Compact AS3 Drive | Toshiba VFAS3-4007PC 1 HP

The Toshiba VFAS3-4007PC is a compact yet powerful high-performance AC drive from the AS3 series, offering professional-grade features in a 1 HP package. This 460V drive delivers advanced control modes, integrated safety, and extensive connectivity options, making it ideal for precision applications where space and performance are both critical.

Core Technical Specifications

• Brand & Model: Toshiba VFAS3-4007PC
• Series: AS3 Series High-Performance Drive
• Rated Power: 1 HP
• Supply Voltage: 3-Phase, 460 VAC Input & Output
• Current Rating: 2.2 A (Constant Torque), 4 A (Variable Torque)
• Frame Size: Compact A1
• Enclosure: UL Type 1 / IP20 rated.

Advanced Control & Performance

• Control Modes: V/Hz, Sensorless Flux Vector Control (FOC), Encoderless/Encoder Torque Control.
• Frequency Range: 0.1 Hz to 590 Hz for precise low-speed and high-speed operation.
• Carrier Frequency: Adjustable from 1 to 16 kHz for optimized motor performance and noise reduction.
• Dynamic Braking: Integrated braking circuit (requires external resistor).
• Safe Torque Off (STO): Integrated safety function compliant with safety standards.
• Integrated Features: Built-in DC reactor and EMC filter.

Communication & Connectivity

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

I/O Configuration

• Analog Inputs: 3 channels (0-20 mA / 4-20 mA, ±10 VDC).
• Analog Outputs: 2 channels (0-20 mA, 0-10 VDC).
• Digital Inputs: 8 programmable inputs, 24 VDC sinking/sourcing.
• Digital Outputs: 3 relay outputs (1 Form C, 2 Form A).

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 applications benefit from a 1 HP high-performance drive?

It is perfect for precision applications such as small spindles, laboratory equipment, positioning stages, small pumps, and automated test systems where accurate speed/torque control, safety, and network integration are required despite the small motor size.

Why does a 1 HP drive need Flux Vector Control (FOC)?

FOC provides superior control performance—excellent low-speed torque, precise speed regulation, and fast dynamic response. This is valuable even in small HP applications where process quality, positioning accuracy, or responsiveness is critical.

Is an external braking resistor always needed?

It is required if your application involves frequent deceleration, overhauling loads, or requires rapid stopping. If the motor coasts to a stop without generating significant regenerative energy, a resistor may not be necessary.

How can the dual Ethernet ports be used?

They enable easy network integration. One port can connect to the plant network, while the other can daisy-chain to the next device, simplifying cabling in multi-drive cabinets without needing an external switch.

What is involved in using the Safe Torque Off (STO) feature?

Using STO requires connecting the designated safety terminals to a safety-rated control circuit (e.g., from a safety relay). The entire safety function must be designed and validated according to relevant machinery safety standards.