Toshiba VF-PS1 Instruction Manual page 52

Variable torque inverter
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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
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
CC
SOURCE
INT/PLC
Programmable
controller
B-14
E6581386
SW1
Source logic
24V
DC
Input
Common
P24/PLC
Output
F
24V
DC
Output
P24/PLC
NO
Input
OUT1
CC
Common
Inverter
Inverter
P24/PLC
F
R
PWR
CC
OUT1
RY
OUT2
RY
NO

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