Schneider EAV42257-00 IGBT Power Board – New Original ATV600 30–45 kW

What Is the EAV42257-00 IGBT Power Module Board?

The Schneider EAV42257-00 is the inverter power board (Bottom Drive Power Board) used in Altivar ATV610, ATV630, and ATV930 drives in the 30–45 kW range. It carries the IGBT power modules that convert the DC bus voltage into the variable-frequency AC output feeding the motor. In the ATV600/900 power architecture, this board sits at the final power-conversion stage — downstream of the DC bus and upstream of the motor terminals.

This is a power-stage component, not a Control Unit or I/O board. Supplied as New Original stock, it is intended for cases where the original power board has been confirmed faulty, or where IGBT short-circuit / output-stage failure has been isolated after external causes have been excluded.

Technical Specifications

Important Diagnostic Boundary: SCF4 is defined by Schneider as “IGBT short circuit,” but the probable cause can be power-component detection error, not necessarily a physically failed IGBT module. In field cases, SCF1/SCF4 combined with InF/INFR has been traced to an I/O board connector that was partially unseated during reassembly. OCF and InF can also originate from motor cable insulation failure, incorrect motor parameters, or a damaged gate-drive path — all of which must be excluded before the power board is replaced.

When to Investigate or Replace the EAV42257-00 Board

The board becomes a legitimate suspect under these conditions, after external causes have been excluded:

• SCF4 (IGBT short circuit) with motor cables disconnected — if the fault persists after disconnecting the motor leads, the short is internal to the drive, pointing toward the IGBT power board rather than the motor or cable.
• OCF (overcurrent) with verified motor parameters and no mechanical jam — acceleration ramp, load inertia, and motor nameplate data should be checked first. If OCF persists with correct settings and a free-running load, the power stage should be inspected.
• InF / INFR (internal fault) after reseating all control and I/O connectors — an unseated I/O board connector has produced InF/INFR in ATV610 field cases; confirm all plugs are fully latched before concluding the power board is faulty.
• Visible damage on the IGBT module or board — burn marks, cracks, or discoloration on the power board.

Caution: Before ordering, confirm that the motor cable insulation has been tested, the I/O board and ribbon connectors are fully seated, and the motor parameters match the nameplate. These checks resolve a significant share of SCF/OCF/InF trips without replacing the power board.

Compatibility & Verification

Before ordering, confirm the following:

• Drive MLFB — the exact ATV610/630/930 catalogue number on the nameplate. The 30–45 kW range may span different power frames; board fitment is frame-dependent.
• Original board marking — confirm the existing board reads EAV42257-00. A related number EAV42257_01 appears in spare-parts channels; do not assume equivalence without verifying the drive MLFB.
• Condition expectation — this listing is New Original, not a tested pulled unit. Confirm your procurement requirement before ordering.
• If uncertain, send a photo of the drive nameplate and the original power board label for review before purchase.

Frequently Asked Questions

Is EAV42257-00 a control board or a power board?

It is a power board (IGBT power module board). It handles DC-to-AC power conversion, not drive control logic or I/O signal interfacing.

Does SCF4 always mean the IGBT power board is faulty?

No. SCF4 indicates IGBT short circuit detection, but Schneider lists power-component detection error as a probable cause. An unseated I/O board connector has also produced combined SCF/InF faults in field cases. Confirm connectors and motor cables before replacing the board.

Is this the same as EAV42257_01?

EAV42257_01 appears as a related number in spare-parts listings, but equivalence should be verified against the drive MLFB and the original board label before ordering. Do not assume a direct drop-in replacement without confirmation.