X20(c)SC2212
36
Data sheet V1.141 X20(c)SC2212 Translation of the original documentation
Group: SafeDigitalInputxx
Parameter
Description
Default value
Unit
This parameter can be used to specify the pulse source for the input channel.
Default
-
Possible "Pulse Source"
Channel
1
2
3
4
5
6
1
Default
-
-
-
-
-
2
Channel 1
Default
-
-
-
-
3
Channel 1
-
Default
-
-
-
4
Channel 1
-
Channel 3
Default
-
-
5
Channel 1
-
-
-
Default
-
6
Channel 1
-
-
-
Channel 5
Default
Pulse Source
Note:
If a value other than "Default" is set for "Pulse Source", then the "Pulse Mode" parameter must be set to "Internal"
on the respective channel of the selected "Pulse Source".
This parameter can be used to specify the pulse mode for the input channel.
Internal
-
Pulse Mode
Parameter value
Description
Internal
The channel works exclusively with the pulse output that is configured for
"Pulse Source".
No Pulse
The pulse check on the channel is disabled. Potential low phases of the signal
must be removed using the switch-off filter in order to prevent unintended cutoff.
Filter Off
Switch-off filter for the channel to remove potentially disruptive signal "low phas-
es".
•
Permissible values: 0 to 500,000 μs (corresponds to 0 to 0.5 s)
0
μs
Filter On
Switch-on filter for the channel that can be used to "debounce" the signals. This
function also makes it possible for the module to lengthen a switch-off signal
that would otherwise be too short.
•
Permissible values: 0 to 500,000 μs (corresponds to 0 to 0.5 s)
200000
μs
Discrepancy Time
Parameter only available for odd-numbered channels.
This parameter specifies the maximum time for "dual-channel evaluation", dur-
ing which the status of both physical individual channels can remain undefined
without triggering an error.
•
Permissible values: 0 to 10,000,000 µs (corresponds to 0 to 10 s)
50000
μs
Table 24: SafeDESIGNER parameters: SafeDigitalInputxx
Danger!
Configuring a switch-off filter lengthens the safety response time!
The configured filter value must be added to the total response time.
Danger!
Signals with a low phase shorter than the safety response time can potentially be lost. Such signals
should be lengthened accordingly using the "switch-on filter" function on the input module.
Danger!
Configuring a switch-off filter causes signals with a low phase shorter than the switch-off filter to be
filtered out. If this results in a problem concerning safety functionality, then the switch-off filter must
be set to 0. Lengthening the low phase with a switch-on filter is not possible in these cases.