YASKAWA L1000A - N9: Current Detection Adjustments

5.9 n: Special Adjustments
248 YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Setting 0: Disabled
After searching for the rotor pole position one time, the drive starts using the detected rotor position. If the detected
position is wrong, an error occurs when the drive attempts to run the motor. The initial pole search takes approximately
1.5 s.
Setting 1: Enabled
The rotor pole position search is executed multiple times. The drive starts using the detected rotor position only if there is
no difference between the search results. Otherwise a dv8 error will be output. The initial pole search takes approximately
1.5 to 5.0 s.
■
Other Settings
Parameters n8-29 to n8-33 can be used to adjust the current control loop. Adjustment is not normally required.
Parameter n8-62 sets a voltage limit in order to prevent voltage saturation.
■
n8-29: q-Axis Current Control Gain during Normal Operation
Sets the q-Axis proportional gain for the automatic current regulator.
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n8-30: q-Axis Current Control Integral Time during Normal Operation
Sets the q-Axis integral time for the automatic current regulator.
■
n8-32: d-Axis Current Control Gain during Normal Operation
Sets the d-Axis proportional gain for the automatic current regulator.
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n8-33: d-Axis Current Control Integral Time during Normal Operation
Sets the d-Axis integral time for the automatic current regulator.
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n8-62: Output Voltage Limit
Sets the output voltage limit to prevent voltage saturation of the motor. Avoid setting this value higher than the input
voltage on the motor nameplate to maintain optimum motor performance.
◆ n9: Current Detection Adjustments
■ n9-60: A/D Conversion Start Delay
Sets a delay time used for A/D conversion of the current. This value rarely needs to be changed. However, it can help to
resolve speed ripple problems at constant speed when using a PM motor. Prior to adjusting this value, make sure all other
parameters (motor data, speed loop settings) are adjusted correctly.
No. Parameter Name Setting Range Default
n8-29 q-Axis Current Control Gain during Normal Operation 0 to 2000 rad/s 1000 rad/s
No. Parameter Name Setting Range Default
n8-30 q-Axis Current Control Integral Time during Normal Operation 0.0 to 100.0 ms 10.0 ms
No. Parameter Name Setting Range Default
n8-32 d-Axis Current Control Gain during Normal Operation 0 to 2000 rad/s 1000 rad/s
No. Parameter Name Setting Range Default
n8-33 d-Axis Current Control Integral Time during Normal Operation 0.0 to 100.0 ms 10.0 ms
No.
<1> Values shown here are for 200 V class drives. Double values when using a 400 V class drive. Multiply value by 2.875 for 600 V class drives.
Parameter Name Setting Range Default
n8-62 <1> Output Voltage Limit 0.0 to 230.0 Vac 200 Vac
No. Parameter Name Setting Range Default
n9-60 A/D Conversion Start Delay 0.0 to 40.0 μs Determined by o2-04
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