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12. Error elimination
12. Error elimination
Error description
Measures
1.
The device shows a
permanent overflow
• The input frequency is too high for the selected frequency range. Correct
range
according to this.
• Disturbing pulses lead to an increased input frequency, activate
fi.frq
at smaller
frequencies or shield the senor line.
• A mechanic switching contact chatters. Activate the frequency filter
fi.frq
with
10 or 20 kHz.
• The display was taught faulty under
type
=
Sens.f
. Error elimination see below.
2.
The device shows a
permanent underflow.
• An offset frequency
offsa
bigger than 0 Hz respectively a „Living zero“ was
selected, in which no frequency is aligned. Check the sensor lines or set the
Offsa
onto 0 Hz.
• The display underflow
dl.und
was selected too high. The according parameter
needs to be adapted.
• The device was taught faulty under
type
=
Sens.f
. Error elimination see below.
3.
The displayed values
switches sporadical.
• Disturbances lead to short-term display switches. For smaller frequences use
the frequency filter
Fi.frq
, select a higher measuring time or use the sliding
averaging.
• The sprockets that needs to be collected are not evenly spread on a shaft or
are not measured accurately. Use the sliding averaging „
Avg
“ if necessary with
the dynamic function
Step
. The displayed value
displ
needs to be set on
AVG
.
4.
The display remains on
zero.
• The sensor was not connected properly. Check the connection lines and if
necessary the sensor supply. Best directly on the screw terminals of the device!
• A PNP- respectively NPN-output does not reach the required threshold. Check
the voltage between terminal 2 and 3 with a multimeter. Depending on signal
form it generally shoud be between 4 V and 15 V. The thresholds can be
checked more savely with an oscilloscope. If necessary include an external pull-
up or pull-down.
• A Namur-sensor does not react. Check the distance between the sensor and
the sprocket / survey mark and if necessary measure the voltage between 1 & 3.
In open condition the input voltage needs to be smaller than 2.2 V and in active
condition bigger than 4.6 V.
• The selected range of the input frequency is too high. Reduce the frequency
range
range
to a smaller value.
• The activated frequency filter
Fi.frq
suppresses the relevant pulses. Increase
the filter frequency
fi.frq
or use the adaption of the key proportion
fi.rat
. If this
should not work, temporarily deactivate the frequency filter with
fi.frq
=
no
.
• The device was taught faulty under
type
=
Sens.f
. Change into
Type
/
Frequ
and
preset the assumed frequency range
range
and the according initial and final
values
end
,
offs
,
Enda
, and
offsa
. Check this way, if a frequency signal was
connected to the input.
5.
The device shows
HELP
in
the 7-segment display
• The device located an error in the configuration memory, excecute a reset to
the default values and set up the device according to your application.
6.
Program numbers for the
parameterisation of the
input are not available
• The programming interlock is activated.
• Enter correct code.
7.
The device shows
Err1
in
the 7-segment display
• Contact the manufacturer if errors of this kind occur.
8.
The device does not react
as expected.
• If you are not sure, if the device has been parameterised before, restore the
state of delivery as described in
chapter 6
.
