Brief Description Of The System - Pfannenberg DS5-SIL Instructions De Service

1. Brief description of the system

The sounders of the DS..-SIL series are audible warnings for the signalling of dangerous situations in safety
relevant applications, e.g. as an intrinsic part of an E/E/PE system (according to EN61508).
Operational voltage
(for signal devices
(monitoring switching supply)
Fig. 1 Overview
The sounders are for constructed for the robust requirements in industrial circumstances and can reach a sound
level of up to 110dB(A). The sounders suited to indoor and outdoor use create a warning signal in 30 different
tones which can be selected with the help of an internal DIP switch. There is also the possibility of (optionally)
switching to three other tones with external control. Next to these factory settings, the combination of tones can
be freely arranged by on-site programming. The function of the sounder is internally monitored electrically and
acoustically by a diagnosis channel. If an acoustic warning signal is made, then an MOS relay is conductive.
This information can be interpreted with a superior control.
Sounder operational voltage
Optional external tone selection
Operational voltage monitoring
Fig. 2 Illustration of the functionality of the switching parts of the sounder with monitoring
Datei/ file name:085501958e.docx
Operational voltage
Sounder channel
Monitoring channel
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Acoustic
signal
Monitoring
analysis
Sounder channel
Monitoring channel
Alarm output
Alarm output
MOS relay
Zeichnungsnr./ Drwg-no.: 30007-008-13e