Mitsubishi Electric FR-D720S SC EC Instruction Manual page 300

Frequency setting by analog input (terminal 2, 4)
Perform operation by analog input voltage
The frequency setting signal inputs 0 to 5V DC (or 0 to 10V DC) to across the terminals 2-5.
The 5V (10V) input is the maximum output frequency.
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 5V DC output.
Forward rotation
Forward rotation
Frequency
setting
Terminal
10
Tab. 6-29: Built-in power supply voltage
When inputting 10V DC to the terminal 2, set "0" or "10" in Pr. 73. (The initial value is 0 to 5V.)
Setting "1" (0 to 5V DC) or "2" (0 to 10V DC) in Pr. 267 and a voltage/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.
NOTE The wiring length of the terminal 10, 2, 5 should be 30m maximum.
6 - 150
0–5V DC
Frequency
setting
Presetting of set frequency value
using terminal 2 (0–5V DC)
PC
0–10V DC
Voltage input
equipment
Presetting of set frequency value
using terminal 2 (0–10V DC)
Inverter Built-in Power Supply
Voltage
5V DC
Fig. 6-80:
Frequency setting by voltage 0–5V DC
Fig. 6-81:
Frequency setting by voltage 0–10V DC
Frequency Setting
Pr. 73 (terminal 2 input voltage)
Resolution
0.1Hz/50Hz
Parameter
I001182E
I001884E
0–5V DC