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Images in this section show a 24-channel panel
(ERP24-FT).
1. Turn off power to the relay panel.
2. Remove the four screws securing the front panel
to the ERP-FT.
3. Fold down the User Interface panel, taking care
to leave all wire harnesses connected. This panel
has two tabs that, when inserted, provide
additional support for the fold-down panel.
4. Align the option card to the mounting studs
located to the left of the User Interface.
5. Use the four screws provided to secure the
option card to the mounting studs.
Connect Wiring
The contact input card provides four bus connections for termination of up to 24 individual dry
contact inputs. A screw connector is provided for each input and accepts 0.5–4 mm
(18–12 AWG) Class 2 wire. Each connector is labeled to assist in relay referencing during
termination.
Termination
I/O Board
1. Pull wire from the device supplying the contact closure into the Echo Relay Panel, per the
wire entry plan. See
2. Strip the insulation from each wire pair back 6 mm (1/4 in).
3. Remove the pluggable screw connector header on the Contact Input board.
4. Using a 3 mm (1/8 in) flatblade screwdriver, loosen the terminals and insert each of the
data + and data - wire set into the appropriate terminal for the circuit.
Data wires in the set are polarity independent.
•
Connectors are labeled for termination reference.
•
5. Tighten each screw terminal until the wire is held snug.
6. Repeat steps 4 and 5 for the remaining dry contact closures.
36
Removable Header
(typical of 4)
Screw Terminals
(data+/ data-)
Inputs
Inputs
Inputs
1–6
7–12
13–18
Cable Routing and Conduit Access on page 13
Inputs
19–24
Relay Panel Feedthrough Installation Manual
User
Interface
Insert
tabs
2
.
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