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19 Aug

Special state control of electric sliding door

After the system parameters of sliding doors are already set, the controller must adjust the operating states of automatic doors, for example, opening speed, closing speed, opening time, closing force, etc. The adjustable function of high-quality sliding doors can be extended to 30 minutes. The following are special state control of sliding doors.

sliding doors operator SD280
1. Emergency state
Here, it does not refer to automatic doors designed for emergency, for example, fire exit doors and emergency exits. Instead, it refers to automatic doors installed in public areas in emergency. Such doors can keep opening or be easily opened when power is off, which enable people to flee the scene in emergency. High-quality automatic doors have a switch which can set whether the door should be opened or closed when power is off.
2. Access control system and emergency state
Mechanical locks in sliding doors will lower the automation degree, make centralized control impossible in large public places. And misoperation or other reasons may lead to overloading or even burning out the motor. So sliding door operator in non-public places should have keys that firemen can use to open the door in case of emergency. This is a compromise of security function and emergency state function of sliding doors.

sliding doors 02
3. Auto-reversing function and contingency state
Controllers of sliding doors have auto-reversing function, that means the doors will run in the reversed direction automatically when touching obstacles or human body. This is an important protection function that avoid burning out of automatic doors. Then, the doors will automatically carry out the learning program, re-test and record the system parameters, during which time any signal interference must be avoided. Or the microprocessor will continue to carry out the learning program, which will lead to malfunction or dysfunction if it fails to return to normal in time. Auto-reversing function can avoid clashing and clipping in environment where the number of passing personnel is limited. But in public places where the flow of people is large, security function should be taken into consideration.
With the development of sliding doors, we believe sliding doors applicable to all kinds of occasions will emerge in the future.

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