Toshiba TOSVERT VF-AS1 Instruction Manual page 47

Sink logic/source 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. Use the slide switch SW1 to switch between sink logic and source logic configurations.
<Examples of connections when an external power supply is used>
PLC
SW1
Sink logic
24V
DC
Common
Output
24V
DC
Input
Common
Programmable
controller
External 24V
power supply
0V +24V
RY
RY
Note: Be sure to connect the 0V terminal on the external power supply to the CC
terminal on the inverter.
*When OUT1 is used as a pulse output terminal (when SW4 is in the PULSE position), the circuit
shown below is always formed regardless of the logic selected (sink or source) and the power
supply used (internal or external power supply).
Input
P24/PLC
F
CC
Output
OUT1
NO
Inverter
P24/PLC
F
R
ST
CC
OUT1
OUT2
NO
SW4
OUT1
CC
B-13
INT/PLC
SW1
Source logic
24V
DC
Output
Common
24V
DC
Common
Input
Programmable
controller
External 24V
power supply
0V +24V
RY
RY
P24
PULS
E6581301
2
Input
F
CC
Output
NO
OUT1
Inverter
F
R
ST
CC
OUT1
OUT2
NO