Allen Bradley PowerFlex 70, PowerFlex 700, PowerFlex 700L & PowerFlex 700S Drive
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Mar 11, 2024 12:18 pm
Cause : Vref Decel Fail comes when the value of parameter 301 [Motor Spd Ref] has failed to decrease during a ramp to zero speed stop. This could possibly be due to a speed trim from parameters 21 [Speed Trim 1], 22 [Speed Trim 2] or 23 [Speed Trim 3].
