Parameter Details
11
11.9 L: Protection Functions
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 961
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 change the stall prevention
level during run through the input gain and bias settings for terminals A1, A2, and A3.
If you set the input level for terminals A1, A2, and A3 [H3-xx = 8] and L3-06, the drive will use the smaller value
for Stall Prevent Level during Run.
Figure 11.139 Stall Prevention Level during Run with Analog Input
■ L3-11: Overvoltage Suppression Select
No.
(Hex.)
Name Description
Default
(Range)
L3-11
(04C7)
Overvoltage
Suppression Select
Sets the overvoltage suppression function.
0
(0, 1)
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
■ L3-17: DC Bus Regulation Level
No.
(Hex.)
Name Description
Default
(Range)
L3-17
(0462)
DC Bus Regulation
Level
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.
200 V Class: 375 V,
400 V Class: 750 V
(200 V Class: 150 -
400 V, 400 V Class:
300 - 800 V)
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.
(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 [KEB Method Selection = Single Drive KEB Ride-Thru 2]
• L3-04 = 2 [Decel Stall Prevention Selection = Automatic Decel Reduction]
• L3-11 = 1 [OV Suppression Function Select = Enabled]
• H1-xx = 7A or 7B [MFDI Function Select = KEB Ride-Thru 2 (N.O./N.C.)]
Stall Prevention Level during Run (%)
(4 mA) (8.8 mA) (20 mA)
100
30
0 3 V 10 V
Input level of multi-function
analog input terminals A1,
A2, and A3
To Next Page
Loading...
