7/03
IO-DI8-RO4, IO-DI8-RO4-L
I / O E x p a n s i o n M o d u l e s
Unitronics Industrial Automation
5
Digital I/Os
Inputs may be wired as either pnp (source) or npn (sink) inputs.
npn (sink) inputs
pnp (source) inputs
0V
+V
Circuit Protection Device
0V
+V
npn (sink)
high-speed counter/frequency measurer
pnp (source )
high-speed counter/frequency measurer
0V
+V
Circuit Protection Device
High-speed
Counter
Reset
High-speed
Counter
0V
+V
High-speed
Counter
Reset
High-speed
Counter
Wiring the Output’s Power Supply
Outputs
Wiring DC supply
1.
Connect the "positive" cable to the "+V0"
terminal, and the “negative” to the "0V"
terminal.
A non-isolated power supply can be used
provided that a 0V signal is connected to
the chassis.
Do not connect the ‘Neutral or ‘Line’
signal of the 110/220VAC to the device’s
0V pin.
In the event of voltage fluctuations or
non-conformity to voltage power supply
specifications, connect the device to a
regulated power supply.
Circuit Protection
Device
Load
L1, L2, L3 (115/230VAC)
+V (12/24VDC)
0V
N
0V
N
N
0V
N
0V
Output's
power supply
0V
+V0
