Introduction
When a manufacturing line requires precise speed and torque control for a 50hp motor, the FANUC VFAS3-4370PC Toshiba AS3 series AC drive delivers reliable performance. This high-performance drive handles demanding applications with its versatile control modes and robust construction.
Technical Specifications Breakdown
The VFAS3-4370PC operates on a nominal input voltage of 460 VAC with 3-phase input and output. It provides 74.5A of output current and supports variable torque applications up to 88A. The drive offers multiple control modes: V/Hz, FOC, encoder, or torque mode, allowing precise motor management. Its output frequency range spans 0.1-590 Hz, and the carrier frequency adjusts from 1-16 kHz. The integrated EMI filter and Safe Torque Off (STO) enhance safety and reliability.
Industry Applications
In a conveyor system handling heavy loads, the VFAS3-4370PC maintains consistent torque even at low speeds. For a pump or fan application, its variable torque capability reduces energy consumption while maintaining process control. The drive's built-in dynamic braking handles rapid deceleration in applications like centrifuges or winders.
Installation & Setup Guidance
Mount the drive on a panel or wall using the A4 frame size. Connect power to the 3-phase input terminals and motor to the output terminals. Use the screw terminals for control wiring. The integrated DC reactor and EMC filter reduce electrical noise. Ensure user-supplied external fuses are installed per local codes.
Maintenance & Reliability
The VFAS3-4370PC operates reliably in temperatures from -15 to 50 deg C. Its UL Type 1 enclosure and IP20 rating protect against dust and accidental contact. Periodic inspection of cooling fans and terminal connections helps maintain long service life. The built-in STO function adds a layer of safety during maintenance.
Compatibility & Integration
This drive communicates via two Ethernet ports (RJ45) and one RS-485 port (RJ45). Supported protocols include EtherNet/IP, Modbus TCP, Modbus RTU Slave, and a non-secure HTTP web server. Optional EtherCAT, encoder, and I/O cards expand its integration capabilities. It works with 3-phase induction and permanent magnet AC motors.
Selection Guide & Purchasing Advice
Before ordering, verify your motor's horsepower (50hp) and voltage (460 VAC). Confirm the frame size (A4) fits your panel space. The VFAS3-4370PC includes a built-in DC reactor, EMC filter, and conduit box. Contact SpareTechPLC for current availability and lifecycle status.
Frequently Asked Questions
Q: What control modes does the VFAS3-4370PC support?
A: It supports V/Hz, FOC, encoder, or torque mode.
Q: What is the enclosure type and IP rating?
A: UL Type 1 enclosure with IP20 rating.
Q: Does this drive include dynamic braking?
A: Yes, integrated dynamic braking is built-in.
Q: What communication protocols are supported?
A: EtherNet/IP, Modbus TCP, Modbus RTU Slave, and a non-secure HTTP web server.
Q: What is the output frequency range?
A: 0.1 to 590 Hz.
