Specifications

52 Chapter 6
Cabling the XMU+
Connecting Alarms (optional)
The XMU+ provides two output alarm contacts and two input alarm contacts, all of
which are accessed through the contact pinout on the Control card.
Record the alarm option chosen (connector or override switch) in The XMU+ Delivery
Checklist on page 21.
This alarm
contact...
Is used to...
For more
information...
Output 1 Trigger an external device (a light or a
buzzer) in the event of a system failure,
such as input power loss or
microprocessor failure.
See To w ire the
alarm connector on
page 53 for more
information).
Output 2 Trigger an external device or monitor in
the event that one of the two power
supplies fails (this feature only on an
XMU+ large chassis unit with a dual power
supply).
See To w ire the
alarm connector on
page 53 for more
information).
Input 1 Connect the optional override switch
feature. When connected to the XMU+, the
override switch allows regular
programming to be overridden by a pre-
recorded message in case of an emergency.
See the XMUCOM+
application to
program override
messages.
Input 2 Reserved for future use. Information not yet
available for this
future feature.