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FS, safety foot switch
393
02/16 MN05013001Z EN
The test signals for cross-circuit monitoring are assigned to
the corresponding device inputs in the TEST SIGNALSmenu.
The signal diagram of the function block for this application
shows the dependence of the enable contact FS01QS on the
status of coils FS01SA, FS01I1 and FS01I2 as well as the
timeout of the enable time:
Figure 198:
“Foot switch” example: signal diagram
Foot switch positions:
a
The key switch is in the position for setting operation and the
motor speed is slow. The foot switch can therefore be activated.
b
Actuation of the foot switch (switch position 1). The enable
time is less than the time set at ED.
c
Release of the foot switch, the enable at FS01QS is removed.
d
Actuation of the foot switch (switch position 1). The enable
time is greater than the time set at ED. The enable at FS01QS is
removed after the enable time has elapsed. The function block
outputs an error signal via FS01ER.
e
Acknowledgement of the error signal by releasing the foot
switch.
f
The foot switch is operated past the pressure point and engages
(positively opening contact is activated).
g
After unlocking the foot switch with an additional pushbutton,
the switch assumes its basic position again.
IS01 <- -
Æ
...
IS08 <- T1
...
æ
IS11 <- T4
IS12 <- T3
IS14 <- -
FS01I1
FS01I2
FS01QS
FS01ER
FS01SA
t < ED
t > ED
a
b
c
e
d
g
f
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