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L3-20: DC Bus Voltage Adjustment Gain

No.

(Hex.)

Name

Description

Default

(Range)

L3-20

(0465)

Expert

DC Bus Voltage Adjustment Gain

Sets the proportional gain used to control the DC bus voltage.

Determined by A1-02

(0.00 - 5.00)

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 ov [Overvoltage] and Uv1 [DC Bus Undervoltage] faults when you start deceleration and L2-29 = 1, H1-xx = 7A or 7B, or L3-04 = 2, gradually increase this parameter in 0.1-unit increments. If the setting value is too high, it can cause large speed or current ripples.

  • If sudden increases in the regenerative load cause ov faults and L3-11 = 1, gradually increase this parameter in 0.1-unit increments. If the setting value is too high, it can cause large speed or current ripples.