Motor Parameter Settings - Omron RX Series User Manual

 Operating Procedure
1
Set the 1st Motor Parameter selection (H002) to 02 (Online auto-tuning enabled).
The Auto-tuning Selection (H001) must be set to 00 (Disabled).
2
Input the RUN command.
The inverter will perform online auto-tuning automatically during the stop.
Secondary Resistance Compensation Function (Temperature
Compensation)
• This function provides compensation for suppressing the variation of the rotation speed due to
temperature changes in the motor. It is enabled when sensorless vector control, 0-Hz sensorless
vector control, or sensor vector control is selected as the control method. Use the thermistor PB-41E
(from SHIBAURA ELECTRONICS).
• To use this function, set the Thermistor Selection (b098) to 02 (NTC). Other thermistor settings do
not provide correct temperature detection.
Parameter No.
P025
6-2-4

Motor Parameter Settings

• To use the sensorless vector control, 0-Hz sensorless vector control, or sensor vector control
method, you need to set the motor parameters. Normally, perform offline auto-tuning to determine the
motor parameter values.
• Set the motor parameters manually if the offline auto-tuning process is aborted, for example, if the
inverter does not reach 50% of the rated current during auto-tuning.
• Set the 1st/2nd Motor Parameter selection (H002/H202) to 00 (Standard motor parameter).
By default, the inverter is set to use the motor parameter values for typical general-purpose motors.
To maximize the performance of the vector control, adjust each parameter value according to your
motor.
• Obtain the motor's datasheet from the motor manufacturer to set the motor parameters.
The following values must be set as 50-Hz data for one phase in 3-phase Y-connection.
Winding resistance on primary side of motor:
Winding resistance on secondary side of motor:
Motor leakage inductance:
Motor no-load current:
Moment of inertia:
• For the 3rd control, the motor parameter values set for the 1st control will be used.
High-function General-purpose Inverter 3G3RX-V1 User's Manual (I578-E1)
Function name
Secondary Resistance
Compensation Selection
Data
00: Disabled
01: Enabled
Set the wiring resistance (in
of the motor for one phase in Y-connection.
Set the wiring resistance (in
side of the motor for one phase in Y-connection.
Set the motor leakage inductance (in mH) in
Y-connection.
Set the no-load current of the motor, or set the
current value measured when the motor rotates
with no load at 50 Hz.
Add the moment of inertia of the motor and that of
the load and set the motor-shaft conversion of the
sum.
6 Vector Control
Default data Unit
00 –
Ω
) on the primary side
Ω
) on the secondary
6 - 11
6