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GUI: I limit field is the environment input-current limit, no hardcoded 20A

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The 20A PSU ceiling was hardcoded and clamped user entries, which breaks
benches with a different supply. Now the sweep I limit field IS the max
input current allowed for the test environment: used verbatim as the
supply CC limit and as the step-rejection / measured-backstop ceiling.
Manual supply-current clamp removed; manual CC/CP load gate now checks
against the I limit field value. PSU_MAX_CURRENT_A is reduced to
INPUT_LIMIT_DEFAULT_A (initial field value only).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
janik
2026-07-06 12:53:44 +07:00
co-authored by Claude Fable 5
parent 7f8672d7b9
commit 668ce30a1d
2 changed files with 32 additions and 41 deletions
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README.md
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@@ -97,14 +97,15 @@ The GUI provides:
launch auto-starts a log at `logs/data_<timestamp>.csv` (relative to the
working directory); use Stop Log / Start Log to switch to a custom path
- Console log panel (STM32 fault flags are reported here as they latch)
- PSU capability guard: the HV supply can source at most 20 A
(`PSU_MAX_CURRENT_A` in `gui.py`). Sweep steps whose estimated input draw
`I_in = P_out / (0.90 * V_in)` exceeds that are rejected (skipped and
- Input-current guard: the sweep "I limit" field is the maximum input
current allowed for the test environment (set it to whatever the PSU on
the bench can source; defaults to 20 A, no hardcoded ceiling). It is
programmed as the supply CC limit, and sweep steps whose estimated input
draw `I_in = P_out / (0.90 * V_in)` exceeds it are rejected (skipped and
reported per voltage), regardless of the requested step range; a measured
backstop additionally drops any point where the supply actually exceeded
the limit and backs the load off. The programmed supply current limit
(sweep "I limit" field and manual supply controls) is clamped to 20 A, and
manual CC/CP load setpoints are checked against live Vin/Vout readings.
the limit and backs the load off. Manual CC/CP load setpoints are checked
against the same limit using live Vin/Vout readings.
- Load range pinning: a mid-sweep auto-range transition on the Prodigit
momentarily unloads the converter, so at sweep start the CC range is
pinned to Range II for the whole run (auto-ranging restored after, with