TOA Electronics Europe Gmb H presents Vena S

TOA Electronics Europe Gmb. H presents: Vena. S Main Requirements of EN 60849 Sound Systems for Emergency Purposes

V Venas Definitions VX 2000 A Few Definitions [3] u “Alarm a signal, or condition, warning of an emergency” e. g. : evacuation advice u “Warning important notice concerning any change of status which demands attention or activity “ e. g. hint that an emergency may happen u “Critical Signal Path all components and interconnections between every emergency broadcast initiation point and the input terminals on, or within, each loudspeaker enclosure. ” BMZ Alarm tone generator ~ ~ ampli fire Line Loud speaker 3 Background Design: Torsten Kranz

V Venas VX 2000 Requirements on the Apparatus’s Concerning the manufacturer 4 Background Design: Torsten Kranz

V Venas Operation Availability VX 2000 Continuous Availability [4. 1 b] The PA system shall be available all times Availability within 10 seconds after supplying power to the system [4. 1 c] primary or secondary power Maximum 3 Seconds from initiation until first emergency broadcast [4. 1 d] including reaction time of the detection system 5 Background Design: Torsten Kranz

V Venas Emergency Priorities VX 2000 [4. 3] Manual Alarming/Warning/Restoration > automatic Alarming (evacuation) > automatic Warning > no emergency: operational messages (e. g. for system check) 7 Background Design: Torsten Kranz

V Venas Manual Intervention VX 2000 If the voice alarm system is capable of operation in fully automatic mode, a manual intervention shall always be possible [4. 3. 2] u starting and stopping of prerecorded alarm messages [4. 3. 2 a] u selection of appropriate prerecorded alarm messages [4. 3. 2 b] when using specific emergency messages, indication of which message and their relation to zones must be displayed [5. 2. d] paging by using the emergency microphone (if any) [4. 3. 2 d] u selection of zones for prerecorded message or paging u [4. 3. 2 c] 8 Background Design: Torsten Kranz

V Venas Automatic Status Indication VX 2000 „A clear indication shall automatically be given at the designated control locations of: “ [5. 2] (the designated control location can be the fireman‘s microphone) “system availability“ [5. 2 a] u “power supply availability “ [5. 2 b] u “any fault condition“ [5. 2 c] u systems with several zones: current message broadcast into which zones: Alert, Evacuation, paging u 9 Background Design: Torsten Kranz

V Venas Failure Indication (1) VX 2000 Indication of Failures [5. 3] Failures must be indicated automatically at an designated place (e. g. main system) u The failure shall be indicated within 100 seconds after occurrence. u The failure shall be indicated acoustically and visually. u A receipt button and a Reset button must be available. u 10 Background Design: Torsten Kranz

V Venas Failure Indication (2) VX 2000 Indication [5. 3] u Visual and acoustic indication tone of 0. 5 seconds duration, min. once within 5 seconds permanent or flashing visual indicator u Manual reception by personal tone disappears visual indicator remains / changes to permanent on u Reset of failure indication after failure recovery visual indicator extinguishes automatically or visual indicator extinguishes after manual Reset visual indicator shall extinguish after failure recovery ! u Acoustic tone must start again when other failure detected 11 Background Design: Torsten Kranz

V Venas Surveillance (1) VX 2000 An automatic Surveillance must indicate each detected failure The surveillance system tests Components of the “critical signal path “ (sources, amplifiers, cables etc. ) u the power supply u primary supply [5. 3 a] secondary supply [5. 3 b] battery charger [5. 3 c] u failure of protection circuits which may prevent the an emergency broadcast e. g. fuse, circuit breaker, isolator [5. 3 d] u control circuits (processor etc. ) 12 Background Design: Torsten Kranz

V Venas Surveillance (2) VX 2000 Failure of elements of the critical signal path u failure of microphone [5. 3 e] (voice coil, pre amplifier, wiring) failure of the critical signal path through amplifiers [5. 3 f] u missing of amplifiers or critical modules [5. 3 g] u failure of standby amplifier[5. 3 h] u failure of tone generator or message memory [5. 3 i] u failure of speaker circuits[5. 3 j] u (short circuit, break) failure of connection between decentralised systems [5. 3 o] u failure of connection between PA system and emergency detection system u usually this surveillance is done by the emergency detection system [5. 5] 13 Background Design: Torsten Kranz

V Venas Monitoring of the Microphone VX 2000 Methods of Microphone Monitoring electrical monitoring : u Disadvantage: conversion from sound to voltage can not be monitored, e. g. when the diaphragm is damaged Acoustic monitoring a speaker send an acoustic signal to the capsule u the acoustic and electric function of the capsule is monitored very safe method ! u 14 Background Design: Torsten Kranz

V Venas Monitoring Speaker Circuits (1) VX 2000 1. Impedance Monitoring (used often) audio pilot tone (low frequency) + impe dance measuring connection of different 100 volts speakers possible star wiring possible expansion of old systems possible 15 Background Design: Torsten Kranz

V Venas Monitoring Speaker Circuits (2) VX 2000 2. Loop Back audio test signal (high frequency) + pilot tone detector connection of different 100 volts speakers possible line must be installed from speaker to speaker line back necessary 16 Background Design: Torsten Kranz

V Venas Monitoring Speaker Circuits (4) VX 2000 3. End-of-Line Check audio pilot tone (high frequency) end of line unit EOL + pilot tone detector, EOL receiver connection of different 100 volts speakers possible only single line back necessary (third wire of shield can be used if available) line must be installed from speaker to speaker 17 Background Design: Torsten Kranz

