Redundant Power Inputs
Both power inputs can be connected simultaneously to live DC power
sources. If one power source fails, the other live source acts as a backup,
and automatically supplies all of the IMC-101’s power needs.
Alarm Contact
The IMC-101 has one alarm contact located on the top panel. For detailed
instructions on how to connect the alarm contact power wires to the two
middle contacts of the 6-contact terminal block connector, see the
“Wiring the Alarm Contact” section above. A typical scenario would be to
connect the Fault circuit to a warning light located in the control room.
The light can be set up to switch on when a fault is detected.
The alarm contact has two terminals that form a Fault circuit for
connecting to an alarm system. The two wires attached to the Fault
contacts form an open circuit when (1) the IMC-101 has lost power from
one of the DC power inputs, or (2) one of the ports for which the
corresponding PORT ALARM Dip Switch is set to ON is not properly
connected.
If neither of these two conditions occurs, the Fault circuit will be closed.
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