TOSHIBA TOSBERT VF-AS3 series

TOSHIBA TOSBERT VF-AS3 series

Product Overview

The Toshiba TOSBERT VF-AS3 series is a high-performance frequency converter designed for industrial scenarios, with a core positioning of precise control of 3-phase motor speed. It is specifically designed for 3-phase induction motors, built-in permanent magnet synchronous motors (IPMSM), and surface permanent magnet synchronous motors (SPMSM) in the general industrial field, and does not support single-phase motor drive. This series, with its wide voltage coverage, dual rated mode adaptation, comprehensive safety protection, and multi protocol communication capabilities, has become the core speed control component of equipment such as conveyors, pumps, fans, cranes, and machine tools.

The product strictly limits its application boundaries and cannot be used in scenarios that have a significant impact on public safety or require special quality control, such as power plants, railways, nuclear power, aerospace, life support, surgical equipment, etc. It is only suitable for motor speed regulation needs in general industrial production. The model naming follows a unified rule, for example, in "VFAS3-6750PC", "VFAS3" is the series identifier, "6" represents the voltage level covering 500V-690V, "750" corresponds to the core capacity code, "P" represents the equipped operation panel, and "C" represents the built-in EMC filter.

Core specifications and performance parameters

（1） Voltage and power coverage range

This series is divided into three categories based on voltage levels, each supporting HD (Heavy Duty, constant torque) and ND (Normal Duty, variable torque) rated modes, adapted to different load characteristics:

Voltage level HD rated mode (constant torque) ND rated mode (variable torque) Capacity labeling Unit Core model example

500V class 1.5kW - 55kW 2.2kW - 75kW kW VFAS3-6022PC（1.5kW）、VFAS3-6750PC（55kW）

600V(575V) class 2HP - 75HP 3HP - 100HP HP VFAS3-6022PC（2HP）、VFAS3-6750PC（75HP）

690V class 2.2kW - 75kW 3kW - 90kW kW VFAS3-6022PC（2.2kW）、VFAS3-6750PC（75kW）

（2） Key performance indicators

1. Control core parameters

Control method: Adopting sine wave PWM control, the output waveform is stable, reducing motor operating losses

Output frequency: Set range from 0.01Hz to 590Hz, default operating range from 0.01Hz to 60Hz, meeting the requirements of low-speed precise control and high-speed operation

Frequency accuracy: ± 0.01% ± 0.022Hz in digital input mode, ± 0.2% in analog input mode (25 ± 10 ℃ environment), industry-leading control accuracy

Frequency resolution: Input 0.1Hz on the operation panel, 0.01Hz for communication commands, and 1/2000 of the highest frequency for analog input (0.03Hz at 60Hz)

Carrier frequency: A1Y base (small capacity model) 1.0kHz -6.0kHz, A2Y base (large capacity model) 1.0kHz -4.9kHz, both default to 2.5kHz, adjustable according to noise and heat dissipation requirements

2. Overload and operational capacity

HD rated mode: 150% overload for 60 seconds, suitable for constant torque loads (such as conveyors, cranes, compressors)

ND rated mode: 120% overload for 60 seconds, suitable for variable torque loads (such as fans, pumps, blowers)

Acceleration/deceleration time: adjustable from 0.01 seconds to 6000 seconds, supporting 4 sets of acceleration/deceleration curve switching, including S-shaped acceleration/deceleration mode to avoid load impact

3. Physical and environmental parameters

Machine base specifications: divided into two categories: A1Y (VFAS3-6022PC~6220PC) and A2Y (VFAS3-6300PC~6750PC), with a weight range of 21.6kg to 57kg

Protection level: IP00 (IEC60529 standard), shell color RAL7016 (dark gray)

Cooling method: forced air cooling, built-in cooling fan designed for a lifespan of 8 years, requiring regular inspection and maintenance

Environmental adaptability:

Working temperature: -15 ℃~+60 ℃ (when the ambient temperature is greater than 50 ℃, it needs to be operated at reduced capacity)

Relative humidity: 5% -95% (without condensation)

Working altitude: ≤ 2000m (when exceeding 1000m, the rated current will decrease by 1% for every 100m increase)

Anti vibration: ≤ 5.9m/s ² (0.6G), frequency range 10Hz-55Hz

Detailed explanation of core functions and configurations

（1） Control mode and operational functions

1. Diversified control modes

V/f control: supports constant V/f, variable torque V/f, automatic torque boosting, 5-point arbitrary V/f curve setting, adapted to different motor characteristics

Advanced control: Built in vector control, PID control, torque control, supporting torque limitation and torque command input (-10V~+10Vdc)

Special functions: light load high-speed operation (improves motor efficiency under light load), droop function (load balancing when multiple inverters drive the same load), frequency jump (can set 3 jump frequencies to avoid resonance)

2. Run operational functions

Basic operation: forward and reverse control, jog operation (panel or terminal control), coast stop and emergency stop control

