Subject to reasonable modifications due to technical advances.
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17
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AS-Interface
Spezifications
4.2
Safety-relevant characteristic data
Characteristic data
Value
Standard
Safety category
4
EN 954-1
Safety category
4
EN 13849-1:2006/PLe Cat 4
Performance Level (PL)
e
Safety Integrated Level (SIL)
3
IEC 61508
Lifespan (TM) in years
20
EN 13849-1:2006/PLe Cat 4
Maximum switch-on time in months
12
IEC 61508
PFD
<
9,25 x 10
-6
IEC 61508, EN 62061
PFH
D
(probability of a dangerous failure per hour)
<
5,36 x 10
-9
IEC 61508, EN 62061
Max. system reaction time in
milliseconds
40
IEC 61508
Tab. 4-4.
Attention!
In addition to the system reaction time of max. 40 ms, the reaction times of the safe AS-
interface sensor slave, of the sensor being used for monitoring, of the safe AS-interface
actuator slave and of the actuator used for this purpose must still be added. Please note
that additional reaction times may likewise arise through the configuration of the safety
monitor.
Notice!
Refer to the technical data for the slaves as well as to that for the sensors and actuators
for the reaction times to be added.
Attention!
The system reaction times of the daisy-chained AS-interface components are added up.
