Servo Drives Motor Along With Pump

KEB Srvo System for Injection Molding Machines:

The increased environmental awareness makes the energy consumption and the noise development of machines and plants to decisive criteria. With the speed-controlled hydraulic pump an application solution has

been developed, in which the frequency inverters KEB COMBIVERT F5 have been proven a thousandfold. The pressure and with it the volume  ow are corrected dynamically by the internal PID-control to the process requirements. Demand-controlled volume  ow rates result in following advantages:

• Energy saving up to 60 %
• Reduction of noise level
• Operation in the eld weakening range (speed > 1.500 rpm)
• Up to 60 % less heat input into the hydraulic oil
• Longer lifetime of the hydraulic oil
• Steadily adjustable volume  ow (0 -100%)
• Application in 1- up to 4-quadrant operation depending on design
• Reduction of motor size by 87 Hz characteristic
• Same system for 50/60 Hz 380-480 V mains
• No high starting currents
• Application in 1- up to 4-quadrant operation depending on design
• Reduction of motor size by 87 Hz characteristic
• Same system for 50/60 Hz 380-480 V mains
• No high starting currents