BRX (Do-More) PLC PID with PWM Output

We will now look at the BRX (Do-More) PLC PID with PWM (Pulse Width Modulated) output. A Proportional-Integral-Derivative algorithm is a generic Control Loop feedback formula widely used in industrial control systems. A PID algorithm attempts to correct the error between a measured process variable and the desired setpoint by calculating and then outputting a corrective action that can adjust the process accordingly and rapidly, to keep the Error to a minimum. We will be using an immersion heater in a cup of water to keep the temperature at a constant value. Using the Do-More Designer software we will perform an autotune on our PID instruction. Our immersion heater will be controlled through a relay using time proportional control from our PID output. Let’s get started. More information can be obtained on our website. This includes all of the links mentioned in this video. https://accautomation.ca/brx-plc-pid-with-pwm-output The entire BRX Series PLC can be found at the following location: https://accautomation.ca/series/brx-do-more-plc/ Here are the individual posts with video links: System Hardware https://accautomation.ca/brx-plc-system-hardware https://youtu.be/wSYgY09VYeA Installing the Software https://accautomation.ca/brx-plc-installing-the-software https://youtu.be/iFI1ebP8Zkk Establishing Communication https://accautomation.ca/brx-plc-establishing-communication https://youtu.be/shU5g8MA8VM Numbering Systems and Addressing https://accautomation.ca/brx-plc-numbering-systems-and-addressing https://youtu.be/-GiKnIDycKY First Program https://accautomation.ca/brx-plc-first-program https://youtu.be/ANSNhdlm_Ao Monitoring and Testing the Program https://accautomation.ca/brx-plc-monitoring-and-testing-the-program https://youtu.be/gv3d0vozxac Online Editing and Debug Mode https://accautomation.ca/brx-plc-online-editing-and-debug-mode https://youtu.be/77pemu3zXrE Timers https://accautomation.ca/brx-plc-timers https://youtu.be/0qU9kgunPi4 Counters https://accautomation.ca/brx-plc-counters https://youtu.be/k84VQy8ifgg High-Speed IO https://accautomation.ca/brx-plc-high-speed-io https://youtu.be/6B5hp_Ri0Ls Compare Instructions https://accautomation.ca/brx-plc-compare-instructions https://youtu.be/CIDVcM0zszE Math Instructions https://accautomation.ca/brx-plc-math-instructions https://youtu.be/ZllosAv0DyY Program Control https://accautomation.ca/brx-plc-program-control https://youtu.be/1fewvxxUyW4 Shifting Instructions https://accautomation.ca/brx-plc-shifting-instructions https://youtu.be/FVTxIl8VKmg Drum Instruction https://accautomation.ca/brx-plc-drum-instruction https://youtu.be/ILokPN1Aadk Serial Communication – Modbus RTU to Solo Process Temperature Controller https://accautomation.ca/brx-plc-serial-communication-modbus-rtu-to-solo-process-temperature-controller https://youtu.be/PndrIfBImGQ Data Logging https://accautomation.ca/brx-plc-data-logging https://youtu.be/OBv7XJ9mJeA Email – Text SMS Messaging Gmail https://accautomation.ca/brx-plc-email-text-sms-messaging-gmail https://youtu.be/0L74qOwwWAE Secure Email Communication https://youtu.be/hhVawCL3ztU AdvancedHMI Communication – Modbus TCP https://accautomation.ca/brx-plc-advancedhmi-communication-modbus-tcp https://youtu.be/1TjsdLwTKM0 Analog IO – System Configuration https://accautomation.ca/brx-plc-analog-io-system-configuration https://youtu.be/WmdbalWwO6E HTTP JSON Instructions https://accautomation.ca/brx-plc-http-json-instructions https://youtu.be/MrCt1STwILU Analog Dusk to Dawn Program https://accautomation.ca/brx-plc-analog-dusk-to-dawn-program https://youtu.be/7mNO7Lhq7y0 INC DEC 512 Registers for DMX512 https://accautomation.ca/brx-plc-inc-dec-512-registers-for-dmx512 https://youtu.be/jCGw9i6qbHk There are several reasons why we are using the BRX Series Controller. Here are just a few. - Standalone PLC with built-in I/O - Built-in Data Logging - Communication ability - Ethernet Port, RS232, RS485, USB - support for protocols such as Modbus RTU, Modbus TCP, ASCII, K-sequence (DirectLOGIC users), Custom Protocols (ASCII over serial, TCP or UDP over Ethernet) - Built-in Analog input and output - Integrated motion control - High-speed counters - Powerful instruction set (Video of Instructions in software) - Ability to expand the system with a variety of modules - Part of the Do-More series of PLCs which use the same free software. (Do-More Designer) - Integrated simulator in the software capable of external communications for testing The BRX series of programmable logic controllers consist of four different units. They differ depending on the Inputs and Outputs built into the unit and if it has the ethernet port. No I/O Micro PLC unit – (BX ME) 10 Point Micro PLC unit – (BX 10/10E) 18 Point Micro PLC unit - (BX 18/18E) 36 Point Micro PLC unit - (BX 36/36E) These CPUs (Central Processing Units) are also known as MPU (Multi-Processing Units) because of the communication capabilities. https://www.accautomation.ca