Shielding; Cable Colors; Fig. 22 Structure Of Can/Devicenet Cable Zb5200 - Beckhoff EL6751 Documentation

Mounting and wiring
Fig. 22: Structure of CAN/DeviceNet cable ZB5200
3.9.6

Shielding

The screen is to be connected over the entire length of the bus cable, and only galvanically grounded at one
point, in order to avoid ground loops.
The design of the screening, in which HF interference is diverted through R/C elements to the mounting rail
assumes that the rail is appropriately earthed and free from interference. If this is not the case, it is possible
that HF interference will be transmitted from the mounting rail to the screen of the bus cable. In that case the
screen should not be attached to the couplers - it should nevertheless still be fully connected through.
Notes related to checking the CAN wiring can be found in the Trouble Shooting [} 173] section.
3.9.7

Cable colors

Suggested method of using the Beckhoff CAN cable on Bus Terminal and Fieldbus Box:
BK51x0 pin Pin BK5151
PIN BX5100 (X510)
CX8050, CX8051,
CXxxxx-B510/M510
1 3
2 2
3 5
4 7
5 9
30
Fieldbus Pin Function
Box pin FC51xx
3 3 CAN Ground black/ (red)
5 2 CAN Low
1 5 Shield
4 7 CAN high
2 9 not used
Version: 3.5
ZB5100 cable ZB5200 ca-
color ble color
black
black blue
Filler strand Filler strand
white white
(red) (red)
EL6751