Bürkert 8619 multiCELL WM AC, Operating Instructions Manual

Page: 185 / 194

9.3.3 "Error" events related to a problem with the device (Red
LED A (left) and icons
X
and displayed)
When an error event related to a problem with the device is generated:
• The 4...20 mA output(s) generate a current of 22 mA
• The transistor outputs operate normally.
Message dis-
played in the
"Information"
menu Meaning Recommended action
"Mx:E:ORP sat."
"MxE:pH sat."
The pH and/or redox value is not being
correctly measured due to the saturation of
the input stage of the measuring board
→
Check the correct wiring of the earth
points
→
Check the equipotential surfaces of the
installation
"M0:E:Mx com." The link to the extension module is
interrupted
→
Switch the power supply off then on again
→
If the error persists, return the device to
Bürkert
"Mx:E:Memory FR" Factory data is lost.
The process continues but the accuracy of
the device is modified.
→
Switch the power supply off then on again
→ If the error persists, return the device to
Bürkert
"Mx:E:Memory IR"
"Mx:E:Memory UR" User data for the sensors is lost
→
Switch the power supply off then on again
→
Check the parameters of all the sensors
then save them again
→
If the error persists, return the device to
Bürkert
"Mx:E:Memory UW"
"Mx:E:Memory CR" The calibration parameters of the "Mx"
module are lost
→
Switch the power supply off then on again
→
If the error originates in the "M0" main
board, perform a new teach-in
→
If the error originates in an "Mx" module,
calibrate the sensor connected to this
module again
→
If the error persists, return the device to
Bürkert
"Mx:E:Memory CW"
"Mx:E:RTClock" The clock is faulty.
The process continues.
→
Return the device to Bürkert.
185
Repairandmaintenance
Type 8619
English