Schneider VX4A71101Y Control Board Kit – ATV71 Frame 9–15 Tested

When This Kit Is the Suspect

• InF1 (Rating error) — the power card does not match the stored configuration. If the power board is confirmed correct for the drive MLFB, the control board’s stored rating data may be corrupted.
• InF2 (Incompatible power board) — the power card is detected as incompatible with the control card. Confirm the power board model first; if it matches the drive nameplate, this control kit is the relevant replacement.
• InF3 (Internal serial link) — communication fault between internal cards (control, power, and option). Reseat all ribbon connectors before replacing the kit.
• InF4 (Internal manufacturing zone) — incoherent internal data on the EEPROM. Schneider’s official resolution includes recalibration via the diagnostic menu (field service level) or changing the control block. If recalibration is unavailable, this kit is the replacement target.
• InF6 (Option fault) — an option card installed in the drive is not recognized. Reseat the option card first; if it persists with no option installed, the control kit should be inspected.
• InFE (Internal CPU) — internal microprocessor fault. This directly points to the CPU section of the control kit.

Compatibility Check

Before ordering, confirm:

• Drive series — must be ATV71. ATV61 uses VX4A61101Y, which is not interchangeable.
• Frame size — must be Frame 9–15 (≥ 90 kW). Frame 8 and below uses VX4A71100Y.
• Original kit marking — confirm the existing control assembly corresponds to VX4A71101Y.
• If unsure, send a photo of the original board label and the drive nameplate before purchase.

FAQ

Is VX4A71101Y the same as VX4A61101Y?

No. VX4A71101Y is for ATV71; VX4A61101Y is for ATV61. They are not interchangeable.

Does InF4 always mean the control kit is faulty?

No. Schneider’s official guidance for InF4 lists recalibration via the diagnostic menu as a first resolution path. If recalibration is unavailable or unsuccessful, changing the control block becomes the next step.

Is this a single PCB or a complete kit?

It is a complete kit containing the Motor Control PCBA, Interface PCBA, Application PCBA, Terminal PCBA, Display PCBA, Keyboard, and associated hardware.