WDR-3124A
Introduction
1-12
Wiring the Redundant Power Inputs
The top two pairs of contacts of the 10-contact terminal block connector on the WDR-3124A’s top panel are
used for the WDR-3124A’s two DC inputs. Top and front views of the terminal block connector are shown here.
1.
Insert the negative/positive DC wires into the V-/V+ terminals.
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.
3.
Insert the plastic terminal block connector prongs into the terminal block receptor,
which is located on the WDR-3124A’s top panel.
ATTENTION
Before connecting the WDR-3124A to the DC power inputs, make sure that the DC power source voltage is
stable.
Wiring the Relay Contact
The WDR-3124A has one relay output, which consists of the two contacts of the terminal block on the
WDR-3124A’s top panel. Refer to the Specification section for detailed electrical requirement. The relay
contacts are used to indicate user-configured events. The two wires attached to the relay contacts form an
open circuit when a user-configured event is triggered. If a user-configured event does not occur, the relay
circuit will be closed.
Wiring the Digital Inputs
The WDR-3124A has two sets of digital inputs—DI1 and DI2. Each DI comprises two contacts of the 6-pin
terminal block connector on the WDR-3124A’s top panel. Refer to the Specification section for detailed
information on isolated digital input definition.
Summary of Contents for WDR-3124A
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