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23
2
INSTALLATION AND WIRING
4) Sink logic type
The sink logic type is a logic where a signal turns on when a current flows out of the corresponding
signal input terminal.
Terminal SD is common to the contact input signals. Terminal SE is common to the open collector output
signals.
When using an external power supply for transistor output, use terminal PC as a common to prevent
misoperation caused by undesirable current. (Do not connect terminal SD of the inverter with terminal
0V of the external power supply. When using terminals PC-SD as a 24VDC power supply, do not install
the power supply in parallel outside the inverter. Doing so may cause misoperation due to leakage
current.)
AX40Inverter
R
R
RUN
SE
1
9
24VDC
R
STF
STR
SD
Current
R
9
10
24VDC
SD
PC
24VDC
(SD)
AY40 type
transistor output
module
Inverter
1
2
STR
STF
Current flow