DVS Pronto4K, Hardware Manual

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Pronto4K Hardware Guide
2.2.3 Power Supply
The redundant power supply provides the system with power. It con-
sists of several independent power supply units: Even if one fails the
others will still offer enough power to keep the system working.
The following provides an overview of one of the power supply units:
Figure 2-11: Overview of power supply unit
The system can be operated with one power supply unit out
of order. However, if another one fails, a continued operation
of the system cannot be guaranteed. Therefore, it is recom-
mended to change a failed power supply unit immediately
(see section “Power Supply Maintenance” on page 5-10).
To pull out a power supply unit you have to remove the security
bar of the power supply first (see section “Power Supply Main-
tenance” on page 5-10).
power cable socket The socket where the power cable has to be
plugged in to provide the system with power.
handle With the handle of the power supply unit you
can pull the unit out of the power supply once it
is unlocked with the latch.
latch The latch of a power supply unit locks it in the
power supply. By pressing it toward the handle
the unit can be unlocked and pulled out of the
power supply with the help of the handle.
LED The LED indicates the state of the power supply
unit:
green Operating normally
off Standby mode
off (alarm LED on) Disconnected from power
or malfunction
power cable socket handle latch
LED