YASKAWA HV600 Manual page 365

Note:
• This parameter is applicable when L3-05 = 1, 2 [Stall Prevention during RUN = Deceleration Time 1 (C1-02), Deceleration Time 2 (C1-
04)].
• When L3-23 = 1 [Stall P Reduction at Constant HP = Automatic Reduction @ CHP Region], the drive will automatically decrease the level
in the constant output range.
Use an Analog Input to Change the Stall Prevent Level during Run
When H3-xx = 8 [MFAI Function Selection = Stall Prevent Level During Run], you can change the stall prevention
level during run through the input gain and bias settings for terminals A1 and A2.
If you set the input level for terminals A1 and A2 and L3-06, the drive will use the smaller value for Stall Prevent
Level during Run.
■
L3-11: Overvoltage Suppression Select
No.
Name
(Hex.)
L3-11 Overvoltage Suppression
Select
(04C7)
0 : Disabled
The drive does not adjust the regenerative torque limit or the output frequency. If you apply a regenerative load, the
drive can detect an ov [Overvoltage] fault.
1 : Enabled
When a regenerative load increases the DC bus voltage, the drive decreases the regenerative torque limit and
increases the output frequency to prevent ov.
■
L3-17: DC Bus Regulation Level
No.
Name
(Hex.)
L3-17 DC Bus Regulation Level
(0462)
Note:
This value is initialized when E1-01 [Input AC Supply Voltage] is changed.
Sets this parameter for any of the following circumstances.
• L3-11 = 1 [OV Suppression Function Select = Enabled].
• L3-04 = 2 [Decel Stall Prevention Selection = Automatic Decel Reduction].
■
L3-20: DC Bus Voltage Adjustment Gain
No.
Name
(Hex.)
L3-20 DC Bus Voltage Adjustment
Gain
(0465)
Expert
YASKAWA TOEPYAIHV6002A HV600 Drive Programming
Figure 2.92 Stall Prevention Level during Run with Analog Input
V/f OLV/PM EZOLV OLV/PM
Sets the overvoltage suppression function.
V/f OLV/PM EZOLV OLV/PM
Sets the target value for the DC bus voltage when the overvoltage suppression function and the Decel
Stall Prevention function (Intelligent Stall Prevention) are active.
V/f OLV/PM EZOLV OLV/PM
Sets the proportional gain used to control the DC bus voltage.
Description
Description
Description
2.9 L: Protection Functions
Default
(Range)
0
(0, 1)
Default
(Range)
208 V Class: 375 V,
480 V Class: 750 V
(208 V Class: 150 - 400 V,
480 V Class: 300 - 800 V)
Default
(Range)
Determined by A1-02
(0.00 - 5.00)
2
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