Preset speed: 31 preset speeds can be switched through a combination of 5 terminals, supporting quick switching between different working conditions

Automatic functions: automatic acceleration and deceleration, automatic torque increase, regenerative energy suppression control, reducing the difficulty of manual debugging

Fault handling: Supports 10 automatic retry functions, with an adjustable retry waiting time of 0-10 seconds, and fault records can be retained

（2） Interface and Communication System

1. Digital interface

Digital input: 14 programmable terminals (including 6 optional extensions), supporting 204 function assignments, compatible with positive/negative logic, compliant with IEC61131-2 logic type 1

Digital output: 3 programmable terminals (including 2 optional extensions), output capacity 24Vdc/50mA, supporting 262 function assignments

Pulse interface: The digital input terminal [S4] [S5] can receive pulse frequency signals (up to 30kbps), and the digital output terminal [FP] can output pulse signals (up to 30kbps, with a duty cycle of 50%)

2. Simulation interface

Analog input: 5 frequency command inputs (including 2 optional extensions), supporting signal types such as 0~10V, -10V~+10V, 4~20mA, etc. The input impedances are 31.5k Ω (voltage signal) and 250 Ω (current signal), respectively

Analog output: 2 programmable terminals, supporting 0~10V, 0~20mA, 4~20mA outputs, can allocate 54 monitoring parameters (such as frequency, current, voltage)

3. Communication capability

Built in interface:

Ethernet (dual port with switch): Supports EtherNet/IP, Modbus TCP, Webserver, enabling remote monitoring and control

RS485 (2 channels): Supports Toshiba inverter specific protocol Modbus RTU， Adapt to industrial bus networking

Optional extension protocols: PROFINET, DeviceNet, PROFIBUS DP, EtherCAT, CANopen, compatible with mainstream industrial control systems

（3） Security and protection functions

1. Core security design

Safe Torque Off (STO): Compliant with IEC61800-5-2 standard, cutting off the motor torque output does not affect the power supply of the control circuit, ensuring the safety of personnel and equipment

Insulation protection: Built in grounding detection function to avoid the risk of electric shock caused by poor grounding

Operation safety: It is forbidden to disassemble the front cover during operation. When disassembling the front cover and front small cover, the power must be turned off and the capacitor discharge must be confirmed to be completed

2. Comprehensive protection function

Specific functions of protection types

Electrical protection for overcurrent, overvoltage, undervoltage, short circuit (load side), ground fault (load side), input phase loss, output phase loss

Thermal protection for frequency converter overload, motor overload (electronic thermal protection), brake resistor overload, and frequency converter overheating

Mechanical protection stall prevention (during operation/acceleration), over torque protection

Other protective power sources include instantaneous power outages (≥ 15ms), EEPROM failures, RAM failures, and communication errors

Installation and wiring specifications

（1） Installation requirements

1. Installation foundation and space

Installation carrier: It must be fixed on a metal plate and used to assist in heat dissipation. It is prohibited to install it on flammable materials or non-metallic surfaces

Installation space:

Single installation: Reserve ≥ 10cm vertically and ≥ 5cm horizontally

Multiple parallel installations: distance between adjacent inverters ≥ 11mm to avoid hot air backflow

Environmental requirements: Install indoors, away from direct sunlight, corrosive gases, oil mist, metal dust, and avoid locations with severe vibrations

2. Handling and fixing

Transportation specifications: Models weighing ≤ 20kg can be transported by a single person, while models weighing ＞ 20kg require cooperation from two people; VFAS3-6300PC~6750PC (A2Y machine base) needs to be transported by a crane and lifted through the top lifting hole. It is forbidden to grip the front cover or wiring hole during transportation

Fixing method: M5 (A1Y machine base) or M8 (A2Y machine base) screws are used for fixing, with tightening torques of 2.6N · m and 11.8N · m respectively, to ensure a firm installation

（2） Wiring specifications

1. Preparation before wiring

Power off requirement: Before wiring, all input power must be cut off, wait for at least 15 minutes, confirm that the charging light is off, and use a tester with a range of 1400Vdc or above to test the DC main circuit (between PA/+and PC/-) voltage to ensure it is ≤ 45V before operation

Personnel qualifications: Wiring work must be completed by electricians with professional qualifications to avoid accidents caused by incorrect wiring

2. Core wiring requirements

Power wiring: Connect the 3-phase power supply to the [R/L1], [S/L2], and [T/L3] terminals, and the voltage fluctuation should be within the range of -15% to+10% of the rated voltage (± 10% when operating at full load)

Motor wiring: Connect the 3-phase winding of the motor to the [U/T1], [V/T2], and [W/T3] terminals, and ensure that the phase sequence is correct to avoid motor reversal; It is strictly prohibited to directly connect the power supply to the output terminal

Grounding Wiring: The grounding wire must be connected to the [PE] terminal, with specifications not lower than the input/output wire, using a separate grounding method. It is prohibited to share the grounding terminal with the chassis screws or other equipment. The grounding resistance must comply with local electrical standards

