Safety engineering
Device modules
Connection of safety sensors
1
1.2
1.2.4
1.2-9
EDS94AYAD EN 2.2
Specification
Sensor type
passive active
Discrepancy time 30 s
Input delay 4ms 0ms
Input filter time for test pulses 15 ms
Repetition rate of the test
pulses
is determined by the c lock
outputs CLA and CLB
>50ms
Error response EC_S1
Confirmation via PROFIsafe or AIE input
Tab. 1.2-2 Specification of sensor connections
Explanations
Discrepancy time
ƒ Maximum time in which both channels of a safe input may have
non-equivalent states without the safety engineering noticing an error.
Input delay
ƒ Time between the recognition of the signal c hange and the effective
evaluation of an input signal. As a result, multiple and short signal
changes due to contact bounce of the components are not taken into
account.
Input filter time
ƒ Time in which the interference pulses and test pulses are not detected
by e.g. active sensors that are switched on.
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