Dio, Can, Ext. Power Switch - Onlogic Karbon 800 Series Product Manual

2.2 - DIO, CAN, Ext. Power Switch

The Karbon 800 series 20-Pin header provides the following interfaces: 8-bit (4-in, 4-out) Digital Input
Output (DIO) or General Purpose Input Output (GPIO) with optically isolated terminals, one CAN bus
connection, and an optional external power switch connection.
The DIO is optically isolated, meaning that the terminal is separated from other motherboard features
for protection. The DIO terminal requires external power from a
GND to Pin 19 in order to function.
The Isolated Power Supply (ISO PSU) can be a voltage source from 5~48V to interface with external
digital IO. The maximum power draw from the supply should not exceed 0.6A under normal operating
conditions. Individual DOut pins will be damaged by loads in excess of 150mA. The ISO PSU must be
a DC Limited Power Source (LPS) power supply.
Mating power switch cables should be a twisted-pair wire with floating shield to assure proper
immunity to EMI/RFI. It is recommended to keep wires at less than 3 meters in length. Any remote
power switch connected between pins 1 and 2 should be momentary contact type only.
5~48V DC source through Pin 20 with
Pin Definition Pin
1 SW+
3 GND
5 GND
7 GND
9 GND 10
11 In0 12
13 In1 14
15 In2 16
17 In3 18
19 V_DIO- 20
Definition
2 GND
4 GND
6 CANH
8 CANL
GND
Out0
Out1
Out2
Out3
V_DIO+
16