IMO VXSM75-1 Instruction Manual page 47

F23 Starting frequency (Frequency)
F24 Starting frequency (Holding time)
F25 Stop frequency
•
The starting frequency can be set to insure
the torque during start of operation. Holding
time for at the starting frequency before
acceleration can
establishment of the magnetic flux of the
motor during start of operation.
F23
•
Frequency: Set the starting frequency.
Setting range: 0.1 to 60.0 Hz
F24
•
Holding time: Set the time for continuing the
starting frequency during start of operation.
Setting range: 0.0 to 10.0 s
*The Holding time is not placed during
changeover between forward and reverse
rotation.
*The Holding time is not included in the
acceleration time.
*The function is effective even when C21 Timer
operation is selected; the time is included in the
timer value.
F25
•
Set the stop frequency.
Setting range: 0.1 to 6.0 Hz
When the starting frequency is smaller than the
stop frequency and the frequency setting is
smaller than the stop frequency, operation does
not start.
F25 Motor sound (Carrier frequency)
•
This function adjusts the carrier frequency.
After adjustment, reduction of the motor
noise, avoidance of resonance with the
mechanical system, reduction of leakage
current from the output circuit wiring,
reduction of inverter noise and other effects
can be obtained.
Setting range: 0.75 to 15 (0.75 to 15 kHz)
5-18
be set to wait for
Carrier frequency Lower
Motor noise Larger
Output current
waveform Worse
Leakage current Less
RF emissions Less
*A smaller setting causes a less sinusoidal
output current waveform (with much harmonic
component) to cause an increase in the motor
loss, resulting in a slightly higher motor
temperature.
For example, when 0.75 kHz is set, reduce
the motor torque by about 15%. When a large
value is set, the inverter loss increases,
raising the inverter temperature.
F27 Motor sound (Sound tone)
•
The sound tone of the motor noise can be
changed when the carrier frequency is 7 kHz
or lower. Use the function according to
preference.
Setting range: 0, 1, 2, 3
F29 FMA and FMP terminals (Select)
•
Select the operation method of the FM
terminal.
0: Analog output (FMA function)
1: Pulse output (FMP function)
F30
FMA (Voltage adjust)
F31
FMA (Function)
The output frequency, output current and other
monitor data can be output to the FM terminal in
a DC voltage. The amplitude can be adjusted.
Note) To use the FM terminal for analog outputs,
set F29 at "0" and set SW1 on the control board
to FMA.
F30
•
Adjust the voltage corresponding to 100 [%]
of the monitoring amount of the monitoring
item selected at F31 in a range from 0 to 200
[%] (in an increment of 1 [%]).
Setting range: 0 to 200 [%]
10V or above
10V
5V
50%
Higher
to Smaller
to Better
to More
to More
F30:100%
F30:50%
F30:0%
100%
Selecting Functions