Author: Caichang Wen
Poly International Trade (Shanghai) Co., Ltd. System Engineering Department
Briefly describe the elevator control system, introduce the Fuji FFA elevator control system and its application.
CAN communication, elevator control system
The summary elevator control system, introduces the Fuji FFA elevator control system and its the application.
CAN Communication, Elevator Control System
As a kind of building transportation equipment, elevators have accelerated humanity's pace of entering a civilized era. It must be highly secure and scientific, so its control system has received extensive attention. The elevator control system needs a lot of communication with various signals of the elevator peripheral equipment, such as the elevator's position signal, layer selection signal, indicator signal of the answer selection floor, display signal of the number of floors of the elevator, and position signal of the hoistway, etc. These signals have rapidly increased with the increase in floors.
In general, nowadays common parallel communication methods use many lines, which have high requirements on the number and performance of I/O nodes of elevator controllers, and the installation and maintenance of elevators are troublesome. In particular, when the number of floors increases, the number of I/O ports in the parallel system is required to increase accordingly, which leads to a significant increase in costs, and greatly increases difficulty in installation and maintenance, and elevator products are not versatile. In order to solve the above problems, Fuji Electric has developed a high-performance, low-price serial communication elevator central processing board and I/O interface board. At the same time, our company has developed other communication board components based on mature elevator control system components in China. Perfect elevator control system. The system uses CAN bus serial communication, only need a pair of signal lines, can achieve the basic control functions of the elevator, its low cost, communication distance, simplify system installation, maintenance and management, easy to achieve modular design, Improve system performance. It has the advantages of reliable performance, low price, complete functions, easy maintenance, simple operation, beautiful appearance and convenient debugging.
2 system introduction
2.1 System Configuration Examples (One of the Configurations)
2.2 System Description
The new Fuji FFA serial elevator control system is a high-performance, low-cost elevator control system consisting of an original central processing control board and an I/O interface board manufactured by Fuji Electric of Japan. The system uses Fuji elevator-specific central processing board. , With a rapid processing of elevator operation procedures, data exchange, display man-machine interface; ensure reliable operation of the elevator control program; and fast, PHILIPS SJA1000T on-site CAN bus; and TJA1050BUS interface, the latest serial storage technology records data; The external watchdog and the internal watchdog function of the control chip form a two-stage program monitoring to ensure the normal operation of the control program. The high current switching power supply LM2596 ensures the system power supply is stable and has low requirements for the power supply; the high-speed opto-isolated optocoupler and the internal of the microcomputer. The frequency division technique enables the NW3P08-41C (42C) central processing board to receive up to one phase of 100KHZ*2CH or 2 phase 50KHZ*1CH432bit count pulses. 2.3 System Components
• Main control board, which contains the following components:
Central processing board NW3P08-41C (standard in Japan), central processing board NW3P08-42C (selected in Japan),
I/O interface board NW3W05606R (standard in Japan), communication board FFA-ACB-02 (standard in China).
• Car communication board FFA-CCB-02 (standard in China)
• Car expansion board FFA-CCB-E-01 (optional in China)
• Car display panel FFA-CDSP-02 (standard in China)
• SFA call board FFA-OCB-02 (standard in China)
2.3.1 Introduction to the Main Control Board
The main control board has 6 rich menus including system information, user login, parameter setting, system call, fault recording, and function selection. The system information menu includes main board input status, main board output status, internal board input status, elevator speed, system date, system time, internal status 1, internal status 2, and other information; the user login menu contains ordinary users. Password, advanced user password, super user password and other information; parameter setting menu has brake open time, automatic return to base station time, lighting off time, service running, brake off time, deceleration running time, main control board input signal inversion, Main control board output signal inversion, base station layer, fire floor, lock ladder and other information; system call menu, there are internal call instruction registration, outbound instruction registration and other information; fault record menu has 50 fault history records; function In the selection menu, there are functions such as a fire fighting function, a driver function, a function by date, a function by week, and the like. The information is turned on and off.
2.3.2 Car Communication Board Introduction
The call button in the car is collected, and the driver, direct driving, and automatic operation signals are transmitted to the main control board through the CAN bus to control the elevator operation.
2.3.3 Introduction to the Car Expansion Board
For the registration of car call orders, when the number of calls exceeds 16 floors, one block is added for every eight floors.
2.3.4 Car Display Panel Introduction
Installed in the car, showing elevator floors and status information.
2.3.5 Presentation of Call Boards Outside the Office
Installed outside the hall to show elevator floor and status information.
Address code setting: insert the SET_ADD shorting insert into the SET side, click the board outbound button, the board layer becomes the floor where the board is installed, then remove the shorting piece and insert it into the ADD side. .
2.4 Use of the System
2.4.1 Prepare and check before and after power-on.
2.4.2 Correctly set the parameters in the main control board and inverter.
2.4.3 Confirmation of the installation of part of the hoistway in the elevator.
2.4.5 Well position self-learning.
(Steps: 1. The elevator is in the middle floor 2, the running state is set to normal 3, enter the menu No. 360, and change this parameter to “1”. At this time, the elevator descends to the lowest level at the inspection speed, and stops for 2 seconds and starts to run upwards. After the parking at the top floor, the elevator will automatically return to normal status and 360 will automatically change to "0".)
2.5 Six advantages of the system
2.5.1 provides customers with a certain development platform.
Customers can modify or add some of the content according to their own requirements, and they can even consider to conduct two full developments according to their own needs.
2.5.2 System Stability
Japan imported main control board, main control board reference PLC system design, program perfect comprehensive.
2.5.3 "Fooling" operation
All the functions can be completed by four keys, and after the elevator has set the parameters before leaving the factory, only the well self-learning operation is required at the scene, and the elevator can be run by express train without any parameters and data.
2.5.4 Comprehensive Functions
The parameters that may be adjusted at the elevator site can basically be modified by the operator.
2.5.5 Full Visualization
All Chinese display, input and output point status, elevator floor, speed, direction and other information can be displayed, and more particularly is to provide the customer defined two sets of 32-bit internal register status display.
2.5.6 Comprehensive Configuration and Complete Options
The main control board, the car communication board, the car expansion board, the car display board, outside the hall call display board and other configuration options. LCD display (shape: horizontal display, vertical display; color: blue white, blue on white) and dot matrix display (shape: square, dot; color: red, orange, blue) etc. display configuration select.
The Fuji FFA elevator control system adopts CAN bus technology to integrate the elevator system into a modular design, conforming to the development trend of modern elevator control systems, and at the same time distributing the control functions to control modules in various places, and is completed by the control boards. The basic data processing and control functions reduce the burden on the main control board and improve the safety and real-time performance of the elevator control system. So Fuji FFA elevator control system is a very reliable, perfect, stable elevator control system.
 Teng Shufang. CAN bus communication design in elevator control system. China Elevator, 2006, (3).