DOLD controller Germany DOLD model DOLD price

DOLD controller is the core control device used to control the start, operation, forward/reverse movement, speed, and stop of electric vehicle motors, as well as other electronic components of electric vehicles. It is like the brain of the electric vehicle and is an important component. Electric vehicles mainly include electric bicycles, electric two-wheel motorcycles, electric tricycles, electric three-wheel motorcycles, electric four-wheel vehicles, battery-powered vehicles, etc. Electric vehicle controllers have different performance and characteristics due to different vehicle models. Ultra-quiet design technology: unique current control algorithm, suitable for any brushless electric vehicle motor, and has considerable control effect, improving the universal adaptability of electric vehicle controllers, so that electric vehicle motors and controllers no longer need matching.

DOLD 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, at which time the chuck is magnetized. 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. One is the polling mode, and the other is the identification mode. In polling mode, the controller continuously sends query codes to the card reader and receives responses from the card reader. This mode continues until the card reader senses a card. When the card reader senses a card, it generates a different response to the controller's polling command. In this response, the card reader transmits the internal code data read from the sensed 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 sensed 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 response to the card reader to restore its status, while the access control controller returns to polling mode.

DOLD controller functions

1) Counting control: PLC provides users with counters divided into ordinary counters, reversible counters (up/down counters), high-speed counters, etc., used to complete counting control commands for different purposes. When the counter value equals the set value or falls within a certain numerical range, a control command is issued. The counter value can be read during operation and can also be modified during operation. 2) Step control: The controller provides users with a certain number of shift registers, which can conveniently complete step control functions. After one process is completed, the next process is automatically performed. After one work cycle ends, the next work cycle is automatically entered. Some PLC also have dedicated step control instructions, making step control more convenient.

DOLD controller faults

Whether the microcontroller is working normally is mainly detected and troubleshooted by writing programs. This detection requires hardware and software for "burning" code. The principle of detection is to "burn" a piece of normal code with detection functions into the microcontroller using the hardware and software. Two aspects are checked: First, whether the target code can be normally written into the microcontroller. If it cannot be written normally, it indicates that the microcontroller is damaged and needs to be replaced with a microcontroller of the same model. Second, if the target code can be normally written into the microcontroller, whether the effect after writing matches the functions set by the program. If it does, the microcontroller is normal. When replacing the microcontroller, it is best to use a microcontroller of the same model and then write the target code provided by the company. The price of microcontrollers is currently generally relatively cheap, with a retail price of about 5 yuan.

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