Hardware manual

AH500 Hardware Manual
5-39
5.5.2 Wiring Digital Output Terminals
5.5.2.1 Output Circuits
There are three types of output units. They are relay outputs, transistor outputs, and TRIAC outputs.
1. Relay output
Load through which the
alternating current flows
AC power supply
I/O relay output
2. Transistor output
Load through
which the direct
current flows
DC power supply
Z
P
Y0.0
UP
+
NPN transistor output (sinking)
Load through
which the direct
current flows
Z
P
Y0.0
UP
+
DC power supply
PNP transitor output (sourcing)
3. TRIAC output
Load through which the
alternating current flows