Mitsubishi Electric 800 Series Instruction Manual page 277

• Set Pr.267 and the voltage/current input selection switch according to the following table.
Pr.267 setting Terminal 4 input
0 (initial value) 4 to 20 mA
1 0 to 5 V
2 0 to 10 V
NOTE
• To enable terminal 4, turn ON the AU signal.
• Set the parameters and the switch settings so that they agree. Incorrect setting may cause a fault, failure, or malfunction.
• Use Pr.125 (Pr.126) (frequency setting gain) to change the maximum output frequency at the input of the maximum output
frequency command voltage (current). At this time, the command voltage (current) need not be input. Also, the acceleration/
deceleration time, which is a slope up/down to the acceleration/deceleration reference frequency, is not affected by the change
in Pr.73 setting.
• To input frequency through terminal 4, set "0" (initial value) in Pr.858.
• Always calibrate the input after changing the voltage/current input signal with Pr.73 (Pr.267) and the voltage/current input
selection switch.
 Running with analog input voltage
• For the frequency setting signal, input 0 to 5 VDC (or 0 to 10 VDC) between terminals 2 and 5. The 5 V (10 V) input is the
maximum output frequency.
• The power supply 5 V (10 V) can be input by either using the internal power supply or preparing an external power supply.
The internal power supply is 5 VDC output via terminal 10.
Inverter internal power source
Terminal
10 5 VDC
• To supply the 10 VDC input to terminal 2, set "0 or 10" in Pr.73. (The initial value is 0 to 5 V.)
• Set "1 (0 to 5 VDC)" or "2 (0 to 10 VDC)" in Pr.267 and set the voltage/current input selection switch to "V" in order to input
voltage through terminal 4. Turning ON the AU signal activates the terminal 4 input.
Forward
rotation
0 to 5 VDC
Frequency
setting
Connection diagram using
terminal 2 (0 to 5 VDC)
NOTE
• The wiring length of terminal 10, 2, and 5 should be 30 m at maximum.
 Running with analog input current
• For constant pressure or temperature control with fans, pumps, or other devices, automatic operation is available by setting
the regulator output signal 4 to 20 mADC to between terminals 4 and 5.
276
12.(T) Multi-Function Input Terminal Parameters
12.1 Analog input selection
Switch 4
I
V
V
voltage
Inverter
STF
Voltage/current
SD
input switch
10
2
Frequency
5
setting
Reversible operation
Determined by Pr.73
setting
Frequency setting resolution
0.030/60 Hz
Inverter
Forward STF
Voltage/current
rotation
SD
input switch
0 to 10 VDC
2
Voltage
input
5
equipment
Connection diagram
using terminal 2 (0 to 10 VDC)
Pr.73 (terminal 2 input voltage)
0 to 5 VDC input
Forward
Inverter
rotation
STF
AU
Terminal 4
input selection
SD
0 to 5 VDC
10
Frequency
4
setting
5
Connection diagram
using terminal 4 (0 to 5 VDC)
Voltage/current
input switch