kistler controller, German kistler model, kistler price

The kistler controller is an electronic system for digital arithmetic operations, specifically designed for industrial environments. It uses a programmable memory to execute instructions for stored logic operations, sequential control, timing, counting, and arithmetic operations. It controls various types of mechanical equipment or production processes through digital or analog input (I) and output (O) interfaces. The programmable controller was developed on the basis of electrical control technology and computer technology, and has gradually evolved into a new type of industrial control device with a microprocessor at its core, integrating automation technology, computer technology, and communication technology. PLC has been widely used in the automatic control of various production machinery and processes, becoming one of the most important, widespread, and frequently applied industrial control devices. It is recognized as one of the three pillars of modern industrial automation (PLC, robots, CAD/CAM).

kistler Controller Classification

1) Non-networked door controller: A single unit manages one door. It cannot be controlled via PC software, nor can records be viewed; control is performed directly through the controller. Features include low cost and simple installation and maintenance. However, records cannot be viewed. It is unsuitable for locations with more than 50 people or frequent personnel turnover (referring to frequent hiring and resignations), and also unsuitable for projects with more than 5 doors. 2) Networked door controller: An access control type that can communicate with a computer, allowing direct management via software, including card and event control. Benefits include convenient management, centralized control, record viewing, and analysis of records for other purposes. Features include higher price and increased difficulty in installation and maintenance, but simple training and value-added services such as attendance tracking. Suitable for projects with many people, high mobility, and many doors. 3) TCP/IP network door controller: Also known as Ethernet networked access control, this is a networkable access control system that connects the computer and controller via network cables. In addition to all the advantages of networked access control, it offers faster speed, simpler installation, greater networking capacity, and the ability to network across regions or cities. However, equipment costs are high, and computer networking knowledge is required. Suitable for large projects, locations with many people, speed-critical applications, and cross-regional projects.

kistler Controller Structure

1) Central Processing Unit (CPU): The Central Processing Unit (CPU) is the control hub of the PLC, serving as its neural center. Each PLC system has at least one CPU. It receives and stores user programs and data entered from the programmer according to the functions assigned by the PLC system program; checks the status of the power supply, memory, I/O, and watchdog timer, and diagnoses syntax errors in the user program. When the PLC is running, it first scans and receives the status and data from field input devices, storing them in the I/O image area. It then reads the user program line by line from the user program memory, executes logical or arithmetic operations as per the instructions after command interpretation, and sends the results to the I/O image area or data registers. After all user programs are executed, the output states from the I/O image area or data in the output registers are transmitted to the corresponding output devices. This cycle continues until operation stops. To further improve the reliability of the PLC, large-scale PLC systems often use dual CPU redundant systems or triple CPU voting systems. Thus, even if one CPU fails, the entire system continues to operate normally. CPU speed and memory capacity are important parameters of the PLC, determining its operating speed, I/O quantity, and software capacity, thereby limiting the control scale. 2) Memory: System program memory stores system software; user program memory stores PLC user applications; data memory stores intermediate states and information during PLC program execution, equivalent to the RAM of a PC. 3) Input/Output Interface (I/O module): The interface between the PLC and electrical circuits is accomplished through the input/output section (I/O). The I/O module integrates the PLC's I/O circuitry. Its input latch reflects input signal status, and output points reflect output latch status. Input modules convert electrical signals into digital signals for the PLC system, while output modules do the reverse. I/O modules are categorized into discrete input (DI), discrete output (DO), analog input (AI), and analog output (AO). 4) Communication Interface: The main function of the communication interface is to enable data exchange (communication) between the PLC and external devices. Communication interfaces come in various forms, with the most basic being standard serial interfaces such as UBS, RS-232, and RS-422/RS-485. Connections can be made using multi-core cables, twisted pair, coaxial cable, or optical fiber. 5) Power Supply: The PLC power supply provides working power to the PLC circuitry and plays a crucial role in the entire system. A good, reliable power supply system is the most basic guarantee for the PLC. Generally, if AC voltage fluctuation is within +10% (+15%), the PLC can be connected directly to the AC mains without additional measures. Power input types include: AC power (220VAC or 110VAC) and DC power (commonly 24VDC).

kistler Controller Features

1) High reliability and strong anti-interference capability: The PLC replaces a large number of intermediate relays and time relays with software, leaving only a small amount of hardware related to inputs and outputs. Wiring can be reduced to 1/10~1/100 of that in relay control systems, significantly reducing failures caused by poor contact. High reliability is a key performance metric for electrical control equipment. The PLC uses modern large-scale integrated circuit technology, strict manufacturing processes, and advanced internal anti-interference techniques, resulting in high reliability. For example, the mean time between failures (MTBF) for the Mitsubishi F series PLC is as high as 30 hours. Some PLC systems using redundant CPU have even longer MTBFs. Regarding external circuitry, using an PLC for control reduces electrical wiring and switch contacts to one-hundredth or even one-thousandth of those in equivalent relay-contactor systems, greatly lowering failure rates. Additionally, the PLC features hardware self-diagnosis for faults, issuing alarm information promptly when issues arise. In application software, users can incorporate self-diagnostic routines for peripheral devices, providing fault self-diagnosis protection for circuits and equipment outside the PLC. Thus, the entire system achieves extremely high reliability. 2) Complete hardware suite, comprehensive functions, and strong applicability: The PLC has evolved into a range of large, medium, and small scaled products, which are standardized, serialized, and modularized. A wide variety of hardware devices are available for user selection, allowing flexible and convenient system configuration to create systems of different functions and scales. PLC installation and wiring are also convenient, typically using terminal blocks for external connections [3]. The PLC has strong load-driving capability, capable of directly driving general solenoid valves and AC contactors, suitable for industrial control applications of various scales. In addition to logic processing, modern PLC units mostly possess robust data arithmetic capabilities, suitable for various digital control fields. Numerous PLC function units have emerged, enabling PLC penetration into position control, temperature control, CNC, and other industrial controls. Enhanced PLC communication capabilities and developments in human-machine interface technology make it very easy to compose various control systems using PLC. 3) Easy to learn and use, popular among engineering technicians: As a general-purpose industrial control computer, the PLC is oriented toward industrial and mining enterprises. Its interfaces are easy to use, and its programming language is readily accepted by engineering technicians. Ladder diagram symbols and expressions are quite similar to relay circuit diagrams. Using only a few discrete logic control instructions of the PLC, relay circuit functions can be easily implemented. This opens a convenient path for those unfamiliar with electronic circuits, computer principles, and assembly language to use computers for industrial control. 4) Easy to modify: System design, installation, and commissioning require little effort, maintenance is convenient, and modifications are easy. PLC ladder programs generally adopt sequential control design methods. This programming method is regular and easy to master. For complex control systems, ladder diagram design time is much less than that for designing relay system circuit diagrams. The PLC uses stored logic instead of wired logic, greatly reducing external wiring of control equipment, significantly shortening the design and construction cycle of control systems, and making maintenance easier. More importantly, it enables changing the production process of the same equipment by modifying the program. This is well-suited for multi-variety, small-batch production scenarios. 5) Small size, light weight, and low energy consumption: Taking ultra-small PLC units as an example, recently produced models have base dimensions smaller than 100mm, equivalent to only a few relays in size. Thus, the volume of switchgear cabinets can be reduced to 1/2~1/10 of the original. Its weight is less than 150g, and power consumption is only a few watts. Due to its small size, it is easily installed inside machinery, making it an ideal controller for mechatronics integration.

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