User Documentation

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FAULT: The two middle contacts of the

6-contact terminal block connector are

used to detect both power faults and port

faults. The two wires attached to the Fault

contacts form an open circuit when:

1. Ethernet Switch has lost power from

one of the DC power inputs.

2. The PORT ALARM DIP switch for one

of the ports is set to ON, but the port is

not connected properly.

If neither of these two conditions is

satisfied, the Fault circuit will be closed.

Wiring the Redundant Power Inputs

The top two contacts and the bottom two contacts of the 6-contact

terminal block connector on the Ethernet Switch top panel are used for

the Ethernet Switch DC inputs. Top and front views of one of the

terminal block connectors are shown here.

STEP 1: Insert the negative/positive

DC wires into the V-/V+ terminals.

STEP 2: To keep the DC wires from

pulling loose, use a small flat-blade

screwdriver to tighten the wire-clamp

screws on the front of the terminal

block connector.

STEP 3: Insert the plastic terminal

block connector prongs into the

terminal block receptor, which is

located on switch´s top panel.

ATTENTION

Before connecting the Ethernet Switch to the DC power

inputs, make sure the DC power source voltage is stable.