InverterS300Verification pending — cross-check with the official manual
S300 Speed Deviation — Speed Deviation
Trip — immediate stop
CAUSE
Why does it occur?
Occurs when the difference between the motor speed and the current command speed remains greater than the PRT-67 (Speed Dev BandFreq) or PRT-68 (Speed Dev BandSpd) setting for longer than the PRT-69 (Speed Dev Time) setting.
REMEDY · Step by step
How to fix it?
Adjust the PRT-67 (Speed Dev BandFreq) or PRT-68 (Speed Dev BandSpd) setting.
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
CALLBACK
Request an expert callback
A 12-year automation/SI engineer responds directly. Reply within 1–3 business days.