JUMO dTRANS T06 - Safety-Relevant Parameters; Failure Rates and SFF for 707071;X - 23;XXX (AC240 V); Failure Rates and SSF for 707071;X - 29;XXX (DC24 V)

6 Safety Manual
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6.5.2 Safety-relevant parameters
All following informations relate to the connection-Variant 3.
The following parameters were calculated using the formular in Chapter 6.5.5 for T
i
= 1, 3, and 5 years.
6.5.3 Failure rates and SFF for 707071/X – 23/XXX (AC240V)
6.5.4 Failure rates and SSF for 707071/X – 29/XXX (DC24V)
Variant 3
4to20mA (without
sensor technology
1oo1D architecture)
λ
S
[FIT]
λ
DD
[FIT]
λ
DU
[FIT]
SFF PFH (1/h)
PFD
avg
(Proof test A
PTC=75 %)
PFD
avg
(Proof test B
PTC=70.9 %)
PFD
avg
(Proof test C
PTC=45.4 %)
T
i
= 1 year 49.5 2049.8 151.1 93 % 1.51 × 10
-7
2.31 × 10
-3
2.55 × 10
-3
4.07 × 10
-3
T
i
= 3 years 3.30 × 10
-3
3.49 × 10
-3
4.67 × 10
-3
T
i
= 5 years 4.29 × 10
-3
4.43 × 10
-3
5.27 × 10
-3
k see examples in Chapter 6.5.5
Variant 3
4to20mA (without
sensor technology
1oo1D architecture)
λ
S
[FIT]
λ
DD
[FIT]
λ
DU
[FIT]
SFF PFH (1/h)
PFD
avg
(Proof test A
PTC=69.9 %)
PFD
avg
(Proof test B
PTC=67.7 %)
PFD
avg
(Proof test C
PTC=44.0 %)
T
i
=1 year 49.5 2088.8 158.1 93 % 1.58 × e
-7
2.73 × 10
-3
2.86 × 10
-3
4.34 × 10
-3
T
i
= 3 years 3.70 × 10
-3
3.80 × 10
-3
4.95 × 10
-3
T
i
= 5 years 4.67 × 10
-3
4.74 × 10
-3
5.56 × 10
-3