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European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: +44 (0)208 743 8880
Document No. D226-00-125-IS_Issue_4 20/04/2023 Sheet 4 of 5
To move the duty labels, use a spanner or equivalent tool to
carefully remove the hex nuts and spring washers from the
positions shown on the rear of the plate. Care should be
taken not to drop them, especially if working from height.
Fig. 7: Plate underside
duty label fixings
For horizontal mounting, the hex spacers are optional.
If using the hex spacers:
Position the duty label assembly in the desire position (fig. 6).
Place spring washers over the spacer threads on the
underside of the plate and tighten M4 hex nuts fully.
If not using hex spacers:
Carefully remove the duty labels from spacers using a posi-
drive screwdriver to loosen the M4 screws. Place duty label
flush to plate with screws inserted into holes (fig. 6). Place
spring washers over the spacer threads on the underside of
the plate and tighten M4 hex nuts fully.
Beacons can be configured with a traffic light cowl to
enhance visibility. Figure 8 shows the optional Traffic Light
Cowl pre-assembled to the Beacon by E2S.
Fig. 8: Traffic Light Cowl
To disassemble the cowl, loosen the M6 Nut using a spanner
or wrench and carefully remove from the beacon lid casting.
To re-assemble, manoeuvre the cowl back into position and
tighten the M6 Screw and Nut until the cowl is fixed securely.
15) Maintenance, Overhaul and Repair
Please see individual product instruction manual. See Table
1 for Instruction Manual Document Number.
16) SIL Approvals
16.1 Standard Configurations
Beacons and Sounders have been assessed for Reliability
and Functional safety under IEC/EN61508 and are
considered suitable for use in low demand safety functions:
1. Random Hardware Failures and Architectural constraints
(route 2H).
2. As an unvoted item (i.e. hardware fault tolerance of 0) at
SIL 2.
Please see individual product instruction manual in Table 1
for information on reliability data.
16.2 SIL Module Configuration
For plated stacks with Product Version S, the units are
configured with SIL 2 relay modules and have been assessed
under route 1H. For further information on reliability data and
operation, please see the individual SIL documents
referenced in table 2.
Table 2: SIL Product Instruction Manual Reference
17) Telephone/ Relay Module Configuration
For plated stacks with Product Version T, the beacon and
sounder can be powered simultaneously using the relay
board. This can be configured to be either relay operated
(DC) or initiated by a telephone signal.
See Document D226-00-725-IS for full details.
Component
Part Code
Component Description SIL Document
Number
D191-00-621-IS