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The Varispeed L7 controls not only induction motors (IM) for conventional elevators but also permanent-magnet synchronous motors (PM): the new trend in elevator drives. Use Varispeed L7 ! It has just what you're looking for in an inverter! |
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Advanced Functions and Performance for Ride in Comfort |
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The Varispeed L7 has enhanced functions to ensure a smooth, quiet, and safe ride in an elevator and it has a high-operation efficiency for energy savings |
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Smooth and Safe |
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- The Zero-servo function and the Starting Torque Compensation control ( requires a load sencor ) realize smooth start-ups.
- The S-curve operation realizes smooth acceleration and deceleration.
- The advanced control suppresses vibration.
- The alarm detection prevents an elevator from moving unexpectedly in case of incorrect constant settings, incorrect wiring, or motor failure.
- The backup battery ensure safe elevator travel in case of power loss. (An optional battery unit ensures the 48/96 VDC input )
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High Speeds ( High Efficiency ) |
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The Automatic Positioning to Stop control (learning control ) automatically measures the distance between floors to implement the operation with the highest efficiency. The level of comfort increases because creeping is not used, and the installation and running costs are reduced. |
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Quiet |
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The carier frequency (fc) can be set to the optimum value for the application. For smooth operation in passenger elevators, set the frequency to 15kHz. |
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Varispeed L7, the inverter for both IM and PM drives |
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With an induction motor (IM). The motor , gear, and inverter are installed in machine room.
With a permanent-magnet synchronous motor (PM)
- No gears required.
- The motor and inverter are installed in a machine room.
- The motor can be separately installed in a corner as shown in the figure below.
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Advantages when combined with Yaskawa's gearless Interior Permanent |
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No pole sensor required. The Initial Magnetization Estimation function detects the position of the magnetic pole when the power is turned on. So, you do not have to reposition the magnetic pole after replacing the encoder.
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Catalogue Downloads |
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To download Yaskawa L7 Series Catalogue, please click the below link:-
http://www.e-mechatronics.com/en/support/catalog/inverter/kaepc71067600c_3_0/
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