Parameter Details
12
12.10 n: Special Adjustment
YASKAWA SIEPC71061737D GA800 Drive Technical Reference 1033
Note:
• If n8-74 [Light Load Iq Level] > n8-75, the drive will detect oPE08 [Parameter Selection Error].
• The change is linear between n8-74 and n8-75 and the level of the pull-in current from n8-48 to n8-78 [Medium Load Id Current].
■ n8-76: Id Switching Filter Time
No.
(Hex.)
Name Description
Default
(Range)
n8-76
(05CD)
Expert
Id Switching Filter Time
Sets the filter time constant for d-axis current reference. Usually it is not necessary to change this
setting.
200 ms
(0 - 5000 ms)
■ n8-77: Heavy Load Iq Level
No.
(Hex.)
Name Description
Default
(Range)
n8-77
(05CE)
Heavy Load Iq Level
Set n8-49 [Heavy Load Id Current] to the percentage of load current (q-axis current) that you will
apply, where E5-03 [PM Motor Rated Current (FLA)] = a setting value of 100%.
90%
(0 - 255%)
Note:
The change is linear between n8-75 [Medium Load Iq Level (low)] and n8-77 and the level of the pull-in current from n8-78 [Medium Load
Id Current] to n8-49 [Heavy Load Id Current].
■ n8-78: Medium Load Id Current
No.
(Hex.)
Name Description
Default
(Range)
n8-78
(05F4)
Medium Load Id Current
Sets the level of the pull-in current for mid-range loads.
0%
(-200 - +200%)
■ n8-79: Pull-in Current @ Deceleration
No.
(Hex.)
Name Description
Default
(Range)
n8-79
(05FE)
Pull-in Current @
Deceleration
Sets the pull-in current that can flow during deceleration as a percentage of the E5-03 [PM Motor
Rated Current (FLA)].
50%
(0 - 200%)
If overcurrent occurs during deceleration, slowly decrease the setting in 5% increments.
Note:
When n8-79 = 0, the drive will use the value set in n8-51 [Pull-in Current @ Acceleration].
■ n8-84: Polarity Detection Current
No.
(Hex.)
Name Description
Default
(Range)
n8-84
(02D3)
Expert
Polarity Detection Current
Sets the current that the drive uses to estimate the initial motor magnetic pole as a percentage where
E5-03 [PM Motor Rated Current (FLA)] = 100%.
100%
(0 - 150%)
Note:
The drive automatically calculates this value when High Frequency Injection Auto-Tuning completes successfully.
WARNING! Sudden Movement Hazard. Make sure that the polarity is correct before you send a Run command. If the drive
incorrectly detects the polarity, the drive can rotate in the direction opposite of the Run command and cause serious injury or death.
When you use a Yaskawa motor, check the motor nameplate for an “Si” value and set this parameter ≥ "Si × 2".
Consult the motor manufacturer for information about maximum setting values.
Find the Polarity of Magnetic Poles
When you start operation, the drive estimates the magnetic poles and finds the polarity of the magnetic poles. When
A1-02 = 7 [Control Method Selection = CLV/PM], the drive finds the polarity of the magnetic poles only at the first
startup.
Use U6-57 [PolePolarityDeterVal] to make sure that the drive correctly estimated the polarity of the magnetic poles.
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