Yaskawa A1000 22 kW DB1–DB5 Drawing Family

Five-sheet record and what it reveals

The reviewed sheets are labelled AB4A0044FAA (A1000-22KW) DB1 through DB5. DB1 depicts a regulated auxiliary converter with optical feedback, transformer-isolated rails and +24 V support for peripheral functions. DB3 adds scaled voltage-monitoring and fan/connector relationships. DB4 maps CT1, CT2 and CT3 through conditioning channels supplied by ±15 V and compared against a reference path.

This degree of internal evidence supports a real database page: it tells the technician whether a fault investigation concerns energy supply to driver sections, output feedback/protection logic or external power/load circuitry.

Drawing-to-page relationship

Practical restriction

A technician must not assume that a drawing labelled for 22 kW automatically matches every regional A1000 variant, revision or replacement board. Confirm nameplate, connector and board identifiers. The database records functional landmarks and connects them to a safe investigation sequence; it does not replace controlled board-level validation.

Why the record has commercial value

A repair centre can act on a request that distinguishes a true shorted output stage from a suspected supply/feedback issue. Board photographs, fault trace, isolation result and observed supply/channel symmetry make a repair quotation more credible and reduce repeated destructive repair cycles.

Five-sheet functional map

The reviewed A1000-22KW drawing set separates useful functional regions. The first sheet shows a transformer/feedback-controlled multi-rail supply with isolated and control-voltage outputs. Other sheets expose scaled DC/phase measurements, fan and connector relationships, and CT/current-feedback conditioning with comparator/reference circuitry. These are the areas most relevant to protection trips that remain after external causes have been excluded.

The database does not treat the drawing package as a downloadable manual. It converts the evidence into relationships: which board zone supports gate operation, which supports measurement/protection, and which fault symptom creates a reason to examine that zone. This protects the value of the technical archive while producing usable public diagnostic content.

Use channel and reference comparisons before assigning a failed board

The examined A1000 22 kW drawings expose more than one functional area: isolated low-voltage supply generation, phase and DC-bus scaling networks, CT-based current feedback and comparator/reference sections. A protection trip can therefore be created by the output power stage, by a damaged gate supply, by feedback/protection circuitry or by an external motor/cable condition. It is not safe to jump from an SC or GF display directly to one board replacement.

For assessment, preserve board identifiers and connector orientation, compare equivalent phase paths, document supply/reference behaviour under isolated diagnostic conditions and keep the fault history before clearing it. These observations allow a repair centre to decide whether the likely work concerns the power module, driver/supply area, measurement/protection layer or the external circuit.

What constitutes repair-ready evidence

An A1000 board case is repair-ready only when the model and capacity are confirmed, the exact display and fault history are recorded, the motor and cable branch has been assessed by qualified personnel, and the visible board/module condition is documented. Without these items, a spare-board request can be the wrong commercial outcome.

IndustrialDriveData records this as a board-and-diagnostic relationship rather than offering a dangerous generic “replace the IGBT” instruction. The service value lies in narrowing the root-cause branch and helping an owner present a defensible repair or replacement inquiry.