Sm 1226 F-Di 16 X 24 Vdc Channel - Siemens SIMATIC S7 Functional Safety Manual
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Fail-Safe signal module (SM) I/O configuration
5.3 Configuring SM 1226 F-DI 16 x 24 VDC DI and channel parameters
Table 5- 3
SM 1226 F-DI 16 x 24 VDC channel parameters
Channel parameters
Activated
Input filters
Channel failure
acknowledge
Sensor supply
Sensor evaluation
108
Description
Select the check box to activate the channel.
You must activate both required channels
before selecting 1oo2.
If channels are paired, you must change to
1oo1 and change individually.
Deselect the check box and the unused chan-
nel is deactivated.
If you deactivate a channel, you also deacti-
vate its diagnostic function.
Digital inputs are filtered to remove contact
bounce and short duration noise. This parame-
ter assigns the duration of the filter time.
Controls whether the channel is automatically
reintegrated after a fault clears, or requires an
acknowledgement (manual) in the user pro-
gram. Refer to "Reactions to faults" (Page 115)
for the reintegration procedure.
Assign whether 24 V power is supplied to sen-
sors from a sensor supply output of the module
(internal) or from an external power supply
(external).
Short-circuit tests are not performed for any
channel where external power is selected.
Assigns whether channel x input operates
individually or is paired with channel x+8 input.
1oo1 evaluation: One sensor is connected to
the module on a single channel.
1oo2 evaluation: Two input channels are occu-
pied by either:
Two 1-channel sensors
•
One 2-channel equivalent sensor
•
One 2-channel non-equivalent sensor
•
If 1oo2 is selected, you must assign the digital
input connection type and discrepancy proper-
ties.
Default
Options
Check box selected Check box:
Selected
•
Deselected
•
6.4 ms
0.8 ms
•
1.6 ms
•
3.2 ms
•
6.4 ms
•
12.8 ms
•
Manual
Automatic
•
Manual
•
External
Internal
•
External
•
1oo1 evaluation
1oo1 evaluation
•
1oo2 evaluation
•
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA
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