Omron 3G3MX2 Quick Start Manual page 22

PROGRAMMING MX2
Next diagram shows the auto-tuning procedure with motor rotation
Step 1: Set motor size and
motor poles
H003
H004
Result is displayed
___o
___9
Step 5: Clear display by
STOP key
Step 6: Activate motor
constant by H002
H002
A fine tuning could be achived setting parameter H005 that adjust the motor speed response. If the motor vibrates at constant
speed then you should reduce the H005 setting, if on the contrary the response of the motor is not enough you could increase the
value.
The H005 acts as a global gain response but also is possible to adjust the motor response at certain areas adjusting the motor
parameters separately.
The R1 parameter is adjusting the voltage applied at low speed, below 15-20Hz
No load current I0 is used for adjusting the voltage above this 15-20Hz
Finally R2 value is used to adjust the slip of the motor
V
R1
MX2 Quick Start Guide
Step 2:Set base freq. and
A003
Motor size
A082
Motor poles
Completed
Failed
When RUN cmd. is given, the motor runs according to
following steps.
(1) 1st AC excitation (no rotation)
(2) 2nd AC excitation (no rotation)
(3) 1st DC excitation (no rotation )
(4) V/f operation (80% of base freq.)
(5) SLV operation (X % of base freq.)
02
(6) 2nd DC excitation (no rotation)
(7) Displays the result.
No-load
current
Hz
15/20 Hz
AVR voltage
Base freq.
AVR voltage
Auto-tuning starts
Step 3: Enable auto-tuning
H001 02
Step 4: Start the inverter
according to RUN
cmd source
(Note 1)
R2
Speed
19