Version ZB040404 | 26-12-2025

1. Certification update: DRM3 and DRM7 updated for AU to output reactive power.
2. Fix: Optimise LoRa communications.
3. Fix: Correct meter data power factor value.
4. Fix: In parallel systems, load value previously reflected whole system instead of per inverter.
5. Fix: EPS logic optimisation when switching from Island Mode to On-Grid.
6. Fix: Optimise BMS error log data handling while in Off-Grid mode.
7. New feature: Add support for generator control.

Version ZB030303 | 16-06-2025

1. Optimise ECO mode to balance SOC during parallel operation.
2. Resolve parallel BMS upgrade issue.
3. Add backward compatibility for older SDM630 meters using FC 0x16.
4. Optimise operation with inductive (high inrush) loads while in Island Mode.
5. Add meter wiring detection function (see document: GIV-3HY-6~20K-HV Meter Wiring Detection Function SOP V1.0).

Version ZB020202 | 18-04-2025

1. Optimise inverter power derating logic under high-temperature conditions.
2. Start-up optimisation when both battery and PV are present: system boots on battery first, then engages PV.
3. Update overload logic: three overloads in 5 seconds or five in 1 minute triggers fault; inverter waits 1 minute and self-recovers. Three faults within 1 hour disables self-recovery and raises “OCP Times Excessive”.
4. Optimise fan self-test logic.
5. Include externally monitored PV (ID2 & ID3) in total PV energy calculations.
6. Parallel function optimisations.
7. Optimise AFCI sensitivity.
8. Improve parallel battery cluster calibration logic (requires BABA0007 or higher).
9. Add RTCL “Safe Registers” for Grid Service functions to reduce excessive flash memory writes.
10. Set default current limit to 100 A (disabled by default) with configurable range from 1–2000 A for commercial installations.
11. Add Czech grid standards.

Version ZB010101 | 01-02-2025

1. Initial factory release.