SIM controller, German SIM model, SIM price

The SIM controller is the core of the access control system, the system brain that manages entry and exit channels. It has evolved from traditional door locks. The door controller is an access control product that integrates card reading and control, 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 by simply connecting the power supply. If a door uses card swipe for entry and button press for exit, the controller can connect to only one card reader per door; this is called a unidirectional controller. If a door uses card swipe for both entry and exit (an exit button can also be connected), each controller can connect to two card readers per door: one entry card reader and one exit card reader. This is called a bidirectional controller.

SIM 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 outside world via input interfaces and store it in memory. This information mainly includes two parts: data from sensors such as temperature and pressure sensors, and manual input from human intervention, such as switch and 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 arithmetic processing to actuators such as relays, motors, and lamps via output interfaces. This process repeats continuously, meaning the microcomputer in the system constantly monitors various information and processes it in time to ensure normal system operation.

SIM controller functions

1) Motion control: In the machining industry, programmable logic 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 motors or servo motors. In most cases, the PLC sends data describing the target position to the module, which moves one or several axes to the target position. As each axis moves, the position control module maintains appropriate speed and acceleration to ensure smooth motion. It has been used in centerless grinding, stamping, segmented punching of complex parts, roll forming, and grinding applications. 2) Timing control: The PLC provides users with a certain number of timers. With timer instructions configured, such as those in OMRON's CPM1A, each timer can achieve timing control from 0·1 to 999·9s or 0·01 to 99·9s. SIEMENS's S7-200 series offers timers with time base units of 0·1s/0`01s and 0·00s, enabling timing ranges from 0·001s to 3276·7s. Timer duration can be extended in specific ways. Timing accuracy is high, and timer setting is convenient and flexible. The PLC also provides high-precision clock pulses for accurate real-time control.

SIM controller wiring

Programmable logic 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 operates, the two output terminals with the same number are connected. In different groups, output voltages of different types and voltage levels can be used. However, within the same group, outputs must use power supplies of the same type and voltage level. Since the 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 output, the magnitude of the inductive load affects the relay's operating life, so a long relay operating life is required.

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