GB-32
D
GB
F
NL
I
E
Certification
Declaration of conformity
We, the manufacturer, hereby declare that the prod-
ucts BCU 460, BCU 465 and BCU 480 comply with
the requirements of the listed Directives and Standards.
Directives:
– 2014/30/EU
1)
– 2014/35/EU
Regulation:
– (EU) 2016/426 – GAR
Standards:
– EN 298:2012
– EN 1643:2014
– EN 60730-2-5
– EN 61508:2010, suitable for SIL 3
The production is subject to the surveillance proce-
dure pursuant to Regulation (EU) 2016/426 Annex III
paragraph 3.
Elster GmbH
Scan of the Declaration of conformity (D, GB) – see
www.docuthek.com
1)
There is no need for any additional EMC measure-
ment when installed.
SIL, PL
For systems up to SIL 3 pursuant to EN 61508.
Pursuant to EN ISO 13849-1, Table 4, the BCU can
be used up to PL e.
Safety-specific characteristic values
Diagnostic coverage DC 91.3%
Type of subsystem
Type B to EN 61508-
2:2010
Mode of operation
High demand mode
pursuant to
EN 61508-4:2010
Mean probability of dan-
gerous failure PFH
D
32.9 × 10
-9
1/h on
BCU 4xx..F1,
38.3 × 10
-9
1/h on
BCU 4xx..F3
Mean time to dangerous
failure MTTF
d
1/PFH
D
Safe failure fraction SFF 99.0%
Mean probability of dangerous failure PFH
D
(70°C)
of individual safety functions
Burner control with 2 gas valves
23.2 × 10
-9
1/h
Burner control with 3 gas valves
28.5 × 10
-9
1/h
Valve check
15.0 × 10
-9
1/h
Proof of closure
3.3 × 10
-9
1/h
Flame control
8.4 × 10
-9
1/h
Temperature monitoring
2.2 × 10
-9
1/h
Air pressure switch monitoring
3.3 × 10
-9
1/h
Gas pressure switch monitoring
3.3 × 10
-9
1/h
Purge with air pressure switch
4.3 × 10
-9
1/h
K-SafetyLink
1.0 × 10
-9
1/h
Safety interlocks (limits)
2.2 × 10
-9
1/h
Valve check with redundant pres-
sure switch
12.9 × 10
-9
1/h
Air pressure switch monitoring
with red. pressure switch
1.3 × 10
-9
1/h
Gas pressure switch monitoring
with red. pressure switch
1.3 × 10
-9
1/h
Purge with red. air pressure
switch
2.3 × 10
-9
1/h