Endress+Hauser Deltabar FMD72, Operating Instructions Manual

Page: 64 / 108

Diagnostics and troubleshooting Deltabar FMD72
64
"M" messages
Diagnostics event Cause Corrective measure
Code Description
M002 Sens. unknown Sensor module does not suit the device (electronic sensor
module nameplate). Device continues measuring. Contact Hauser
Service
M283 Memory content • Cause as indicated for F283.
• Correct measurement can continue as long as you do
not need the peakhold indicator function.
• Perform a reset
• Replace electronics
M431 Adjustment The calibration carried out would cause the nominal
sensor module range to be exceeded or undershot. • Check the measuring
range
• Check position
adjustment
• Check the setting
M434 Scaling • Values for calibration (e.g. lower range value and upper
range value) are too close together.
• Lower range value and/or upper range value
undershoot or overshoot the sensor module range
limits.
• The sensor module was replaced and the customer-
specific configuration does not suit the sensor.
• Unsuitable download carried out.
• Check the measuring
range
• Check the setting
• Contact Endress
+Hauser Service
M438 Dataset • The supply voltage is disconnected when writing.
• An error occurred when writing. • Check the setting
• Restart device
• Replace electronics
"C" messages
Diagnostics event Cause Corrective measure
Code Description
C412 Write Backup Downloading. Wait for download to
complete.
C482 Simul. output Simulation of the current output is switched on, i.e. the
device is not measuring at present. End the simulation
C484 Error simul. Fault state simulation is switched on, i.e. the device is not
measuring at present. End the simulation
C824 Process pressure • Electromagnetic effects outside the permitted range.
• Overpressure or low pressure present.
• This message appears for a short time only. • Check the pressure
value
• Restart device
• Perform a reset
"S" messages
Diagnostics event Cause Corrective measure
Code Description
S140 Working range P LP/HP • Overpressure and low pressure present.
• Electromagnetic effects outside the permitted range.
• Sensor module defective.
• Check the process
pressure
• Check the pressure
value
S822 Process temp. LP/HP • The temperature measured in the sensor module is
greater than the upper nominal temperature of the
sensor module.
• The temperature measured in the sensor module is
smaller than the lower nominal temperature of the
sensor module.
• Check temperature
• Check the setting
S841 Sensor range • Overpressure or low pressure present.
• Sensor module defective. • Check the pressure
value
• Contact Endress
+Hauser Service