5.3 Description of Function Codes 5.3.4 P codes (Motor 1 parameters)
Sets the motor rated slip. 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.
• Rated slip: Convert the value obtained from the motor manufacturer to Hz using the following expression and
enter the converted value.
(Note: The motor rated value on the nameplate sometimes shows a larger value.)
frequency Base
speed sSynchronou
speed) Rated-speed us(Synchrono
= (Hz)frequency slip Rated
For details about slip compensation control, refer to the description of F42.
Motor 1 (Iron loss factor 1 to 3)
Inputs the exciting current required to create the magnetic flux produced inside the motor, and the characteristics
of the produced magnetic flux.
The combination of P99 (Motor 1 selection) and P02 (Motor 1 rated capacity) data determines the standard value.
Basically, there is no need to modify the setting.
Motor 1 (Magnetic saturation factors 1 to 5, and a, b, c)
Inputs the exciting current required to create the magnetic flux produced inside the motor, and the characteristics
of the produced magnetic flux. The combination of P99 (Motor 1 selection) and P02 (Motor 1 rated capacity) data
determines the standard value. Performing auto-tuning while the motor is rotating (P04 = 2) sets the value of these
factors automatically.
The load and motor inertia total is set with the theoretical acceleration/deceleration time.
Theoretical acceleration/deceleration time calculation formula
With motor rated output P [W], the acceleration time when support is provided to help the “total moment of inertia J
[kgm
2
] load converted to the motor shaft (including motor rotor) at motor rated torque at synchronous rotation speed
N [r/min]” accelerate from 0 [r/min] to synchronous rotation speed N [r/min] is taken to be the theoretical acceleration
time [s], and this calculation result is set.
T
[
s
]
=
2JN
60P
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