Omron SYSDRIVE MX2 SERIES, User Manual

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6 Vector Control and Applied Functions
6 - 60 Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
Precautions for Correct Use
• Even if you set H001 to 01 (Auto-tuning without motor rotation), for example, the 4-pole
motor may rotate by approximately up to1/8 of a rotation (half the inverse of poles).
• High-tone sound or minor vibration may occur during auto-tuning.
• If a holding brake is provided, release the brake before executing auto-tuning.
• Auto-tuning cannot be performed with a motor whose rated current exceeds the rated output
current of the inverter, or with a motor whose rated current is 50% of the rated current of the
inverter or lower.
• Adequate auto-tuning may not be performed if a motor cable is long (longer than 20 m).
• Set the Carrier Frequency (b083) to 8.0 kHz or higher. Setting a low carrier frequency results
in a poor auto-tuning accuracy, and the inverter cannot perform adequate control.
3
Operations after auto-tuning
• After normal end of auto-tuning, set the PM Motor Parameter Selection (H102) to 01
(Auto-tuning parameter).
This enables the PM motor parameters (H111 to H113) set by the auto-tuning function.
• At the end of auto-tuning, the inverter automatically resets the Auto-tuning Selection (H001)
to 00 (Disabled).
To retry auto-tuning, set H001 again to enable auto-tuning.
Precautions for Correct Use
Set again the DC Injection Braking Selection (A051) value which you set to 00 (Disabled) in “1.
Presetting of parameters” according to the user environment.
4
Operations in case of error
If auto-tuning is aborted due to an error, review the preset parameters according to “1. Presetting
of parameters” and check that the rated torque of the motor is at least 50% of the rated output cur-
rent of the inverter. If the inverter is connected with any load, disconnect it and retry auto-tuning.
If the error persists or auto-tuning is still aborted, enter the motor parameter values directly.
For details, refer to 6-8-5 PM Motor Parameter Settings on page 6-61.
Parameter
No.
Function name Data
Default
data
Unit
H102
PM Motor Parameter Selec-
tion
00: Standard PM motor parameter
00
−
01: Auto-tuning parameter
H111
PM Motor Parameter R
(Auto-tuning Data)
0.001 to 65.53
Dependent
on capacity
Ω
H112
PM Motor Parameter Ld
(Auto-tuning Data)
0.01 to 655.3
Dependent
on capacity
mH
H113
PM motor Parameter Lq
(Auto-tuning Data)
0.01 to 655.3
Dependent
on capacity
mH