48
2TLC172001M0211_A
Safety parameters
SIL according to EN 62061/IEC 61508
SIL 3
PL according to EN ISO 13849-1
PL e
Category according to EN ISO 13849-1 4
DC
avg
according to EN ISO 13849-1
High
CCF according to EN ISO 13849-1
Meets the requirements
HFT (Hardware fault tolerance)
1
SFF (Safe failure fraction)
>
99% for the single channel parts
>
90% for the double channel parts
Charge pump outputs*
PFD
AV
(for proof test interval = 20 years) 1.1 x 10
-4
PFH
D
according to EN 62061/IEC 61508 1.5 x 10
-9
MTTF
d
according to EN ISO 13849-1
High/1500 years
Relay outputs*
PFD
AV
(for proof test interval = 20 years)
1.5 x 10
-4
PFH
D
according to EN 62061/IEC 61508 2 x 10
-9
MTTF
d
according to EN ISO 13849-1
High/1100 years
Analogue inputs* (Pluto D20, D45)
2 sensors (see 4.3.2)
1 sensor (see 4.3.2)
SIL according to EN 62061/IEC 61508
Up to SIL 3
Up to SIL 2
PL according to EN ISO 13849-1
Up to PL e
Up to PL d
DC
avg
according to EN ISO 13849-1
Up to High
Up to Medium
PFD
AV
(for proof test interval = 20 years)
1.5 x 10
-4
1.5 x 10
-3
PFH
D
according to EN 62061/IEC 61508 1.6 x 10
-9
5.8 x 10
-9
MTTF
d
according to EN ISO 13849-1
High/1100 years
High/400 years
Counter inputs* (Pluto D45)
2 sensors (see 4.4.7)
1 sensor (see 4.4.7)
SIL according to EN 62061/IEC 61508
Up to SIL 3
Up to SIL 1
PL according to EN ISO 13849-1
Up to PL e
Up to PL c
DC
avg
according to EN ISO 13849-1
Up to High
Up to High
PFD
AV
(for proof test interval = 20 years)
1.5 x 10
-4
1.5 x 10
-4
PFH
D
according to EN 62061/IEC 61508 1.6 x 10
-9
1.6 x 10
-9
MTTF
d
according to EN ISO 13849-1
High/1100 years
High/1100 years
Note:
PFD
AV
= Average probability of dangerous failure on demand
PFH
D
= Probability of dangerous failure per hour
MTTF
d
=
Mean time to dangerous failure/channel
PL = Performance level (as defined in EN ISO 13849-1)
CCF = Common cause failure
*
Input to output (incl. AS-i and CAN bus)