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Wiring Considerations
Use crimp terminals for wiring and use 26-12 AWG wire
2
2
(0.13mm
–3.31mm
).
Strip the wire to a length of 7±0.5mm (0.250–0.300").
Do not route input cables together with output cables
through the same multi-core cable or wire.
Use wire that is correctly sized for the load. Allow for
voltage drop and noise interference with extended input
lines.
Note: Connect the adapter 0V and the I/O 0V to the same line.
Daisy Chaining
To facilitate wiring, you can wire the following pins in series (daisy chain). Use both pins provided for this purpose.
Input connector pin: n/p. Output connector pins: +V, 0V, C0, C1.
Ensure that the total current drain on any single line does not exceed 10A. If a specific pin requires more than 10A, connect it with
a separate wire. The following diagram demonstrates the wiring options:
Wiring Inputs
The following diagram shows the input connectors with pin numbers and corresponding LED numbers.
Note: Where input numbers are stated, the intention is the LED number.
Wiring Digital Inputs
Inputs may be wired as either pnp (positive logic) or npn (negative logic).
Inputs 4 and 6 can function as high-speed counters, frequency measurers, or general purpose digital inputs (set in software).
Inputs 5 and 7 can function either as counter reset inputs or general purpose digital inputs (set in software).
For information on connecting RG pins, refer to Connecting RG Pins.
pnp (positive logic) inputs 0-7
npn (negative logic) inputs 0-7
Unitronics
L ED #
0
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
L ED #
8
9
10
11
12
13
Pin #
15 16 17 18 19 20 21 22 23 24 25 26 27 28
IO-D16A3-RO16
Install an external circuit breaker. Guard against
short-circuiting in external wiring.
Do not connect unused pins. Ignoring this directive
may damage the device.
To avoid damaging wires, do not exceed a maximum
torque of 0.5 Nm (5 kgf·cm).
Do not use tin, solder, or any substance on stripped
wire that might cause the wire strand to break.
7
n/p
n/p RG
RG
10
11
12
13
14
Pin #
AI2
AI1 AI0
14
15
pnp (positive logic) inputs 8-15
npn (negative logic) inputs 8-15
2
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