Edit the circuit plan

Once Reonic has generated the circuit plan from your planned components, you refine it here. There are two modes: Configure mode (Konfigurieren), a form-driven view where you add standard components, and free editing mode (Freier Bearbeitungsmodus), a drag-and-drop canvas that gives you full control over the layout. String layout itself, which modules sit on which MPP tracker, is set in the 3D editor's Strings mode, and the circuit plan draws that result. You can also make these edits with a natural-language prompt using Ask AI (Beta).

Before you start

• Generate the plan first, then open it.
• The offer must be a draft / unsigned variant. On a signed variant, the circuit plan is read-only.
• Change string-on-tracker assignment in the 3D editor's Strings mode, not here. The circuit plan renders the result.

Configure mode (default)

Configure mode (Konfigurieren) is the default. It is a form-driven sidebar rather than a canvas you draw on: add or remove standard components and set header details through toggles and lists in the left-side panel, and the diagram regenerates from those settings. The diagram structure (which inverter, how many strings, which MPP) follows the planned state, so you compose the components the panel offers rather than moving elements around. To move, rotate, or hand-draw elements on the canvas, switch to free editing mode (below).

Fill in the header form

A form on the left captures the diagram's title-block / header details: typically the system type, the preparer's name (shown in the footer), and company details pre-filled from the offer and your workspace, which you can override. The exact set of header fields varies, so check what your workspace shows.

To work without the header form, skip the fields and start with an empty title block. The diagram still generates with the planned components.

Add string components

Components on the DC side, attached to one or more strings.

1. In the left panel, open String components.
2. Pick the component: DC isolator, string fuse, or DC surge protector.
3. Enter a name and an optional description.
4. Click Save. The component appears on all strings by default and shows in the diagram legend.

For per-string variations, add the component then edit which strings carry it via the component detail.

Add inverter components

Components that sit directly at the inverter, on the DC side or AC side of the inverter depending on the component type.

1. In the left panel, open Inverter components.
2. Pick the component: AC surge protector, AC disconnect / Freischalter, or internal RCD module.
3. Enter a name and description.
4. Click Save. The component appears next to the inverter in the schematic.

Add bidirectional-counter components

Meters and energy-flow direction sensors live under one category, Bidirectional Counter Components.

1. In the left panel, open Bidirectional Counter Components. String, inverter, and bidirectional-counter are the three component areas; there is no separate "Meter components" category.
2. Pick the type: bidirectional meter / Zweirichtungszähler, feed-in / consumption meter, or energy-flow direction sensor.
3. Click Save. The meter lands at the appropriate point in the diagram, typically near the house connection.

The three component areas, String components, Inverter components, and Bidirectional Counter Components, each accept multiple components. Add a DC isolator and a string fuse on the same string, or an AC disconnect and a surge protector at the inverter. They stack in the diagram and appear individually in the legend.

Free editing mode

For full control, moving elements, drawing custom connections, and deleting auto-generated elements, switch to free editing mode (Freier Bearbeitungsmodus) at the top of the editor. Every element can be moved, rotated, deleted, or inserted individually, and the structural constraint (one inverter, three strings, two MPPs) is lifted, so you draw the diagram exactly as you want it to print.

Note: Configure mode and free editing mode keep their edits separately. If you do substantial free-mode work and then switch back to Configure mode, save a template first so you can restore your layout. Undo (Ctrl+Z) works in free editing mode; Configure-mode edits are form-driven and confirmed on save.

Drag elements from the library

1. On the left, open the Library.
2. Drag the element you need into the canvas: grounding point, junction box, generic component, or text box.
3. Drop it where it should sit.

Connect elements

1. Hover an element. Black connection points appear at its edges.
2. Click a connection point on element A, drag to a connection point on element B, and release.
3. A connector line draws between them. Click the line to edit its waypoints.

Move, rotate, group

• Move — click and drag any element.
• Rotate — select the element, then use the rotation handle.
• Duplicate a group — hold the mouse to mark a rectangular region, release to select the group, then duplicate or move it as a unit.
• Delete — select the element, then press Delete.

When to switch modes

Use Configure mode for typical residential systems where the auto-generated structure is correct and you only need to add standard components. Use free editing mode when the auto-generated diagram has the structure wrong (usually a sign the planned components need a fix, so correct the 3D plan first), when you want a custom layout for the customer-facing PDF, or when you're building a reusable template. Templates save from free editing mode.

Standard components — DC isolators, AC disconnect, meters

These are the components you add via the Configure-mode panel, or drag in from the library in free mode. Common patterns:

• DC isolator (Gleichstromschalter / DC-Trenner) — string-side, between the modules and the inverter. Required in most countries; position depends on local code.
• AC disconnect / AC switch (Freischalter / Lasttrennschalter) — between the inverter and the house connection. Often required by the grid operator for emergency cut-off.
• DC surge protector — at the inverter input or in the DC combiner box.
• AC surge protector — at the inverter output or in the consumer unit.
• Residual current device (RCD) — type B or type A+B depending on the inverter's leakage characteristics. Often integrated in the inverter; add it as a separate component only if your installation uses a discrete RCD.
• Bidirectional meter (Zweirichtungszähler) — at the grid edge, measures feed-in and consumption.
• Generation meter (Erzeugungszähler) — between the inverter and the consumer unit, measures total PV production.

Bring optimisers onto the diagram

Power optimisers (per-module DC-DC converters) are configured in the 3D editor's Strings mode and appear on the circuit plan as per-module optimiser symbols in the string detail. If the diagram doesn't show optimisers and you expect them:

1. Open the 3D editor and switch to Strings mode.
2. Select the string. Check that the Optimizer toggle is on for the relevant modules, and that an optimiser component is selected from the dropdown.
3. Click Save.
4. Return to the circuit plan. The optimiser symbols appear on the string.

