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pumpingStation/wiki/diagrams/control-zones.drawio.svg
znetsixe 61e0688f73 Make starter SVG diagrams round-trippable in draw.io 
Each <name>.drawio.svg now has the corresponding <name>.drawio XML
embedded as content="..." on the root <svg> element. Opening the
SVG in draw.io (File → Open, or drag-drop) loads the full editable
model — no need to keep the .drawio file around for editing.

Updated diagrams/README.md to reflect that both file formats are
now round-trippable from the start.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-22 13:00:16 +02:00

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 700 660" font-family="Arial, sans-serif" font-size="13" content="&lt;mxfile host=&quot;app.diagrams.net&quot; modified=&quot;2026-04-22T12:00:00.000Z&quot; agent=&quot;Claude Code placeholder&quot; etag=&quot;initial&quot; version=&quot;22.0.0&quot; type=&quot;device&quot;&gt;
&lt;diagram name=&quot;control-zones&quot; id=&quot;controlZones&quot;&gt;
&lt;mxGraphModel dx=&quot;1000&quot; dy=&quot;800&quot; grid=&quot;1&quot; gridSize=&quot;10&quot; guides=&quot;1&quot; tooltips=&quot;1&quot; connect=&quot;1&quot; arrows=&quot;1&quot; fold=&quot;1&quot; page=&quot;1&quot; pageScale=&quot;1&quot; pageWidth=&quot;700&quot; pageHeight=&quot;800&quot; math=&quot;0&quot; shadow=&quot;0&quot;&gt;
&lt;root&gt;
&lt;mxCell id=&quot;0&quot; /&gt;
&lt;mxCell id=&quot;1&quot; parent=&quot;0&quot; /&gt;
&lt;mxCell id=&quot;title&quot; value=&quot;levelbased mode — three zones&quot; style=&quot;text;html=1;fontSize=16;fontStyle=1;align=center;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;100&quot; y=&quot;20&quot; width=&quot;500&quot; height=&quot;30&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;axis&quot; value=&quot;&quot; style=&quot;endArrow=classic;html=1;strokeColor=#000;strokeWidth=2;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
&lt;mxPoint x=&quot;280&quot; y=&quot;600&quot; as=&quot;sourcePoint&quot; /&gt;
&lt;mxPoint x=&quot;280&quot; y=&quot;80&quot; as=&quot;targetPoint&quot; /&gt;
&lt;/mxGeometry&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;axis_label&quot; value=&quot;level&quot; style=&quot;text;html=1;fontSize=13;fontStyle=1;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;240&quot; y=&quot;60&quot; width=&quot;50&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;overflow&quot; value=&quot;heightOverflow — weir crest (spill → measure)&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#B22222;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;130&quot; width=&quot;380&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;overflow_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#B22222;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
&lt;mxPoint x=&quot;270&quot; y=&quot;140&quot; as=&quot;sourcePoint&quot; /&gt;
&lt;mxPoint x=&quot;290&quot; y=&quot;140&quot; as=&quot;targetPoint&quot; /&gt;
&lt;/mxGeometry&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;run_band&quot; value=&quot;RUN — linear 0 → 100 %&quot; style=&quot;rounded=0;whiteSpace=wrap;html=1;fillColor=#E8F5E9;strokeColor=#1E8449;fontSize=12;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;160&quot; width=&quot;220&quot; height=&quot;110&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;maxflow&quot; value=&quot;maxFlowLevel — 100 % demand&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#D68910;fontStyle=1;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;265&quot; width=&quot;300&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;maxflow_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#D68910;strokeWidth=2;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
&lt;mxPoint x=&quot;265&quot; y=&quot;275&quot; as=&quot;sourcePoint&quot; /&gt;
&lt;mxPoint x=&quot;295&quot; y=&quot;275&quot; as=&quot;targetPoint&quot; /&gt;
&lt;/mxGeometry&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;ramp_label&quot; value=&quot;(ramp — demand scales linearly with level)&quot; style=&quot;text;html=1;fontSize=11;align=left;fontStyle=2;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;300&quot; width=&quot;320&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;startlevel&quot; value=&quot;startLevel — 0 % demand (ramp starts)&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#1E8449;fontStyle=1;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;335&quot; width=&quot;340&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;start_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#1E8449;strokeWidth=2;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
&lt;mxPoint x=&quot;265&quot; y=&quot;345&quot; as=&quot;sourcePoint&quot; /&gt;
&lt;mxPoint x=&quot;295&quot; y=&quot;345&quot; as=&quot;targetPoint&quot; /&gt;
&lt;/mxGeometry&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;dead_band&quot; value=&quot;DEAD ZONE — hysteresis, keep last cmd&quot; style=&quot;rounded=0;whiteSpace=wrap;html=1;fillColor=#FFF8E1;strokeColor=#F57C00;fontSize=12;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;360&quot; width=&quot;220&quot; height=&quot;80&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;inlet&quot; value=&quot;heightInlet — inflow pipe&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#1F4E79;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;395&quot; width=&quot;300&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;inlet_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#1F4E79;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
