Omron SYSDRIVE 3G3RV, User Manual

Page: 117 / 446

Trial Operation Procedures
4-
11
K K K K
Autotuning
Use
the following procedure to perform autotuning to automatically set motor constants when using the open-
loop
vector control method, when the cable length is long, etc.
n
Setting the Autotuning Mode
One
of the following three autotuning modes can be set.
•
Rotational
autotuning
• Stationary
autotuning
•
Stationary
autotuning for line-to-line resistance only
Rotational Autotuning (T1-01 = 0)
Rotational
autotuning is used only for open-vector control. Set T1-01 to 0, input the data from the nameplate,
and
then press the RUN Key on the Digital Operator. The Inverter will run the motor at zero speed for approx-
imately
1 minute, and run the motor for approximately 1 minute to set the required motor constants.
Stationary Autotuning (T1-01 = 1)
Stationary
autotuning is used only for open-vector control. Set T1-01 to 1, input the data from the nameplate,
and
then press the RUN Key on the Digital Operator. The Inverter will supply power to the stationary motor
for
approximately 1 minute and some of the motor constants will be set automatically. The remaining motor
constants
will be set automatically the first time operation is started in drive mode.
Stationary Autotuning for Line-to-Line Resistance Only (T1-01 = 2)
Stationary
autotuning for line-to-line resistance only can be used in any control method. This is the only auto-
tuning
possible for V/f control and V/f control with PG modes.
Autotuning
can be used to prevent control errors when the motor cable is long or the cable length has changed
or
when the motor and Inverter have different capacities.
To
perform autotuning in V/f control or V/f control with PG, set T1-01 to 2, and then press the RUN Key on
the
Digital Operator. The Inverter will supply power to the stationary motor for approximately 20 seconds and
the
Motor Line-to-Line Resistance (E2-05) and cable resistance will be automatically measured. This can be
performed
for open-loop vector control.
IMPORTANT
1. Always disconnect the motor from the machine and confirm that it is safe to operate the motor before
performing rotational autotuning.
2. If the motor cannot be operated by itself, perform stationary autotuning, but always use rotational
autotuning whenever it is possible to operate the motor by itself to increase performance.
IMPORTANT
1. Power will be supplied to the motor when stationary autotuning is performed even though the motor
will not turn. Do not touch the motor until autotuning has been completed.
2. When performing stationary autotuning connected to a conveyor or other machine, ensure that the
holding brake is not activated during autotuning.
3. Keep the motor load ratio to 50% or less the first time the system is operated in drive mode after per-
forming stationary autotuning.
IMPORTANT
1. Power will be supplied to the motor when stationary autotuning for line-to-line resistance is performed
even though the motor will not turn. Do not touch the motor until autotuning has been completed.
2. When performing stationary autotuning connected to a conveyor or other machine, ensure that the
holding brake is not activated during autotuning.