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vps1_gitea_admin edited this page 2026-03-04 21:01:27 +00:00
Table of Contents

Example Flows

The rotatingMachine node ships with three example flows, accessible in Node-RED via Import > Examples > EVOLV.

01 - Basic Manual Control

Dependencies: EVOLV package only (no dashboard needed)

Demonstrates all core rotatingMachine functionality using inject nodes:

  • Mode switching between auto, virtualControl, and fysicalControl
  • Startup/shutdown sequences with configurable timing (3s startup, 2s warmup, 3s shutdown, 2s cooldown)
  • Speed setpoint control at 30%, 60%, and 100%
  • Pressure simulation with upstream and downstream values
  • Emergency stop
  • Maintenance mode enter/leave

How to use

  1. Deploy the flow
  2. Click "Set virtualControl" to enable manual control
  3. Click "Startup" - observe the state transition (idle > starting > warmingup > operational) in the debug panel
  4. Click "Set 60%" to move to 60% speed
  5. Click "Sim downstream 1100 mbar" and "Sim upstream 200 mbar" to see flow/power predictions based on the pump curve
  6. Click "Shutdown" to stop

What to observe

  • Port 0 (Process Data): Shows state, mode, ctrl%, flow (m3/h), power (kW), NCog efficiency
  • Port 1 (InfluxDB): Disabled by default - enable the debug node to see telemetry format
  • Port 2 (Parent): Shows the registerChild message sent on deploy

Source: 01 - Basic Manual Control.json

02 - Integration with Machine Group

Dependencies: EVOLV package only (no dashboard needed)

Demonstrates parent-child registration between a machineGroupControl (MGC) and two rotatingMachine pumps.

  • Auto-registration: Both pumps register with the MGC via Port 2 on deploy
  • Independent control: Each pump can be started/stopped individually
  • Group aggregation: MGC Port 0 shows aggregated group state
  • Pressure simulation: Inject simulated pressure to Pump 1

How to use

  1. Deploy the flow - pumps automatically register with the MGC
  2. Set Pump 1 to virtualControl, then click Startup
  3. Set a speed setpoint (75%)
  4. Set Pump 2 to virtualControl and start it at 50%
  5. Observe the MGC debug output aggregating both pumps
  6. Inject downstream pressure on Pump 1 to see curve-based predictions

Wiring pattern

Pump 1 Port 2  ------>  MGC input (registerChild)
Pump 2 Port 2  ------>  MGC input (registerChild)

Source: 02 - Integration with Machine Group.json

03 - Dashboard Visualization

Dependencies: EVOLV + @flowfuse/node-red-dashboard

Interactive FlowFuse dashboard with:

  • Mode dropdown (auto / virtualControl / fysicalControl)
  • Startup / Shutdown / Emergency Stop buttons
  • Numeric speed setpoint input (0-100%)
  • Upstream and downstream pressure simulation inputs
  • Real-time line charts: Flow, Power, Control Position, NCog efficiency, State Code, Pressure (up/down/delta)
  • Text displays for current state, timing, and snapshot summary

How to use

  1. Make sure @flowfuse/node-red-dashboard is installed
  2. Deploy the flow
  3. Open the dashboard at /dashboard/rotating-machine-basic
  4. Use the controls on the left to operate the pump
  5. Watch the charts update in real-time on the right

Source: 03 - Dashboard Visualization.json