E6582233
B-10
2
Connection of SINK (Negative) logic/SOURCE (Positive) logic
Current flowing out turns control input terminals on. These are called sink logic terminals.
The general used method in Europe is source logic in which current flowing into the input terminal turns it
on.
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.
Sink logic is default setting.
Sink/source logic can be switched by parameter .
<Examples of connections when the inverter's internal power supply is used>
CC
NO
Source (Positive) logic
Inverter
P24
F
Programmable
controller
Common
Common
Output
Input
Input
24V
DC
Output
Sink (Negative) logic
F
CC
Common
Output
Input
24V
DC
Output
OUT
P24
24V
DC
CC
NO
OUT
P24
24V
D
Input
Common
Inverter
Programmable
controller
f127
=
0
f127
=
100
Note 3) Be sure to connect NO and CC terminals for Sink logic.
Be sure to connect P24 and OUT terminals for Source logic.
Note 3)
Note 3)
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