Delta AH02HC-5A, Hardware Manual

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Chapter 5
OOWiring
5.10.4.2 Wiring the Output Terminals
1. The transistor output circuit
Transistor output
Load
T r i
g g
e r
c i r
c u
i t
Y0.8
LED
C0
< 0.5A

Direct-current power supply

Emergency stop

Fuse

The transistor outputs are open collectors. If Y0.8 is a pulse output, the output current passing
through the output pull-up resistor must be larger than 0.1 A to ensure that the transistor
operates normally.
Relay/Solenoid valve through which the direct current passes: A diode is connected in parallel
to absorb the surge voltage which occurs when the load is OFF.

Bulb (incandescent lamp) through which the direct current passes: A thermistor is connected in
series to absorb the surge current which occurs when the load is ON.

Y0.9 can not be connected to the power supply directly. The output wiring has to be connected
to a load.
5-58