Omron Q2A Series Technical Manual page 26

1.2 Features and Advantages of Control Methods
PM Open Loop Vector
Control Method
Control
Selection
(OLV/PM)
Controlled
Motor
KEB Ride-Thru
Yes
*5
Function
Overexcitation No (induction motor-
Deceleration specific function)
Overvoltage
Suppression Yes
*5 *7
Function
Sensorless Zero
No
*5
Speed Control
*1 Enabled when n8-57 = 1 [High-Freq Injection = Enabled].
*2 Rotational Auto-Tuning is necessary.
*3 Contact the manufacturer or your nearest sales representative to drive non-Yaskawa PM motors (SSR1 and SST4 series standard
specifications).
*4 Select the drive capacity accordingly.
*5 Note these points when you use this function:
• When you can decouple the motor and machine for a test run, use Rotational Auto-Tuning. You must make adjustments to the
control in the range where there is no vibration in the machine after Rotational Auto-Tuning.
• For vector control, use a 1:1 drive to motor ratio. You cannot use vector control when more than one motor is connected to one
drive. Select a drive capacity so that the motor rated current is 50% to 100% of the drive rated current. If the carrier frequency is
too high, the drive rated current is derated.
*6 Torque control at zero speed is only available with IPM motors. To enable torque control with IPM motors at zero speed, set n8-57 =
1.
*7 Do not use this function with hoist application.
26
PM Advanced Open PM Closed Loop Vector
Loop Vector Control
(AOLV/PM)
PM Motor
Yes Yes
No (induction motor- No (induction motor-
specific function) specific function)
Yes Yes
Yes (IPM motors only) -
EZ Open Loop Vector
Control Control
(CLV/PM) (EZOLV)
Induction Motors/PM
Motors/SynRM
(Synchronous
Reluctance Motors)
Yes
No
Yes
No
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Notes
-
Quickly and safely stops the motor
during power loss and
automatically starts operation at the
previous speed when restores
power without coasting the motor.
Sets the V/f higher than the setting
value during deceleration to
increase motor loss and decrease
deceleration time.
Adjusts speed during regeneration
to prevent overvoltage.
Enabled with high frequency
injection with IPM motors.