Polytec controller, German Polytec model, Polytec price

The Polytec controller is the component that directs the various parts of a computer to work in coordination according to the functional requirements of instructions. It is the neural center and command hub of the computer, composed of three components: the instruction register IR, the program counter PC, and the operation controller 0C. It is extremely important for coordinating the orderly operation of the entire computer. Each functional component within the CPU performs a specific function. The implementation of control components manages the transmission of information between components and the flow of data. The path for transmitting information between many digital components is commonly referred to as the "data path." Where the information starts, which register or multiplexer it passes through in the middle, and which register it finally reaches must all be controlled.

Polytec controller types

1) Low-voltage LED product controller: Low-voltage LED products are generally designed for a voltage of 12V-36V, with 3-6 LED units connected in series per circuit. Resistors are used for voltage reduction and current limiting, keeping the current per circuit below 20mA. A LED product consists of multiple circuits of LED units. The advantages are low voltage, simple structure, and ease of design. The disadvantage is that when the product scale is large, the current is very high, requiring a low-voltage switching power supply. Due to these limitations, low-voltage systems cannot transmit power over long distances and are limited to small-volume products, such as sign text and small patterns. Based on this characteristic, the controller design specifications are as follows: For 12V, use 75A/30V MOS power transistors for control, with an output current of 8A per circuit; for 24-36V, use 60A/50V MOS power transistors for control, with an output current of 5A per circuit. Users can select the number of controller circuits based on the above specifications. For jumping effects, choose the NE20 low-voltage series; for gradient effects, choose the NE10 low-voltage series controller. Note that the LED units must use a common anode (+) connection method, with the controller controlling the cathode (-). The controller does not include a low-voltage power supply. 2) High-voltage LED product controller: High-voltage LED products are designed for AC/DC 220V voltage. Each circuit has 36-48 LED units connected in series, with a current per circuit below 20mA. There are two current-limiting methods. One is resistor current limiting. This method results in high resistor power consumption. It is recommended to connect one 1/4W metal film resistor in series for every 4 LED units to distribute heat evenly. This connection method is the most stable and reliable. The other method is RC series current limiting. In this method, most of the voltage drop occurs across the capacitor, resulting in low resistor power consumption. It can only be used in a stable, continuously lit state. If flashing occurs, the capacitor stores energy, which can double the voltage, making the LED units prone to damage. Any LED units using a controller must use the resistor current-limiting method. Generally, each circuit of LED units is one meter long, with a power of 5W, and three-color power per meter is 15W. Common gradient controllers include the NE112K for controlling DC 1200W, and the NE103D for AC loads 4500W and DC loads 1500W. If there are many flashing tube units, use the NE112K; if only overall flashing is required, use the NE103D. If using a gradient method, pay attention to load matching. Neon lights and LED units have different luminous distribution characteristics, and different types of loads should not be mixed in the same circuit. 3) Low-voltage serial controller: The characteristic of the low-voltage LED product serial controller is that it controls a large number of circuits, achieving control through serial signal transmission. Generally, controlling 512 units requires only 4 control lines. A serial LED controller requires registers on the LED light source board. The controller model NE040S can be selected, with a maximum capacity of 4096KBit. If the load consists of 512 units of LED, it can achieve a maximum of 8192 frames. Additionally, there are controllers used in the safety industry, which are devices that control detectors to monitor gas within various working intervals.

Polytec controller composition

1) Control memory (Control Memory) is used to store the microprograms corresponding to each machine instruction. The decoder is used to form the entry address for the microprogram corresponding to the machine instruction. When the microinstructions of the microprogram corresponding to a machine instruction are fetched one by one and sent to the microinstruction register, the micro-operation commands are issued according to the pre-designed sequence, thereby completing the function of that machine instruction. This applies to every machine instruction. 2) The width of the microinstruction directly determines the width of the microprogram controller. To simplify the control memory, measures can be taken to shorten the width of the microinstruction. For example, adopting field decoding with single-stage segmented decoding. Obviously, the control field of the microinstruction will be greatly shortened. Some micro-operation commands that need to be generated simultaneously cannot be arranged in the same field. To further shorten the control field, field decoding can be designed as two-stage or multi-stage.

Polytec controller wiring

The controller power supply is 50 Hz, 220 V AC ±10%. If a power failure occurs and the interruption time is less than 10 ms, the PLC operation is not affected. If the power interruption exceeds 10 ms or the voltage drop exceeds the allowable value, the PLC stops working, and all output points disconnect simultaneously. When power is restored, if the RUN input is connected, operation proceeds automatically. The PLC itself has sufficient resistance to interference from power lines. If power interference is particularly severe, an isolation transformer with a ratio of 1:1 can be installed to reduce interference between the equipment and ground. Good grounding is a prerequisite for ensuring the reliable operation of the PLC and can avoid accidental voltage surge hazards. The grounding wire should be connected to the machine's grounding terminal, with the basic unit grounded. If an expansion unit is used, its grounding point should be connected together with the grounding point of the basic unit. To suppress interference added to the power supply, input terminals, and output terminals, a dedicated ground wire should be connected to the programmable controller, and the grounding point should be separated from the grounding points of power equipment (such as motors). If this requirement cannot be met, common grounding with other equipment must be implemented, and series grounding with other equipment is prohibited. The grounding point should be as close as possible to the PLC.

Weidou Intelligent Technology specializes in selling German Polytec servo drives, Polytec servo amplifiers, Polytec programmable controllers, Polytec control units, Polytec industrial PCs, Polytec logic controllers, Polytec drum controllers, Polytec relay controllers, Polytec control systems, Polytec motion controllers, Polytec microcontrollers, Polytec control modules, Polytec control switches, Polytec servo controllers, and Polytec expansion modules. Polytec products are original imports from Germany. Customers are welcome to inquire and place orders.