FHF Funke+Huster controller, German FHF Funke+Huster model, FHF Funke+Huster price

FHF Funke+Huster controller refers to a master command device that controls the starting, speed regulation, braking, and reversing of an electric motor by changing the wiring of the main circuit or control circuit and altering the resistance value in the circuit according to a predetermined sequence. It consists of a program counter, instruction register, instruction decoder, timing generator, and operation controller. It is the "decision-making unit" that issues commands, coordinating and directing the operation of the entire computer system. Controllers are divided into combinational logic controllers and microprogrammed controllers, each with its own advantages and disadvantages. Combinational logic controller design is troublesome and the structure is complex; once the design is completed, it cannot be modified or expanded, but its speed is fast. Microprogrammed controller design is convenient and the structure is simple, making modification or expansion easy. To modify the function of a machine instruction, only the corresponding microprogram needs to be recompiled; to add a machine instruction, only a segment of microprogram needs to be added to the control memory. However, it operates by executing a segment of microcode. The specific comparison is as follows: The combinational logic controller, also known as a hardwired controller, is composed of logic circuits and relies entirely on hardware to implement instruction functions.

FHF Funke+Huster controller principle

Electromagnetic chuck controller: AC voltage 380V is stepped down by a transformer, rectified by a rectifier into 110V DC, and then enters the chuck through the control device, magnetizing the chuck. For demagnetization, reverse voltage is applied to the circuit, enabling the controller to achieve the demagnetization function. Access control controller: The access control controller operates in two modes: inspection mode and identification mode. In inspection mode, the controller continuously sends query codes to the card reader and receives reply commands from the reader. This mode persists until the card reader detects a card. When the card reader detects a card, it generates a different reply to the controller's inspection command. In this reply command, the card reader transmits the internal code data read from the proximity card to the access control controller, causing the access control controller to enter identification mode. In the identification mode of the access control controller, the controller analyzes the internal code of the proximity card, compares it with the card data stored in the device, and executes subsequent actions. After completing the data reception action, the access control controller sends a command reply to the card reader to restore the reader's status, while the access control controller returns to inspection mode.

FHF Funke+Huster controller structure

1) Instruction register: Used to store the instruction currently being executed. An instruction is divided into two parts: the opcode and the address code. The opcode indicates the nature of the instruction's operation, such as addition or subtraction; the address code provides the address of the operand for this instruction or relevant information for forming the operand address (the operand address is formed via an address formation circuit). One type of instruction is the branch instruction, which changes the normal execution sequence of instructions; the address code part of this instruction provides the address of the instruction to be executed next. 2) Opcode decoder: Used to decode the opcode of the instruction, generating corresponding control levels to fulfill the function of analyzing the instruction. 3) Timing circuit: Used to generate time marker signals. In microcomputers, time marker signals generally have three levels: instruction cycle, bus cycle, and clock cycle. The micro-operation command generation circuit produces various micro-operation commands required to complete the operations specified by the instruction. The main basis for generating these commands is the time markers and the operational nature of the instruction. This circuit is the physical implementation of the expressions for various micro-operation control signals (such as the A→L expression above) and is the most complex part of the combinational logic controller. 4) Instruction counter: Used to form the address of the next instruction to be executed. Typically, instructions are executed sequentially, and instructions are stored sequentially in memory. Therefore, under normal circumstances, the address of the next instruction to be executed can be formed by adding 1 to the current address; the micro-operation command "1" serves this purpose. If a branch instruction is executed, the address of the next instruction to be executed is the target branch address. This address is located in the address code field of the current branch instruction and is sent directly to the instruction counter. The proposal of the microprogrammed controller arose because combinational logic design has disadvantages such as being difficult to design, inflexible, and hard to modify or expand.

FHF Funke+Huster controller installation

When installing the controller, avoid the following locations: (1) Ambient temperature exceeds the range of 0~50 degrees Celsius. (2) Relative humidity exceeds 85% or condensation is present (caused by sudden temperature changes or other factors). (3) Direct sunlight exposure. (4) Corrosive and flammable gases, such as hydrogen chloride and hydrogen sulfide. (5) Large amounts of iron filings and dust. (6) Frequent or continuous vibration, with a vibration frequency of 10~55 Hz and an amplitude of 0.5 mm (peak-to-peak). (7) Shock exceeding 10g (gravitational acceleration). To ensure reliable operation of the control system, programmable controllers are typically installed in control cabinets with protective enclosures to prevent dust, oil, and water splashes. To ensure the temperature remains within the specified ambient range, the installed equipment must have sufficient ventilation space, with a gap of at least 30 mm between the basic unit and expansion units. If the surrounding environment exceeds 55 degrees Celsius, install an electric fan for forced ventilation. To avoid electrical interference from other peripheral devices, the programmable controller should be kept as far away as possible from high-voltage power lines and high-voltage equipment; a distance of at least 200 mm should be maintained between the programmable controller and high-voltage equipment and power lines.

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