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CPM Series

Discover the advantages and technical specifications of VSD compressors, including energy savings, loading and unloading modes, and permanent magnet motor technology.

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CPM Series

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  1. CPM Series Permanent Magnet Motor Variable Speed Screw Air Compressor

  2. Why we choose the VSD compressor PART 01

  3. 空气需求曲线 1 • 40 • 20 • 0 Big Air Fluctuation • Measured results of air compressor usage in more than 4000 customers in the world Air demand 1 Air demand 2 • 空气需求曲线 2 • 120 • 100 • 80 • Sunday • Capacity in l/s • Monday • 60 • Tuesday • Wednesday • Thursday • Friday • Saturday • 2:45 • 6:30 • 0:00 • 0:15 • 1:30 • 4:00 • 5:15 • 7:45 • 9:00 • 10:15 • 14:00 • 16:30 • 17:45 • 20:15 • 21:30 • 11:30 • 12:45 • 15:15 • 19:00 • 22:45 • 88% • Time Air demand 3 • 12% • 空气需求曲线 3 • The average loading determines the air consumption of the compressor. • Usually we choose air compressor model is according with factory biggest air demand (biggest loading factor) of 3 36

  4. Low Loading Rate When the air compressor is unloading, it consumes approximately 60% electric power but giving you nothing in return. Since the compressor’s electric motor still consumes about 60% of full load kw OH MY GOD!!! of 5 36

  5. Air Compressor Life Cycle Cost Analysis The cost of fixed speed compressor • The cost of VSD compressor Consumption Maintenance Energy saving Installation Investment VSD screw air compressor average energy saving is more than 30% So it is very necessary to select the VSD screw air compressor!!! of 6 36

  6. How the VSD compressor save energy? PART 02

  7. VSD compressor loading and unloading mode The inverter controls the speed to deliver the air volume, avoid unloading and save energy. Below is the fixed speed compressor operation mode. Green is loading, yellow is unloading. of 8 36

  8. VSD compressor loading and unloading mode • ENERGY WASTE • Start repeatedly • Unloading Electric current(A) • When is unloading, power consumption is a large part of the total power consumption in most applications All of above waste,using the VSD compressor will not exist of 9 36

  9. Fixed speed compressor VS normal VSD compressor of 10 36

  10. Tips If you always worry about the inverter, use our normal VSD compressor is very suitable for you!! Fitted with “VSD” and “Fixed Speed” selector switch, unit can be reverted to normal fixed speed operation if the inverter is faulty or under repair, not affect the production efficiency. of 11 36

  11. Normal VSD VS permanent magnet synchronizing VSD of 36 12

  12. YOUR BEST CHOICEpermanent magnet VSD compressor PART 03

  13. Technical Parameter of 14 36

  14. Details photos of 16 36

  15. Features 3 Light-spots • Permanent Magnet Motor – improve the motor efficiency • Inverter technology– no unloading, no wastage • No pressure loss – reduce the pressure consumption 40% Energy Saving!!! of 17 36

  16. Features Permanent magnet motor technology (since 2000) Screw technology (since 2006) of 18 36

  17. Features motor Tapered shaft • Construction energy saving • One-shaft direct driven, can save about 3%~5% transmission energy No gear No bearing No oil seal No shaft seal shell No gear box No need shafting alignment Gap of stator & rotor Cooling fan Compressor male rotor Cool air bolt stator PM rotor No gear, no bearing, no oil seal, no gear box, no need shafting alignment of 19 36

  18. Features Construction energy saving PM motor and air-end are one-shaft structure, no bearing in the motor, no coupling and belt, reduce the fault rise of bearing, coupling, belt and very low maintenance cost Compact size of the PM motor, it is about 1/3 of normal VSD motor, therefore the PM motor more easy for installation of 20 36

  19. Features PM motor energy saving Asynchronous Motor Permanent Magnet Synchronous Motor Permanent magnet motor Through the AC voltage magnetic field of stator coil and magnetic force to let the rotor run Asynchronous motor Stator coil produce a rotation magnetic field (+ pole & - pole), rotor (secondary conductor) feel the magnetic field and run of 21 36

  20. Features PM motor energy saving • With the high-performance permanent magnet material, PM motor don’t lose magnetic even with the temperature of 140 ℃.It’s life will be more than 15 years. • Specialized corona-resistance enameled wire is applied to stator coil . • Wide frequency conversion range: 25~100% of 22 36

  21. Features PM motor energy saving PM motor & Asynchronous motor efficiency comparison Motor efficiency(%) 22kw PM motor 22kw normal motor Motor speed (rpm) of 23 36

  22. Features PM motor energy saving No matter in any speed, PM motor always keep in high efficiency, but normal motor low efficiency during in low speed (normal motor efficiency loss about 5-10%) of 24 36

  23. Features Inverter energy saving • Inverter adjusts the motor speed to let the compressor offer exact compressed air according with the air demand • top brand Innovate inverter • Vector control technology, fast response • Wider voltage range: 300v~440v of 25 36

  24. Features Inverter energy saving Soft starting, the VSD compressor can be started from 0hz by the inverter. The start current is small. It can reduce the damage of power network, electric elements and other components. Starting current for the fixed speed start-delta starting is about 3-times motor rated current or HP. Direct start is 6-7 times motor rated current or HP. Example: starting current for a 50hp motor is 150hp(for not exceeding 8 seconds), whereas the SOFT STARTING current for an inverter compressor is only at 25% if motor HP. This means a 50hp inverter compressor needs only 12.5HP starting current! of 26 36

  25. Features Inverter energy saving Reduce 1bar pressure can save 7-8% energy!!! Constant pressure setting • VSD compressor can maintain the pressure within 0.1bar When a fixed speed compressor’s unload pressure is set at 7.5bar, and reload pressure at 6.5bar. Inverter compressor’s CONSTANT PRESSURE can be set at 6.5bar, supplying constant 6.5bar pressure air to the usage points. This lower pressure can minimize air consumption to the lowest. No need to compress the air to higher 7.5bar pressure reduces motor amperes hence the energy consumption Fixed speed pressure Variable speed pressure Pressure (MPa) Variable speed setting pressure Fixed speed unloading Variable speed pressure Fixed speed loading T (air compressor working time) Variable speed control and Fixed speed control comparison of 27 36

  26. Features AIR-END life is much longer Air-end speed for fixed speed compressor is always at the maximum 2950rpm, load or no load. For inverter compressor, it is Variable between 1200-2950rpm, Fix speed compressor overhaul is recommended at 24000hours, whereas inverter drive air-end need only to be overhauled at 32000hours of 28 36

  27. Features Color touch screen has the remind & record function, show the compressor situation clearly Maintenance tips, which can set the run time and stop time Carry out the remote control and user-machine operation, which means your compressor can be controlled by phone (option) of 29 36

  28. Features Easy for maintenance of 30 36

  29. Features High temperature & humidity environment design, compressor can be used in maximum ambient T 46℃ environment of 31 36

  30. Features Top door is locking design, easy to open to clean the cooler and fan of 32 36

  31. Features Uses stainless steel pipe, durable and anti-aging Oil filter is thread and o-ring seal, easy to remove and no leakage of 33 36

  32. Features The fan is low speed, with longer service life Cooler and fan can be removed independently, there is 20% cooling margin. of 34 36

  33. Features Reliable inlet valve system. No need to be concerned about oil injection when the emergency stop and power is off suddenly. of 35 36

  34. Thanks for your choice

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