Parameter Details
11
11.4 C: Tuning
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 757
If you apply a regenerative load when slip compensation during regeneration is active, it can be necessary to use a
dynamic braking option (braking resistor or braking resistor unit).
0 : Disabled
The drive does not provide slip compensation.
The load and operation status (regenerative operation) can cause the motor speed to be higher or lower than the
frequency reference.
1 : Enabled Above 6Hz
Slip compensation function is enabled during regenerative operation. Slip compensation is disabled at output
frequencies of 6 Hz or less.
2 : Enabled Above C3-15
The drive uses E2-02 [Motor Rated Slip] to automatically calculate the frequency range where it will disable slip
compensation function during regenerative operation.
Slip compensation is enabled at frequencies as low as 2 Hz.
■ C3-05: Output Voltage Limit Selection
No.
(Hex.)
Name Description
Default
(Range)
C3-05
(0213)
Output Voltage Limit
Selection
Sets the automatic reduction of motor magnetic flux when the output
voltage is saturated.
0
(0, 1)
Make sure that the drive has sufficient output current capacity before you enable this parameter. When this
parameter is 0 [Enabled], the drive increases the output current to a maximum of 10% when the motor is running
at constant speed. The drive will also decrease flux and increase current to compensate torque.
Enable this parameter to increase speed precision when you move heavy loads at high speeds in these conditions:
• Power supply voltage is low
• Motor rated voltage is high
Do not enable this parameter in these conditions:
• Operating a motor in the middle speed range or low speed range
• Power supply voltage is a minimum of 10% more than the motor rated voltage
When this parameter is enabled, you could possibly not have accurate torque control if the power supply voltage
is much less than the motor rated voltage.
0 : Disabled
1 : Enabled
■ C3-16: Vout Modulation Limit Start Lvl
No.
(Hex.)
Name Description
Default
(Range)
C3-16
(0261)
Expert
Vout Modulation
Limit Start Lvl
Sets the modulation factor that starts the output voltage limit operation
when C3-05 = 1 [Output Voltage Limit Selection = Enabled].
90.0%
(70.0 - 90.0%)
■ C3-17: Vout Modulation Limit Max Level
No.
(Hex.)
Name Description
Default
(Range)
C3-17
(0262)
Expert
Vout Modulation
Limit Max Level
Sets the modulation factor used with C3-18 [Output Voltage Limit Level] for
the output voltage limit operation when C3-05 = 1 [Output Voltage Limit
Selection = Enabled].
100.0%
(85.0 - 100.0%)
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