ETC Installation Guide
Contact and Demand Response Interfaces
Echo Contact and Demand Response Interfaces
Page 4 of 8
ETC
Terminate Wiring
Connect Auxiliary 24 VDC
An external 24 VDC (Class 2) auxiliary power supply is required to power the
interface. Terminate to the interface terminals labeled 24 VDC. Terminals
accept 24-12 AWG (0.2-4 mm
2
) wires (typically a 16 AWG black and red
wire pair).
1:
Strip 3/8” (9-10 mm) of insulation from the end of each wire.
2:
Loosen the two 24 VDC screw terminals.
3:
Insert the negative voltage wire (black wire typical) into the terminal
labeled “-” and insert the positive voltage wire (red wire typical) into
terminal labeled “+”.
4:
Secure the screws firmly onto each wire.
Connect EchoConnect
EchoConnect terminations accept 24-12 AWG (0.2-4 mm
2
) wires for Belden
8471 (or equivalent) between the EchoConnect bus and the Echo interface,
plus one ESD ground wire.
1:
Strip 3/8” (9-10 mm) of insulation from the bare end of the Belden
8471 (or equivalent) wires and the ESD ground wire.
2:
Loosen the three screw terminals (ground, -, +) on the EchoConnect
terminals.
3:
Insert the data + wire (white is typical) into the terminal labeled “+”,
insert the data - wire (black is typical) into the terminal labeled “-”,
and insert the ground wire (green/yellow is typical) into the terminal
labeled .
4:
Secure the screws firmly onto each wire.
Connect Input Wiring (Input Interface and Demand Response)
Terminals accept 24-12 AWG (0.2-4 mm
2
).
Dry Contact Input
1:
Strip 3/8” (9-10 mm) of insulation from each wire.
2:
Loosen the two terminals (“In” and “V out”) for the contact input.
3:
Insert one wire into each terminal then secure the screws firmly onto
each wire.
Wet Contact Input
For a wet contact input into the Input Interface, you must terminate to both
the “In” and the negative “-” terminal of the 24 VDC Auxiliary input.
The “V out” terminal will not be used for this termination.
1:
Strip 3/8” (9-10 mm) of insulation from each wire.
