For the elevator to run, the first condition must have power. After the power supply enters the control cabinet, it is divided into power supply and control power supply. The output of the power supply is controlled by the control power supply. The working conditions of the control power supply are composed of a safety circuit, a door lock circuit, and a control method (ie, maintenance / normal state-driver, fire protection). The power supply is normal and cannot run, and these three conditions cannot be established at the same time. Similarly, there are four reasons for the emergency stop during operation-the frequency conversion system regards the power source and the safety circuit as mixed, because when the frequency conversion system fails, the safety circuit is disconnected at the same time.
Below the Passenger Elevator Factory to share the most basic principles of elevators:
In the elevator leveling process, the relay type is usually divided into two levels-the first deceleration and the second deceleration. For example, when the elevator is called from the first floor to the third floor, when the car will run through the second floor to the third floor, the floor sensor on the third floor will act. The relay on the third floor is activated-the sensor is installed in the middle of the second and third floors-because there is a registration instruction on the third floor and it is forward, the control system sends a stop signal:
The first stage of deceleration begins, and the elevator is switched from fast to slow. The car continues to go up. The last one on the car roof leveling sensor first enters the floor magnetic isolation board. The control system issues a stop-ready command-the second stage of deceleration starts and the elevator enters the crawling state from the slow car. After the leveling sensor enters the magnetic isolation plate (some will delay for some distance), the control system sends an arrival signal-the elevator leveling.
This type of elevator has appeared leveling (with deceleration) or even non-stop (non-deceleration). Observe the working status and analyze it as described above. Most PLC and microcomputer elevators use the * pulse value to calculate the car position, and store the pulse value of each floor at the same time. According to the pulse value control system, one level deceleration, two level deceleration or even more deceleration signals are issued in turn. The leveling sensor only crawls the leveling state after entering the magnetic isolation plate. The crawling distance is calculated according to the set conditions or the sensor enters the leveling level.
According to the above state, it is easier to distinguish the fault location by judging at which level the elevator unevenness occurs.
There is also the problem of car position correction. As we all know, for the wrong floor fault, if the elevator is driven to the lower limit, the elevator will restore the position memory, or reset.
However, during normal operation, the elevator does not touch the lower or upper terminal, but still maintains an accurate position. Of course, it will constantly adjust the position by the leveling sensor action. However, when the leveling sensor is used to correct it, it cannot meet its precise requirements. This is why sometimes the elevator may occasionally fail to stop on certain floors.
HUZHOU FUJI ELEVATOR CO.,LTD. Reminds you to face the faults of the elevator correctly to avoid breaking the fault.
Below the Passenger Elevator Factory to share the most basic principles of elevators:
In the elevator leveling process, the relay type is usually divided into two levels-the first deceleration and the second deceleration. For example, when the elevator is called from the first floor to the third floor, when the car will run through the second floor to the third floor, the floor sensor on the third floor will act. The relay on the third floor is activated-the sensor is installed in the middle of the second and third floors-because there is a registration instruction on the third floor and it is forward, the control system sends a stop signal:
The first stage of deceleration begins, and the elevator is switched from fast to slow. The car continues to go up. The last one on the car roof leveling sensor first enters the floor magnetic isolation board. The control system issues a stop-ready command-the second stage of deceleration starts and the elevator enters the crawling state from the slow car. After the leveling sensor enters the magnetic isolation plate (some will delay for some distance), the control system sends an arrival signal-the elevator leveling.
This type of elevator has appeared leveling (with deceleration) or even non-stop (non-deceleration). Observe the working status and analyze it as described above. Most PLC and microcomputer elevators use the * pulse value to calculate the car position, and store the pulse value of each floor at the same time. According to the pulse value control system, one level deceleration, two level deceleration or even more deceleration signals are issued in turn. The leveling sensor only crawls the leveling state after entering the magnetic isolation plate. The crawling distance is calculated according to the set conditions or the sensor enters the leveling level.
According to the above state, it is easier to distinguish the fault location by judging at which level the elevator unevenness occurs.
There is also the problem of car position correction. As we all know, for the wrong floor fault, if the elevator is driven to the lower limit, the elevator will restore the position memory, or reset.
However, during normal operation, the elevator does not touch the lower or upper terminal, but still maintains an accurate position. Of course, it will constantly adjust the position by the leveling sensor action. However, when the leveling sensor is used to correct it, it cannot meet its precise requirements. This is why sometimes the elevator may occasionally fail to stop on certain floors.
HUZHOU FUJI ELEVATOR CO.,LTD. Reminds you to face the faults of the elevator correctly to avoid breaking the fault.
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