INVT GD200A VFD and HMI Solution for Winder & Unwinder Machines with Torque Control

Abstract: A winder and unwinder machine are essential in various industries, particularly in the manufacturing and processing of web materials such as paper, film, textiles, rubber, wire, and tape. This article introduces the application of INVT HMI and VFDs with torque control function in such machines.

Keywords: GD200A Drive, QE series HMI, Winder Unwinder, Torque control

I. Introduction

MACHINE PROCEDURE:
The process of winding, unwinding, slitting, and rewinding may seem simple but requires precision to ensure high-quality output, especially at high production speeds. Here's a breakdown of the machine types:

• Winders: Create a Master Roll (or Jumbo Roll) from the continuous wire off the production line.

• Unwinders: Unwind the Master Roll to produce smaller finished reels. Wire unwinding may require up to four unwinders.

• Unwinding methods include:

• Peripheral unwinding (motorized belts) for wire and nonwoven reels

• Axial unwinding (motor with axial coupling) for paper reels

• The VFD is operated through an HMI using the Modbus protocol.

• HMI functions include Start, Stop, Reset, Emergency Stop, and monitoring of power, current, voltage, and frequency.

• One GD200A VFD is used on the wire unwinding machine; another on the torque control winding machine.

II. Project Information and Solution

1. Project information:
Customer: Wire winding and unwinding machine manufacturing company

2. INVT Solution:

3. System Configuration:

4. System Features:

• The HMI provides convenient control and commissioning, reducing operational complexity. Even ordinary personnel can operate it after minimal training.

• During operation, the HMI displays parameters such as current, voltage, and fault information, allowing real-time monitoring and enhancing production safety.

• The GD200A VFD applies advanced open-loop vector control, ensuring high torque at low speed.

III. System Commissioning

IV. Advantages and Benefits

• High-accuracy torque control eliminates anti-winding issues

• High-speed and stable operation

• High performance with good thread sealing and continuous running capability

• User-friendly HMI for easy setup and monitoring

• Simple operation: only need to load the material and empty roll

V. Conclusion

Automatic winding machines suit a wide range of manufacturers. INVT provides an economical and fully automatic solution that reduces manpower needs and minimizes human errors. This solution is ideal for customers looking to upgrade from manual to automated operations.