V Venas Evacuation Message Memory VX 2000 Safety Against External Influence Prerecorded messages and eventually attention drawing signals must be stored in a non volatile memory (solid state memory, no mechanical devices) [4. 2 i] u availability must be monitored continuously u external sources shall not be able to corrupt or derange the store or its contents u 18 Background Design: Torsten Kranz

V Venas VX 2000 Requirements On The Installation concerning the installer 19 Background Design: Torsten Kranz

V Venas VX 2000 Interface With Emergency Detection System [5. 5] Continuous Monitoring u The communication link between the emergency detection system and the sound system is normally monitored by the emergency detection system Notifications to the Emergency Detection System u The sound system must transfer minimum one fault information (any failure)to the emergency detection system 20 Background Design: Torsten Kranz

V Venas Retaining Functions VX 2000 Redundant Facilities Retaining the Power [4. 1 m] u an emergency power supply must be installed always Retaining the Broadcast [4. 1 g] u „Failure of a single amplifier or loudspeaker circuit shall not result in total loss of coverage in the loudspeaker area served. ” architecture of the speaker circuit configuration power amplifiers u Exception: regional directives for small buildings 21 Background Design: Torsten Kranz

V Venas Emergency Power Supply VX 2000 Battery’s Capacity [5. 6] u Loss of AC mains at evacuation: double evacuation time minimum 30 minutes for emergency mode u Loss of AC mains without evacuation : minimum 24 hours (normal operation) When a building is not used for a longer period (e. g. weekend), then the system must be capable to operate the emergency mode for minimum 30 minutes after re occupation of the building (e. g. 72 hours standby plus 30 minutes emergency mode) 22 Background Design: Torsten Kranz

V Venas Retaining of Broadcast (1) VX 2000 Electrical Solution: A/B-Wiring Two Line System u In case of failure of one line, the other line still serves the remaining speakers A B A/B wiring with 2 amplifiers A/B wiring with standby amplifier standby switch line cut switch standby amplifier 23 Background Design: Torsten Kranz

V Venas Retaining of Broadcast (2) VX 2000 Acoustic Solution: Connection of speakers by turns on the lines A and B in each direction u In case of a line’s failure, the speaker area keeps served adequate (small gaps of coverage only) u Example: wide area A B A Example: corridor B 24 Background Design: Torsten Kranz

V Venas Sound Pressure Level VX 2000 Attention-Drawing Signals [Annex C] minimum: 65 d. BA, in rest areas: 75 d. BA u 6 20 d. BA above background noise u maximum: 120 d. BA u the sound pressure levels of all relevant areas must be confirmed and being documented [7. 2 a] u sound pressure level 120 d. BA z. B. 100 d. BA z. B. 90 d. BA 75 d. BA 65 d. BA maximum level of att. drawing 6 20 d. BA background noise minimum rest areas minimum 26 Background Design: Torsten Kranz

V Venas Intelligibility VX 2000 Intelligibility of Messages The Intelligibility of messages must be equal or higher than 0. 7 CIS (common intelligibility scale; STI: 0, 5) [5. 1] u This value must be obtained in each area [5. 1] u In a difficult acoustic environment, it is preferable to carry out an acoustical simulation u Measuring and Documentation of Intelligibility Confirmation of intelligibility must be documented [7. 2 a] u Application of acknowledged with restrictions [Annex A] u Correlation curves to CIS in [Annex B] u A specialised company may measure the 27 intelligibility u Background Design: Torsten Kranz

V Venas Alarm Signals VX 2000 Attention-Drawing Signal minimum one suitable attention drawing signal before message (refer to EN 457) [4. 1 e] u Distinguishable attention drawing signals at different emergency cases [4. 1 h] u Attention-Drawing Signals and Messages [4. 1 h] attention drawing signal before message, 4 10 seconds u duration of attention drawing signal and messages until change or end of evacuation u max. 30 seconds between different messages u pauses > 10 seconds: attention drawing signal u 28 Background Design: Torsten Kranz

V Venas Documentation (1) VX 2000 Operation Manual [7. 1] must be quickly available (preferable at each operation place) Contents: practical operation of the system u action to be taken in case of system failure u Performance graphically if possible u in preferred language u bound document (copy) u 30 Background Design: Torsten Kranz

V Venas Documentation (2) VX 2000 System Documentation [7. 2 a] To be kept by User or Maintenance Company Contents: locations of each part of the devices u measuring results of the system u Impedance of each speaker circuit set values (when adjustable, e. g. volume) sound pressure level(s) intelligibility 31 Background Design: Torsten Kranz

V Venas Documentation (3) VX 2000 Maintenance Instructions [7. 3. 2] To be kept by User or Maintenance Company Contents: Maintenance procedures (order of works) u Maintenance intervals u Parts for maintenance, spare parts, special tools u Suppliers u eventually test certificates u 32 Background Design: Torsten Kranz

V Venas VX 2000 Requirements on the Operation concerns the user 33 Background Design: Torsten Kranz

V Venas Documentation (4) VX 2000 Log Book [7. 2 b] u Responsible person must take care on it Contents: details of all emergency cases u details of tests and routine checks u details of occurred failures and the repair u 34 Background Design: Torsten Kranz

V Venas Security of Operation VX 2000 Maintenance [7. 3. 1] should be done twice a year (maintenance and test) u to be carried out by competent person u Responsible person [4. 2] nominated by owner u is responsible for maintenance u must be trained u manages the log book u 35 Background Design: Torsten Kranz