ETC Unison DRd Dimming Rack Enclosure - Manual (Page 43)

4
Terminate Wiring 39
Connect to Contact Inputs and Contact Outputs
The left I/O provides a convenient interface (inputs and outputs) to external devices via
contact closure on removable pluggable connectors. Up to four contact inputs are available
and can be configured for either maintained or momentary operation by the technician
creating the Paradigm architectural configuration. Up to four contact outputs are available
and are preset for normally open operation.
Terminate Contact Inputs
Step 1: Remove the contact inputs removable screw terminal connector located on the
left I/O board. Each connector is labeled for installation convenience.
Step 2: Loosen the desired number of contact input screw terminals and related ground
screw terminals on the connector.
Step 3: Insert contact closure 1 into the terminal labeled “IN1” on the connector and
tighten the screw terminal.
Step 4: Insert the related common wire for contact closure 1 into the terminal labeled
“GND” on the connector and tighten the screw terminal.
Step 5: Repeat for each contact input and ground wire pair (up to four total).
Terminate Contact Outputs
Step 1: Remove the contact outputs removable screw terminal connector located on the
left I/O board. Each connector is labeled for installation convenience.
Step 2: Loosen the desired number of contact output (normal open) screw terminals and
related ground screw terminals on the connector.
Step 3: Insert contact output 1 into the terminal labeled “NO1” on the connector and
tighten the screw terminal.
Step 4: Insert the related common wire for contact output 1 into the terminal labeled
“COM1” on the connector and tighten the screw terminal.
Step 5: Repeat for each contact output and common wire (up to four total).
N o t e : Typical contact I/O wiring is color coded as follows: contact 1 - brown, contact 2 -
orange, contact 3 - yellow, contact 4 - green. All commons and ground voltages
are typically black or red.