User`s guide

130
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter
Unit
Description / Notes
P407
(3)
0.50 to 0.99
Rated Motor
[According to
Power Factor
the inverter
model ]
0.01
Set this parameter according to motor nameplate.
If this value is not available:
- If the rated motor efficiency is known (

nom
= P399),
obtain the power factor through the following equation:
P
P407 = cos = 433 x
V x I x

nom

Where:
-
P
isthe motor power in (HP)(toconvertHP to W multiply
by 750, i. e., 1 HP = 750 W).
-
V
is the rated motor line voltage in Volts (V) – P400
-
I
is the rated motor current in Amperes (A) – P401
- For an approximation, usethe values of the table in item
9.3 of this manual.
This parameter is used in V/F control [slip compensation
function and automatic torque boost function (automatic
IxR)] and vector control.
P409
(3)
0.00 to 99.99
Motor Stator
[According to
Resistance
the inverter
model ]
0.01

Value estimated by the self-tuning routine.
The table in item 9.3 shows the stator resistance for
standard, IV pole, 60 Hz, 220/380 V motors.
The value of the stator resistance can also be entered at
P409 directly, if this value is known.
NOTE!
P409 shall contain the equivalent value of the stator
resistance of one phase, by supposing that the motor
is star connected (Y).
NOTE!
Ifthe value of P409 is toohighforthe motor, a disabling
of the inverter can occur due to overcurrent (E00).
Throughthisparameteryoucanrunthe self-tuningroutine,
wherethe stator resistance oftheusedmotor isestimated
automaticalyby the inverter.
The motor will notrun.
By setting P408 = 1, the self-tuning routine is started.
During the running of the self-tuning routine, the display
flashes .
If the interruption of the self-tuning routine is desired,
press
.
If the estimated value of the motor stator resistance is
too high for
the applied inverter (examples: motor is not
connectedor motoristoo smallfor theinverter)the inverter
displays E14. You can only exit from this condition by
switching off the inverter.
P408
(1) (3)
0 or 1
Run Self-Tuning
[ 0
]
-