93
2121331-04-04/19 (Translation of the original operating instructions)
Operating Instructions
Modular Safety Control System MSC
EN
9.2.2.3. Single-channel interlock (SINGLE INTERLOCK)
The input status of a movable guard or a safety door is checked by the SINGLE INTERLOCK function block. If the movable
guard or the safety door is opened, the OUTPUT output is "0" (FALSE), otherwise the OUTPUT output is "1" (TRUE).
Figure 87: Single-channel interlock
Parameter
Manual Reset: If selected, a reset can be requested on every activation of the movable guard or the safety door. Otherwise
the activation of the output will correspond 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.
Manual
Monitored
Figure 88: Single-channel interlock manual/monitored reset
Important!
If manual reset is selected, the next input after the inputs used by the function block must be used.
Example: If Input1 and Input2 are used for the function block, Input3 must be used for the reset input.
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).
StartUp Test: If selected, the test is undertaken on switching on the external components. This test is undertaken by opening
the movable guard or the safety door to carry out one complete function test and to activate the output. This test is only
requested on starting the machine (switching on the module).
Filter (ms): This parameter makes it possible to filter the signals that are received from the external contactors. The 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.
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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