
3. External Connection
PIO-32/32B(PCI)V
33
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 represent output signals.
Figure 3.6. Output Circuit <PIO-32/32B(PCI)V>
The output circuits of interface blocks of the PIO-32/32B(PCI)V are illustrated in Figure 3.6. The
signal output section is an opto-coupler isolated, open-collector output (current sink type). Driving the
output section requires an additional power supply isolated from the PC system. The board offers you
an on-board isolated 12VDC power supply in option.
The rated output current per channel is 100 mA 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 0.5 V or less at an output current within 50 mA or at most 1.0 V at an output current within 100 mA.
A zener diode is connected to the output transistor for protection from surge voltages. 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.
Vcc
*
*
JP6/JP8
+12V
JP7/JP9
External device
Plus
common
Board
External
power supply
12 - 24VDC
Output
pin
Optocoupler
Load
Zener
diode
Output
pin
Load
Zener
diode
Optocoupler
Minus
common
Over current
protection
Содержание PIO-32/32B(PCI)V
Страница 1: ...PC HELPER Digital I O Board with Opto Isolation for PCI PIO 32 32B PCI V User s Guide CONTEC CO LTD...
Страница 7: ...vi PIO 32 32B PCI V...
Страница 17: ...1 Before Using the Product 10 PIO 32 32B PCI V...
Страница 43: ...3 External Connection 36 PIO 32 32B PCI V...
Страница 47: ...4 Function 40 PIO 32 32B PCI V...
Страница 53: ...5 About Software 46 PIO 32 32B PCI V...
Страница 58: ......