ETC Unison Heritage Rackmount Contact Interface - Manual (Page 2)

E T C I n s t a l l a t i o n G u i d e
Interface Series
Unison ® Heritage Rack Mount Contact Interface Page 2 of 3 Electronic Theatre Controls, Inc.
Wire Requirements and Specification
Terminate Wiring
Step 1: Terminate LinkPower.
a: Strip 7/16” (11mm) from the ends of each LinkPower wire (typically black and white
twisted pair).
b: Using a jewelers screwdriver, open the ULP+ and ULP- terminals.
c: Insert the (typically white) wire from the pair into the ULP+ terminal.
d: Insert the (typically black) wire from the pair into the ULP- terminal.
e: Tighten each terminal screw firmly to secure the wires in place.
Step 2: Terminate Auxiliary power (24 Vdc) wiring.
a: Strip 7/16” (11mm) from the ends of each Auxiliary power wire (typically a 16 AWG
black and red twisted pair).
b: Using a jewelers screwdriver, open the +24 VDC and Common terminals.
c: Insert the (typically red) wire from the pair into the+ 24 VDC terminal.
d: Insert the (typically black) wire from the pair into the Common terminal.
e: Tighten the terminal screw to secure the wire(s) in place.
Purpose Wire Type Notes
Link Power
(LinkConnect)
control network Belden 8471
(or approved equal) Echelon ® LinkPower ® (LinkConnect) control net-
work utilizes low voltage Class II wire.
Wiring is topology free, polarity independent with a
maximum total system length of 1,640 feet (500m).
Auxiliary power
(24 Vdc) (2) 18 -10 AWG
(0.75 - 6mm
2
)
Chassis Ground 18 - 10 AWG
(0.75-6mm
2
)
Required when wiring is not installed in grounded
metal conduit.
Contact Input and
Contact Output
terminals 24 - 12 AWG
(0.2 - 2.5mm
2 )
Two wires are required per switch (switch in or
switch out and common). Supports up to 1,000 feet
(305m) of 16 AWG (1.5mm
2
) between input and
common.
N o t e : LinkPower is topology free and polarity independent. You can install your LinkPower
wiring in any combination of bus, star, loop, or home-run. If more than one pair of
LinkPower wires are to be terminated be sure to label each pair individually. Each ULP
terminal can accept up to two conductors per terminal.
Ground
ULP-
ULP+
+24VDC
Common
Ground
factory wiring
to LinkPower
on control PCB
factory wiring
to Aux power
on control PCB