Product Overview
The FANUC VFAS3-4150PC is a high-performance AC drive from the Toshiba AS3 series, engineered for precise motor control in demanding industrial environments. This new unit delivers 20 HP at 150% overload with 460 VAC three-phase input and output, making it a reliable solution for a wide range of automation applications.
Built for flexibility, the VFAS3-4150PC supports V/Hz, FOC (flux vector control), encoder feedback, and torque control modes, allowing you to match the drive to your specific process requirements. Its integrated dynamic braking and built-in DC reactor enhance performance and safety, while the UL Type 1 enclosure (IP20) suits panel or wall mounting.
Technical Specifications
Key parameters of the VFAS3-4150PC are listed below. These figures are verified from the manufacturer's data and ensure accurate system integration.
| Parameter |
Value |
| Rated Voltage |
460 VAC |
| Output Voltage |
460 VAC |
| Horsepower Rating |
25 HP (20 HP @ 150% OL) |
| Amperage Rating |
39.2 A (31.7 A @ 150% OL) |
| Phase |
3-Phase Input / 3-Phase Output |
| Control Modes |
V/Hz, FOC, Encoder, Torque |
| Enclosure |
UL Type 1 (IP20) |
| Frame Size |
A3 |
| Communication |
2 x Ethernet (RJ45), 1 x RS-485 (RJ45) |
| Protocols |
EtherNet/IP, Modbus TCP, Modbus RTU Slave, HTTP Web Server |
| Carrier Frequency |
1–16 kHz |
| Output Frequency |
0.1–590 Hz |
| Analog Inputs |
3 channels (11-bit, 0–20 mA / 4–20 mA, ±10 VDC) |
| Analog Outputs |
2 channels (10-bit, 0–20 mA / 4–20 mA, 0–10 VDC) |
| Discrete Inputs |
8 points (24 VDC, sinking/sourcing) |
| Discrete Outputs |
3 relay outputs (1 SPDT + 2 SPST, 2A/point) |
| Dimensions (H x W x D) |
21.80 x 8.30 x 9.20 inches |
Key Features & Benefits
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Integrated Dynamic Braking – reduces need for external braking units, saving panel space and cost.
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Safe Torque Off (STO) – enhances operator safety and simplifies machine safety circuits.
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Built-in EMC Filter & DC Reactor – improves electromagnetic compatibility and reduces harmonic distortion.
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Flexible Control Modes – V/Hz for basic applications, FOC and encoder modes for high-precision speed/torque control.
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Multiple Communication Ports – dual Ethernet and RS-485 support plant-wide integration and remote monitoring.
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Wide Operating Temperature – rated for -15 to 50°C, suitable for harsh environments.
Industry Applications
This drive is ideal for conveyors, pumps, fans, mixers, and machine tools where reliable speed control and energy efficiency are critical. For example, in a bottling line, the VFAS3-4150PC can precisely control conveyor speed via its analog inputs (4–20 mA) and maintain synchronization through encoder feedback, reducing product damage and downtime.
In HVAC systems, the drive's built-in PID and energy-saving features help optimize fan and pump performance, cutting electricity costs. Its robust construction and IP20 rating make it suitable for indoor control panels in manufacturing plants.
Installation & Setup Guidance
Mount the VFAS3-4150PC on a flat, vertical panel or wall using the provided mounting holes. Ensure adequate clearance around the unit for heat dissipation. Connect input power to the R, S, T terminals and motor to U, V, W. Use shielded cables for encoder and communication lines to minimize noise. Configure the drive via the built-in keypad or the web server interface using the Ethernet port. Always follow local electrical codes and use proper fusing as required.
Maintenance & Reliability
Regularly inspect the cooling fans and air filters for dust buildup, which can cause overheating. Check all power and control connections for tightness every 6 months. The drive's built-in protective functions—such as overvoltage, undervoltage, and overcurrent protection—help prevent failures. With proper maintenance, the VFAS3-4150PC delivers long service life and minimal downtime.
Compatibility & Integration
The drive communicates via EtherNet/IP, Modbus TCP, and Modbus RTU, enabling seamless integration with PLCs from Allen-Bradley, Siemens, and others. It also includes a non-secure HTTP web server for remote monitoring and configuration. Optional EtherCAT, encoder, and I/O cards expand its connectivity to meet custom requirements. The built-in RS-485 port supports multi-drop networks for centralized control.
Buying Guide
Before purchasing, verify that the drive's voltage rating (460 VAC) and horsepower match your motor. Confirm that the enclosure type (UL Type 1) suits your installation environment. The unit includes a CR2032 battery (UN3091) for encoder backup—check the replacement battery (part D0-MC-BAT) availability. For additional support, contact PLC Source PRO for expert advice and fast shipping.