Allen Bradley PowerFlex 70, PowerFlex 700, PowerFlex 700L & PowerFlex 700S Drive
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Mar 11, 2024 12:17 pm
Cause : Abs Ovespd Det comes when motor speed has exceeded the limits set by parameter 30 [Rev Speed Limit] minus parameter 335 [Abs OverSpd Lim] or parameter 31 [Fwd Speed Limit] plus parameter 335 [Abs OverSpd Lim].
1. Verify the encoder feedback is correct polarity
2. Verify drive is not in torque mode, Par 110 [Spd/Torq ModeSel], value 2, Torque Ref
-If in torque mode, verify load is present.
3. Verify min/max settings Par 30 [Rev Speed Lim] and Par 31 [Fwd Speed Lim].
4. Verify the load is not overhauling.
-If the load is overhauling, turn bus regulator off, Par 414 [Brake/Bus Cnfg], bit 2 [BusRef High].
