Omron SYSDRIVE RX Series User Manual page 219

•With a machine (e.g. lift, ball screw) whose motor shaft rotation is limited, the machine may
be damaged if the allowable rotation limit is exceeded. In this case, set H001 to "01" (auto-
tuning without motor rotation).
•With a motor whose no-load current is unknown, measure the current at 50 Hz in the "V/f
setting" mode, and perform auto-tuning after setting the current value in H023/H223.
•Even if "01" (auto-tuning without motor rotation) is selected in H001, the motor may slightly
rotate.
•To perform auto-tuning for one rank lower motor size, enable the overload limit function and set
the overload limit level to 1.5 times the rated current of the motor.
Operating Procedure
(1) Set auto-tuning selection H001 to "01" or "02".
(2) Turn on the RUN command.
Turning on the RUN command starts automatic operation in the following sequence.
(1) 1st AC excitation (Motor does not run.)
↓
(2) 2nd AC excitation (Motor does not run.)
↓
(3) 1st DC excitation (Motor does not run.)
↓
(4) V/f operation (Motor accelerates up to 80% of the base frequency.)
↓
(5) SLV operation (Motor accelerates up to x% of the base frequency.)
↓
(6) 2nd DC excitation (Motor does not run.)
↓
(7) The auto-tuning result is displayed.
Note 1: When "auto-tuning without motor rotation" is selected (H001 = 01), steps (4) and (5) are not
performed.
Note 2: The rotation frequency in step (5) is defined as follows ("T" is whichever larger value of
acceleration time or deceleration time in step (4)):
When T ≤ 0 < 50 s,
When 50 s ≤ T < 100 s, x = 20%
When 100 s ≤ T,
Note 3: The auto-tuning result is displayed as follows:
Normal end
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If auto-tuning abnormally ends, perform it again.
(Press the STOP/RESET key to clear the display.)
Note 4: If a trip occurs during auto-tuning, the auto-tuning processing is forced to stop.
(No error message appears. Trip display is given higher priority.)
After removing the cause of a trip, perform the auto-tuning again.
Note 5: If the auto-tuning is interrupted by STOP command input (by pressing the STOP key or by
turning off the RUN command), the parameters for auto-tuning may remain in the Inverter.
To perform the auto-tuning again, initialize the parameters, and then set each parameter
again. (This also applies when you restart ordinary operation.)
Note 6: If the offline auto-tuning is performed with "free V/f setting" selected as the control method,
the Inverter displays an error message and stops processing.
Note 7: Even if auto-tuning is completed normally, the Inverter cannot be operated with the tuning
data. To do so, be sure to set motor parameter selection H002 to "01".
x = 40%
x = 10%
Abnormal end
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4-2 Function Mode
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