Bosch Plena Power Amplifier, Руководство по эксплуатации, Страница: 177 / 192

Clause / Requirement Compliance Signature
NOTE - Further access levels are
permitted provided that they are distinct
from the access levels described in this
standard.
13.7 Indications by means of light-
emitting indicators Plena Voice Alarm System is
compliant.
13.7.1 Mandatory indications from light
emitting indicators shall be visible in an
ambient light intensity up to 500 lux, at
any angle up to 22.5° from a line through
the indicator perpendicular to its
mounting surface
–
at 3 m distance for the general
indications of functional condition,
– at 3 m distance for the indication of
the supply of power, and
– at 0.8 m distance for other
indications.
All of the light emitting indicators
of the Plena Voice Alarm System
fulfill this requirement. When
external light emitting indicators
are installed, such as LEDs
connected to fault contacts, or
light emitting indicators connected
to output contacts, the installer is
responsible for using indicators
that fulfill this requirement.
13.7.2 If flashing indications are used,
both the on period and the off period
shall be greater than or equal to 0.25 s,
and the frequencies of flash shall not be
less than
–
1 Hz for voice alarm indications, and
– 0.2 Hz for fault indications.
The fault indication does not flash;
it is steady on.
The voice alarm indication on the
equipment flashes with a
frequency of 1 Hz (on and off
period of 0.5 s).
13.7.3 If the same light emitting
indicators are used for the indication of
specific faults and disablements, fault
indications shall be flashing and
disablement indications shall be steady. Disablement indication is not
available in the Plena Voice Alarm
System since Plena Voice Alarm
System does not support the
optional disablement condition.
13.8 Indications on alphanumeric
displays Plena Voice Alarm System does not
have an alphanumeric display.
13.8.1 If an alphanumeric display consists
of elements or segments, the failure of
one of these shall not affect the
interpretation of the displayed
information.
13.8.2 If an alphanumeric display is used
to display mandatory indications, it shall
be clear and unambiguous.
Plena Appendices | en 177
Bosch Security Systems B.V. Installation and Operation manual 2013.07 | V2.0 |