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L3-21: OVSuppression Accel/Decel P Gain

No.

(Hex.)

Name

Description

Default

(Range)

L3-21

(0466)

Expert

OVSuppression Accel/Decel P Gain

Sets the proportional gain to calculate acceleration and deceleration rates.

Determined by A1-02

(0.10 - 10.00)

Set one of these parameters to enable L3-20:

  • L2-29 = 1 [Kinetic Energy Backup Method = Single Drive KEB Ride-Thru 2]

  • L3-04 = 2 [Stall Prevention during Decel = Intelligent (Ignore Decel Ramp)]

  • L3-11 = 1 [Overvoltage Suppression Select = Enabled]

  • H1-xx = 7A or 7B [MFDI Function Selection = KEB Ride-Thru 2 Activate (N.O./N.C.)]

Note:

  • If stall prevention during deceleration function causes large speed or current ripples and L2-29 = 1, H1-xx = 7A or 7B, or L3-04 = 2, gradually decrease this parameter in 0.05-unit increments. If the drive detects ov [Overvoltage] or oC [Overcurrent], decrease L3-21. If you decrease the gain too much, it can cause a delay in control in the DC bus voltage or the deceleration time could be longer than the best deceleration time.

  • If sudden increases in the regenerative load cause ov faults and L3-11 = 1, gradually increase this parameter in 0.1-unit increments. If there are large speed ripples, gradually decrease this parameter in 0.05-unit increments.