Nivobob
®
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NB 3000
gi130109
37
Continuous level measuring system
NB 3000
Technical information / Instruction manual
page G
Diagnostics: Maintenance
Result is an indication for the user with still valid measurement.
Red LED is blinking. Relay 4 indicates Maintenance (programmable).
The signal enables a preventive maintenance. Evaluating the signal can help to avoid losing the sensor weight inside the silo.
If Maintenance was indicated, the measurement process can be continued.
Maintenance
code
Description
Performance of the device
Solution
M10
Deflection pulley moves
not smooth / regular
Message is shown, measurement can be continued.
If the following 5 measurement cycles after indication are o.k.,
the message will automatically disappear.
Check for proper movement
of the pulley.
Check for possible slipping of
the rope/tape on the pulley.
M11
Sensor weight blocked
in "upper stop position"
or block distance of
sensor weight to short
The unit tries to start 5 times. If the sensor weight is not
released during this time, the message is shown. If after a new
measurement start the sensor weight is released, the message
will automatically disappear.
Release sensor weight.
Ensure, that the min. moving
distance (block distance) is
> 200mm (7.87“)
M12
SD card not working
properly
In the diagnose menu the setting "SD card Enable" is done but
SD card is not present or not working properly
Set the menu to "SD card
Disable" or change SD card
M16
Service interval:
rope / tape
The amount of measurement cycles has reached 70% of the
rope/tape lifetime.
To further guarantee faultless performance, it is strongly
recommended to change the rope/tape.
After resetting the message, the internal counter for the rope/
tape cycles is reset to zero.
If the message is not reset, the unit will continue measuring,
until 90% of the rope/tape lifetime is reached. Then Failure F16
will come up.
Change rope /tape.
M17
Service interval:
motor
The actual run time has reached 70% of the motor lifetime.
To further guarantee faultless performance, it is strongly
recommended to change the motor.
After resetting the message, the internal counter for the motor
run time is reset to zero.
If the message is not reset, the unit will continue measuring,
until 90% of the motor lifetime is reached. Then Failure F17 will
come up.
Change motor
Deflection-
pulley
Upper
stop
position
Sensor
weight
By pushing the START button the actual stated messages shown on the
display can be reset.
If more than one message is present, the one with a lower code is shown on
the display. After reset with the START button, the next one will be stated.
Possibilities to see a maintenance history: see page G29.
Rope/tape
roller
Before removing the rope/tape roller,
remount the unit from the silo to avoid,
that the sensor weight can fall into the
silo.
CAUTION
