11.10 n: Special Adjustment
770 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Adjust this parameter in these conditions:
• When n1-01 = 1, 2 [Hunting Prevention Selection = Enabled (Normal), Enabled (High Carrier Frequency)]: If
oscillation occurs when you operate a motor with a light load, increase the setting value in 0.1-unit increments.
• When n1-01 = 1, 2, if the motor stalls: Decrease the setting value in 0.1-unit increments.
■ n1-08: Current Detection Method
No.
(Hex.)
Name Description
Default
(Range)
n1-08
(1105)
Expert
Current Detection Method
Sets how the drive decreases the motor vibration that is caused by leakage current. Usually it is
not necessary to change this parameter.
0
(0, 1)
0 : 2-Phases
1 : 3-Phases
Note:
The n1-08 = 1 setting is effective in suppressing motor vibrations due to leakage current when the wiring distance is long.
■ n1-13: DC Bus Stabilization Control
No.
(Hex.)
Name Description
Default
(Range)
n1-13
(1B59)
Expert
DC Bus Stabilization
Control
Sets the oscillation suppression function for the DC bus voltage.
0
(0, 1)
0 : Disabled
1 : Enabled
Note:
If the DC bus voltage does not become stable with light loads and the drive detects ov [Overvoltage], set this parameter to 1.
■ n1-14: DC Bus Stabilization Time
No.
(Hex.)
Name Description
Default
(Range)
n1-14
(1B5A)
Expert
DC Bus Stabilization Time
Adjusts the responsiveness of the oscillation suppression function for the DC bus voltage. Set n1-
13 = 1 [DC Bus Stabilization Control = Enabled] to enable this parameter.
100.0 ms
(50.0 - 500.0 ms)
Note:
Adjust this parameter in 100 ms increments.
■ n1-15: PWM Voltage Offset Calibration
No.
(Hex.)
Name Description
Default
(Range)
n1-15
(0BF8)
Expert
PWM Voltage Offset
Calibration
Sets the calibration method that the drive uses to decrease torque/current ripple.
Determined by A1-02
(0 - 2)
This calibration function lets the drive suppress the torque ripple of a motor. Usually it is not necessary to change
this setting.
0 : No Calibration
1 : One Time Calibrate at Next Start
2 : Calibrate Every Time at Start
■ n1-16: Hunting Prevention High Fc Gain
No.
(Hex.)
Name Description
Default
(Range)
n1-16
(0BFB)
Hunting Prevention High Fc
Gain
Sets the gain for the hunting prevention function. This parameter functions best with a high carrier
frequency. Usually it is not necessary to change this parameter.
Determined by o2-04
(0.00 - 2.50)
Set n1-01 = 2 [Hunting Prevention Selection = Enabled (High Carrier Frequency)] to enable this function.
To Next Page
Loading...
Need help?
General