General-Purpose Outputs - Yamaha RCX240 User Manual

1. Standard I/O interface over view
1.5.2

General-purpose outputs

1
c
CAUTION
• When an inductive load (solenoid, relay, etc.) is used, always connect a diode in
• Never short the DO output to DC 24V (NPN specifications) since this will damage
2
• Never short the DO output to GND (PNP specifications) since this will damage the
• See "7. I/O connections" in Chapter 3 for a definition of NPN and PNP
3
NPN specifications
4
5
6
PNP specifications
7
8
9
10
6-8
Chapter 6 PARALLEL I/O INTERFACE
parallel as a surge killer.
the internal circuitry.
internal circuitry.
specifications.
Photocoupler
(PS2801 or equivalent)
NPN Darlington transistor
(2SD2195 or equivalent)
Controller side
PNP Darlington transistor
(2SB1580 or equivalent)
Photocoupler
(PS2801 or equivalent)
Controller side
DC24V
DO20 to DO27
External power
supply DC 24V
GND
DC24V
External power
supply DC 24V
DO20 to DO27
GND