User Guide | Eclipse HX-Median
One CPU interface card.
One Euro Cassette power supply module of the type fitted to the
matrix.
One of each type of intercom panel in the system.
One of each type of interface in the system.
12.2 Fail-Safe modes
High reliability is one of the main objectives of the Eclipse HX-Median system
design. The following features of the system minimize the effects of a
component failure.
12.2.1 Dual power supplies
The Eclipse HX-Median matrix includes two Euro Cassette power supply units.
One power supply unit can power an entire matrix; the second unit provides a
backup in case of an equipment failure.
In addition, the two supplies have separate IEC connectors to AC mains power,
and are designed for completely automatic and transparent changeover
between supplies in the event of a power failure on one of the AC branches.
To reduce the risk of electric shock, plug each of the power
cords to separate branch circuits with different service
ground.
The power supplies contain an over-temperature sensor that is connected to
both an audible alarm and a warning light, giving the system operator the
necessary forewarning to diagnose and correct any power anomalies while the
system remains operational.
If any individual power supply fails, an alarm can be issued to a remote
location to alert operators that part of a power supply has failed. The failure of
a single supply will issue an alarm, but the Eclipse HX-Median system will
continue to operate normally, powered by the second supply.
12.2.2 Hot patchability
The front panels of CPU cards and interface cards (not rear panels), and all
Euro Cassette power supplies are hot patchable– that is, they can be plugged
in or removed from the matrix while the power is on, and they will be neither
damaged, nor will they cause damage to the system.
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