(1) BLT-FS/BLT-NFS dragging system uses VVVF vector control to make start, accelerate, deceleration and stop the elevator very stable and comfortable, greatly improving the leveling accuracy, reduce the noise and vibration, and energy saving and environmental protection.
(2) Using permanent magnet synchronous motor frequency conversion drive door machine system, with low speed, high efficiency, constant torque, high control precision, low noise, small vibration, maintenance free and other characteristics;
(3) The synchronous door knife with integrated door lock function is adopted to prevent falling into the well due to pulling the door, and the synchronously opening and closing of hall and car door is truly realized;
(4) The upper and lower keeping devices are used to prevent the door from separating from the guide device and avoid the danger of falling into the well for human reasons