1.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual
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Prevention
Sets the target DC bus voltage target level used by the overvoltage suppression function (L3-
11 = 1) and Intelligent Stall Prevention during deceleration (L3-04 = 2).
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L3-20: DC Bus Voltage Adjustment Gain
Determines the proportional gain used by overvoltage suppression (L3-11 = 1), Kinetic
Energy Backup 2, and Intelligent Stall Prevention during deceleration (L3-04 = 2) in order to
control the DC bus voltage.
Adjustment for KEB 2 and Intelligent Stall Prevention During Deceleration
• Increase this setting slowly in steps of 0.1 if overvoltage (ov) or undervoltage (Uv1)
occurs at the beginning of deceleration while KEB Ride-Thru 2 is enabled or Intelligent
Stall Prevention during deceleration is activated.
• If this setting is too high, then a fair amount of speed or torque ripple can result.
Adjustment for Overvoltage Suppression
• Increase this setting slowly in steps of 0.1 if overvoltage suppression is enabled (L3-11 =
1) and a sudden increase in a regenerative load results in overvoltage (ov).
• If this setting is too high, then a fair amount of speed or torque ripple can result.
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L3-21: Accel/Decel Rate Calculation Gain
Determines the proportional gain used by overvoltage suppression (L3-11 = 1), Kinetic
Energy Backup 2, and Intelligent Stall Prevention during deceleration (L3-04 = 2) in order to
calculate acceleration and deceleration rates.
No.
<1> Values are for 200 V class drives and must be doubled for 400 V class drives.
<2> This value is initialized when E1-01 is changed.
Name
Setting Range
Default
L3-17
Desired DC bus voltage for overvoltage
suppression, and Intelligent Stall Prevention
during deceleration
150 to 400
370 V
No.
Name
Setting Range
Default
L3-20
DC Bus Voltage Adjustment Gain
0.00 to 5.00
1.00
No.
<1> This value is reset to its default value when the control mode is changed (A1-02). The value shown here is for
Open Loop Vector Control.
Name
Setting Range
Default
L3-21
Accel/Decel Rate Calculation Gain
0.00 to 200.00
Содержание OYMC V1000
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