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Grounding the EtherDevice Switch
Grounding and wire routing help limit the effects of noise due to
electromagnetic interference (EMI). Run the ground connection from the
ground screw to the grounding surface prior to connecting devices.
ATTENTION
This product is intended to be mounted to a well-grounded
mounting surface, such as a metal panel.
Wiring the Relay Contact
The Relay Contact consists of the two middle contacts of the terminal block on
the EDS-408A’s top panel. Refer to the next section for detailed instructions on
how to connect the wires to the terminal block connector, and how to attach the
terminal block connector to the terminal block receptor.
In this section, we explain the meaning of the two contacts used to connect the
Alarm Contact.
Relay
Relay
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. A relay warning event is triggered.
OR
2. The EDS-408A is the Master of this Turbo
Ring, and the Turbo Ring is broken.
OR
3. Start-up failure.
If none of these three conditions is satisfied, the
fault circuit will remain closed.
Wiring the Redundant Power Inputs
The top two contacts and the bottom two contacts of the 6-contact terminal
block connector on the EDS-408A’s top panel are used for the EDS-408A’s
two DC inputs. Top and front views of one of the terminal block connectors are
shown in the following figures:
PWR1
PWR1
V1+ V1- V2+ V2-
V1+ V1- V2+ V2-
PWR2
PWR2
STEP 1: Insert the negative/positive DC wires
into the V-/V+ terminals, respectively.
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 the
EDS-405A/408A’s top panel.
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