Operation
Operating Manual PIT m4SEU
1004648-EN-02
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8.3
Monitoring of operating time
A change of operating modes is only detected if the relevant pushbutton has been operated
for a defined time period.
Pushbutton's operating time
Input
Operating mode
Output
Operating time
I1
OM1
MSO1
> 50 ms and
< 5 s
I2
OM2
MSO2
I3
OM3
MSO3
I4
OM4
MSO4
I1
OM5 (Service)
MSO5
> 5 s and
< 10 s
8.4
Switchover time
Once a pushbutton has been released, the assigned output on the operating mode inter-
face switches to a "1" signal after the reaction time t2 has elapsed (see
details [
). A defined switchover time t1 guarantees that only one operating mode at
a time has a "1" signal at the assigned output.
MSO1
MSO2
MSO3
MSO4
MSO5
t1
t1
Fig.: Time behaviour when switching operating mode
8.5
Device status display
Two LEDs are available on the top of the device to display the device status.
LED
Colour
State
Meaning
Power/Fault
Green
Voltage supply connected, the device is in a RUN state
Red
The device is in a STOP state
Access
Yellow
Valid permission has been transferred from the PITreader