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FS, safety foot switch
391
02/16 MN05013001Z EN
Example
Monitoring of a 2-channel foot switch with cross-circuit
monitoring of the external wiring. Activation coil FS01SA is
triggered by a key switch.
This condition is scanned with the OM (maximum speed
monitoring) function block. The wiring of the OM function
block is described in section “OM, Maximum speed moni-
toring” on page 434.
Moving the switch from position 0 to 1 triggers the enable.
The enable contact FS01QS of the function block closes and
the signal is assigned to the safety marker MS05 for further
processing.
The enable is removed if you continue to hold down the
switch in position 2 or take your foot off the switch to thus
return it to position 0. When returning to switch position 2
from switch position 0, there is no enable when passing
through position 1.
The guard can only be bridged for up to 3 minutes.
The electrical circuit is as follows:
h
The foot switch must only be active at reduced speed.
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