Bronkhorst EtherCAT Manual de usuario descargar pdf (Pagina 11)

BRONKHORST®

3.5 ROUTING AND SHIELDING THE BUS CABLE

Only use shielded cables and connection elements that also meet the requirements of category 5, class 2 according to

IEC11801, edition 2.0.

Correct shielding of the bus cable attenuates electrical interference that may occur in industrial environments. The

following measures ensure the best possible shielding:

• Manual 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 cables on both ends.

• Route signal and bus cables in separate cable ducts. Do not route them parallel to power cables (motor leads)

• Route the signal cable and the corresponding equipotential bonding, if necessary, close to each other using

the shortest possible route.

• Route the bus cable closely along existing grounding surfaces.

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 in such a case.

3.6 BUS TERMINATION

A bus terminator (e.g. using bus terminating resistors) is not necessary. If no follow-up unit is connected to an

EtherCAT unit, this is automatically detected.

3.7 SECOND ADDRESS SETUP

EtherCAT supports the use of a Second Address. Bronkhorst instruments have 3 rotary switches, with which a Second

Address can be set in the range of 0 – 4095 (0xFFF).

This value of the rotary switches will be copied to the Configured Station Alias register (address 0x0012:0x0013) at

instrument start-up.

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Bronkhorst EtherCAT Manual de usuario Pagina 11