What Is the VFAS3-4750PC?
Struggling with motor control precision in demanding industrial applications? The FANUC VFAS3-4750PC, a Toshiba AS3 series AC high-performance drive, delivers robust performance for 3-phase induction and permanent magnet AC motors. This drive handles 460 VAC input and output, supports 100 hp with 3-phase input, and offers multiple control modes including V/Hz, FOC, encoder, or torque. Its UL Type 1 enclosure and IP20 rating make it suitable for panel or wall mounting in controlled environments.
Key Technical Specifications
The VFAS3-4750PC comes packed with features that ensure reliable operation. It operates from -15 to +50 °C and includes an integrated EMI filter and Safe Torque Off (STO) for enhanced safety. The drive provides 145 A variable torque amperage rating and 173 A constant torque rating. Communication is handled via (2) Ethernet RJ45 ports and (1) RS-485 RJ45 port, supporting EtherNet/IP, Modbus TCP, Modbus RTU Slave, and a non-secure HTTP webserver at 10/100 Mbps and up to 38.4k baud. The carrier frequency ranges from 1 to 8 kHz, and the output frequency spans 0.1 to 590 Hz.
Industry Applications
In manufacturing lines where precise speed and torque control are critical, the VFAS3-4750PC excels. For example, in conveyor systems handling heavy loads, the drive's FOC mode ensures smooth acceleration and deceleration, reducing mechanical stress. In pumping applications, its variable torque capability optimizes energy consumption. The built-in dynamic braking also provides quick stopping, ideal for centrifuges or winders.
Installation and Setup Guidance
Mount the VFAS3-4750PC on a panel or wall using the A5 frame. Use screw terminals for all connections. Ensure the user-supplied external fuse is properly rated for the load. The drive includes a built-in DC reactor and EMC filter to simplify installation. For communication, connect via RJ45 for Ethernet or RS-485. Optional EtherCAT, encoder, and I/O cards are available for expanded functionality.
Maintenance and Reliability
Regularly inspect the drive for dust buildup on the heatsink and ensure ambient temperature stays within -15 to +50 °C. The integrated Safe Torque Off (STO) function enhances safety during maintenance. Check the battery (CR2032, part D0-MC-BAT) periodically; it contains lithium and requires proper disposal per UN3091 guidelines. Following these steps extends the drive's service life and minimizes downtime.
Compatibility and Integration
The VFAS3-4750PC integrates seamlessly with automation systems using EtherNet/IP or Modbus TCP. It accepts 4–20 mA, voltage, potentiometer, or pulse train input signals. The 3 analog input channels (11-bit resolution) and 2 analog output channels (10-bit resolution) handle current/voltage signals. Discrete I/O includes 8 sinking/sourcing inputs (24 VDC) and 3 relay outputs (250 VAC/30 VDC). This flexibility makes it compatible with most PLCs and controllers.
Selection Guide and Purchasing Advice
Before ordering, verify your motor's horsepower and voltage match the VFAS3-4750PC's 100 hp and 460 VAC rating. Confirm the enclosure type (UL Type 1) suits your environment. SpareTechPLC stocks this drive and can advise on optional accessories like EtherCAT cards. Contact us for current lifecycle status and availability.
Frequently Asked Questions
Q: What control modes does the VFAS3-4750PC support?
A: It supports V/Hz, FOC (field-oriented control), encoder, and torque modes.
Q: What communication protocols are available?
A: The drive includes EtherNet/IP, Modbus TCP, Modbus RTU Slave, and a non-secure HTTP webserver.
Q: What is the input voltage requirement?
A: The nominal input voltage is 460 VAC, 3-phase.
Q: Does the drive include dynamic braking?
A: Yes, integrated dynamic braking is built-in.
Q: What is the Safe Torque Off (STO) feature?
A: STO provides a safety function that disables torque output for safe maintenance.
