eloProg - Vers. 1.0
66
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
Enabled 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
.
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If the Enabled Reset is active, a consecutive Input has to be used. Example: Input 1 and
Input 2 are used for the functional block, then Input 3 has to be used for the Reset Input.
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Each output OUT TEST can be connected to only one input S-MAT (the
parallel connection
of 2 inputs is not allowed).
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The function block S-MAT can’t 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 mat contact. This
additional test makes it possible to detect and manage any short-circuits between the lines. Test
signals are mandatory and must be chosen between two possible configurations: Test Output
1/Test Output 2 or Test Output 3/Test Output 4.
Test at start-up
: If selected this enables the test at start-up of the external component. This test is
performed by opening the mobile guard or safety gate 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).
