ABB MicroFlex e150, Руководство пользователя

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78 Electrical installation: input / output

Ethernet connectors
Location: E1 & E2
Ethernet port E2 (IN) is fixed in EtherCAT mode. To set port E1 (OUT) to EtherCAT
mode, front panel DIP switch 4 (page
79
) must be in the off position. If only one port is
used for EtherCAT operation, it must be the E2 (IN) port.
To connect the MicroFlex e150 to other EtherCAT devices use CAT5e Ethernet
cables - either S/UTP (unshielded screened/foiled twisted pairs) or preferably S/FTP
(fully shielded screened/foiled twisted pairs). To ensure CE compliance, Ethernet
cables longer than 3 m should be S/FTP cables bonded to the metal backplane at
both ends using conductive clamps. Cables can be up to 100 m (328 ft) long. Two
varieties of CAT5e cable are available; ‘straight’ or ‘crossed’. Straight cables have the
TX pins of the connector at one end of the cable wired to the TX pins of the RJ45
connector at the other end of the cable. Crossover cables have the TX pins of the
connector at one end of the cable wired to the RX pins of the RJ45 connector at the
other end of the cable.
Recommended cables are listed in
Ethernet cables
on page
172
. Crossover or
straight cables can be used. Many Ethernet devices, including hubs and ABB e100 /
e150 products, incorporate Auto-MDIX switching technology which automatically
compensates for the wiring of straight cables.
The MicroFlex e150 Ethernet interface is galvanically isolated from the rest of the
MicroFlex e150 circuitry by magnetic isolation modules incorporated in each of the
Ethernet connectors. This provides protection up to 1.5 kV. The connector/cable
screen is connected directly to the chassis earth of the MicroFlex e150.
The EtherCAT interface supports the 100Base-TX (100 Mbit/s) speed.