Regenerative Overvoltage during Acceleration

What does E.OV1 mean?

Regenerative power or a power supply surge has caused the inverter's internal main circuit DC voltage to rise above the specified limit, triggering the protective shutdown. This can occur with rapid acceleration, especially with vertical loads, or if stall prevention settings are incorrect. Continued overvoltage can damage inverter components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If applicable, set Pr.154 Voltage reduction selection during stall prevention operation to "11".