Fuji Electric FRENIC-HVAC User Manual page 448

P04 Motor 1 (Auto-tuning)
The inverter automatically detects the motor constants and saves them as parameters in its
internal memory. Basically, no tuning is required as long as a Fuji standard motor is used with
standard connection with the inverter.
There are two types of auto-tuning as listed below. Select appropriate one considering the
limitations in your equipment and control mode.
Data for
P04
0 Disable
Tune the motor
1
while it is stopped
Tune the motor
2 while it is rotating
under V/f control
 For details of auto-tuning, refer to the Chapter 5 "Preparation and Test Run."
In any of the following cases, perform auto-tuning since the motor parameters are
different from standard ones so that the full performance may not be obtained under
some controls.
• The motor to be driven is a non-Fuji motor or a non-standard motor.
• Cabling between the motor and the inverter is long. (Generally, 20 m or longer)
• A reactor is inserted between the motor and the inverter.
When the terminal command RST ("Reset alarm") is ON, it is not possible to
change the P04 setting. Turn the RST OFF beforehand.
 Refer to E01 to E07, E98 and E99 (data = 8).
Functions in which the motor parameters affect the running capability

Auto torque boost
Output torque monitor
Load factor monitor
Auto energy saving operation
Torque limiter
Anti-regenerative control (Automatic deceleration)
Auto search
Slip compensation
Dynamic torque vector control
Auto-tuning Operation
N/A
Tunes while the
motor is stopped.
After tuning the
motor in a stopped
state, retunes it
running at 50% of
the base frequency.
Function
6-138
Motor parameters to be tuned
N/A
Primary resistance (%R1) (P07)
Leakage reactance (%X) (P08)
No-load current (P06)
Primary resistance (%R1) (P07)
Leakage reactance (%X) (P08)
Related function codes (representative)
F37
F31, F35
F31, F35
F37
F40, F41, E16, E17
H69
H09
F42
F42