PWM DC Moter Speed Control Proportional Valve Ftrquency Converter Steering Engine Laser Power Supply Energy Controller

Introduction
JMDM-COM8PWM PWM controller is shenzhen jingmin digital machine co., LTD., independent research and development of an industrial high-performance single chip microcomputer controller,with 8 channels photoelectric isolation digital signal input, 3 channels 8 bits high-speed 20KHZ transistor output, 8 channels programmable frequency PWM signal output, can realize DC voltage (5v ~ 30v) for controlling pulse duty ratio and pulse frequency control. Can be flexible used in all kinds of automatic control occasions: such as stage lighting dimming control, outdoor landscape lamp dimming control; Fever, pressure regulating,laser source adjusting power; DC motor speed control, proportional valve, frequency converter, air conditioning load,etc. There are two works: independent control, serial port monitor. Independent control mode is the controller based on single chip microcomputer automatic program logic to realize independent control; Serial port monitor mode is done by computer equipment such as PC,  online via serial port to send instructions and control communication to real-time monitor the input and output.
JMDM-COM8PWM serial port online pulse width modulation (PWM) output system is JMDM-COM8PWM examples of application in serial port monitoring, by JMDM-COM8PWM industrial controller(have written the underlying program MCU), power supply, serial port line, ordinary computer (need run jingmin serial port monitoring software) four parts, serial port monitoring 8 channels pulse width modulation (PWM) output field effect tube as the main characteristics, also called jingmin online PWM output system ,JMDM-RS485/232 serial port control PWM system. Clients don't need to understand the professional programming language, direct use jingmin serial port monitoring software or according to the communication protocol by using common software such as serial debugging assistant send strings, can be easily implemented using computer serial port online control 8 channels field effect the duty ratio of output can realize true time control 8 channles output voltage,power. Along with the product can provide PC serial port control VB sample application and communication protocols,convenience customer on the basis of the second development, integration use; Can be used in computer serial communication to realize the light-dimmer,pressure regulating, adjusting power, DC motor speed control study, experiment and various industrial applications.

Technical parameters
1.Digital quantity input: 8 channels high-speed photoelectric isolation digital quantity input, can be used for all kind of external sensors (such as photoelectric converter, capacitive ,inductive,hall various sensors type) to realize the detection and control of switch quantity;
2.Digital output:
1) 3 channels high-speed transistor output: 20KHZ fixation high speed frequency, transistor output type, PNP output form, commonly used as photoelectric isolating digital output. When used as PWM output, 8 bits duty ratio accuracy, can control load voltage DC 5 to 24V, output maximum load current is 4A, can be used to control proportional valve, steering engine, frequency converter and other external load;
2) 8 channels PWM output: programmable set frequency range 0 ~ 20KHZ, field effect tube output types, NPN output form, 8 bits duty ratio accuracy, as 8 channels light-dimmer, pressure regulating,adjusting power output channels, can control load voltage range is DC 5V ~ 30V, output every channel load current maximum is 10A, can external connect lighting, heating, motor load, realizing the dimming, pressure regulating and speed control function;