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Manual – MOVI-PLC® advanced DHR41B for EtherNet/IP, Modbus/TCP and PROFINET IO
4
Shielding and routing bus cables
Assembly and Installation Notes for Ethernet
DHR41B - Ethernet connection
To connect DHR41B to the Ethernet, connect the Ethernet interface X30-1 or X30-2
(RJ45 plug connector) to the other network stations using a category 5, class D twisted-
pair cable in accordance with IEC 11801 edition 2.0. The integrated switch provides sup-
port for realizing a line topology and offers auto crossing functions.
4.3
Shielding and routing bus cables
Only use shielded cables and connection elements that also meet the requirements of
category 5, class 2 in compliance with IEC 11801 edition 2.0.
Correct shielding of the bus cable attenuates electrical interference that can occur in in-
dustrial environments. The following measures ensure the best possible shielding:
• Manually tighten the mounting screws on the connectors, modules, and equipotential
bonding conductors.
• Use only connectors with a metal housing or a metalized housing.
• Connect the shielding in the connector over a wide surface area.
• Apply the shielding of the bus cable on both ends.
• Route signal and bus cables in separate cable ducts. Do not route them parallel to
power cables (motor leads).
• Use metallic, grounded cable racks in industrial environments.
• Route the signal cable and the corresponding equipotential bonding close to each
other using the shortest possible route.
• Avoid using plug connectors to extend bus cables.
• Route the bus cables closely along existing grounding surfaces.
TIPS
• According to IEC 802.3, the maximum cable length for 10/100 MBd Ethernet
(10BaseT / 100BaseT), e.g. between two network stations, is 100 m.
• We recommend that you do not directly connect non-SEW end devices to the
DHR41B option in order to minimize the load on the end devices in EtherNet/IP net-
works caused by undesired multicast data traffic. Connect non-SEW devices via a
network component that supports the IGMP snooping functionality (e.g. managed
switch).
CAUTION
In case of fluctuations in the ground potential, a compensating current may flow via the
bilaterally connected shield that is also connected to the protective earth (PE). Make
sure you supply adequate equipotential bonding according in accordance with relevant
VDE regulations in such a case.
Содержание DHR41B
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