBT power module, main control PCB, voltage/current sampling circuit, cooling fan, front operation keypad and metal cabinet housing.

LED indicators

Front LEDs indicate power, run, fault and alarm status.

Hardware self‑diagnosis

Drive monitors heat sink temperature, output current, DC bus voltage and internal circuit status. Parameters can be modified via local keypad.

Programming software

Toshiba inverter configuration software, used for parameter backup, fault record reading and firmware upgrade.

Electrical & Process Parameters

Model: VFA5-4220P Brand: Toshiba Device type: Variable frequency drive Rated power: 22 kW Input voltage: 380 ~ 460 VAC 3-phase Function: Induction motor speed regulation, PID closed-loop control and motor protection

Mechanical & Structure

Mounting: Cabinet panel mounting Protection class: IP20 Housing: Metal chassis with cooling fan

Environmental

Operating temperature: -10℃ ~ +45℃ Storage temperature: -40℃ ~ +85℃ Ambient humidity: 5~95% non‑condensing

Certification: CE, UL Status: Original Toshiba automation spare

Installation

Cut off three-phase main power before replacement. Secure drive on cabinet backplate, connect power cable, motor cable and control signal wiring, input motor nameplate parameters, test speed adjustment and protection function after commissioning.

Interface

3-phase power input terminals, motor output terminals, analog/digital I/O terminals, Modbus communication port, keypad connector.

Diagnostic

Overcurrent fault: Motor short circuit, cable damage or acceleration time too short. Overheat alarm: Fan failure, dust accumulation or poor ventilation. Communication loss: Bus wiring open or wrong station address.

Product Brief

VFA5-4220P inverter, Toshiba VFA5 22kW 380-460V VFD spare for pump, fan and general machinery variable speed control replacement.