The Optimizer toggle in Strings mode is also where partial optimisation lives: enable it only for the modules that carry an optimiser, leaving the rest unoptimised. The diagram then draws the optimiser between the module and the string conductor.

Battery wiring

When a battery is planned on the offer, the circuit plan adds it automatically from the planned components. In Configure mode, the Split batteries onto inverters toggle controls how batteries are distributed across multiple inverters. The two coupling patterns you'll see drawn:

• AC-coupled battery — wired into the AC bus between the inverter and the consumer unit, via its own battery inverter / hybrid inverter. The diagram shows the battery, its inverter, and the AC tie point.
• DC-coupled battery — wired to a hybrid inverter's battery input on the DC side. The diagram shows a single hybrid inverter handling both PV and battery on the DC side, with one AC output.

To change how a battery is drawn, change the inverter or battery component on the offer, then reopen the circuit plan.

Battery protective components: add protective devices around the battery the same way you add any other component, via the Configure-mode component lists or, for anything the standard palette doesn't cover, by dragging a generic element from the library in free editing mode and labelling it (for example an emergency-power changeover switch / Notstromumschalter for batteries that support island-mode / backup power). Follow local code for the DC isolator and AC-side protection your installation requires.

Wallbox / EVSE inclusion

Wallboxes (EV chargers) on the offer appear tied to the consumer side, between the consumer unit and the vehicle outlet: a single wallbox beside the consumer unit, and multiple wallboxes drawn in parallel. If a wallbox is on the offer but missing from the diagram, check that it's assigned to the current variant, has a valid component selection, and that you're on the latest saved state.

Warnings and how to fix them

Inline warnings on string-planning errors appear in the inverter overlay rather than as a separate report. The full catalogue of planning errors and warnings has its own page; this section covers the circuit-plan-specific ones.

Overcurrent / MPP tracker current warning

The string's total current exceeds the inverter's maximum current per MPP tracker, shown inline in the inverter overlay as "MPP Tracker current exceeded". Fix it in the 3D editor's Strings mode by splitting the string into two shorter strings (paralleled on the same tracker or on different trackers), picking a different inverter with a higher per-MPP current rating, or removing modules from the string. The circuit plan reflects the resolved state once the 3D editor is saved.

This is also why you get an error when you consolidate modules from two trackers onto one inverter input: the merged string then exceeds the tracker's max string current or breaks orientation/voltage matching. Stay within the tracker's max-current rating and keep string orientation consistent across the strings on that tracker.

"Modules have different orientation"

The orientation-mismatch warning "Modules have different orientation" and the current-exceeded warning are two separate checks. Verify both conditions independently: check the orientation per module, and check the inverter's max current against the sum of string-level currents. An orientation message does not mean the current warning is mislabelled.

MPPT mismatch warning

A string is assigned to an MPP tracker, but its module count, orientation, or tilt mix doesn't match the tracker's other strings. Either move the string to a separate MPP tracker so each carries homogeneous strings, or accept the mismatch when it works hardware-wise: two south-facing strings of different lengths on one tracker is fine; mixed tilts on one tracker are suboptimal but work. Mixed tilts on the same tracker produce real production loss, since the tracker follows the lowest-producing module's curve.

The string-configuration option is greyed out

The string-configuration option in the 3D editor's Strings mode becomes active once an inverter is selected on the variant, because the MPP tracker layout depends on the inverter's tracker count. If it's deactivated, check that the variant has an inverter chosen and modules placed in the 3D editor, and that the offer is in an editable status. A signed or otherwise locked offer also disables it, so create a new variant to edit.

Missing component in the diagram

A component you planned on the offer isn't showing. Common causes: it's on a different variant (check you're on the right one), it isn't valid yet (a wallbox with no model picked, or a battery with no inverter compatibility resolved, so open it on the Planning view and confirm it's complete), or you're looking at a stale state (save the offer, then close and reopen the circuit plan).

The diagram is wrong and Configure mode won't fix it

Switch to free editing mode. Every element becomes individually movable, deletable, and re-connectable. If you find yourself doing this often, build a template that captures the layout you want and import it on future projects.

Per-country wiring standards

Country-specific conventions (DIN-VDE for Germany, ÖVE for Austria, NEN for the Netherlands, NF C for France, BS 7671 for the UK, CEI for Italy) drive which protective devices are required, where meters sit, and how RCD selectivity is configured. The editor draws what you compose, so component selection is the installer's responsibility: pick the DC isolator, AC disconnect, RCD type, and surge protector class local code requires. Most generic-IEC schematic symbols work across European markets; where local conventions differ, use the closest library element and add a text annotation.

Things to know

• The legend lists every component you added. Customers and grid operators read the legend, so name your components clearly.
• Multi-inverter systems are supported. Add a second inverter in the 3D editor's Strings mode; the circuit plan renders both with their AC outputs joining at the consumer unit. If a layout overlaps, free editing mode lets you arrange it cleanly.
• Energy-flow direction sensors (Stromflussrichtungssensoren) are added as a Bidirectional meter type, separate from the standard feed-in / consumption meters.
• Heat pumps can be shown on the circuit plan via the Heating system (heat pump) toggle in Configure mode (availability depends on your plan). When shown, the heat pump is drawn as an AC-side consumption load, and it also appears in the energy-flow simulation.
• Component selection follows local code. The editor draws what you compose, so reconcile against the local checklist before grid submission.

Need help?

• Step-by-step questions about this flow → contact your Reonic account manager.
• Feature requests / something missing → drop a note to your account manager.
• Bug reports → include a screenshot and the URL where it happened in your support email.

Last updated on August 4, 2026