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F23 Starting frequency (frequency)
F24 Start frequency (Holding time)
F25 Stop frequency
F 2 3
S T A R T
H z
Setting range: 0.1 to 60 Hz
Frequency: This function sets the frequency at startup.
The starting frequency can be set to reserve the torque
at startup and can be sustained until the magnetic flux of
the motor is established.
F 2 4
H O L D I N G
t
Setting range: 0.1 to 10.0 seconds
Holding time: This function sets the holding time during
which the start frequency is sustained at startup.
-
The holding time does not apply during switching
between forward and reverse.
-
The holding time is not included in the acceleration
time.
-
The holding time also applies when pattern opera-
tion (C21) is selected. The holding time is included
in the timer value.
F 2 5
S T O P
H z
Setting range: 0.1 to 6.0 Hz
This function sets the frequency at stop.
The operation will not start if the starting frequency is
less than the stopping frequency or if the set frequency
is less than the stopping frequency.
F26 Motor sound (carrier frequency)
F 2 6
M T R
S O U N D
This function adjusts the carrier frequency to prevent
resonance with the machine system, reduce motor and
drive noise, and also reduce leakage current from output
circuit wiring.
Drive Capacity
Setting Range
30 Hp or less
0.75 to 15kHz
40 to 100 Hp
0.75 to 10kHz
100 Hp or more
0.75 to 6kHz
Carrier frequency
Low — High
Motor noise
High — Low
Output current waveform
Bad — Good
Leakage current
Small amount – Large amount
Noise occurrence (RFI)
Extremely low – High
1. Reducing the set value adversely affects the output
current waveform (i.e., higher harmonics), increases
motor loss, and raises motor temperature. For
example, at 0.75 kHz, reduce the motor torque by
about 15%.
2
Increasing the set value increases drive losses and
raises drive temperature.
F27 Motor sound (sound tone)
F 2 7
M T R
T O N E
Setting range: 0 , 1, 2 , 3
The tone of motor noise can be altered if the carrier
frequency is 7 kHz or lower. Use this function as required.
F30 FMA terminal (voltage adjustment)
F31 FMA terminal (function selection)
F 3 0
F M A
V – A D J
Setting range: 0 to 200%
Monitor data (e.g.,output frequency, output current) can be
output to terminal FMA as a DC voltage. The amplitude of
the output can also be adjusted.
This function adjusts the voltage value of the monitor item
selected in F31 when the monitor amount is 100%. A
value from 0 to 200% can be set in 1% increments.
F 3 1
F M A
F U N C
This function selects the monitor item to be output to
Terminal FMA.
Value
Monitor Item
100% Monitor Amount
0
Output frequency 1
Maximum output
(before slip
frequency
compensation)
1
Output frequency 2
Maximum output
(after slip
frequency
compensation)
2
Output current
2x rated output current of drive
3
Output voltage
230V series: 250V
460V series: 500V
4
Output torque
2x rated motor torque
5
Load rate
2x rated load of motor
6
Output
2x rated drive output
7
PID feedback amount
Feedback amount at 100%
9
DC link circuit voltage
230V series: 500V
460V series: 1,000V
10
Universal AO
Output from RS485 or Bus option
5-15
- Quick Links:
- Alarm Information
- Function Selection List
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