Braking resistor wiring: It can only be connected to the [PA/+] and [PB] terminals, and is strictly prohibited from being connected between [PA/+] and [PC/-] to avoid short circuits and fires

Control wire wiring: Shielded wire (cross-sectional area ≥ 0.75mm ²) should be used for the control wire, which should be wired separately from the power wire (spacing ≥ 10cm) to avoid electromagnetic interference; The tightening torque of the terminal screw should comply with the specifications (control terminal about 1.2N · m)

3. Peripheral device configuration

Must be configured:

Short circuit protection device: Molded case circuit breaker (MCCB) or earth leakage circuit breaker (ELCB), installed on the input side of the inverter

Emergency stop device: It needs to be linked with the system and can be stopped by cutting off the power or controlling the signal

Recommended configuration:

Thermal relay (THR): When multiple motors share one inverter, each motor needs to be configured separately

Input reactor: suppresses harmonic interference and improves power factor on the power supply side

Surge absorber: The magnetic contactor (MC) coil side needs to be installed to avoid damage to components caused by surge voltage

Parameter Setting and Operation Guide

（1） Core parameter configuration

1. Basic parameters

Multiple Rating Selection (AUL): The default setting is 600V (575V) HD mode, which can be used to switch voltage levels and rated modes (such as 14=500V ND, 17=690V HD)

Command Selection (CMOd): Terminal control, panel control, Ethernet control, RS485 control, etc. can be selected

Frequency Command Selection (FMOd): Analog input, panel touch wheel, communication command, pulse input, etc. can be selected

Acceleration/deceleration time (ACC/DEC): default 10.0 seconds, adjustable according to load characteristics to avoid start/stop impact

2. Protect parameters

Motor overload protection current (tHrA): set according to the rated current of the motor, with a default value of random capacity variation

Stall prevention level (F601/F185): The default value should be higher than the motor no-load current to avoid frequent triggering of stall protection

Overheating protection: Built in temperature sensor, detects the internal temperature of the inverter, automatically reduces capacity or shuts down when overheating occurs

3. Regional adaptation parameters

Regional settings: Supports parameter presets for 5 regions including Japan, North America, Asia, Europe, and China, covering adaptation values such as frequency and voltage

Basic frequency voltage (vLv/F171, etc.): Different voltage levels correspond to different preset values (e.g. 500V class is 500V, 690V class is 690V)

（2） Operation panel usage

Display function: LCD/LED display screen can display output frequency, current, voltage, torque, fault codes, parameter values, etc., supporting multilingual switching

Monitoring function: It can monitor more than 20 operating parameters in real time, including cumulative operating time, motor overload coefficient, and fault history (including recent multiple fault records)

Parameter operation: supports parameter upload/download, user default parameter saving, parameter reset to factory settings, and can be locked with a password to prevent accidental operation

Applicable scenarios and application value

（1） Core applicable scenarios

Constant torque load scenarios: conveyors, cranes, mixers, compressors, machine tools, etc., adapted to HD rated mode

Variable torque load scenarios: centrifugal fans, centrifugal pumps, blowers, etc., adapted to ND rated mode, with significant energy-saving effects

Precise control scenario: equipment that requires stable speed and precise torque control (such as precision machine tools and packaging machinery)

Distributed control scenario: supports multi protocol communication, can be connected to factory MES system and SCADA system, suitable for automated production lines

（2） Core application value

Strong adaptability: wide voltage and power coverage, dual rated mode switching, compatible with multiple motor types, meeting the needs of different industrial scenarios

Precise control: high frequency accuracy and resolution, multiple control modes to choose from, ensuring equipment stability and product quality

Safe and reliable: With comprehensive safety protection functions and STO safety design, it reduces equipment failures and personnel safety risks

Convenient operation and maintenance: rich monitoring functions, fault recording, and parameter locking, simplifying debugging and maintenance processes

Energy saving and efficient: Reduce load idle losses through precise speed regulation, especially suitable for fan and pump loads, with an energy-saving rate of up to 20%~50%

Precautions and usage restrictions

Power compatibility: cannot be connected to the corner grounding system power supply, the IT system power supply needs to disconnect the grounding capacitor; The power supply voltage must strictly match the rated voltage of the model

Environmental restrictions: It is prohibited to use in environments with flammable, explosive, corrosive gases, and excessive dust to avoid equipment damage or safety accidents

Wiring taboos: It is strictly prohibited to connect the power supply to the output terminal, connect the brake resistor to the wrong terminal, or mix the control line and power line, otherwise it may cause the inverter to burn out or be electrocuted

Operation taboo: Do not control the start and stop of the inverter through the on/off of the input side magnetic contactor. Frequent operation may damage the capacitor and switching elements

Disposal requirements: When disposing of the inverter, it should be treated according to local environmental standards, especially paying attention to the environmentally friendly disposal of built-in capacitors and cooling fans, to avoid polluting the environment