Clear-Com Eclipse HX-Omega, User Manual

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C
Alarm I/O Connector
The DB-9F connector labeled Alarm I/O connects the matrix to a control
circuit for an external alarm, such as a light or bell. The external alarm
activates whenever an alarm condition is detected in the matrix.
The following conditions trigger an alarm:
•
If any of the voltages produced by the first power supply unit fall
below their normal levels.
•
If any of the voltages produced by the second power supply unit fall
below their normal levels.
•
If an external alarm circuit or other logic circuit connected to the
power supply is activated.
•
If either of the two power-supply unit fans stop operating.
•
If software on a master CPU card generates an alarm.
An alarm condition activates the relay contacts connected to pins 4, 5, and
9 . These contacts are “dry”, (no voltage is supplied to them by the matrix)
and are rated at 1 A at 24 VDC . They should not be used for AC mains line
current.
Pins are provided for adding an additional alarm source to the matrix’s
alarm system.
Pin 6 is an alarm input to the Eclipse HX-Median matrix. It is
connected to the input of a 3.3 V logic device.
A logic high on this input will cause the Eclipse HX-Median matrix to detect
an alarm condition. A logic low or an open circuit means that the matrix will
not detect an alarm condition.
Pin 1 is a voltage source out of the Eclipse HX-Median matrix. It is
connected through a 10Kohm pull-up resistor to the +5 V supply rail inside
the Eclipse HX-Median matrix.
A contact closure placed across pins 1 and 6 will also cause an alarm
condition.
Tip: The alarm outputs of the PSU-101 power supply could be wired directly
to these pins allowing the CPU card to report PSU failures also.
Figure 15: Wiring the Alarm I/O DB-9F to the Alarm Relay connector
1
2
9
8
7
6
5
4
3
1
2
3
4
Relay Normally Closed
Relay Wiper
Relay Normally Open
To Alarm
To Alarm
System 200/COM-72
"Alarm I/O" DB-9F
Connector
PSU-101
"Alarm Relay"
Connector
46 Eclipse HX-Median User Guide