Toshiba VFAS3-4185PC Drive | 25/30 HP Dual Rating AS3

The Toshiba VFAS3-4185PC is a flexible high-performance AC drive from the AS3 series, offering dual power ratings for versatile application. This 25 HP/30 HP, 460V drive provides advanced control modes, robust safety features, and extensive connectivity in a compact A3 frame, making it ideal for demanding industrial environments.

Core Technical Specifications

• Brand & Model: Toshiba VFAS3-4185PC
• Series: AS3 Series High-Performance Drive
• Dual HP Rating: 25 HP (150% OL) / 30 HP (120% OL)
• Supply Voltage: 3-Phase, 460 VAC Input & Output
• Current Rating: 39.2 A (150% OL) / 46.3 A (120% OL)
• Frame Size: A3
• Enclosure: UL Type 1 rated.

Advanced Control & Performance Features

• Control Modes: V/Hz, Flux Vector Control (FOC), Encoder or Torque Control.
• Dual Overload Capacity: Selectable 150% (Heavy Duty) or 120% (Normal Duty) for 60 seconds.
• Integrated Safety: Embedded Safe Torque Off (STO) compliant with IEC 61800-5-2, SIL3.
• Dynamic Braking: Integrated braking circuit (external resistor required).
• Diagnostics: Real-time clock for fault logging; QR code display for instant troubleshooting.

Communication & Connectivity

• Network Ports: Dual-port Ethernet (EtherNet/IP) and RS485 (2-wire/4-wire).
• Embedded Web Server: For remote monitoring and configuration via standard browser.
• Expansion: Optional cards for EtherCAT, encoder feedback, and additional I/O.
• Protocols: Modbus TCP, Modbus RTU, EtherNet/IP.

I/O Configuration

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

Physical & Environmental Data

• Dimensions (HxWxD): 21.8" x 8.3" x 9.2".
• Mounting: Panel or wall mount.
• Motor Compatibility: 3-phase induction and permanent magnet AC motors.
• Designed for reliable operation in standard industrial conditions.

Frequently Asked Questions (FAQ)

What does the dual horsepower rating mean?

You can configure the drive as a 25 HP unit with higher overload capacity (150% for 60s) for heavy-duty applications, or as a 30 HP unit with standard overload (120% for 60s) for normal duty, providing application flexibility.

What is the purpose of the embedded STO safety?

Safe Torque Off (STO) is a safety function that prevents the drive from generating output torque. It allows for safe maintenance and access to the motor without disconnecting main power, meeting SIL3 safety integrity levels.

How does the QR code troubleshooting work?

The drive can display a QR code linked to specific fault information or parameter details. Scanning the code with a smartphone provides instant access to troubleshooting guides and technical documentation.

Can I use both Ethernet ports simultaneously?

Yes, the dual-port Ethernet allows for daisy-chaining multiple drives in a line topology or connecting to separate networks, simplifying cabling and network architecture.

What applications benefit most from this drive?

It is excellent for applications requiring robust performance and safety, such as material handling systems, mixers, pumps, fans, and machine tools that need flexible power ratings and advanced control.