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Forward rotation
STF
SD
0 to 5VDC
10
Frequency setting
2
5
Connection diagram using terminal 2 (0 to 5VDC)
Forward rotation
0 to 10VDC
Frequency
Voltage input
setting
equipment
Connection diagram using terminal 2 (0 to 10VDC)
REMARKS
The wiring length of the terminals 10, 2, and 5 should be 30m at maximum.
Forward rotation
4 to 20mADC
Current input
Frequency setting
equipment
Connection diagram using terminal 4 (4 to 20mADC)
Reverse
Forward
rotation
rotation
Pr. 125
Reversible
Not
reversible
C2(Pr. 902)
0
2.5V
C3(Pr. 902)
C4(Pr. 903)
Frequency setting signal
Reversible operation example
NOTE
When reversible operation is set, be aware of reverse rotation operation when analog input stops (only the start
signal is input).
When reversible operation is valid, reversible operation (0 to 4mA: reverse operation, 4mA to 20mA: forward
operation) is performed by terminal 4 in the initial setting.
Parameters referred to
Pr. 125 Terminal 2 frequency setting gain frequency, Pr. 126 Terminal 4 frequency setting gain frequency
Pr. 561 PTC thermistor protection level
C2 (Pr. 902) Terminal 2 frequency setting bias frequency to C7 (Pr. 905) Terminal 4 frequency setting gain
Pr. 178 to Pr. 182 (input terminal function selection)
Frequency setting by analog input (terminal 2, 4)
(2)
Perform operation by analog input selection
Inverter
The frequency setting signal inputs 0 to 5VDC (or 0 to 10VDC) across
the terminals 2 and 5. The 5V (10V) input is the maximum output.
The power supply 5V can be input by either using the internal power
supply or preparing an external power supply. Prepare an external
power supply to input the power supply 10V. For the built-in power
supply, terminals 10-5 provide 5VDC output.
Terminal
Inverter
STF
SD
When inputting 10VDC to the terminal 2, set "0" or "10" in Pr. 73. (The
initial value is 0 to 5V)
2
Setting "1 (0 to 5VDC)" or "2 (0 to 10VDC)" in Pr. 267 and a voltage/
5
current input switch in the "V" position changes the terminal 4 to the
voltage input specification. When the AU signal turns ON, the terminal
4 input becomes valid.
(3)
Perform operation by analog input selection
Inverter
When the pressure or temperature is controlled constantly by a fan,
STF
pump, etc., automatic operation can be performed by inputting the
AU
output signal 4 to 20mADC of the adjuster across the terminals 4 and
SD
5.
4
The AU signal must be turned ON to use the terminal 4.
5
(4)
Perform forward/reverse rotation by analog input
(polarity reversible operation)
Setting "10" or "11" in Pr. 73 and adjusting Pr. 125 (Pr. 126) Terminal 2
frequency setting gain frequency (Terminal 4 frequency setting gain
frequency) and C2 (Pr. 902) Terminal 2 frequency setting bias frequency to
C7 (Pr.905) Terminal 4 frequency setting gain makes reverse operation
by terminal 2 (terminal 4) valid.
Terminal 2
Example)When performing reversible operation by terminal 2 (0 to 5V)
input (V)
5V
1) Set "11" in Pr. 73 to make reversible operation valid.
2) Set 1/2 of the value set in C4 (Pr. 903) in C3 (Pr. 902).
3) Reversible operation is performed when 0 to 2.5VDC is input and
Refer to page 119
Refer to page 134
Inverter Built-in
Power Supply
Voltage
10
5VDC
input
Set frequency at maximum analog input in Pr. 125 (Pr. 903)
forward rotation when 2.5 to 5VDC.
Frequency
Pr.73
Setting
(terminal 2 input
Resolution
power)
0.12Hz/60Hz
0 to 5VDC input
Refer to page 188
Refer to page 188
4
185
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