home lift elevators

Forced deceleration limit for home lift elevators up and down Elevators with speeds below 1 m/s are generally equipped with an upward forced deceleration limit and a downward forced deceleration limit. The installation position should be equal to (or slightly less than) the deceleration distance of the elevator. Elevators with speeds above 1.5 m/s are generally equipped with two upward forced deceleration limits and two downward forced deceleration limits.

Because fast elevators are generally divided into single-layer running speed and multi-layer running speed, the deceleration distance is different at different speeds, so it is divided into multi-layer running deceleration limit and single-layer running deceleration limit. Function 1: When the elevator reaches the end station, the elevator is forced to enter deceleration operation. Function 2: At present, many elevators use the forced deceleration limit as the forced correction point of the elevator floor position. Trouble phenomenon 1: Elevator express train cannot run upward, but slow train can.

Reason: It may be that the upward forced deceleration limit is broken and in a disconnected state. Trouble phenomenon 2: The elevator express train cannot run downwards, but the slow train can. Reason: It may be that the upward forced deceleration limit is broken and in a disconnected state. Fault phenomenon 3:

The elevator is in a fault state, and the program is protected. The fault code may be displayed as a speed change switch fault. Reason: It may be that the upward or downward forced deceleration limit is broken. Because the forced deceleration limit is very important in elevator safety, many elevator programs are designed to have a detection function for this limit. If the limit is detected to be broken, the program will be protected. The elevator is in a 'dead' state. 

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