What Is the FANUC VFAS3-4037PC?
When high-performance motor control meets demanding industrial environments, the FANUC VFAS3-4037PC delivers reliable operation. This Toshiba AS3 series AC drive handles 460 VAC three-phase input and output with a 5 HP rating. The drive supports multiple control modes including V/Hz, FOC, encoder, and torque mode, making it suitable for a wide range of applications. With an integrated dynamic braking system and a built-in DC reactor and EMC filter, the VFAS3-4037PC simplifies installation and reduces external component needs.
Technical Specifications Breakdown
The VFAS3-4037PC operates on a nominal input voltage of 460 VAC and provides a nominal output voltage of 460 VAC, both three-phase. It delivers 5 HP with three-phase input and carries an amperage rating of 9.3 A, with a variable torque amperage rating of 12.7 A. The drive includes an integrated EMI filter and Safe Torque Off (STO) for enhanced safety. Its enclosure is UL Type 1 with an IP20 rating, and the temperature range spans -15 to 50 deg C. The frame size is A1, and mounting options include panel or wall. Communication ports include two Ethernet RJ45 connections and one RS-485 RJ45 port, supporting EtherNet/IP, non-secure HTTP, Modbus RTU Slave, and Modbus TCP protocols at speeds of 10/100 Mbps and up to 38.4 kbaud.
Industry Applications
In conveyor systems and material handling, the VFAS3-4037PC provides precise speed control using FOC or encoder feedback, reducing mechanical wear and improving throughput. For pump and fan applications, the variable torque rating of 12.7 A allows efficient operation across varying loads, lowering energy consumption. The drive also suits machine tool spindles where torque mode and encoder feedback maintain consistent cutting forces, enhancing part quality.
Installation & Setup Guidance
Mount the VFAS3-4037PC on a panel or wall using the A1 frame dimensions. Use screw terminals for all power and control wiring. Ensure the drive receives a user-supplied external fuse for overcurrent protection. The built-in DC reactor and EMC filter reduce external filtering needs. Connect the Ethernet and RS-485 ports using RJ45 cables for network integration. Set the control mode via the user sequence programming language to match your motor type—three-phase induction or permanent magnet AC motor.
Maintenance & Reliability
Inspect the drive periodically for dust accumulation on the IP20-rated enclosure and check that ambient temperature stays within -15 to 50 deg C. Verify the integrated dynamic braking system functions correctly during deceleration cycles. The built-in battery (type CR2032, replacement D0-MC-BAT) supports parameter retention; replace it when the low-battery indicator activates. Regular inspection of terminal connections and external fuses helps maintain reliable operation and extends service life.
Compatibility & Integration
The VFAS3-4037PC integrates with automation networks through its two Ethernet ports supporting EtherNet/IP and Modbus TCP, and one RS-485 port supporting Modbus RTU Slave. It accepts input signals from 4-20 mA, voltage, potentiometer, or pulse train sources. The drive provides three analog input channels (11-bit resolution, 0-20 mA and 4-20 mA current, +/-10 VDC voltage) and two analog output channels (10-bit resolution, 0-20 mA and 4-20 mA current, 0-10 VDC voltage). Eight discrete inputs (24 VDC, sinking/sourcing) and three relay outputs (one Form C SPDT, two Form A SPST) handle control and status signals. Optional EtherCAT, encoder, and I/O cards expand functionality.
Selection Guide & Purchasing Advice
Before ordering the VFAS3-4037PC, confirm your motor specifications match the drive's 5 HP, 9.3 A rating and 460 VAC three-phase supply. Verify the enclosure type (UL Type 1, IP20) suits your environment. The drive includes a built-in DC reactor and EMC filter, but you must supply an external fuse. Contact SpareTechPLC for current lifecycle status and availability, as this product may be discontinued or obsolete. Our team can help verify compatibility and suggest alternatives if needed.
Frequently Asked Questions
Q: What control modes does the VFAS3-4037PC support?
A: The drive supports V/Hz, FOC, encoder, and torque control modes, as specified in the product data.
Q: What communication protocols are available on this drive?
A: The VFAS3-4037PC includes EtherNet/IP, non-secure HTTP, Modbus RTU Slave, and Modbus TCP via two Ethernet ports and one RS-485 port.
Q: What is the input signal range for analog channels?
A: Analog inputs accept 0-20 mA and 4-20 mA current signals, and +/-10 VDC voltage signals with 11-bit resolution.
Q: Does the drive include Safe Torque Off (STO)?
A: Yes, the VFAS3-4037PC includes Safe Torque Off (STO) as per the product specifications.
Q: What type of motor can I use with this drive?
A: The drive is designed for use with three-phase induction and permanent magnet AC motors.
