Next generation SIL rated warning signals

Next generation SIL rated warning signals

E2S Warning Signals, the world’s leading independent manufacturer of life safety notification signals for industrial, marine and hazardous areas, are pleased to announce their next generation of SIL1 and SIL2 compliant warning devices.

The D1x, GNEx, STEx, AlertAlarm and AlertAlight ranges of alarm horn sounders, LED and Xenon Strobe beacons, plus combination sounders with beacons, are now available with SIL1 and SIL2 compliance as standard. This globally approved range of signals provide the ultimate in life safety notification in both hazardous area and safe area applications.

Expert third party PFD analysis (probability of failure on demand) of the extensive product reliability data available for these product ranges confirms SIL1 and SIL2 compliance. The assessment was carried out as per the guidance stipulated in IEC 61508 (2010) Random Hardware Failures and Systematic Failures – Route 2H. The system type is classified as B, as per clause 7.4.4.1.2. Because compliance is achieved in a 1001 architecture no duplication or redundancy of devices is required (as demanded by products that are only SIL2 compliant in a 1002 architecture).

The D1x, GNEx, STEx, AlertAlarm and AlertAlight ranges now provide engineers and specifiers with a comprehensive and reliable solution required for SIL rated safety systems, combined with the latest features, superior performance and established benefits of selecting E2S products.

In addition to the standard SIL1 and SIL2 compliance, where systems require warning signals with active diagnostics and SIL2 compliance via Route 1H in a 1001 configuration, the unique E2S SIL2 module may also be specified. The module is factory integrated with the signal electronics allowing the diagnostic circuitry to assess the audible or visual output of the sounder or beacon. Any detected power supply failure or failure to activate event is reported back to the controlling system via the separate diagnostic cable pair. Xenon beacon signals with the diagnostic module feature a diagnostic coverage of >98% and a Safe Failure Fraction of >99%. Alarm Horn sounders with the module have a diagnostics coverage of >98% and a SFF of >97%. The SIL2 diagnostic module product version is now available across the D1x, BEx, GNEx and STEx ranges of explosion proof audible and visual signals in marine grade aluminium, GRP or stainless steel enclosures.

For safety system initiation the E2S ranges of break glass manual call points and push buttons with, tool reset, momentary and dual action are also SIL1 and SIL2 compliant as standard.

Product installation manuals will be updated on the E2S website shortly with the SIL PFD data. Please contact your local representative or E2S salesperson for further information.