Bosch Plena Operating Manual page 183

Plena
Clause / Requirement
13.14.1 The VACIE may have provision for
at least one spare power amplifier. In this
case:
a in the event of the failure of a power
NOTE - This can be achieved, for
example, by switching or by permanently
connected parallel amplifiers.
b the spare power amplifier(s) shall
Bosch Security Systems B.V.
amplifier, the faulty amplifier shall be
capable of being replaced
automatically with a spare amplifier
within 10 s of the fault being
detected;
have at least the same functionality
and output power as the replaced
amplifier.
Installation and Operation manual
Compliance
The Plena Voice Alarm System has
a minimum of one main amplifier
and one call amplifier. It has a
maximum of one main amplifier per
router and one spare amplifier per
router (including the router built in
the controller). Each router of the
Plena Voice Alarm System has an
input for connecting a spare
amplifier channel. It also contains
switch-over relays to switch the
loudspeaker load from the original
amplifier output to the spare
amplifier output. A spare amplifier
channel assignment is configurable
to multiple routers (in single
channel mode).
After fault detection of an amplifier
all loudspeaker lines are switched
automatically to the spare amplifier
(if connected and configured)
within 10 s.
Each router of the Plena Voice
Alarm System has a spare amplifier
input. The installer is responsible
for proper installation and
configuration of the amplifiers to
match amplifier power and load.
Plena Voice Alarm System takes
care of input signal switching to
the spare amplifier channel. This
way the spare power amplifier(s)
will have the same functionality
and output power as the replaced
amplifier.
Appendices | en 183
Signature
2013.07 | V2.0 |