Operating Instructions
Modular Safety Control System MSC
94
(Translation of the original operating instructions) 2121331-04-04/19
9.2.2.4. Guard locking monitoring (LOCK FEEDBACK)
Using the LOCK FEEDBACK function block the state of the guard locking monitoring inputs for a movable guard or a safety
door is checked. If the inputs signal that the guard locking is locked, the OUTPUT output is "0" (FALSE), otherwise the OUT-
PUT output is "1" (TRUE).
Figure 89: Guard locking monitoring
Parameter
Input Type:
Ì
Single NC – makes it possible to connect components with one normally closed contact.
Ì
Double NC – makes it possible to connect components with two normally closed contacts.
Ì
Double NC-NO – makes it possible to connect components with one normally closed contact and one normally open
contact.
Important!
¨
Connect inactive input (guard locking unlocked, OUTPUT output is "0" (FALSE)) as follows:
Ì
NO contact to terminal that has been assigned to the input IN1.
Ì
NC contact to terminal that has been assigned to the input IN2.
Output Test: Using this option you can select which test output signals are to be sent to the component contacts. Short
circuits between the wires can be detected and rectified by means of this additional check. For this purpose it is necessary
to configure the test output signals (from the test output signals available).
Filter (ms): This parameter makes it possible to filter the signals that are received from the external contacts. This filter can
be set to between 3 and 250 ms and removes any contact bounce. The time set for the filter affects the calculation of the
total response time of the module.
With Simultaneity: If selected, the simultaneous switching of the signals received from the external contacts is checked.
Simultaneity (ms): This control is only available if the previous parameter has been selected. Using this value you can define
the maximum time (in ms) between the switching of the two different signals received from the external contacts.
Enable Error Out: If selected, an error detected by the function block is signaled.
Item Description: Here you can enter a functional description for the component. This text is displayed in the upper part of
the symbol.
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