Pilz PSS u2 EF 8DO 0.5A Operating Manual page 12

Function description
Fig.: On test for single-pole outputs
Legend
Fig.: Off test for single-pole outputs
Legend
Switch-off delay
FS outputs can be switched off with a delay. Even if the process image of outputs switches
from "1" to "0", a "1" signal may remain at the output for the duration of the delay. If there is
another "1" signal during the switch-off delay, the switch-off delay time is reset again and
restarts at the next "0" signal.
In the event of external errors, e.g. if the connection to the controller is lost, the output is
switched off after the set switch-off delay.
However, in the event of internal module errors, the switch-off delay cannot be guaranteed.
Default value: 0 ms (immediate shutdown).
Operating Manual PSS u2 EF 8DO 0.5A
1003621-EN-03
t Configurable max. test duration (default value: 3 ms)
1
t Configurable repetition time of on test in error-free operation
2
(default value: test is run in each test cycle)
The test cycle time is not configurable and is determined by the head
module. The configuration enables a longer repetition time to be set
between the on tests.
t Configurable repetition time of on test in the event of an error (default
3
value: 30 s)
t Configurable max. test duration (default value: 3 ms)
1
t Repetition of off test in each test cycle
2
t 3
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