CMX-PS POWER SUPPLY UNIT
E1110A.DOC
Data and design subject to change without notice. Supply subject to availability
© Copyright by CERBERUS AG, CH-8708 Männedorf, Switzerland 1995
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8 CMX-PS Power supply unit
The CMX-PS is a power supply unit designed to be used with Cerberus Dati CMX units. The CMX-PS is a compact,
modular and reliable uninterruptible power supply with two sealed batteries included. CMX-PS switches automatically to
battery supply when the main goes off if the front panel switch was set ON. The switch on the front panel enables/
disables battery intervention. The switch must be set OFF when the power supply unit is not operating (e.g. it is kept in
stock) to avoid batteries damage.
When battery operation is enabled the front panel LED marked BATTERY ON shows this status. A red LED (marked
LOW BATTERY) lights on when the battery level is low. A green LED (marked POWER ON) shows the main (220 V)
presence.
A single CMX-PS can power up to 4 CMXs. If more than one CMX-PS is installed, they must be left floating (i.e. not
grounded) in order to avoid problems with ground currents.
Both input and output fuses are located on the front panel, for fast maintenance interventions.
The CMX-PS has standard Europe-format dimension and it can be mounted either in the box along with up to 3 CMXs
(CMX-RM) or in a standard 19" rack or using the metal housing provided with CMX-PS.
Fig. 8.1
