24 V external
power supply input
The terminal function can be selected by Pr.178 to Pr.196 (Input terminal function selection). (Refer to
Correctly set Pr.73, Pr.267, and the corresponding switch of the voltage/current input selection switch assembly to input an analog signal in
accordance with the setting.
Applying a voltage with the switch ON (current input is selected) or applying a current with the switch OFF (voltage input is selected) could cause
component damage of the inverter or analog circuits of output devices. (For the details, refer to
Sink logic is initially set for the FM-type inverter.
Source logic is initially set for the CA-type inverter.
Terminal function description
When connecting the frequency setting potentiometer at an initial
status, connect it to terminal 10.
Change the input specifications of terminal 2 using Pr.73 when
connecting it to terminal 10E.
Inputting 0 to 5 VDC (or 0 to 10 V, 0 to 20 mA) provides the
maximum output frequency at 5 V (10 V, 20 mA) and makes input
and output proportional. Use Pr.73 to switch among input 0 to 5
VDC (initial setting), 0 to 10 VDC, and 0 to 20 mA. Set the
voltage/current input switch 1 for terminal 2 in the ON position to
select current input (0 to 20 mA).
Inputting 4 to 20 mADC (or 0 to 5 V, 0 to 10 V) provides the
maximum output frequency at 20 mA and makes input and output
proportional. This input signal is valid only when the AU signal is
ON (terminal 2 input is invalid). Use Pr.267 to switch among input
4 to 20 mA (initial setting), 0 to 5 VDC, and 0 to 10 VDC. Set the
corresponding switch of the voltage/current input selection switch
assembly to the OFF position to select voltage input (0 to 5 V / 0
to 10 V).
Use Pr.858 to switch terminal functions.
Input 0 to ±5 VDC or 0 to ±10 VDC to add this signal to the
frequency setting signal input via terminal 2 or 4. Use Pr.73 to
switch between input 0 to ±5 VDC and 0 to ±10 VDC (initial
setting). Use Pr.868 to switch terminal functions.
Common terminal for the frequency setting signal (via terminal 2,
1, or 4) and for the analog output terminals AM and CA. Do not
For receiving PTC thermistor outputs.
When PTC thermistor is valid (Pr.561 ≠ "9999"), terminal 2 is not
available for frequency setting.
For connecting a 24 V external power supply.
If a 24 V external power supply is connected, power is supplied
to the control circuit while the main power circuit is OFF.
10 ±0.4 VDC,
current: 10 mA
5 ±0.5 VDC, permissible
load current: 10 mA
For voltage input,
input resistance: 10 ±1
permissible voltage: 20
VDC. For current input,
input resistance: 245 ±5
permissible current: 30
Input resistance: 10 ±1
maximum voltage: ±20
0.5 to 30 kΩ (Set in
Input voltage: 23 to 25.5
VDC, input current: 1.4
A or less
2. INSTALLATION AND WIRING
2.6 Control circuit