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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
ENABLE function block verifies a manual key
device Input status. If the key is not turned
the output is 0 (FALSE). Otherwise the output
is 1 (TRUE).
ENABLE (enable key)
Enable reset: If selected this enables the
request to reset each time the command 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
⇒
WARNING: 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.
Output test: This is used to select which test output signals are to be sent to the component
contacts. 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 at start-up: If selected this enables the test at start-up of the external component. This
test is performed by opening and activating the enable key 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.
CERTUS Installation Manual
