Contec ADI12-16(PCI), User Manual, Page: 55 / 95

3. External Connection
48
ADI12-16(PCI)
Connecting the output signal
To the digital output signal and control signal (Sampling Clock Output) pins, connect a relay controller
or a current driven control device such as a LED. Output circuit is as follows. +Common Out /
-Common Out is common to individual output signals. Output current rating is 100 mA (Max.) per
1 point and 2 A per 1 common.
The output transistor is not associated with a surge voltage protection circuit. When the output signal
is used to drive the inductive load to a relay or lamp, apply surge protection to the load side.
Figure 3.14. Output Circuit
Table 3.2 Internal logic and output signal
Internal logic Output trangistor Output signal
0 OFF High
1 ON Low
For using the sampling clock output signal, set the sampling clock to at least 4 milliseconds, or
normal output may not be obtained.
10k Ω
External circuit
+Common Out
Output pin
*
*
Board
External power supply
12 - 24VDC
VCC
Load
-Common Out
Load
Output pin
10k Ω
1k
Ω
1k
Ω
CAUTION