YASKAWA GA700 Technical Manual page 889

The Initial Rotor Position Estimated Current is the current used to detect the initial position of rotors.
If the motor nameplate has an "Si" item, set the value found there.
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n8-02: Pole Attraction Current
No.
Name
(Hex.)
n8-02 Pole Attraction
Current
(0541)
The polar pull-in current is the current used to attract the rotor upon completion of detection of the initial rotor
position. When the value set in n8-02 is increased, the starting torque also increases.
• If the motor does not track properly at the time of the polar attraction, increase the value in increments of 10%.
If the value is set too high, oL2 [Drive Overloaded] may be detected.
• If the motor oscillates at the time of the polar attraction, reduce the value in increments of 10%.
Note:
This is effective when set to A1-02 = 7 [Control Method Selection = PM Closed Loop Vector Control] and carrying out Rotational
Auto-Tuning or Z Pulse Offset Tuning.
■
n8-03: Current Starting Time
No.
Name
(Hex.)
n8-03 Current Starting Time
(0542)
Sets the time that the pull-in current is to start when detecting the motor magnetic pole of the rotors.
Note:
If the motor oscillates at the time of the polar attraction, increase the value in increments of 0.5 s. If the value is set too high, oL2 [Drive
Overloaded] may be detected.
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n8-04: Polar Attraction Time
No.
Name
(Hex.)
n8-04 Polar Attraction Time
(0543)
Sets the amount of time that the pull-in current is to flow when detecting the motor magnetic pole of the rotors.
Note:
If the motor oscillates at the time of the polar attraction, increase the value in increments of 0.5 s. If the value is set too high, oL2 [Drive
Overloaded] may be detected.
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n8-11: Induction Volt Estimation Gain 2
No.
Name
(Hex.)
n8-11 Induction Volt
Estimation Gain 2
(054A)
Note:
At the default settings, with a setting of n8-72 = 0 [Speed Estimation Method Select = Conventional method], this will be 50.0. With a
setting of n8-72 = 1 [Speed Estimation Method Select = A1000 method], this will be 30.0.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
V/f CL-V/f OLV CLV AOLV
Sets the current at the time of polar attraction as a percentage of the motor
rated current, which is deemed to be 100%. Normally there is no need to
change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the amount for the Current Starting Time, which is used when carrying
out Z Pulse Offset Tuning. Normally there is no need to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the amount for the Polar Attraction Time, which is used when carrying
out Z Pulse Offset Tuning. Normally there is no need to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the gain for speed estimation. Normally there is no need to change this
setting.
11.10 n: Special Adjustment
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default Setting
(Range)
80%
(0 - 150%)
Default Setting
(Range)
1.5 s
(1.5 - 5.0 s)
Default Setting
(Range)
1.5 s
(1.5 - 5.0 s)
Default Setting
(Range)
Determined by n8-72
(0.0 - 1000.0)
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