Stabilization Parameter - Omron SYSDRIVE RX Series User Manual

4-2 Function Mode
High-torque Multi-operation
•When "sensorless vector control" or "0-Hz sensorless vector control" is selected with a single
Inverter, this function controls two motors of the same type to drive a single load.
•To use this function, you set the same parameters as when you select "Sensorless Vector Control"
(page 4-113) or "0-Hz Sensorless Vector Control" (page 4-114). However, set the motor
parameters as follows:
4
•When different loads are driven with two motors, a fluctuation in one load affects the operating
condition of the other, which may hinder normal control.
To prevent this, be sure to operate a system in a way that the load driven by two motors is regarded
as one load.
Related functions

Stabilization Parameter

•This function adjusts to reduce motor hunting.
•In case of motor hunting, check whether motor capacity H003/H203 and motor pole number
selection H004/H204 match your motor. If they do not, match them. If the motor's primary
resistance is smaller than that of the standard motor, increase the H006/H206/H306 set value
gradually. To run a motor with a capacity larger than the Inverter's rated capacity, reduce the set
value.
•Other than this function, the following methods are suggested to reduce hunting:
Lower the carrier frequency (b083). (Refer to page 4-65.)
Lower the output voltage gain (A045). (Refer to page 4-24.)
Parameter No.
H006/H206/H306
A045
b083
4-117
•Set motor parameters R1, R2, and L to one half of the set value for one motor.
•Set motor parameter Io to be twice the set value for one motor.
•Set motor parameter J to one half of the total moment of inertia of two motors and loads
connected to these motors.
•Select the motor capacity value closest to the total capacity of two motors.
A044/A244, F001, b040, b041 to b044, H002/H202, H003/H203, H004/
H204, H005/H205, H020/H220, H021/H221, H022/H222, H023/H223,
Function name
Stabilization parameter
Output voltage gain
Carrier frequency
H024/H224, H050/H250, H051/H251, H052/H252
Data
0. to 255.:
If hunting occurs, adjust the set value.
20. to 100.:
If hunting occurs, reduce the set value.
0.5 to 15.0:
If hunting occurs, reduce the set value.
Default setting Unit
⎯
100.
100 %
5.0 kHz