Advanced Engine Room Ventilation Control System

Engine room ventilation control via 4 frequency control drives (VFD) controlled by NodeRED over Modbus RTU protocol to achieve preset overpressure value. Values for outside pressure, engine room pressure and engine room temperature are received from separate 4-20 mA sensors. - VFD, settings and modbus connections to be in a subflow for reusability - logging of data in a csv file - MQTT exporting of data as per spec attached - VFD is Fuji Electric FRN22AR1M-4E Operating manual and RS485 spec will be provided Modbus RTU addresses for the commands will be provided - sensors will be 4-20mA, one temperature sensor and 2 barometric sensors - one outside atmospheric pressure and one inside engine room pressure + barometric pressure sensors: [login to view URL] - NodeRED will run on RevPi Connect 4 with sensors connected to RevPi AIO: [login to view URL] [login to view URL] [login to view URL] - engine room overpressure value to be controlled by PID node (possibly node-red-contrib-easy-pid-controller node) - ideas about Dashboard groups (based on @flowfuse/node-red-dashboard) + screen size 800x480px based on Schneider Electric Harmony STW6 7 inch web browser based display + dashboard group with 2 widgets > one widget for general system settings and parameters * Mode (Auto/Manual) - button group * System health (reading) - if any VFD has error or issue * engine room temperature (reading) * engine room overpressure (reading) * Total load of all fans in a half-gauge 0-100% > one widget showing general parameters of each fan * Speed setting in a half-gauge 0-100% * Frequency in a half-gauge 0-50Hz * Link to open fan details page + group for each fan with control and operation details. groups to be "view only" in case "auto" mode for the system > one widget for manual control (fans 1 and 4 are non-reversible, fan 2 and 3 are reversible) * Supply button - start fan in supply mode (for fan 2+3) * Exhaust button - start fan in exhaust mode (for fan 2+3) * Start button - start fan (for fan 1+4) * Stop button - stop fan * slidebar for setting speed (0 - 100 %) > one widget for operation details * operating mode (supply / exhaust / error) * Speed setting in a half-gauge 0-100% * Frequency in a half-gauge 0-50Hz * Current in a half-gauge 0-42A (will advise actual max) + group for settings possibly with password protection > one widget for PID settings * SV - engine room overpressure (setting) * KP (Proportional Gain) - injects the value in the PID node * KD (Derivative Gain) - injects the value in the PID node * KI (Integral Gain) - injects the value in the PID node * dt (Sampling time) - injects the value in the PID node * possibly more to be added > one widget for MQTT settings * IP address, and port of the MQTT broker * TagCodes for each parameter sent in the report as per specification * reporting interval > possibly other widgets

Project ID: 39195818