Praesideo 3.5 Installation and User Instructions EN54-16: 2008

en 54

Clause / Requirement

Compliance

Signature

13.14 Redundant power amplifiers

Praesideo is compliant.

 

(option with requirements)

 

 

13.14.1 The VACIE may have provision for at least one

Each power amplifier channel of the Praesideo system has

 

spare power amplifier. In this case:

an input for connecting a spare amplifier channel. It also

 

 

contains a switch-over relay to switch the loudspeaker load

 

 

from the original amplifier output to the spare amplifier

 

 

output. A spare amplifier channel assignment is

 

 

configurable to multiple main amplifier channels.

 

a in the event of the failure of a power amplifier, the faulty

After fault detection of an amplifier all loudspeaker lines are

 

amplifier shall be capable of being replaced

switched automatically to the spare amplifier (if connected

 

automatically with a spare amplifier within 10 s of the

and configured) within 10 s.

 

fault being detected;

 

 

NOTE - This can be achieved, for example, by switching or

 

 

by permanently connected parallel amplifiers.

 

 

b the spare power amplifier(s) shall have at least the

Each power amplifier channel of the Praesideo system has

 

same functionality and output power as the replaced

a spare amplifier input. The installer shall take care of

 

amplifier.

proper installation and configuration of the amplifiers to

 

 

match amplifier power and number of channels per

 

 

amplifier. Praesideo takes care of input signal switching to

 

 

the spare amplifier channel, including adaptive sound

 

 

processing. This way the spare power amplifier(s) will have

 

 

the same functionality and output power as the replaced

 

 

amplifier.

 

13.14.2 Every fault of an amplifier shall be indicated by a

All Praesideo power amplifiers are supervised for overload,

 

general fault warning indicator as specified in 8.2

overheating, short-circuit, ground short and amplifier

 

 

defect. If any such fault is detected it is indicated both by

 

 

means of the general fault warning indicator and by means

 

 

of an individual fault report.

 

13.14.3 Supervision of the spare amplifier(s) shall be

The spare amplifiers can be continuously supervised,

 

maintained during the functional condition whilst the VACIE

whether it is in idle or active state; this is configurable.

 

is powered by either the mains or standby power supplies.

The supervision is active whilst the Praesideo system is

 

 

 

 

powered by either the mains or standby power supplies.

 

Bosch Security Systems 2011-02

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Image 54
Bosch Appliances 3.5 manual Contains a switch-over relay to switch the loudspeaker load
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