Ver.1.12

Ver.1.10

PIO-32/32H(PCI)H

4

Connect the output signals to a current-driven controlled device

such as a relay or LED.

The connection requires an external power supply to feed

currents.

The board controls turning on/off the current-driven controlled

device using a digital value.

Output Circuit

External device

Plus

common

Output pin

Board

External

power supply

24 - 48VDC

Minus

common

Output pin

Vcc

Load

Zener

diode

Zener

diode

PolySwitch

Optocoupler

Optocoupler

*

*

Load

* Output pin represents output signals.

The output circuits of interface blocks of this board are

illustrated in the image above.

The signal output section is an

Optocoupler isolated, open-collector output (current sink type).

Driving the output section requires an external power supply.

The rated output current per channel is 100mA at maximum.

The output section can also be connected to a TTL level input

as it uses a low-saturated transistor for output.

The residual

voltage (low-level voltage) between the collector and emitter

with the output on is 0.5V or less at an output current within

50mA or at most 1.0V at an output current within 100mA.

A zener diode is connected to the output transistor for

protection from surge voltages.

A PolySwitch-based

overcurrent protector is provided for every eight output

transistors.

When the overcurrent protector works, the output

section of the board is temporarily disabled.

If this is the case,

turn of the power to the PC and the external power supply and

wait for a few minutes, then turn them on back.

CAUTION

When the PC is turned on, all output are reset to OFF.

Connection to the LED

O-40 (CN1 : B03pin)

LED

5.1k



Output plus common (CN1 : B19pin)

Output minus common (CN1 : B01pin)

When "1" is output to a relevant bit, the corresponding LED comes on.

When "0" is output to the bit, in contrast, the LED goes out.

External

power supply

24 - 48VDC

+

-

Example of Connection to TTL Level Input

Output plus common

Output

Output minus common

TTL level input

VCC

Input board

GND

2k



External

power supply

24 - 48VDC

+

-

The following example shows a connection between a sink

type output (output board) and a sink output support input

(input board).

Refer to this connection example when you

connect such boards to each other.

External

power supply

24 - 48VDC

+

-

Output board

Output plus common

Output (sink type)

Output minus common

Input (Compatible with sink output)

Input plus common

Input board

Connecting Output Circuit

Connecting the Sink Type Output and

Sink Output Support Input

Connecting Output Signals