MODULAR SAFETY INTEGRATED CONTROLLER MOSAIC
8540780 • 10/07/2020 • Rev.38 127
S-MAT (safety mat)
The S-MAT function block verifies the status of
the inputs of a safety mat. If a person stands
on the mat the output is 0 (FALSE). Otherwise,
with the mat clear, the output is 1 (TRUE).
Parameters
Manual reset: If selected this enables the
request to reset each time the mobile
guard/safety gate is activated. Otherwise,
enabling of the output directly follows the
input conditions.
There are two types of reset: Manual and
Monitored. When Manual is selected the
system only verifies the signal's transition from
0 to 1. If Monitored is selected the double
transition from 0 to 1 and then back to 0 is verified.

If the Manual Reset is active, a consecutive Input have to be used. Example: Input 1
and Input 2 are used for the functional block, then Input 3 have to be used for the
Reset Input.

Two output test signals are mandatory. Each output OUT TEST can be connected to
only one input S-MAT (it is not allowed parallel connection of 2 inputs).

The function block S-MAT cannot be used with 2-wire components and termination
resistance.
Output test: This is used to select which test output signals are to be sent to the s-mat
contact. This additional control permits detection and management of any short-circuits
between the lines. To enable this control, the test output signals must be configured
(amongst those available). Test signals are mandatory.
Test at start-up: If selected this enables the test at start-up of the external component.
This test is performed by pressing and releasing the safety mat to run a complete function
test and enable the output. This test is only requested at machine start-up (when the unit
is switched on).
Filter (ms): This is used to filter the signals coming from the external contacts. The filter
can be configured to between 3 and 250 ms and eliminates any bouncing on the contacts.
The length of the filter affects the calculation of the unit's total response time.
Enable Error Out: If selected reports a fault detected by the function block.
Item description: This allows a description of the component's function to be entered. The
text is displayed in the top part of the symbol.
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