Detailed operation by function groups
158
Code
Keypad display Name
Range
Unit
Setting
7 (Ls Tuning)
8 (Tr Tuning)
9 (InertiaTuning)
•
The L100 inverter provides 9 different types of rotating auto-tuning.
•
“ALL2” type auto-tuning detects stator resistance (Rs), leakage factor (Lsigma), flux
current, rotor time constant (Tr), stator inductance (Ls) and inertia values.
•
If you perform the “ALL1” type auto-tuning, “ALL2” tuning is performed after the encoder
test.
Note
•
“Inertia Tuning” options are available only when PAR_34 is set to “Yes”.
•
Rotor time constant (Tr) can be correctly estimated only after stator
resistance (Rs), leakage factor (Lsigma), and stator inductance (Ls) values
are obtained through an auto-tuning.
•
Adjust PAR_32 (If tuning Error protection P gain) and PAR_33 (If tuning error
protection I gain) parameter values if errors occur during an excitation current
tuning. Increase the PAR_35 (Inertia tuning acc/dec time) parameter value if
a high inertial load is connected to the motor. Increase the PAR_36 (Inertia
LPF) parameter value if a large amount of fluctuation is observed with high
inertia loads.
•
The FWD and REV operation indicators on the keypad flash simultaneously
during an auto-tuning.
•
Auto-tuning is based on a motor sync speed of 1,800 rpm.
Auto-tuning types
Description
None
Do not perform auto-tuning.
ALL1
Perform auto-tuning in the order of Rs, Lsigma, flux current, Ls, and Tr tuning
after completing an encoder test.
ALL2
Perform auto-tuning in the order of Rs, Lsigma, flux current, Ls, and Tr tuning
without an encoder test.