n
n8-35: Initial Rotor Position Detection Selection
Selects how the rotor position is detected at start.
Note:
1.
In CLV/PM, the drive performs a magnetic pole search the first time it starts the motor. After that, rotor position is calculated from the
PG encoder signal and saved until the drive is switched off. Parameter n8-35 determines how this initial pole search operates.
2.
High Frequency Injection and pulse injection for rotor position detection (n8-35 = 1 or 2) can be used with IPM motors only. When
using an SPM motor, select the pull in method to find the initial position of the rotor (n8-35 = 0).
3.
This parameter is only available in AOLV/PM or CLV/PM.
No.
Name
Setting Range
Default
n8-35
Initial Rotor Position Detection Selection
0 to 2
1
Setting 0: Pull In
Starts the rotor using pull-in current.
Setting 1: High Frequency Injection
High frequency is injected to detect the rotor position. Some noise may be generated from the motor at start.
Setting 2: Pulse Injection
A pulse signal is injected into the motor to detect the rotor position.
n
n8-36: High Frequency Injection Level
Sets the frequency level used for High Frequency Injection. Enabled when n8-57 = 1. There is normally no need to change
this parameter from the default value.
No.
Name
Setting Range
Default
n8-36
High Frequency Injection Level
200 to 1000 Hz
500 Hz
n
n8-37: High Frequency Injection Amplitude
Sets the amplitude of high-frequency injection as a percentage of the voltage class standard (200 V Class: 200 V, 400 V Class:
400 V). Enabled when n8-57 = 1.
No.
Name
Setting Range
Default
n8-37
High Frequency Injection Amplitude
0.0 to 50.0%
20.0%
n
n8-39: Low Pass Filter Cutoff Frequency for High Frequency Injection
Sets a cutoff frequency of a low pass filter for high frequency injection. Enabled when n8-57 = 1. There is normally no need
to change this parameter from the default value.
No.
Name
Setting Range
Default
n8-39
Low Pass Filter Cutoff Frequency for High Frequency Injection
0 to 1000 Hz
50 Hz
n
n8-45: Speed Feedback Detection Control Gain (for PM Motors)
Sets the gain for internal speed feedback detection control. Although this parameter rarely needs to be changed, adjustment
may be necessary under the following conditions:
• Increase this setting if motor oscillation or hunting occurs.
• Decrease this setting in increments of 0.05 to decrease drive responsiveness.
Note:
This parameter is only available in OLV/PM.
No.
Name
Setting Range
Default
n8-45
Speed Feedback Detection Control Gain (for PM Motors)
0.00 to 10.00
0.80
n
n8-47: Pull-In Current Compensation Time Constant (for PM Motors)
Sets the time constant for pull-in current to match the actual current.
Although this setting rarely needs to be changed, adjustment may be necessary under the following conditions:
• Increase this setting when it takes too long for the reference value of the pull-in current to match the target value.
• Decrease this setting if motor oscillation occurs.
Note:
This parameter is only available in OLV/PM.
5.9 n: Special Adjustments
340
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
Summary of Contents for U1000 iQpump Drive
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