Yaskawa Matrix Converter - Manual (Page 92)

Test Run Procedures
4-
9
„ Selecting the Best Auto-Tuning Mode
Rotational Auto-Tuning (T1-01 = 0)
Rotational Auto-Tuning is used for Open Loop Vector Control and Flux Vector Control. Set T1-01 to 0, input
the data from the nameplate, and then press the RUN key on the digital operator. The MxC will stop the motor
for approximately one minute and then set the required motor parameters automatically while operating the
motor for approximately one minute.
Stationary Auto-Tuning for Line-to-Line Resistance Only (T1-01 = 2)
Stationary Auto-Tuning for line-to-line resistance only can be used in any control method. This is the only
Auto-Tuning possible for V/f Control Method and V/f Control Method with a PG encoder.
Auto-Tuning can be used to prevent control errors when the motor cable is long (50 m or longer) or the cable
length has changed since installation or when the motor and MxC have different capacities.
Set T1-01 to 2, and then press the RUN key on the digital operator. The MxC will supply power to the station-
ary motor for approximately 20 seconds and the Motor Line-to-Line Resistance (E2-05) and cable resistance
will be automatically measured.
Stationary Auto-Tuning 2 (T1-01 = 4)
Stationary Auto-Tuning 2 is used for Open Loop Vector Control and Flux Vector Control. Set T1-04 to 4, and
Motor No-Load Current (T1-09) will be added. Input the data written on the motor nameplate. Be sure to input
the value or motor no-load current (motor exciting current) from motor examination results to T1-09. After
Auto-Tuning, the value of T1-09 will be written in E1-03. When not setting T1-09, the no-load current value
of Yaskawa standard motor will be written in E1-03.
IMPORTANT
1. Always disconnect the motor from the machine and confirm that it is safe to operate the motor before
performing Rotational Auto-Tuning.
2. If the motor cannot be operated by itself, perform Stationary Auto-Tuning, but always use Rotational
Auto-Tuning whenever it is possible to operate the motor by itself to increase performance.
IMPORTANT
1. Power will be supplied to the motor when Stationary Auto-Tuning for line-to-line resistance is per-
formed even though the motor will not turn. Do not touch the motor until Auto-Tuning has been com-
pleted.
2. When performing Stationary Auto-Tuning connected to a conveyor or other machine, ensure that the
holding brake is not activated during Auto-Tuning.
IMPORTANT
1. Power will be supplied to the motor when Stationary Auto-Tuning 2 is performed even though the
motor will not turn. Do not touch the motor until Auto-Tuning is complete.
2. When performing Stationary Auto-Tuning 2 connected to a conveyor or other machine, ensure that the
holding brake is not activated during Auto-Tuning.