1.Industrial Introduction

Forging presses as core equipment in metal forming and processing, are widely used in automobile manufacturing, home appliance production, aerospace, and other fields. Traditional presses are driven by fixed-speed motors, which generate large inrush currents during startup, impacting the power grid; their speed remains constant during operation, making adjustments impossible according to process requirements; and mechanical braking generates noise and wear. Under traditional industrial frequency operation, the motor runs continuously at full load, resulting in up to 40% energy waste. Simultaneously, the frequent start-stop cycles of the motor cause mechanical shocks and increased oil temperature, further exacerbating equipment maintenance costs.

2.Progress Description

On-site, the motor stator and rotor are made from stamped silicon steel sheets. The forging press converts rotary motion into linear motion through a crank-connecting rod mechanism, and uses punches to perform stamping, bending, and stretching processes on the metal material. Its working process has obvious periodicity, requiring frequent starts, stops, and speed changes.

3.Parameter Settings

This application involves loads with increased inertia. Using free-stop can solve the cost problem of increasing braking resistors due to overvoltage during stopping. 

4.Photos At Site

5.Solution Features

Soft start, protecting equipment and power grid: The VC VFD adopts advanced soft start technology, effectively reducing starting inrush current, protecting the motor and power grid, and extending equipment lifespan.

Vector control, precise and stable: Employing advanced vector control algorithms, it delivers powerful low-frequency torque, stable output across all frequency bands, and rapid dynamic torque response, ensuring stable and unfluctuating output frequency at the moment the punch press clutch closes, resulting in reliable operation.

Speed ​​tracking and emergency stop/start: Equipped with a scientifically sound speed tracking algorithm, it can automatically track the current operating frequency when the motor is not stopped, enabling emergency stops and starts. It also ensures smooth, trouble-free starting during motor inertial operation, improving safety performance.

Multiple control options to adapt to various working conditions: It offers multiple flexible control modes to fully meet the diverse needs of punch presses under different complex working conditions.

Wide voltage input, widely adaptable: It features a wide voltage input design of 380-480VAC, which can flexibly cope with different voltage environments. Software performance optimization further ensures stable and efficient operation.