BUS datasheet(33/42 Pages) BURKERT

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Type büS

Best practice instructions

12.9

Power consumption

It is important to consider the power consumption of a device as early as possible in the planning. Using

the information about the total power consumption of the network, the accessories and the number of

power supplies can be planned.

Furthermore, the permitted voltage ripple of a device must be considered. For devices with direct access,

e.g. MFCs, it is important to have a low residual ripple. For sensors, the impact is not that significant.

12.10

Grounding power supplies

Power supplies should not be earthed, but it is important to ensure galvanic isolation. Otherwise, huge

loops may develop that can have a negative impact on the entire network.

12.11

Shielding of büS network

Provide good, continuous functional earth (FE) with low impedance and noise. If this cannot be ensured in

the area of the büS network, use a low-impedance metallic cable duct or bypass conductor grounded on

both sides to prevent compensation currents over büS shield.

Connect devices of the internal shielding "None" directly to the büS strand (without stitch). The shielding

must be on upstream or downstream devices in the network, but at least on end devices.

Connect at least one point of büS shield directly to FE (e.g. by using a device with direct FE connection to

shield).

Keep a distance from H-Field emitting machines with high power consumption. If not possible, use metal

duct grounded on both sides or multiple times for additional shielding of the büS cable .

BUS датащи(PDF) 33 Page - Christian Bürkert GmbH & Co. KG