Safety Manual; Standard Foundation; Features; Qualification - Pfannenberg DS5-SIL Instructions De Service

Programming
The programming of stages 2, 3 and 4 can be described as follows:
- De-energise sounders
- Change to programming mode by selector switch position 7 to ON
- Selection of the selected (basic) tone by appropriate selector switch settings 1 - 5.
(see sound selection table, basic tone stage)
- Brief application of service voltage and control voltage to the appropriate input terminals for stages 2, 3 or 4
(see also connection examples,4.13 )
The basic tone set is taken over by the stage activated.
WARNING: When the service voltage is switched on do not touch any live parts of the sounder.
- Repeat for all stages (2 - 4) which are to be activated.
- De-energise sounders
- Switch off programming mode by means of selector switch setting 7 to OFF.
The tone for stage 1 is set, after the programming mode has been left, with the help of selector switches 1 to 5.
Selection of the individual tone combination, by setting the selector switch 6 to ON (see Tone Selection Table,
Tone Selection 32)

4. Safety Manual

4.1. Standard foundation


IEC61508

IEC61511

EN ISO 13849-1 (following)
With the identification of the device with the CE sign, Pfannenberg GmbH confirms the fulfilment of the legal
requirements of the applicable EC guidelines.
The DS ..-SIL sounder fulfils the requirements of the functional safety according to IEC 61508, IEC 61511 and
EN ISO13849-1

4.2. Features

The sounder described alone does not perform any protective function (partial system), but is concepted for
installation as an output device with diagnosis (output) in the loop of a protective function (SIF). The system
(see Fig. 1 and Fig. 2) only ever shows a partial system of a technical safety system (SIS). It should be ob-
served through the system integrator that the entire 'loop', according to the use, has to meet the required safety
integration level (SIL). The system integrator must establish all measures in order to reach or maintain the safe
condition in the SIS in the case of a fault.
The diagnosis system of the device diagnoses the acoustic warning signals of the failed release and function
upon request and reports this via an alarm relay to a superior control system.
This does not constitute an online diagnosis within the meaning of IEC61508 and, without further measures, has
no influence on the intermediary values PFH, PFD, SFF and HFT. The diagnosis can only be used for the fol-
lowing uses/architectures:

Systems with small requirement rate of the safety function (low demand) which are regularly subject to
a test release. If the regular test is automated, then it can be evaluated so that the diagnosis coverage
flows into the calculation of the reliability data.

Systems in which the safety function can be tested before the existence of the dangerous condition,
such as starting alarms of machines, for example.

4.3. Qualification

Handling according to this operating manual and safety manual can only be carried out by trained electrical
technical personnel authorised by the plant operator.
The integration of this sounder in an application is to be carried out according to the rules of the functional safe-
ty.
Datei/ file name:085501958e.docx
Functional safety of electrical/ electronic/ programmable electronic
safety-related systems
Functional safety – safety instrumented systems for the
process industry sector
Safety-related parts of control systems
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