
3. External Connection
34
DIO-1616RL-PE, DIO-3232RL-PE
Connecting Output Signals
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
* Output pin represents O-xx.
Figure 3.8. Output Circuit
The output circuits of interface blocks of the DIO-1616RL-PE, DIO-3232RL-PE are illustrated in
Figure 3.8. The signal output section is an opto-coupler isolated output (current source type). Driving
the output section requires an external power supply.
The rated output current per channel is 100mA at maximum.
To protect against surge voltage, a Zener diode is connected to the output transistor. Also, an
overcurrent protection circuit is attached to a unit of eight output channels.
When the PC is turned on, all output are reset to OFF.
External device
Plus
common
Output
pin
Board
External
power supply
12 - 24VDC
Output
pin
Vcc
Zener
diode
Over current
protection
Optocoupler
Optocoupler
Load
Load
Zener
diode
CAUTION
Содержание DIO-1616RL-PE
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