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Validation

Run and triage ERC

Run the electrical rules check on a schematic, fix or exclude each finding, and re-run until it is clean.

Intermediate10 min to completeUpdated 2026-09-19
What you will accomplish

An ERC result where every remaining finding is one you have looked at and accepted.

Before you start

  • A saved schematic

Applies to: Resin web app

Follow the steps

  1. 1

    Run ERC

    In the Schematics tab, choose ERC in the toolbar, or right-click empty canvas and choose Run ERC.... The results panel opens and shows Running ERC... until the check finishes.

    Schematics > ERC

    Expected result

    The panel shows All checks passed or a list of findings with Errors, Warnings, and Info counts.

  2. 2

    Open each finding

    Click a finding to select the object it refers to on the canvas. Use Group by element or Flat list to change how the list is organised. Typical findings: a pin with nothing connected, two outputs driving one net, a label used once, a power pin with no power source.

    ERC panel

    Expected result

    You know what each finding refers to.

  3. 3

    Fix real problems

    Correct wiring, labels, or symbol pin types on the canvas. A wire that stops short of a pin is the most common cause of unconnected-pin errors. Save when done.

    Schematic canvas

    Expected result

    Each edit corresponds to a finding you intend to clear.

  4. 4

    Waive intended conditions

    A finding that describes something you intend, such as an unused pin, can be waived: open the finding's menu and choose Waive this violation. Waived findings move to Waived (n) so they stay visible and do not count as errors.

    ERC panel

    Expected result

    Every remaining finding is either fixed or waived on purpose.

  5. 5

    Re-run and compare

    Choose Re-run. The counts should drop by the findings you fixed and nothing new should appear. Use Export Report to keep a copy of the result.

    ERC panel > Re-run

    Expected result

    Errors are zero and the remaining warnings are ones you have reviewed.

Check your result

  • ERC run
  • Every finding opened
  • Fixes made on the canvas
  • Intended conditions waived
  • Re-run shows no new findings

Example files

Complete ERC and DRC report set

JSON / 6 runs / 241 findings · Published evidence record

Machine-readable output from four compact-fixture DRC runs and two schematic ERC runs, tied to exact source records.

Covers the published runs only; it does not include a corrected-and-rerun schematic case.

Check-run summary

CSV / 6 runs · Published evidence record

Flat summary of source identity, check type, severity totals, and run disposition for the published cases.

Aggregate totals only; open the finding-level export for root-cause detail.

Troubleshooting

Find the symptom, apply the fix, and repeat the affected check.

ERC is not in the toolbar

No schematic is open, or the project is read-only for your account.

The results look stale

The panel keeps the last result until you Re-run. Save and choose Re-run after editing.

A finding points at the wrong object

Check which sheet is active. Findings on other sheets select an object there when you click them.

A finding disappeared after an unrelated edit

Undo the edit and re-run. Findings should only clear when you fix their cause.

ERC is clean but the circuit is wrong

ERC checks connectivity rules only. It does not check values, ratings, or whether the circuit does what you need.