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Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 07/18
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).
S-MAT (safety selector)
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.
Parameters
⇒
If the Manual Reset is active, a consecutive Input have to be used. Example : Input
1 and Input 2 are used for the fuctional block, then Input 3 have to be used for the
Reset
Input.
⇒
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 can not 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).
CERTUS Installation Manual
