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4.4.2.1. Use as optical warning system without test function
The safety function – generating a warning signal – is realised via a one-channel system (1oo1 according to
IEC/EN61508) without taking account of the diagnosis function, as also described in section 4.2.
Low and high requirement rates (low and high demand mode) are usable in the system without an automatic
test function.
T
ProofTest
PFD
mean
PFH
SFF
DC
MTTR
λ
flashing light
D
λ
flashing light
S
λ
diagnosis switch
DU
λ
diagnosis switch
S
β
λ
complete
DU
λ
complete
S
MTTF
d
HFT
Category (DIN EN ISO13849)
Architecture type
Suitability of the system for use in safety chains until
PL (DIN EN ISO13849)
*
Next to the proof test interval, the lifetime of the flashtube is to be observed as specified in the technical data. The number of executed
flashes is pivotal for the lifetime. This is to be taken into account in the respective use.
The monitoring of the function of the light is used in the proof test. The 'proof test' is described in section
4.10 of the operating instructions/safety manual.
4.4.2.2. Use as optical warning system with test function
This monitoring can only be used with systems in 'low demand mode'. The test function, as described in
section 4.7, is taken into account. This must be automated and must take place at least ten to one hundred
times more often than the expected requirement rate. The system with test function, including the diagnosis
and respective measures in the fault message, must be in accordance with the requirements of the function
safety according to IEC/EN61508.
In the following, a requirement rate less frequent than once a year is assumed (low demand).
Automatic
test interval
Proof test interval
PFD
mean
SFF
eq
DC
eq
Automatic
test interval
Proof test interval
PFD
mean
SFF
eq
DC
eq
085501930i_de-en-fr.docx
File name:
2,95 x10
monthly
(672h)
1*
24V DC
230V AC
-4
-4
2,51x10
1,86x10
8,45x10
94,6
95,3
91,4
91,4
monthly
(672h)
15*
24V DC
230V AC
6,59 x10
4
4,88x10
-4
4,93 x10
99
99,2
98,5
98,5
24V DC
1*
15*
-3
-2
4,37 x10
2,16 x10
24V DC
6,65 x10
>100
Typ A
SIL 1
weekly
(168h)
1*
24V DC
230V AC
24V DC
-5
-5
6,26x10
3,71x10
98,2
98,4
97
97,1
weekly
(168h)
15*
24V DC
230V AC
24V DC
4
3,65x10
-4
4,45 x10
99,3
99,4
98,9
98,9
23 / 44
230V AC
1*
15*
Year
-3
-2
3,24x10
(1/requirement)
230V AC
-7
-7
4,93 x10
37,6
45,3
0
0
1
1
661
488
281
277
43
50
82
85
10%
10%
665
493
401
407
>100
0
0
1
1
Typ A
SIL 1
C
c
daily
(24h)
1*
a
230V AC
-5
-5
2,74x10
(1/requirement)
99,2
99,3
%
98,7
98,7
%
daily
(24h)
15*
a
230V AC
4
3,3x10
-4
(1/requirement)
99,4
99,4
%
99
99
%
(1/h)
%
%
H
Fit
Fit
Fit
Fit
Fit
Fit
Years
Drwg-no.: 30084-004-5i
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