Ver.1.11
PIO-32/32RL(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
12 - 24VDC
Output
pin
Vcc
Zener
diode
PolySwitch
Optocoupler
Optocoupler
* Output pin represents O-xx.
Load
Load
Zener
diode
The output circuits of interface blocks of this board are
illustrated in the image above. The signal output section is an
Optocoupler isolated, current source output type. Driving the
output section requires an external power supply.
The rated output current per channel is 100mA at maximum.
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)
Output plus common (CN1 : B19pin)
External
power supply
12 - 24VDC
5k
Ω
LED
Bo
ar
d si
de
When outputting 1 to the corresponding bit, LED is ON.
When outputting 0 to the corresponding bit, by contrast, LED is off.
+
-
Connecting Output Signals
