IMO VXSM75-1 Instruction Manual page 57

P: Motor parameters
P01
Number of motor 1 poles
•
This parameter is the number of poles of
driven motor 1. Write a value to display
correct motor speeds (synchronized speeds)
at the LED.
Setting range: 2, 4, 6, 8, 10, 12 or 14
P01
Motor 1 (Capacity)
•
A standard applicable motor capacity is set
before shipment from the factory. Change the
setting to drive a motor rated at other than the
standard applicable motor capacity.
Setting range:0.01 to 5.50 kW(3.7kW or
smaller)
0.01 to 11.00kW (5.5,7.5kW)
Set the standard applicable motor capacity
specified in section
Specifications". The setting range should be
between one size higher or lower by two
sizes from the standard applicable motor
capacity. If the range is exceeded, accurate
control may not be possible. If a value
between the standard applicable motor
capacity and the capacity of another size is
set, the data of the lower capacity is
automatically written for the data of the
related functions.
•
After the setting of this function is changed,
the settings of the following related functions
change to the data for standard three-phase
motor.
P03 "Motor 1 (Rated current)"
P06 "Motor 1 (No-load current)"
P07 "Motor 1 (%R1)"
P08 "Motor 1 (%X)"
Note) The settings of three-phase standard
motor are the data for 3-phase 200V or
400V/ 50 Hz.
P03 Motor 1 (Rated current)
•
This parameter is the rated current of motor
1.
Setting range: 0.00 to 99.9 A
P04
Motor 1 (Tuning)
•
The motor data is measured and the data is
automatically written.
5-28
Setting
•
Perform a tuning when the P06, P07 and P08
data written in the inverter in advance differs
from the actual motor data, that is, in the
following cases. Improvement in the control
9-1 "Standard
and calculation accuracy is expected.
-
-
-
Tuning procedure
1. Adjust the voltage and frequency according to
the characteristics of the motor. Adjust "F03",
"F04", "F05" and "F06".
2. Enter the motor constants which cannot be
tuned. P02 "Capacity", P03 "Rated current",
P06 "No-load current" (The no-load current is
not necessary in Dynamic tuning.)
3. To tune the no-load current, too, disconnect
the motor from the mechanical units and
check that no danger occurs even if the motor
turns.
4. Set P04 "Tuning" to "1" (motor stop) or "2"
(motor rotation) and press the FUNC/DATA
key to write the data, then issue an operation
command (press the RUN key or turn the
FWD or REV terminal on) to start tuning.
Tuning takes several seconds to several tens
of seconds. (When the setting is "2", the
motor accelerates to a half of the base
frequency in the set acceleration/deceleration
time to tune the no-load current, then
decelerates. Therefore the time necessary for
tuning
acceleration/deceleration time.)
5. During tuning, the set data ("1" or "2") blinks
rapidly and, upon the end of tuning, the next
State of operation
0 Inactive
1 The primary resistance (%R1) of the
motor and the leakage reactance (%X)
at the base frequency are measured
while the motor is stopped, and the data
is automatically written to P07 and
P08.(Static tuning)
2 The primary resistance (%R1) of the
motor and the leakage reactance (%X)
at the base frequency are measured
while the motor is stopped, then the no-
load current (Io) is measured while the
motor turns, and P06, P07 and P08 are
automatically written.(Dynamic tuning)
When a motor other than non standard
three-phase motor (4 poles) is used.
When the impedance on the output side
cannot be ignored due to a long wiring
length between the inverter and the motor
or connection of a reactor.
When %R1 or %X is unknown due to a
nonstandard motor or a special motor.
varies according to the set
Selecting Functions