Safety engineering
Device modules
Further inputs
35
EDS94AYAF EN 1.0
1.2.6.2
Example circuits
GO
24O
GO
O1B
O1A
SSP94SM360
24O, GO
24−V voltage supply for the safe output
O1A, O1B, GO
Safe output SD−Out1, channel A and B with reference potential
24−V voltage supply − safe output (SELV/PELV) acc. to IEC 61131−2
Input of a higher−level unit (e.g. safety PLC)
1.2.7
Further inputs
AIS input
The restart (when setting "acknowledged restart", (
41)), after a stop function has been
executed, requires an acknowledgement at AIS input:
ƒ
Positive signal pulse of 0.3 ... 10 s (terminal X82.3 or X82.4).
– Evaluation of the negative edge.
Other equivalent option:
ƒ
"PS_AIS" signal via a safety bus
(if communication via safety bus is preferred)
– Evaluation of the positive edge.
AIE input
Errors require an acknowledgement at AIE input:
ƒ
Positive signal pulse of 0.3 ... 10 s (terminal X82.2).
– Evaluation of the negative edge.
Other equivalent option:
ƒ
"PS_AIE" signal via a safety bus bit
(if communication via safety bus is preferred)
– Evaluation of the positive edge.