1. www.invt.com.cn 1 Injection Moulding Energy-saving SHENZHEN INVT ELECTRIC CO.,LTD. www.invt.com.cn

2. 2 External Schematic Diagram  1. Current signal acquisition card (Following Figure)  2. Voltage signal acquisition card (Terminal provided by inverter) 1IA 1IB 2IA2IB

3. www.invt.com.cn 3 Energy Saving Principle Valve

4. www.invt.com.cn 4 Features  Control Mode:Open-loop vector control, V/F control;  Frequency setting mode: Compared output of pressure and flow signals;  The signal transform panel adopts hall module,It can transform 0~1A signal of pressure and flow proportioning valve to be 0~10V signal to provide the feedback of inverter, also can connect 0~10V signal;  Big torque at low frequency;  Better over-load function;  The protection class is IP54. The full-close design to prevent dust, air and corrosion. Better adaptability of surroundings and long using life;

5. www.invt.com.cn 5 Features  For 18.5kW~75kW, the DC resistor can be built-in to improve the power factor of output and eliminate the input high harmonic;  Dual-circuit mains/ saving design to ensure no fault of system;  Fault protection function;  Better anti-jamming function, the input /output power line is equipped with filter magnetism, separate wiring of high and low electricity;  The energy saving rate is 5%~10% higher than V/F control mode.

6. www.invt.com.cn 6 Disadvantage of Traditional Injection Moulding:  Valve adjustment;  Input power changes slightly;  Consume large proportion of energy;  Result in overflow. Advantage of INVT Injection Moulding Energy-saving:  Regulate the oil pump speed automatically and the oil supply;  Maintain the actual oil supply and the actual load flow of the injection molding machine be consistent;  Minimize the energy consumption and eliminate overflow;  Ensure the motor to be stable and precise operation;  Can soft start the motor, improve the power factor and save energy.

7. www.invt.com.cn 7 T hanks!

8. www.invt.com.cn 8 Prepared by : Ms.Demi Dong Checked by: Mr. Jian Wang Tel: 86-755-86028447 Fax: 86-755-86028420 Mobile phone: +86 135 109 260 31 Online MSN Messenger support: demiping@hotmail.com demiping@hotmail.com Online Skype Support: demiping@skype.com E-mail: dongping@invt.com.cn dongpingdemi@gmail.comdemiping@skype.comdongping@invt.com.cndongpingdemi@gmail.com