Fuji Electric FRENIC MEGA G2 Series - Page 388

5.3 Description of Function Codes 5.3.4 P codes (Motor 1 parameters)
5-204
P06 to P08
Motor 1 (No-load current, %R1 and %X)
P06 through P08 specify no-load current, %R1 and %X, respectively. Obtain the appropriate values from the test
report of the motor or by calling the manufacturer of the motor. Performing auto-tuning automatically sets these
parameters.
• No-load current: Input the value obtained from the motor manufacturer.
• %R1: Enter the value calculated by the following expression.
(%) 100×
)I×3(/V
R1CableR1
%R1
+
=
R1: Primary resistance of the motor (Ω)
Cable R1: Resistance of the output cable (Ω)
V: Rated voltage of the motor (V)
I: Rated current of the motor (A)
• %X: Enter the value calculated by the following expression.
(%) 100×
)I×3(/V
XCableXM)(X2/XM×X2X1
%X
+++
=
X1: Primary leakage reactance of the motor (Ω)
X2: Secondary leakage reactance of the motor (converted to primary) (Ω)
XM: Exciting reactance of the motor (Ω)
Cable X: Reactance of the output cable (Ω)
V: Rated voltage of the motor (V)
I: Rated current of the motor (A)
For reactance, use the value at the base frequency (F04).
P09 to P11
Motor 1 (Slip compensation gain for driving, Slip compensation response time, Slip
compensation gain for braking)
P09 and P11 determine the slip compensation amount in % for driving and braking individually and adjust the slip
amount from internal calculation. Setting to 100% fully compensates for the rated slip of the motor. Excessive
compensation (100 % or more) may cause hunting (undesirable oscillation of the system), so carefully check the
operation on the actual machine.
P10 determines the response time for slip compensation. Basically, there is no need to modify the default setting.
If you need to modify it, consult your Fuji Electric representatives.
Function code
Operation (slip compensation)
P09
Slip compensation gain (for
drive)
Adjust the slip compensation for driving.
Slip compensation amount when driving =
Rated slip x Slip compensation gain (when driving)
P11
Slip compensation gain
(braking)
Adjust the slip compensation amount when braking.
Slip compensation amount when braking =
Rated slip x Slip compensation gain (when braking)
P10
Slip compensation
response time
Set the slip compensation response time. Basically, there is no need
to modify the setting.
 For details about slip compensation control, refer to the description of function code F42.