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Arrester Accessories
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SA-NMNF-01:
Surge arrester, N-type (male) to N-type (female)
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SA-NFNF-01:
Surge arrester, N-type (female) to N-type (female)
Wiring the Redundant Power Inputs
The top two pairs of contacts of the 10-contact terminal block connector
on the AWK-3121’s top panel are used for the AWK-3121’s two DC inputs.
Top and front views of the terminal block connector 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 the AWK-3121’s top
panel.
ATTENTION
Before connecting the AWK-3121 to the DC power inputs, make
sure the DC power source voltage is stable.
Wiring the Relay Contact
The AWK-3121 has one relay output, which consists of the two contacts of
the terminal block on the AWK-3121’s top panel. Refer to the previous
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. These 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 AWK-3121 has two sets of digital input—DI1 and DI2. Each DI
comprises two contacts of the 10-pin terminal block connector on the
AWK-3121’s top panel. You can refer to the “Wiring the Redundant Power
Inputs” 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.
Cable Holder Installation (Optional)
You can attach the cable holder to the bottom of the AWK-3121. This
helps to keep cabling neat and avoid accidents that result from untidy
cables.
