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Toshiba Tosvert VF-AS1 Instruction Manual Page 56

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 Sink logic/source logic (When inverter's internal power supply is used)
Current flowing out turns control input terminals on. These are called sink logic terminals.
The method generally used in Europe is source logic in which current flowing into the input terminal turns it on.
Sink logic terminals and source logic terminals are sometimes referred to as negative logic terminals and positive
logic terminals, respectively.
Each logic is supplied with power from either the inverter's internal power supply or an external power supply, and its
connections vary depending on the power supply used. Note that the PWR terminal is designed for safety purposes
to work always in source logic mode, regardless of the setting of SW1.
<Examples of connections when the inverter's internal power supply is used>
2
Programmable
controller
*1:Be sure to short across NO-CC
SINK
INT
SW1
Sink logic
24V
DC
Input
Output
F
Common
CC
24V
DC
Output
Common
P24/PLC
Input
OUT1
NO
CC
Inverter
Inverter
P24/PLC
F
R
CC
PWR
OUT1
RY
OUT2
RY
NO
*1
CC
SOURCE
INT/PLC
Programmable
controller
B-14
E6581442
SW1
Source logic
24V
DC
Input
P24/PLC
Common
Output
F
24V
DC
Output
P24/PLC
NO
Input
OUT1
Common
CC
Inverter
Inverter
P24/PLC
F
R
PWR
CC
OUT1
RY
OUT2
RY
NO

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