99
2121331-04-04/19 (Translation of the original operating instructions)
Operating Instructions
Modular Safety Control System MSC
EN
9.2.2.7. Safety footswitch (FOOTSWITCH)
Using the FOOTSWITCH function block the input status of a safety footswitch is checked. If the footswitch is not pressed,
the OUTPUT output is "0" (FALSE), otherwise the OUTPUT output is "1" (TRUE).
Figure 96: Safety footswitch
Parameter
Input Type:
Ì Single NC – makes it possible to connect components with one normally closed contact.
Ì Single NO – makes it possible to connect footswitches with one normally open contact.
Ì Double NC – makes it possible to connect footswitches with two normally closed contacts.
Ì Double NC-NO – makes it possible to connect footswitches with one normally closed contact and one normally open
contact.
Important!
¨ Connect inactive input (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.
Manual Reset: If selected, a reset can be requested on every activation of the safety footswitch. Otherwise the activation
of the output will correspond directly to the input conditions.
There are two types of reset: "Manual" and "Monitored". On the selection of the manual reset, the system only checks the
signal transition from 0 to 1. With the monitored reset the double transition from 0 to 1 and then back to 0 is checked.
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