- 10 -
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-405A/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.
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:
A relay warning event is triggered.
OR
The EDS-405A/408A is the Master of this Turbo
Ring, and the Turbo Ring is broken.
OR
There is a 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-405A/408A’s top panel are used for
the EDS-405A/408A’s two DC inputs. Top and front views of one of the
terminal block connectors are shown in the following figures:
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.
ATTENTION
Before connecting the EDS-405A/408A to the DC power inputs,
make sure the DC power source voltage is stable.
