Parameter Details
12
12.9 n: SPECIAL
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 797
Note:
• For settings 2 and 3, the adjustment time can cause a delay before startup.
• For settings 2 and 3, the drive can set the line-to-line resistance value of E9-10 [Motor L-L Resistance].
• When the temperature will change at startup, use setting 3.
• To decrease the startup time, set this parameter to 1, then do line-to-line resistance tuning.
• If you will start from coasting, set this parameter to 1, then do line-to-line resistance tuning.
◆ n8: PM MOTOR CONTROL TUNING
n8 parameters are used to make adjustments when controlling PM motors.
■ n8-01 PolPos Detection Current
No.
(Hex.)
Name Description
Default
(Range)
n8-01
(0540)
Expert
PolPos Detection Current
Sets the Initial Rotor Position Estimated Current as a percentage where E5-03 [PM Mot Rated
Current (FLA)] = 100%. Usually it is not necessary to change this setting.
50%
(0 - 100%)
The drive uses the Initial Rotor Position Estimated Current to detect the initial position of rotors.
If the motor nameplate has an “Si” item, use that value.
■ n8-02 Pole Align Current Level
No.
(Hex.)
Name Description
Default
(Range)
n8-02
(0541)
Expert
Pole Align Current Level
Sets the current at the time of polar attraction as a percentage where motor rated current = 100%.
Usually it is not necessary to change this setting.
80%
(0 - 150%)
The drive uses the polar pull-in current to attract the rotor after it detects the initial rotor position. When you
increase the value of this parameter, the starting torque also increases.
• If the motor does not track correctly at the time of the polar attraction, increase the value in 10% increments. If
you set the value too high, the drive will detect oL2 [Drive Overloaded].
• If the motor oscillates at the time of the polar attraction, decrease the value in 10% increments.
Note:
Set A1-02 = 7 [Control Method = PM CLVector] and do Rotational Auto-Tuning or Z Pulse Offset Tuning to use this function.
■ n8-03 Current Start Time
No.
(Hex.)
Name Description
Default
(Range)
n8-03
(0542)
Current Start Time
Sets the length of the Current Starting Time, which is used for Z Pulse Offset Tuning. Usually it is
not necessary to change this parameter.
1.5 s
(1.5 - 5.0 s)
Sets the length of time of pull-in current when the drive detects the motor magnetic pole of the rotors.
Note:
If the motor oscillates at the time of the polar attraction, increase the value in 0.5 s increments. If the value is too high, the drive can
detect oL2 [Drive Overloaded].
■ n8-04 Pole Align Time
No.
(Hex.)
Name Description
Default
(Range)
n8-04
(0543)
Expert
Pole Align Time
Sets the length of the Polar Attraction Time, which is used for Z Pulse Offset Tuning. Usually it is
not necessary to change this setting.
1.5 s
(1.5 - 5.0 s)
Sets the length of time that the pull-in current flows when the drive detects the motor magnetic pole of the rotors.
Note:
If the motor oscillates at the time of the polar attraction, increase the value in 0.5 s increments. If you set the value too high, the drive
will detect oL2 [Drive Overloaded].
To Next Page
Loading...
Need help?
General
