6. Function Description
6-30
2) Rotational auto-tuning
2.1) Precaution
CAUTION
Be sure to remove the load connected to the motor shaft before performing rotational auto-
tuning. Otherwise, it may lead to damage to the motor or bodily injury. DB resistor should be
installed because the inverter repeats abrupt Accel/Decel many times to find the motor
constant (Tr) during tuning.
2.2) Parameter setting
Code LCD display Description Setting range Unit
Factory
setting
PAR_23 AutoTuneType Auto tuning type selection
Rotational
StandStill
Rotational
PAR_24 Auto Tuning Auto tuning range setting
None
ALL1
ALL2
Encoder Test
Rs Tuning
Lsigma
Flux Curr
Ls Tuning
Tr Tuning
None
PAR_25 Tune Torque Tuning Torque 10.0 ~ 100.0 % 70
There are 8 types of auto-tuning selection for Rotational mode.
z
ALL2: Rs
Æ
Lsigma
Æ
Flux Current
Æ
Ls
Æ
Tr
z
ALL1: Encoder test
Æ
Perform ALL2
Rs, Lsigma, Flux Current, Ls, Tr: Perform each parameter seperately. Tr follows Rs, Ls auto-tuning to find exact value.
To save tuning time, increase PAR_25 “Tuning torque for Auto-tuning” when load inertia is high during Tr tuning.
FWD/REV LED is blinking during auto-tuning.
Auto-tuning
type
Description
None
No Operation
ALL1
Rs, L
σ,
I Flux, Ls, Tr are tuned continuously after Encoder test
ALL2
Rs, L
σ,
I Flux, Ls, Tr are tuned continuously except Encoder Test
Encoder Test
Encoder Test Only
The motor is rotating at 1500 rpm in forward direction and the encoder wiring
status is checked.
Rs Tuning
Rs tuning Only. The stator resistance is tuned at standstill.
Lsigma
Lsigma tuning Only. The Leakage Inductance is tuned at standstill.
Flux Curr
Flux current Only.
The motor is rotating at 1500 rpm and finds Flux current.
Ls Tuning
Ls Only.
The motor is rotating at 1500 rpm and finds Rotor Inductance.
Tr Tuning
Tr Only
The motor is ramping UP and DOWN continuously.
But tuning time can vary. It should be autotuned after Rs, Lσ, and Ls.
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