11/00 IO-DI16 I/O Expansion Module
Unitronics Industrial Automation Systems 5
Input Wiring
Input or output cables should not be run through the same multi-core cable or share the same wire.
Allow for voltage drop and noise interference with input lines used over an extended distance. Use wire
that is properly sized for the load.
Each group of inputs may be wired as either pnp or npn inputs.
npn (sink) input wiring
(shown in top group of inputs)
high-speed counter/frequency measurer
npn (sink)
I8 I9 I10 I11 I12 I1 3 I14 I15PN0V
0V
+V
Circuit Protection Device
High-speed
Counter
Reset
High-speed
Counter
pnp (source)
IO-DI1 6
98 101112 1314 15
I7I6I5I4I3I2I1I0
I8 I9 I10 I11 I12 I13 I14 I15
PN0V
PN0V
0V
+V
Circuit Protection Device
0V
+V
I8 I9 I1 0 I11 I12 I1 3 I14 I15PN0V
0V
+V
High-speed
Counter
Reset
High-speed
Counter
pnp (source) input wiring
(shown in bottom group of inputs)
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