Toshiba VFNC3-2001P Instruction Manual page 45

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SINK (Negative) logic/SOURCE (Positive) logic (When an external power supply
is used)
The output logic terminal (OUT-NO) can be used by external power supply.
<Examples of connections when an external power supply is used>
2
Selecting the functions of the VI terminal between analog input and logic contact
input
The functions of the VI terminal can be selected between analog input and logic contact input by changing
parameter settings (). (Factory default setting: Analog input 0-10V)
When using this terminal as logic contact input terminal in a sink logic circuit, be sure to insert a resistor
between the P24 and VI terminals. (Recommended resistance: 4.7KΩ-1/2W)
If no resistor is inserted, logic contact input will be left always ON, which is very dangerous.
Switch between analog input and logic contact input before connecting the terminals to the control circuit
terminals. Otherwise the inverter or devices connected to it may be damaged.
of the connection of input terminals VI when
they are used as contact input terminals.
This example illustrates the connection when
the inverter is used in sink (Negative) logic mode.
Sink (Negative) logic
24V
DC
Input
Common
Programmable
controller
The figure on the right shows an example
=2
24V
Output
OUT
NO
Programmable
I nverter
controller
4.7kΩ
B-10
E6581595
Source (Positive) logic
DC
Output
Common OUT
Input NO
Inverter
P24
V I
CC