IMO VXSM75-1 Instruction Manual page 58

function code (P05) is displayed. When the
FWD or REV terminal is connected to start
tuning, disconnect the terminal.
Note) Turn the BX and RST terminals off
before starting tuning.
WARNING
• If auto tuning is set at "2", the motor
turns at a half of the base frequency.
Make sure that the motor is disconnected
from the mechanical units and that no
danger results from the rotation.
Otherwise injuries could occur.
P05
Motor 1 (Online tuning)
•
The motor temperature changes after
operation for a long time, changing the motor
speed. Use online tuning to reduce the speed
fluctuation caused by temperature changes of
the motor.
Setting State of operation
Inactive
0
Active
1
P06 Motor 1 (No-load current)
•
This parameter is the no-load current
(exciting current) of motor 1.
Setting range: 0.00 to 99.9 A
P07
Motor 1 (%R1 setting)
P08
Motor 1 (%X setting)
•
Write these parameters when a motor other
than a standard three-phase motor is used
and the impedance between the inverter and
motor and motor constant are already known.
•
Calculate %R1 in the following formula.
where R1:
Resistance of primary coil of motor for single
phase [ohm]
Cable R:
Resistance of output cable for single phase
[ohm]
V: Rated voltage [V]
I: Rated motor current [A]
Selecting Functions
•
Calculate %X in the following formula.
where
X1: Primary leakage reactance of motor [ohm]
X2: Secondary leakage reactance of motor
(conversion to primary value) [ohm]
XM: Motor excitation reactance [ohm]
Cable X: Reactance of output cable [ohm]
V: Rated voltage [V]
I: Rated motor current [A]
Note) Use the reactance effective at F04
"Base frequency 1".
•
Add the value for a reactor and filter
connected to the output circuit. If the cable
value can be ignored, the cable value should
be "0".
P09 Motor 1
(Slip compensation control 1)
•
When the load torque changes, the motor slip
changes and the motor speed fluctuates.
With the slip compensation control, a
frequency proportional to the motor torque is
added to the output frequency of the inverter
to minimize the fluctuation of the motor speed
caused by torque changes.
Setting range: 0.00 to 15.00 Hz
•
Calculate the slip compensation data in the
following formula.
(Slip) = (Synchronized speed) - (Rated
speed)
P10
Motor 1 (Slip compensation
response time 1)
•
Set the response time for slip compensation.
Note) With a small setting, the response time
becomes shorter, but regeneration may
cause overvoltage tripping with some
loads. In this case, set this function to
longer time.
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