SEW-Eurodrive DFE24B EtherCAT - Cable Connections and Shielding

Manual – Fieldbus Interface DFE24B EtherCAT®
19
4
Pin assignment X30 IN / X31 OUT
Assembly and Installation Notes
4.5 Pin assignment X30 IN / X31 OUT
Use prefabricated, shielded RJ45 plug connectors to IEC11801 edition 2.0, category 5.
4.5.1 DFE24B – EtherCAT
®
connection
Option DFE24B is equipped with RJ45 two connectors for a linear bus structure. The
EtherCAT
®
master is connected (if necessary, via additional EtherCAT
®
slaves) to X30
IN (RJ45) with a shielded, twisted-pair cable. Additional EtherCAT
®
units are then con-
nected via X31 OUT (RJ45).
4.6 Shielding and routing bus cables
Only use shielded cables and connection elements that also meet the requirements of
category 5, class D according to 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.
3011902475
A View from front
B View from back
[1] Pin 1 TX+ Transmit Plus
[2] Pin 2 TX− Transmit Minus
[3] Pin 3 RX+ Receive Plus
[6] Pin 6 RX− Receive Minus
[3]
[2]
[1]
2
3
6
1
[6]
AB
INFORMATION
In accordance with IEC 802.3, the maximum permitted cable length for 100 MBaud
Ethernet (100BaseT), e.g. between two DFE24B units, is 100 m.