Delta Hybrid Servo Drive VFD-VJ Series
Automation for a Changing World
Servo Motor MSJ/MSO Series
Introduction
Hydraulic systems have been widely adopted as control systems for injection molding machinery, featuring high power density, excellent pressure and flow control, long service life design, and easy maintenance. A hydraulic system using an AC servo drive provides a fast response rate, higher duplication accuracy and constant torque to the system. It is a perfect integration of servo drive, motor and hydraulic technology. With precise control of pressure and flow, the hybrid servo system eliminates the energy waste, and improves the control system for injection molding machinery, enhancing market competitiveness.
With years of commitment to the plastic and rubber industries, Delta has developed the Hybrid Servo Drive VFD-VJ Series with superior drive performance and system integration capabilities. Compared with other product on the market, Delta’s VFD-VJ Series features excellent overload capability and high power density, enabling users to choose suitable models with less power for efficient cost saving. The VFD-VJ-C Series supports IPM motor parameter self-learning and various protection functions. For applications, it provides fan-cooled and oil-cooled types, enabling stable operations for a variety of environments and conditions.
Injection Molding Machine with Hybrid Servo System
Injection Molding Machine with Hybrid Servo System
After receiving pressure and flow commands from the injection molding machine controller, the VFD-VJ performs PID calculations with actual pressure and speed feedback to drive the servo motor and hydraulic pump with a quick response time and high repeatability.
Hybrid Energy System Features
- Significant reduction in energy consumption
- Saves up to 60% electricity compared to traditional injection molding machines (fixed displacement pump) during pressure holding and cooling processes
Energy-consumption curve during injection molding
- Traditional injection molding machine uses a relief valve or proportional valve to control the pressures and the flows during mold closing, injection, pressure holding and mold opening, while the Delta HES system enables automatic adjustment according to different injection conditions, reducing up to 75% in energy consumption.
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