LAUER controller, German LAUER model, LAUER price

The LAUER controller is the core of the access control system, the system brain that manages entrance and exit channels. It has evolved from traditional door locks. The door controller is an access control product that integrates card reading and control functions, available in standalone and networked versions. Simply put, the access controller is a device that integrates the access control board and card reader; higher-end models also include a keyboard and display. It can be used as a complete access control system simply by connecting to a power supply. For a single door where entry is via card swipe and exit is via button press, the controller can only connect one card reader per door, known as a unidirectional controller. For a single door where both entry and exit are via card swipe (an exit button can also be connected), each controller can connect two card readers per door: one for entry and one for exit, known as a bidirectional controller.

LAUER controller principle

All electronic devices with microcontrollers operate on principles related to the specific equipment. However, the basic principle is: 1) Receive information from the external environment via input interfaces and store it in memory. This information mainly consists of two parts: data from sensors such as temperature and pressure sensors, and manual input from human intervention, such as switch or button operations. 2) The central processing unit in the microcontroller performs high-speed arithmetic processing on the input data according to the program. 3) Send the results of the processing via output interfaces to control actuators, such as relays, motors, and lamps. This process repeats continuously, meaning the microcomputer in the system constantly monitors various information and makes timely adjustments to ensure normal system operation.

LAUER controller functions

1) Motion control: In the machining industry, programmable controllers are integrated with computer numerical control (CNC) to perform motion control for machine tools. Many PLC manufacturers provide single-axis or multi-axis position control modules for driving stepper or servo motors. In most cases, the PLC sends data describing the target position to the module, which moves one or more axes to the target position. As each axis moves, the position control module maintains appropriate speed and acceleration to ensure smooth motion. This has been applied in centerless grinding, stamping, segmented punching of complex parts, roll forming, and grinding applications. 2) Timing control: PLC provides users with a certain number of timers. With timer instructions set, such as OMRON's CPM1A, each timer can achieve timing control from 0·1 to 999·9s or from 0·01 to 99·9s. SIEMENS's S7-200 series offers timers with time bases of 0·1s/0`01s and 0·00s, enabling timing from 0·001s to 3276·7s. Timer duration can be extended in specific ways. Timing accuracy is high, and setting is convenient and flexible. PLC also provides high-precision clock pulses for accurate real-time control.

LAUER controller wiring

Programmable controllers have 3 output types: relay output, thyristor output, and transistor output. Output terminal wiring is divided into independent output and common output. When the PLC output relay or thyristor activates, the two output terminals with the same number are connected. Different groups can use output voltages of different types and voltage levels. However, outputs within the same group must use power supplies of the same type and voltage level. Since PLC output components are encapsulated on the printed circuit board and connected to the terminal block, short-circuiting the load connected to the output components will burn out the printed circuit board. Therefore, fuses should be used to protect the output components. When using relay outputs, the magnitude of the inductive load affects the relay's service life, so long relay service life is required.

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