Yamaha DRCX User Manual page 38

When external 24V power supply is used.
c
CAUTION
To prevent possible accidents when using an external 24V power supply, do not use it simultaneously with the
internal power supply.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Push-button
DI
NPN transistor
DI
Incandescent lamp
DO
Solenoid valve
DO
+IN COM
0V
External DC24V
power supply
Photocoupler
Input signal
Output signal
Internal DC24V power supply
Controller side
3-4 I/O Circuits
3
11
3-