For the project solution it was decided to use a Horner Automation controller, specifically an OCS from the Micro Series. An X4 was chosen due to the required size. We decided to use this equipment because it has digital inputs, analog inputs, digital outputs, HSC, a 4” touch screen and an ethernet port for remote control and remote data extraction, as well as a slot for a microSD card to extract the data physically.
The Cscape software was used to design the HMI interface in which it shows the numerical data, the graphs, and a visual representation of the process. Cscape was also used to program the PLC in Advanced Ladder. With this, the function logic that was implemented was intended to activate or deactivate the digital outputs depending on what is being read in the digital and analog inputs.
The fluid sensors were connected to the HSC. This was configured in frequency and in this way, by adding a mathematical relationship from Hz to L/s, the accumulated and instantaneous fluid could be represented. By configuring the analog inputs as 4-20mA, data is recorded as counts from 0-32,000, adding a scaling function that could represent water level and supply pressure values.
Thanks to the datalogging and alarms function of the controller, historical archives of the process can be created. Also, the WebMI function of Horner Automation offers remote control.