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IO-DI16
I / O E x p a n s i o n M o d u l e
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 I13 I14 I15
P
N
0V
0V
+V
Circuit Protection Device
High-speed
Counter
Reset
High-speed
Counter
pnp (source)
IO-DI1 6
9
8
10 11 12 13 14 15
I7
I6
I5
I4
I3
I2
I1
I0
I8
I9 I10 I11 I12 I13 I14 I15
P
N
0V
P
N
0V
0V
+V
Circuit Protection Device
0V
+V
I8
I9 I10 I11 I12 I13 I14 I15
P
N
0V
0V
+V
High-speed
Counter
Reset
High-speed
Counter
pnp (source) input wiring
(shown in bottom group of inputs)