YASKAWA CIPR-GA50C series Technical Manual page 686

12.9 L: Protection Functions
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L3-06: Stall Prevent Level during Run
No.
Name
(Hex.)
L3-06 Stall Prevent Level during
Run
(0494)
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.
• The upper limit to the setting range changes when the setting for C6-01 [Normal / Heavy Duty Selection] changes.
–150% when C6-01 = 0 [Heavy Duty Rating]
–120% when C6-01 = 1 [Normal Duty Rating]
Use an Analog Input to Change the Stall Prevent Level during Run
When H3-xx = 8 [MFAI Function Select = Stall Prevent Level During Run], you can use the input gain and bias
settings for terminals A1 and A2 to change the stall prevention level during run.
If you set the input level for terminals A1 and A2 [H3-xx = 8] and L3-06, the drive will use the smaller value for
Stall Prevent Level during Run.
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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. Use this setting with a dynamic braking option.
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
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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].
686
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the output current level at which the Stall Prevention function is enabled during run when the
drive rated output current is 100%.
Figure 12.121 Stall Prevention Level during Run with Analog Input
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the overvoltage suppression function.
V/f OLV OLV/PM AOLV/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.
Description
Description
Description
YASKAWA SIEPC71061753A GA500 Technical Manual
Default
(Range)
Determined by C6-01 and
L8-38
(5 - 150%)
Default
(Range)
0
(0, 1)
Default
(Range)
200 V Class: 375 V, 400 V:
750 V
(200 V Class: 150 to 400 V,
400 V Class: 300 to 800 V)