6-2
156527-1CD
HW1480826
I/O Expansion European
Standard (PNP)
6 I/O Circuits
6.2 Output Circuits
6.2
Output Circuits
The output circuit has 40 points from CN10 through CN13. Two types of
circuits are provided: transistor output (24 points) and relay output (16
points). When the contact life of a relay should be considered because of
frequent ON/OFF switchings, the transistor output can be used to control
a relay mounted on an easily accessible position or a non-contact relay
SSR (solid state relay).
6.2.1
Output Circuit 1 CN12 and CN13 (Transistor Output)
Connection example
NOTE
When connecting an inductive load to the output circuit,
connect a fly-wheel diode in parallel to the inductive load, to
suppress the surge voltage. Not using a fly-wheel diode
may damage the output circuit.
When connecting a load with a large inrush current such as
a lamp, connect a current limiting resistance in series to the
load, so that the output current does not exceed its
maximum value. Exceeding the maximum output current
value may damage the output circuit.
Circuit structure
PNP transistor open-collector output
Output current (max.)
50 mA per one point
Common
0V common
+24VU
LED
024VU
024VU
Inside the board
Photocoupler
Internal
circuit
i (50mA max.)
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