Clear-Com HX System Frames - Manual (Page 67)

5.7.1 Conditions that cause an alarm
The following conditions trigger an alarm:
• If any of the voltages produced by the first power supply unit fall below normal levels.
• If any of the voltages produced by the second power supply unit fall below normal
levels.
• If an internal matrix alarm condition activates a matrix relay to turn on an external
alarm.
• If the active CPU card exceeds a temperature threshold.
• If either of the CPU cards is removed from the matrix.
• If either of the matrix’s two cooling fans stop operating.
• If the temperature inside the Eclipse matrix exceeds a set threshold.
5.7.2 Main alarm light
An alarm condition triggers the following events:
• The
red main alarm light flashes.
• The matrix’s internal alarm buzzer sounds.
Any installed alarm relay outputs switch to active (the normally open contact closes and the
normally closed contact opens). When the alarm relay activates, it can cause an externally
connected device like a light or buzzer to switch on.
One of the six auxiliary red alarm lights may go on, to more precisely indicate the source
of the alarm condition (see 5.7.4 Auxiliary alarm lights ).
67 Eclipse HX-Median User Guide