VFAS3-4037PC AC Drive | 5 HP with Ethernet Toshiba

The Toshiba VFAS3-4037PC is a versatile high-performance AC drive from the advanced AS3 series, designed for precision motor control. This 5 HP, 460V drive packs professional-grade features—including Flux Vector Control and integrated safety—into a compact A1 frame, making it ideal for demanding yet space-constrained applications.

Core Technical Specifications

• Brand & Model: Toshiba VFAS3-4037PC
• Series: AS3 Series High-Performance Drive
• Rated Power: 5 HP
• Supply Voltage: 3-Phase, 460 VAC Input & Output
• Current Rating: 9.3 A (Constant Torque), 12.7 A (Variable Torque)
• Frame Size: Compact A1
• Enclosure: UL Type 1 / IP20 for protected installations.

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 sound and performance.
• Dynamic Braking: Integrated braking circuit (external resistor required).
• 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 & System Integration

• 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 types of applications are ideal for this 5 HP drive?

It excels in applications requiring precise control, such as machine tool spindles, positioning systems, test stands, small extruders, and high-performance pumps or fans where accurate speed and torque regulation are critical.

What is the benefit of the 1-16 kHz carrier frequency range?

This wide range allows you to balance motor noise and drive performance. Higher frequencies reduce audible motor whine, while lower frequencies minimize switching losses and heat generation in the drive.

Does the integrated dynamic braking include a resistor?

No. The drive includes the internal braking chopper circuit, but you must supply and connect an external braking resistor matched to your application's braking energy requirements.

How does the dual Ethernet port setup help in installation?

The dual ports allow for easy daisy-chaining of multiple drives on the same network segment without an external switch, simplifying cabling and reducing overall network installation costs.

What is needed to implement the Safe Torque Off (STO) feature?

STO requires a safety-rated control circuit (e.g., from a safety relay or safety PLC) to be connected to the designated safety terminals. Implementation must follow all relevant safety standards and include proper validation.