Toshiba TOSVERT VF-S11 Instruction Manual page 43

SINK (Negative) logic/SOURCE (Positive) logic (When the
inverter's internal power supply is used)
Current flowing out turns control input terminals on. These are called sink logic terminals. (Type: -AN/-WN).
The general used method in Europe is source logic in which current flowing into the input terminal turns it
on (Typ: -WP).
Sink logic is sometimes referred to as negative logic, and source logic is referred to as positive logic.
Each logic is supplied with electricity from either the inverter's internal power supply or an external power
supply, and its connections vary depending on the power supply used.
<Examples of connections when the inverter's internal power supply is used>
Slide switch SW1:SINK
Sink (Negative) logic
Programmable
controller
24V
DC
Input
Output
F
Common
CC
24V
D
Output
Common P24
Input OUT
NO
CC
Programmable
Inverter
controller
B-9
Slide switch SW1:SOURCE
Source (Positive) logic
24V
DC
Input
P24
Common
Output
F
24V
DC
Output
P24
OUT
NO
Input
Common CC
Inverter
E6581158
2