277
Frequency/torque setting by analog
input (terminal 1, 2, 4)
4
PARAMETERS
(2) Perform operation by analog input voltage
⋅ The frequency setting signal inputs 0 to 5VDC (or 0 to 10VDC) to across
the terminals 2-5. The 5V (10V) input is the maximum output frequency.
The maximum output frequency is reached when 5V (10V) is input.
⋅ The power supply 5V (10V) can be input by either using the internal
power supply or preparing an external power supply. The internal power
supply outputs 5VDC across terminals 10-5, or 10V across terminals
10E-5.
⋅ When inputting 10VDC to the terminal 2, set any of "0, 2, 4, 10, 12, 14"
in Pr. 73. (The initial value is 0 to 5V)
⋅ Setting "1 (0 to 5VDC)" or "2 (0 to 10VDC)" in Pr. 267 and a voltage/
current input switch in the OFF 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 current
⋅ When the pressure or temperature is controlled constant by a fan, pump,
etc., automatic operation can be performed by inputting the output signal
0 to 20mADC of the adjuster to across the terminals 4-5.
⋅ The AU signal must be turned on to use the terminal 4.
⋅ Setting any of "6, 7, 16, 17" in Pr. 73 and a voltage/current input switch in
the ON position changes the terminal 2 to the current input specification.
At this time, the AU signal need not be turned on.
Compensation input characteristic
when STF is on
(4) Perform forward/reverse rotation by analog input
(polarity reversible operation)
⋅ Setting any of "10 to 17" in Pr. 73 enables polarity reversible operation.
⋅ Providing ± input (0 to ±5V or 0 to ±10V) to the terminal 1 enables
forward/reverse rotation operation according to the polarity.
♦ Parameters referred to ♦
Pr. 22 Stall prevention operation level Refer to page 144
Pr. 125 Terminal 2 frequency setting gain frequency, Pr. 126 Terminal 4 frequency setting gain frequency Refer to page 282
Pr. 252, Pr. 253 Override bias/gain Refer to page 278
Pr. 858 Terminal 4 function assignment, Pr. 868 Terminal 1 function assignment Refer to page 274
STF
Inverter
Forward
rotation
Frequency
setting
0 to 5VDC
10
2
5
Connection diagram using
terminal 2 (0 to 5VDC)
PC
STF
Inverter
Forward
rotation
Frequency
setting
0 to 10VDC
10E
2
5
Connection diagram
using terminal 2 (0 to 10VDC)
PC
Terminal
Inverter Built-in Power
Supply Voltage
Frequency Setting
Resolution
Pr. 73 (terminal 2
input voltage)
10 5VDC 0.024Hz/50Hz 0 to 5VDC input
10E 10VDC 0.012Hz/50Hz 0 to 10VDC input
REMARKS
The wiring length of the terminal 10, 2, 5 should be 30m maximum.
STF
Inverter
Forward
rotation
Frequency
setting
4
5
AU
Connection diagram using
terminal 4 (4 to 20mADC)
4 to 20mADC
Current
input
equipment
PC
Forward
rotation
Reverse
rotation
Terminal 1 input (V)
+5
(+10)
-5
(-10)
0
50
Set frequency
(Hz)
Reversible
Not reversible
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