ETC Unison Heritage Rackmount Contact Interface - Manual (Page 3)

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 3 of 3 Electronic Theatre Controls, Inc.
Step 3: Terminate chassis ground.
a: Strip 7/16” (11mm) from the end of each chassis ground wire.
b: Loosen the terminal screw on a green/yellow terminal block. The green/yellow
terminal blocks are located at both ends of the terminal strip.
c: Insert the ground wire and tighten the screw firmly onto the wire.
Step 4: Terminate contact wires. All contact input and output terminations are made to the
removable pluggable connectors on the control PCB. When terminating a switch to a
Contact Interface, each pair of terminations, either Switch In or Switch Out, requires one
switch and one common connection.
a: Strip 1/4” (7mm) from the ends of each wire.
b: Remove the connector from the control PCB.
c: Loosen the terminal screw for each required termination.
d: Insert the wires into the corresponding terminal block number and tighten the screws
firmly onto the wires.
N o t e : There are only two Common terminals available for Contact Inputs and each Common
terminal allows up to two conductors. Additional connections should be bussed
together to share the line using WAGO CAGE CLAMP
®
connectors as required.
NC.NO. COM NC.NO. COM NC.NO. COM NC.NO. COM
1 2 3 4
NC. NO. COM NC. NO. COM NC. NO. COM NC. NO. COM
5 6 7 8
1 2 3 4 5 6 7 8
Contact Inputs COM
factory wiring
to input
terminals
Contact Outputs
1 - 4
Contact Outputs
5 - 8
Contact Inputs
1 - 8 plus
Commons