Advantech EKI-2728MI, Руководство пользователя

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2.4 Network Connection
The EKI-2728MI has 6 x RJ-45 and 2 Fiber ports that support connection to 10 Mbps
Ethernet, 100 Mbps Fast Ethernet, or 1000 Mbps Gigabit Ethernet, and half or full
duplex operation. EKI-2728MI can be connected to other hubs/switches through a
twisted-pair straight-through cable or a crossover cable up to 100m long. The
connection can be made from any TX port of the EKI-2728MI (MDI-X) to another hub
or switch either MDI-X or uplink MDI port.
The EKI-2728MI supports auto-crossover to make networking more easy and flexible.
You can connect any RJ-45 (MDI-X) station port on the switch to any device such as a
switch, bridge or router.
2.5 Power Connection
The EKI-2728MI supports dual +12 ~ 48 V
DC
and 24 V
AC
power inputs and power-fail
relay output.
Terminal Block Front View for Fault Alarm
Contact
Fault Alarm Application Example
24Vdc, 1A
Resistance
Figure 2.8: Pin Assignment of the Power Connector
You can connect an alarm indicator, buzzer or other signaling equipment through the
relay output. The relay opens if power input 1 or 2 fails (‘Open’ means if you connect
relay output with an LED, the light would be off).
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