Parameter Input Filter Time; Table 32: Input Pulse Durations Depending On The Input Filter Time - WAGO -I/O-SYSTEM 750 Series Manual

WAGO-I/O-SYSTEM 750
753-661/000-003 4FDI 24V PROFIsafe V2 iPar
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8.3.4.1

Parameter Input Filter Time

Configuring the input filter time changes the safe response time!
If you change the Input Filter Time parameter, then the safe response time is also
changed. See "Response Time" section.
The Input Filter Time parameter is used to set the filter time for all digital inputs
of the PROFIsafe I/O module. Setting the filter time to "0 ms" disables the input
filter.
Note that the minimum signal duration on a digital input depends on the filter time
set.
With the input filter, signal changes to a digital input are detected by the
PROFIsafe I/O module delayed by the duration of the filter time.
If the signal voltage on the digital input switches from "1" to "0" (signal change
1-0) for a safety requirement (e.g., emergency off requirement), for example,
signal voltage "0" must be present for this input pulse duration.
If the signal voltage is present shorter than the input pulse duration on the digital
input, the signal change is may not be detected by the PROFIsafe I/O module. The
following table indicates input pulse durations depending on the input filter time
set:

Table 32: Input Pulse Durations Depending on the Input Filter Time

Input filter time
[ms]
Input pulse duration
[ms]
Use shielded cables for input filter times under 3 ms!
If you have set input filter times less than 3 ms, you have to use shielded cables if
there is risk of interference (e.g., overvoltage) on the signal lines to prevent
possible passivation of the PROFIsafe I/O module.
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