HBM PAD4002A - Page 24

Electrical connection
22 A4243-1.0 HBM: public PAD4002A
Pin RS-485 CANopen
1 GND GND
2 I/O 2 I/O 2
3 RA CAN High IN
4 I/O 1 I/O 1
5 RB CAN Low IN
6 TB CAN Low OUT
7 TA CAN High OUT
8 12 … 30V 12 … 30V
Suitable connection cables and the color code used can
be found in the HBM data sheet "Cables with a plug",
B3644.
Please note:
S With the CAN interface, you must use a cable with a
characteristic impedance of approx. 120Ω. HBM
cable 1-KAB173 meets these requirements and also
has the same protection class (IP68/69K) as the PAD
housing.
S The housing of the PAD is connected to the cable
shield by the connector socket. To obtain an EMC-
compliant connection (EMC = electromagnetic com
patibility), the shield of this cable must be connected
to the housing of the connected electronics or to
ground potential. A direct, low-ohm contact must be
made with the shield, by EMC-compliant plug connec
tions, for example.
S Should it be necessary, a separate cable can be used
to establish potential equalization between the elec
tronics and the (PC/PLC) master (grounding concept).
You must not use the cable shield for this potential
equalization.