Elevator controller consists of two parts: hardware and software. The hardware includes the controller, controller backplane, card reader antenna, power supply, card reader, IC card ID card, and other components. The software includes the lower computer running control software and the upper computer write card authorization software. The following describes the elevator controller system structure and elevator controller system functions, so that everyone can understand the function of the elevator.
Elevator controller's profile
Elevator controller consists of two parts: hardware and software. The hardware includes the controller, controller backplane, card reader antenna, power supply, card reader, IC card ID card, and other components. The software includes the lower computer running control software and the upper computer write card authorization software.
The intelligent elevator floor personnel control system is specially designed for the control personnel in the elevator car to access specific floors. Controls cardholders in and out of specific floors that are allowed in and out to prevent random access to all floors to ensure safety; with block increments, deletions, query card numbers and floor settings; operating modes: direct access by single-level card holders. No need to Keys; multi-layer card users after the card is swiped, must be reached according to the permission key recorded in the card; optional password keyboard, to achieve when you forget to bring the card to enter the password when the elevator; with time zone control: to achieve a certain period of time the system is open, During a certain period of time, the elevator is automatically operated according to regulations; the system and the elevator itself are connected by passive contacts. The two are completely isolated and will not have any impact on the original performance of the elevator; the product is equipped with a self-check device. When the system malfunctions or is damaged, the signal can be sent out, and it will be automatically detached from the original system to restore the original state of the elevator without affecting the use of the elevator. With the fire signal input interface, when the passive dry contact fire switch signal is activated, the IC card is activated. The elevator system does not work, and the elevator is restored to its original state; the use of low-power CMOS microcomputers, power-off personnel and storage data can be stored for 10 years without loss; including advanced reception cards Energy; networking or offline status system will automatically record each successful credit card information using the elevator.
Elevator control system structure
Elevator control system hardware consists of car control panel, hall signal, PLC, inverter, and speed control system. The inverter only completes the speed control function, and the logic control part is completed by the PLC. The PLC is responsible for processing the logic relationship of various signals, thus sending start and stop signals to the frequency converter. At the same time, the inverter also transmits its own working status to the PLC, forming a two-way contact relationship. The system is also equipped with a coaxial motor connected to a rotary encoder and PG card to complete the speed detection and feedback, forming a speed closed loop and position closed loop. In addition, the system must also be equipped with a braking resistor. When the elevator decelerates, the motor is in a state of regenerative power generation, which feeds back power to the inverter and suppresses the rise of the DC voltage.
The elevator system is a six-floor six-station system with a car, safety windows, counterweights, safety gear, sensors, leveling floors, floor-separated magnetic boards, end station boards and various action switches in the hoistway. There is an overload and full-load switch at the bottom. There are floor displays, call buttons and instructions on each floor outside the hoistway, a base station electric lock on one floor, organic rooms on the top of the hoistway, built-in service room repair buttons, slow up, slow down switch, traction Machines, guide wheels and speed limiters, with bottom pits, buffers, speed limiter sheaves at the bottom of the road; hall doors, car doors, door machine mechanisms, doorknife mechanisms, door lock mechanisms, doors in the car Machine power circuit, safety touch panel, car top emergency stop, overhaul, slow up, slow down switch and car top lighting, car top cab, car door and hall door with floor display, car door right side with internal election Buttons and instructions, switch door button, bell button, overload, full load instructions. The focus of this paper is to reconstruct the elevator control cabinet originally controlled by the relay and use PLC to replace the relay for elevator control to improve the reliability and safety of the elevator; then the signal of the elevator is sent to the workstation for monitoring of the elevator running status through the DDC. .
The DC elevator has the characteristics of high speed, good comfort, and high leveling accuracy. This is because the DC drive system has good speed control performance and a wide speed range. DC motor speed control method has to change the terminal voltage UA, adjust the adjustment resistor Rtj, change the excitation magnetism.
There are usually two types of DC elevators:
(1) A thyristor-controlled generator consisting of a generator set and a motor drive system controls access to the elevator control system.
(2) SCR-powered SCR-motor drive system.
Both are using the method of adjusting the motor terminal voltage Ua to adjust the speed. The former is to adjust the output voltage of the generator by adjusting the excitation of the generator to adjust the speed, so it is called a thyristor excitation system. The latter uses a three-phase thyristor rectifier to convert AC to controllable DC and provide a DC motor speed control system, eliminating the need for a generator set, thereby reducing the cost and making the structure more compact. , maintenance is more complex, high cost, it is often used in high-speed buildings that require a higher speed, it has a good sense of comfort, high accuracy of the leveling layer, the speed of 1. 5-1.75m / s fast ladder and 2.5 - 5m/s high speed ladder.
Elevator controller system function
1, fire protection function:
When encountering an elevator fire, the elevator smart card controller will automatically leave the elevator, and the elevator will return to the smart card control state without elevator, so that the personnel in the elevator can get out of danger immediately.
2, limited time function:
Property personnel write the valid time for each elevator card. During this period, the owner normally swipes the card and passes the elevator. After the deadline expires, the elevator elevator card is invalid and the elevator button does not respond. The owner needs to go to the property. After payment, the property owner can re-write the owner's elevator-specific card for a corresponding period of time before the owner's elevator-specific card can be used normally.
3, deduction function:
The property manager writes the number of valid cards for each elevator, and the number of cards in the card is deducted once each time the owner applies the brush. When the number of cards in the card is less than 10, the card reader will send an alarm sound to prompt the user to recharge the card. When the remaining number is At 0 o'clock, the elevator card cannot be used.
4, maintenance-free features:
When the elevator credit card controller fails, elevator maintenance personnel can dial a maintenance free switch directly on the elevator button connection board, so that the elevator button will automatically enter the state without card, the owner does not need to swipe the card, directly press the elevator button to take the elevator . For maintenance personnel, no need to restore the button line, directly send the faulty elevator credit card controller back to our company for maintenance. If it is within the warranty period, once the elevator credit card controller fails, it will immediately send a new one. The elevator credit card controller can be directly replaced with new ones for free. When elevator maintenance personnel receive a new elevator credit card controller, they can simply install it.
5, credit card function:
The authority of the elevator-specific card can be arbitrarily set according to the needs. After boarding, the card must be used after the card is swiped so that no card or unauthorized personnel can enter and use the elevator. After swiping the card, the button needs to be pressed manually or automatically.
Summary: The relevant information about elevator controller system structure and elevator controller system function is introduced here for everyone. I hope this article will be helpful to everyone. If you still have something you don't understand, you can leave a message to Xiaobian at the bottom. We will answer your questions as soon as possible.
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