Toshiba TOSVERT VF-S11 Instruction Manual page 44

SINK (Negative) logic/SOURCE (Positive) logic (When an external power supply
is used)
The PLC terminal is used to connect to an external power supply or to insulate a terminal from other input
or output terminals. As for input terminals, turn the SW1 slide switch to the PLC position.
<Examples of connections when an external power supply is used>
2
Selecting the functions of the VIA and VIB terminals between analog input and
contact input
The functions of the VIA and VIB terminals can be selected between analog input and contact input by
changing parameter settings (
When using these terminals as contact input terminals in a sink logic circuit, be sure to insert a resistor
between the P24 and VIA terminals or between the P24 and VIB terminals. (Recommended resistance:
4.7KΩ-1/2W)
When using the VIA terminal as a contact input terminal, be sure to turn the VIA switch to the V position. If
no resistor is inserted or the VIA slide switch is not turned to the V position, contact input will be left always
ON, which is very dangerous.
Switch between analog input and contact input before connecting the terminals to the control circuit
terminals. Otherwise the inverter or devices connected to it may be damaged.
Slide switch SW1:PLC
Sink (Negative) logic
24V
DC
Common
PLC
Output
F
24V
DC
Input OUT
Common NO
Programmable
Inverter
controller
). (Factory default setting: Analog input)
Slide switch SW1:PLC
Source (Positive) logic
24V
DC
Input
24V
DC
Output
Programmable
controller
B-10
E6581158
Input
Output
F
PLC
Common
Output
Common OUT
Input NO
Inverter