&lt;mxPoint x=&quot;270&quot; y=&quot;405&quot; as=&quot;sourcePoint&quot; /&gt;
&lt;mxPoint x=&quot;290&quot; y=&quot;405&quot; as=&quot;targetPoint&quot; /&gt;
&lt;/mxGeometry&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;stoplevel&quot; value=&quot;stopLevel — unconditional STOP&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#6C3483;fontStyle=1;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;440&quot; width=&quot;300&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;stop_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#6C3483;strokeWidth=2;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
&lt;mxPoint x=&quot;265&quot; y=&quot;450&quot; as=&quot;sourcePoint&quot; /&gt;
&lt;mxPoint x=&quot;295&quot; y=&quot;450&quot; as=&quot;targetPoint&quot; /&gt;
&lt;/mxGeometry&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;stop_band&quot; value=&quot;pumps OFF (MGC shutdown)&quot; style=&quot;rounded=0;whiteSpace=wrap;html=1;fillColor=#F4ECF7;strokeColor=#6C3483;fontSize=12;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;465&quot; width=&quot;220&quot; height=&quot;80&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;outlet&quot; value=&quot;heightOutlet — outflow pipe (dry-run trip here)&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#B22222;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;510&quot; width=&quot;360&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;outlet_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#B22222;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
&lt;mxPoint x=&quot;270&quot; y=&quot;520&quot; as=&quot;sourcePoint&quot; /&gt;
&lt;mxPoint x=&quot;290&quot; y=&quot;520&quot; as=&quot;targetPoint&quot; /&gt;
&lt;/mxGeometry&gt;
&lt;/mxCell&gt;
&lt;mxCell id=&quot;floor&quot; value=&quot;0 (floor)&quot; style=&quot;text;html=1;fontSize=11;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
&lt;mxGeometry x=&quot;300&quot; y=&quot;580&quot; width=&quot;60&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
&lt;/mxCell&gt;
&lt;/root&gt;
&lt;/mxGraphModel&gt;
&lt;/diagram&gt;
&lt;/mxfile&gt;">
<title>levelbased mode — three zones</title>
<defs>
<marker id="arr" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="8" markerHeight="8" orient="auto-start-reverse">
<path d="M 0 0 L 10 5 L 0 10 z" fill="#000" />
</marker>
</defs>
<text x="350" y="30" text-anchor="middle" font-weight="bold" font-size="16">levelbased mode — three zones</text>
<!-- Vertical level axis -->
<line x1="280" y1="600" x2="280" y2="80" stroke="#000" stroke-width="2" marker-end="url(#arr)" />
<text x="260" y="75" text-anchor="end" font-weight="bold" font-size="13">level</text>
<!-- heightOverflow -->
<line x1="270" y1="140" x2="290" y2="140" stroke="#B22222" stroke-width="2" />
<text x="300" y="144" fill="#B22222" font-size="12">heightOverflow — weir crest (spill → measure)</text>
<!-- RUN band -->
<rect x="300" y="160" width="240" height="110" fill="#E8F5E9" stroke="#1E8449" />
<text x="420" y="220" text-anchor="middle" font-size="13" fill="#1E8449" font-weight="bold">RUN</text>
<text x="420" y="238" text-anchor="middle" font-size="12" fill="#1E8449">linear 0 → 100 %</text>
<!-- maxFlowLevel -->
<line x1="265" y1="275" x2="295" y2="275" stroke="#D68910" stroke-width="3" />
<text x="305" y="279" fill="#D68910" font-size="12" font-weight="bold">maxFlowLevel — 100 % demand</text>
<!-- Ramp label -->
<text x="305" y="314" font-size="11" font-style="italic">(ramp — demand scales linearly with level)</text>
<!-- startLevel -->
<line x1="265" y1="345" x2="295" y2="345" stroke="#1E8449" stroke-width="3" />
<text x="305" y="349" fill="#1E8449" font-size="12" font-weight="bold">startLevel — 0 % demand (ramp starts)</text>
<!-- DEAD ZONE band -->
<rect x="300" y="360" width="240" height="80" fill="#FFF8E1" stroke="#F57C00" />
<text x="420" y="390" text-anchor="middle" font-size="13" fill="#B78200" font-weight="bold">DEAD ZONE</text>
<text x="420" y="408" text-anchor="middle" font-size="12" fill="#B78200">hysteresis — keep last cmd</text>
<!-- heightInlet (inside dead zone) -->
<line x1="270" y1="405" x2="290" y2="405" stroke="#1F4E79" stroke-width="2" />
<text x="550" y="409" fill="#1F4E79" font-size="12">heightInlet</text>
<!-- stopLevel -->
<line x1="265" y1="450" x2="295" y2="450" stroke="#6C3483" stroke-width="3" />
<text x="305" y="454" fill="#6C3483" font-size="12" font-weight="bold">stopLevel — unconditional STOP</text>
<!-- STOP band -->
<rect x="300" y="465" width="240" height="80" fill="#F4ECF7" stroke="#6C3483" />
<text x="420" y="500" text-anchor="middle" font-size="13" fill="#6C3483" font-weight="bold">pumps OFF</text>
<text x="420" y="518" text-anchor="middle" font-size="12" fill="#6C3483">(MGC shutdown)</text>
<!-- heightOutlet -->
<line x1="270" y1="540" x2="290" y2="540" stroke="#B22222" stroke-width="2" />
<text x="305" y="544" fill="#B22222" font-size="12">heightOutlet — outflow pipe (dry-run trip)</text>
<!-- floor -->
<line x1="265" y1="600" x2="295" y2="600" stroke="#000" stroke-width="2" />
<text x="305" y="604" font-size="11">0 (floor)</text>
</svg>
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