How to benchmark import export performance

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• How to design an elevator system for a 300-story skyscraper?
• 3, PLC design of elevator operation control system
• 4, Three-story elevator PLC control system design and debugging
• 5, Seeking Siemens PLC elevator system design

How to design an elevator system for a 300-story skyscraper?

One way to solve this problem is to make the building flat.

The ideal solution is that two shuttle service elevators go directly from the underground to the lobby, and the other four service elevators run from the air lobby to the roof of the guest room. The service floor of the podium elevator is small, and the flow can be diverted by setting up a sufficient number of escalators (the escalator carrying capacity can reach 9,000 people/hour) without too much discussion.

Principles of elevator configuration: estimate the number of users of the building, determine the 5-minute carrying capacity requirements, and determine the escalator waiting time requirements.

The first thing that needs to be considered is the determination of the distribution and transformation system and the emergency power supply system and the access of the self-prepared power supply system, including supplyThe establishment of the electric voltage level, the establishment of a normal power supply system, the selection of self-provided emergency power supply system equipment, and the reasonable and effective connection of the self-provided emergency power supply system to the main system need to be paid attention to.

Elevator; 4 elevators should be installed when 40 people live on each floor and the number of floors is more than 35. In the preliminary design and construction drawing design stage, the number of elevators should be calculated and determined. The service quality of the elevator should meet the following requirements: the average waiting time of passengers should not exceed 120 seconds, and the interval between elevators should not exceed 60 seconds.

Door system: The main function of the door system is to seal the entrance of the floor station and the entrance of the carriage. Weight balancing system: The main function of the system is to relatively balance the weight of the car. In the elevator work, the weight difference between the car and the counterweight can be kept within the limit to ensure the normal towing transmission of the elevator.

PLC Design of Elevator Operation Control System

1. Figure 2-1 PLC Elevator Linkage Control System Unified hardware block diagram. It can be seen from Figure 3-1 that the system mainly consists of two parts, of which the logical part of elevator control is implemented by PLC. Through analysis and research on elevatorsThe actual operation situation and control laws, so as to design and develop the elevator linkage control program, so that the PLC can control the operation of the elevator.

2. The comfort of elevator operation has been improved, so that the elevator has achieved a relatively ideal control effect. Compared with traditional elevators, the elevator designed in this article has a good sense of comfort in operation, can save electricity in life, achieve good economic and social benefits, and achieve the ideal purpose.

3. The technical indicators you mentioned are the main indicators of the country that the elevator system follows now, or is your research method actually to use PLC control to realize the only control of the elevator! You need to search for other specific content on the Internet. There should be a lot of this.

Three-story elevator PLC control system design and debugging

It mainly involves the overall design scheme, composition and modular program design of the PLC control system of the five-story elevator.

. Draw the PLC terminal wiring diagram and control ladder diagram according to the requirements of the question. Two. Complete the PLC terminal wiring work, and use the programmer to input the ladder diagram control program to complete the debugging. Complete the course design instructions. Defense questions: 1. Clarify the idea of program design and workflow.

Design requirements I/O allocation on the basis of understanding the process. Carry out the software design of the PLC control system and draw functional diagrams, ladder diagrams and circuit diagrams. Design and draw process drawings, specifically including electrical panel layout drawings and wiring diagrams.

Hardware design of elevator 1 Hardware configuration of elevator control system This system is an AC variable frequency conversion speed control system mainly composed of PLC, frequency converter, control box, display and drag motor (Variable Voltage Variable Frequenc Y, abbreviated as VVVF).

Seek Siemens PLC elevator system design

The elevator control system is mainly composed of speed regulation part and logical control part. The performance of the speed control part plays an important role in the comfort of passengers during elevator operation. At present, most of them use high-performance frequency converters to measure the speed of the induction motor using rotary encoders to form a closed-loop vector control system.

The hardware structure diagram of the hardware structure system is shown in Figure 1.PLC is Siemens' S7-200 series CPU221. PLC receives the summoning signal from the control plate and each layer of the elevator box, the functional signal of the car and door system, and the status signal of the shaft and frequency converter, and realizes the selective control of the elevator through program judgment and calculation.

Software: step7 Hardware: Siemens 300, 400 series Components: self-reset button start, stop switch, corresponding to I0.0, I0.1 respectively; motor start output Q0.0; use S_ODTS timer, start delay 5S, stop delay 10S.

PLC is Siemens' S7-200 series CPU221. The PLC receives the call signal from the control plate and each layer of the elevator box, the functional signal of the car and door system, and the status signal of the shaft and frequency converter, and realizes the selection control of the elevator through program judgment and calculation.

List of the catalog of this article:

• 1,How to benchmark import export performance PLC control system design of three-story elevator
• 2、
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