Dual, independent power supplies, Power supply alarm output, Hot patchability – Clear-Com LMC-64 User Manual
Page 114: Onboard processors, Fail-safe communication, Dual, independent power supplies -2, Power supply alarm output -2, Hot patchability” -2, Onboard processors -2, Fail-safe communication -2
Clear-Com
Eclipse Median Instruction Manual
8 - 2
DUAL, INDEPENDENT POWER SUPPLIES
The Eclipse Median 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.
POWER SUPPLY ALARM OUTPUT
Each power supply contains a sensor that is connected to both an
audible alarm and a warning light on the matrix. When a power
supply’s DC output or AC input drops too low, the sensor activates the
matrix’s audible alarm and warning light, giving the system operator
the necessary forewarning to diagnose and correct any power
anomalies while the system remains operational.
The sensor can also activate an external alarm connected to the
matrix, such as a light or bell. 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
Median system will continue to operate normally, powered by the
second supply.
“HOT PATCHABILITY”
All CPU cards, port cards, 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. In addition, the system smoothly
incorporates a newly added card. Sometimes re-inserting a CPU card
can reset the matrix. Replace CPU cards during maintenance down
times if possible.
ONBOARD PROCESSORS
If one analog port card malfunctions, the malfunction will normally
affect only the panels connected to that analog port interface. The
malfunction should not affect any other cards or panels in the system.
In all cases, removing a faulty card affects only the devices connected
to that card.
FAIL-SAFE COMMUNICATION
In the event of a CPU card failure, the second CPU card takes over
operation of the system, while the first card is repaired or replaced.