N8: Pm Motor Control Tuning - Omron Q2A Series Technical Manual

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.
Name
(Hex.)
n8-01 PolPos Detection Current
(0540)
Expert
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.
Name
(Hex.)
n8-02 Pole Align Current Level
(0541)
Expert
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.
Name
(Hex.)
n8-03 Current Start Time
(0542)
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.
Name
(Hex.)
n8-04 Pole Align Time
(0543)
Expert
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].
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
V/f CL-V/f OLV CLV AOLV
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.
V/f CL-V/f OLV CLV AOLV
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.
V/f CL-V/f OLV CLV AOLV
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.
V/f CL-V/f OLV CLV AOLV
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.
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
12.9 n: SPECIAL
Default
(Range)
50%
(0 - 100%)
Default
(Range)
80%
(0 - 150%)
Default
(Range)
1.5 s
(1.5 - 5.0 s)
Default
(Range)
1.5 s
(1.5 - 5.0 s)
12
797