11.12 Status Alarms - Emerson Micro Motion 2400S Configuration And Use Manual

Troubleshooting

11.12 Status alarms

Status alarm codes are reported on the LCD panel (for transmitters that have a display), and status
alarms can be viewed with ProLink II or a DeviceNet tool (see Section 7.6). All possible status alarms
are listed in Table 11-2, along with the ProLink II message, possible causes, and suggested remedies.
You may find it useful to acknowledge all alarms before beginning the troubleshooting procedures.
This will remove inactive alarms from the list and allow you to focus on active alarms.
Table 11-2 Status alarms and remedies
Alarm ProLink II
code message
A001 (E)EPROM
Checksum Error
(CP)
A002 RAM Error (CP)
A003 Sensor Failure
A004 Temperature
Sensor Failure
A005 Input Overrange
A006 Not Configured
A008 Density Overrange
116
Cause
An uncorrectable
checksum mismatch has
been detected
ROM checksum error or a
RAM location cannot be
written to
Continuity failure of drive
circuit, LPO, or RPO, or
LPO-RPO mismatch when
driving
Combination of A016 and
A017
The measured flow has
exceeded the maximum
flow rate of the sensor
(ΔT > 200 μs)
Combination of A020 and
A021
The measured density has
3
exceeded 0–10 g/cm
Suggested remedy
• Cycle power to the flowmeter.
• The flowmeter might need service. Contact Micro Motion.
See Section 11.3.
• Cycle power to the flowmeter.
• The flowmeter might need service. Contact Micro Motion.
See Section 11.3.
• Check for slug flow. See Section 11.14.
• Check the test points. See Section 11.19.
• Check the sensor circuitry. See Section 11.20.
• Check sensor tubes for plugging.
• If the problem persists, contact Micro Motion. See
Section 11.3.
• Check the sensor RTD circuitry. See Section 11.20.
• Verify that process temperature is within range of sensor
and transmitter.
• If the problem persists, contact Micro Motion. See
Section 11.3.
• If other alarms are present (typically, A003, A006, A008,
A102, or A105), resolve those alarm conditions first. If the
A005 alarm persists, continue with the suggestions here.
• Verify process and check for slug flow. See Section 11.14.
• Check the test points. See Section 11.19.
• Check the sensor circuitry. See Section 11.20.
• Check the sensor tubes for erosion. See Section 11.15.
• If the problem persists, contact Micro Motion. See
Section 11.3.
• Check the characterization. Specifically, verify the FCF
and K1 values. See Section 6.2.
• If the problem persists, contact Micro Motion. See
Section 11.3.
• If other alarms are present (typically, A003, A006, A102, or
A105), resolve those alarm conditions first. If the A008
alarm persists, continue with the suggestions here.
• Verify process. Check for air in the flow tubes, tubes not
filled, foreign material in tubes, or coating in tubes (see
Section 11.15).
• Check for slug flow. See Section 11.14.
• Check the sensor circuitry. See Section 11.20.
• Verify calibration factors in transmitter configuration. See
Section 6.2.
• Check the test points. See Section 11.19.
• If the problem persists, contact Micro Motion. See
Section 11.3.
®
Micro Motion Model 2400S Transmitters for DeviceNet
™