10 HP AS3 Drive | Toshiba VFAS3-4075PC 460V

The Toshiba VFAS3-4075PC is a feature-rich high-performance AC drive from the AS3 series, designed for demanding 10 HP motor control applications. This 460V drive combines advanced Flux Vector Control with integrated safety and extensive network connectivity in a compact A2 frame, providing a powerful yet versatile solution for industrial automation.

Core Technical Specifications

• Brand & Model: Toshiba VFAS3-4075PC
• Series: AS3 Series High-Performance Drive
• Rated Power: 10 HP
• Supply Voltage: 3-Phase, 460 VAC Input & Output
• Current Rating: 16.5 A (Constant Torque), 23.5 A (Variable Torque)
• Frame Size: A2
• 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 speed regulation.
• Carrier Frequency: Adjustable from 1 to 16 kHz for optimized motor performance and noise control.
• Dynamic Braking: Integrated braking circuit (external resistor required).
• Safe Torque Off (STO): Integrated safety function compliant with industry 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 is this 10 HP drive ideal for?

It excels in applications requiring high performance and precision, such as machine tool spindles, pumps, fans, conveyors, mixers, and test stands where reliable speed and torque control are critical.

What is the main benefit of the adjustable carrier frequency?

The wide 1-16 kHz range allows you to balance motor acoustic noise (higher frequency) with drive efficiency and heat generation (lower frequency), tailoring performance to your specific application needs.

How does the integrated dynamic braking function work?

The drive includes an internal braking chopper. To utilize dynamic braking, you must connect an external braking resistor that is properly sized to dissipate the regenerative energy produced during motor deceleration.

Can I network this drive with other equipment?

Yes. With dual Ethernet ports supporting EtherNet/IP and Modbus TCP, it can be easily integrated into modern industrial networks for centralized control, monitoring, and data acquisition.

What is required to use the Safe Torque Off (STO) safety feature?

STO requires connection to a certified safety control device (e.g., safety relay, safety PLC) via the dedicated terminals. The safety circuit must be designed and validated according to applicable safety standards (e.g., ISO 13849, IEC 62061).