SICK ReLy OSSD1

10 Technical data
10.1 Data sheet
Safety-related parameters
T
he required safety-related characteristic value depends on the application.
Table 7: Safety-related parameters
Safety integrity level
(IE
C61508)
SIL3 SIL2 SIL1
SIL claim limit
(IEC62061)
SIL3 SIL2 SIL1
Cate‐
gory(ISO13849-1)
4 3 3
Performance level (ISO
13849-1)
1)
PLe PL d PL c
Hardware error toler‐
ance
1
Maximum test interval
of t
he safety function
1month 1year –
MTTF
D
(single chan‐
nel) (ISO13849-1)
2)
300years 100years 100years
PFH
D
(me
an probability of a dangerous failure per hour)
2)
For operating
hei
ghts≤4,000m
above sea level
1 × 10
-9
1 × 10
-8
1 × 10
-7
PFD
avg
(mean probability of a dangerous failure on demand)
For operating
hei
ghts≤4,000m
above sea level
5 × 10
-5
5 × 10
-4
5 × 10
-3
T
M
(mission time) 20years (ISO 13849-1)
Safe status when a
f
ault occurs
The safety relay has no internal fault detection and is unable to assume
a safe status in the event of a fault. Fault detection is performed by the
connected safety-related logic unit.
Stop category 0 (IEC60204-1)
1)
To achieve at least SIL2/PLd, an external diagnostic with DC ≥99% must be used (i.e., the external
de
vice monitoring must be connected).
2)
To achieve the safety-related characteristic values, the service life curve of the safety contacts must be
taken into consideration.
The maximum number of switching operations should be applied to the mission time T
M
.
Mean number of switching operations per year = switching operations based on the service life curve/T
M
As long as the mean number of allowed switching operations per year and the number of allowed
switching operations during the mission time T
M
has not been reached, the safety-related characteristic
values do not depend on the switching frequency if the service life curve is adhered to. B10
d
has already
been taken into consideration when calculating the safety-related characteristic values.
Service life curve, see figure 12, page 29
Mechanical data
T
able 8: Mechanical data
Weight 130g
Mounting Mounting rail (IEC60715)
10 TECHNICAL DATA
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O P E R A T I N G I N S T R U C T I O N S | ReLy OSSD1 8020860/1FH0/2022-10-27 | SICK
Subject to change without notice