PEP CP380, Manual

Page: 22 / 68

CP380 Introduction
ID 19313, Rev. 0100 Page 1 - 12 ® PEP Modular Computers GmbH
1.8 Optocouplers
Figure 1-7: Output/Input Wiring of
the CP380 Optocouplers
1.8.1 External Power for the Optocouplers
In order to run the boards properly, an external power supply is required. The power
input pins on the D-sub connector are labelled “ext.V+“ and “ext.GND“ (see Chapter 3,
Section 3.2 on page 3-3). The inputs and outputs of the CP380-I, CP380-O and CP380-
I/O can be powered typically with 24V signals. The interrupt inputs of the CP380-I and
CP380-I/O trigger on a falling edge. The external supply voltage can be anywhere from
20V to 28V so small variations in the voltage will have no effect on the board.
Output Wiring (CP380-O and CP380 I/O)
Input Wiring (CP380-I and CP380 I/O)
Line diode
Output line
V+
Line diode
Input line
+5V
TTL
R
GND