Omron RX Series - Page 104

2 Design
2 - 48
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
 For source logic
P24
PSC
SC
S1
P24
PSC
SC
S1
Switch OFF
With no diode inserted, the input turns
ON due to sneak current even when
the switch is OFF.
Power ON
P24
PSC
SC
S1
P24
PSC
SC
S1
Switch OFF
In place of short-circuit bar, insert a
diode to prevent sneak current.
Power ON
P24
PSC
SC
S1
P24
PSC
SC
S1
Power ON
Add a diode
Use an external
power supply
Switch OFF
The use of an external power supply
with the short-circuit bar removed
does not cause sneak current.
Power OFF Power OFF
Power OFF
Short-circuit
wire
Short-circuit
wire
Input
ON
Input
OFF
Input
OFF
24-VDC
Power
supply