Notes on EMC
8 Notes on EMC
8.1 Aluminum
version
The CAN bus connected to the CANlink II must have a shielded lead. The shield
braiding is to be laid flat on the connector housing.
The shield connections of CAN1 (X3), CAN2 (X4), serial interface (X2) and power
supply (X1) are connected with one another in the device.
The shield connections of CAN (X3), serial port (X2) and the power supply (X1)
are connected with one another in the device.
8.2 Industrial DIN-rail version – shield concept
The highest interference immunity is achieved when the shield of the CAN bus is
grounded on the assembly plate and the ground terminal (pin 1 / PE) of the CAN-
link II is connected to the next available grounding (see Fig. 8-1). Via parallel con-
nection of a resistor (1 M
Ω
) and a capacitor, the grounding connection is con-
nected internally to the GND of the CAN and of the supply voltage.
CANlink II
CAN
PE
Fig. 8-1: Shield concept CANlink II industrial DIN-rail
Copyright IXXAT Automation GmbH
CANlink II - Manual, V1.3
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