VFAS3-4750PC Toshiba 100 HP High-Performance Drive

The Toshiba VFAS3-4750PC is a high-performance AC drive from the advanced AS3 series, engineered for demanding industrial applications. This 100 HP, 460V AC drive offers superior control flexibility with V/Hz, Flux Vector Control (FOC), and torque modes. With integrated safety and communication features, it provides a powerful and scalable solution for complex motor control.

Core Technical Specifications

• Brand & Model: Toshiba VFAS3-4750PC
• Series: AS3 Series High-Performance Drive
• Rated Power: 100 HP
• Supply Voltage: 3-Phase, 460 VAC Input & Output
• Current Rating: 145 A (Constant Torque), 173 A (Variable Torque)
• Frame Size: A5
• Enclosure: UL Type 1 / IP20 for versatile mounting.

Advanced Control & Performance

• Control Modes: V/Hz, Sensorless Flux Vector Control (FOC), Encoderless/Encoder Torque Control.
• Frequency Range: Wide output from 0.1 Hz to 590 Hz.
• Carrier Frequency: Adjustable from 1 to 8 kHz for optimized motor performance.
• Dynamic Braking: Integrated for effective braking of high-inertia loads.
• Safe Torque Off (STO): Integrated safety function compliant with safety standards.

Communication & Connectivity

• Network Ports: (2) 10/100 Mbps Ethernet (RJ45) and (1) RS-485 (RJ45).
• Protocols: EtherNet/IP, Modbus TCP, Modbus RTU, built-in web server (HTTP).
• Expansion: Optional cards for EtherCAT, encoder feedback, and additional I/O.

I/O & Signal Handling

• Analog Inputs: 3 channels (4-20 mA, ±10 VDC).
• Analog Outputs: 2 channels (0-20 mA, 0-10 VDC).
• Digital Inputs: 8 points, 24 VDC sinking/sourcing.
• Digital Outputs: 3 relay outputs (1 Form C, 2 Form A).
• Integrated Features: Built-in DC reactor and EMC filter.

Physical & Environmental Data

• Operating Temperature: -15°C to +50°C (5°F to 122°F).
• Mounting: Panel or wall mount.
• Motor Compatibility: 3-phase induction and permanent magnet AC motors.
• Certifications: UL Listed, CSA, CE, RoHS compliant.

Frequently Asked Questions (FAQ)

What types of applications is this drive designed for?

It is ideal for demanding applications such as extruders, winders, cranes, centrifuges, and test stands that require precise speed/torque control, dynamic braking, and high performance.

What is the benefit of Flux Vector Control (FOC)?

FOC provides superior low-speed torque, excellent speed regulation, and fast dynamic response, similar to DC motor performance, making it suitable for challenging loads.

How does the integrated dynamic braking work?

The drive includes a built-in braking circuit. To use it, you must connect an external braking resistor (not included) to dissipate regenerative energy from the motor during deceleration or overhauling loads.

Can I expand the I/O capabilities?

Yes, optional I/O expansion cards are available to add more digital or analog inputs and outputs, allowing the drive to handle more complex control tasks.

What does the UL Type 1 enclosure rating mean?

A UL Type 1 enclosure is intended for indoor use and provides protection against accidental contact with live parts. It is suitable for mounting in industrial control panels.