noise
76765a95ed
Discovered live 2026-06-25 driving an actual grid calibration: forcing a full grid charge is done via OUTPUT PRIORITY, not voltage thresholds. - SBU (everyday) won't grid-charge unless the bank is critically low; setting charger_priority=solar_and_utility alone does nothing at 52V. - SUB (output_priority=solar_utility_battery) runs loads on grid AND charges the battery to full. Combined with charger_priority=solar_and_utility, grid charging engages (device_mode->Hybrid/Line, line_dir->input, pack current jumps to ~120A). - Both POP/PCP set via lvx-control (all-mode-safe, atomic, no flash/USB). Revert POP->solar_battery_utility, PCP->solar_first when done. The re_discharge/flash.py approach is dead (firmware NAKs stop_charge>float); profile eg4-lp4-v2-calibration.yaml marked DEPRECATED. - grid-cal-monitor: supervises a SUB grid charge, safety aborts (cell>3.60V/ temp>45C), detects re-anchor (all 6 packs ->100%), auto-reverts POP+PCP (trap). - calibration-charge skill §3 rewritten to the POP lever. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
68 lines
3.6 KiB
YAML
68 lines
3.6 KiB
YAML
# LVX6048 settings profile — TEMPORARY calibration charge for the EG4 LP4 v2 bank.
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#
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# Purpose: re-anchor drifted EG4 pack SoC counters (and top-balance) by letting the
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# bank reach a FULL charge with absorption hold. The EG4 BMS resets SoC to 100% only
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# on a real full-charge termination (high cell voltage + low taper current); the
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# conservative everyday profile stops grid charging at 54.0 V (mid-knee), so on cloudy
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# / high-load stretches the bank may go weeks without a full charge and the coulomb
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# counters drift (e.g. pack 6 read 76% while physically at ~53% on 2026-06-24).
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#
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# !!! DEPRECATED 2026-06-25 — DO NOT USE. The re_discharge lever does not work for
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# grid calibration: firmware NAKs stop_charge_voltage above float (56 > 54), and it's
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# the wrong mechanism anyway. The CORRECT grid-charge lever is output priority -> SUB
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# (solar_utility_battery) via lvx-control — see the calibration-charge skill §3 and
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# memory project_lvx6048_grid_charge_lever. Kept only as a record of the dead end.
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#
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# !!! 2026-06-24 FINDING — grid-assist lever corrected, still UNVALIDATED !!!
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# The original idea (stop_charge_voltage: 0 = "Full") was REJECTED by the firmware:
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# `flash.py apply` got an inverter NAK on `BUCD480,000` on BOTH units (no change made).
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# The field flash.py calls `stop_charge_voltage` is really the inverter's
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# **battery_re_discharge_voltage** (HA: sensor.lvx6048_*_battery_re_discharge_voltage) —
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# the voltage at which the inverter switches loads back to battery after grid charging.
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# At 54.0 V, grid tops the bank only to ~54 V. Raising it (below) lets grid charge
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# higher, BUT it may band-oscillate near the setpoint rather than hold a clean
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# absorption, so it's NOT guaranteed to give the full-charge termination the BMS needs
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# to re-anchor. SOLAR-ONLY is the known-good method (solar follows the full CC/CV curve
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# to bulk + absorption); use this grid profile only as a supervised experiment.
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#
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# Corrected (candidate) change vs canonical: stop_charge_voltage 54.0 -> 56.0 (was 0).
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# bulk_voltage stays 56.4 (absorption target).
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#
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# USE: this is a TEMPORARY profile driven by the `calibration-charge` skill. Apply to
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# BOTH inverters, run the full charge, verify all 6 packs hit 100%, then REVERT to
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# eg4-lp4-v2.yaml. Do not leave this profile applied — it removes the everyday
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# grid-charge ceiling.
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#
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# sudo systemctl stop powermon.service powermon2.service
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# ./flash.py apply --device /dev/lvx6048-1 --profile profiles/eg4-lp4-v2-calibration.yaml --confirm
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# ./flash.py apply --device /dev/lvx6048-2 --profile profiles/eg4-lp4-v2-calibration.yaml --confirm
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# ./flash.py compare --device-a /dev/lvx6048-1 --device-b /dev/lvx6048-2
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# sudo systemctl start powermon.service powermon2.service
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# # ... drive + verify the charge (see calibration-charge skill) ...
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# # REVERT when all packs read 100%:
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# sudo systemctl stop powermon.service powermon2.service
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# ./flash.py apply --device /dev/lvx6048-1 --profile profiles/eg4-lp4-v2.yaml --confirm
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# ./flash.py apply --device /dev/lvx6048-2 --profile profiles/eg4-lp4-v2.yaml --confirm
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# sudo systemctl start powermon.service powermon2.service
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battery_type: USER
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cutoff_voltage: 48.0
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stop_discharge_voltage: 48.0
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# re-discharge voltage. 54.0 (canonical) tops grid charge to ~54 V; 56.0 lets grid
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# charge higher. NOT 0 — firmware NAKs 0/"Full". Range 48.0..58.0. UNVALIDATED lever.
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stop_charge_voltage: 56.0
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bulk_voltage: 56.4
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float_voltage: 54.0
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max_charging_current: 60
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max_utility_charging_current: 30
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output_source_priority: solar_battery_utility
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charger_priority: solar_first
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solar_power_priority: battery_load_utility_ac
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grid_tie: disabled
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