Data, Audio, and Ground connections:
1. Wire an OP Data Out to the I/O Expander Data In. Wire the I/O Expander Data Out to the next
OP Data In. See the installation and operations manual for the n.FORM Rack OP for further
wiring of OPs.
2. Wire a ground wire from the I/O Expander “GND” to the previous.
Relay Connection
1. Connect external equipment to the Aux Relays if applicable. Relay R1 (NC and C) is reserved as
a fault indicator. Relay R1 is energized (open) when no fault exists and de-energized (closed)
when a fault is active.
TO NEXT OP
DATA IN
TO FIRST OP
To external
equipment
FROM PREVIOUS OP
DATA OUT
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