Emerson Process Management 2400S 11.12Status alarms, 2 Status alarms and remedies, Alarm, ProLink

Troubleshooting

11.12Status 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 11-2Status alarms and remedies

Alarm	ProLink II
code	message	Cause	Suggested remedy
A001	(E)EPROM	An uncorrectable	• Cycle power to the flowmeter.
	Checksum Error	checksum mismatch has	• The flowmeter might need service. Contact Micro Motion.
	(CP)	been detected	See Section 11.3.
A002	RAM Error (CP)	ROM checksum error or a	• Cycle power to the flowmeter.
		RAM location cannot be	• The flowmeter might need service. Contact Micro Motion.
		written to	See Section 11.3.
A003	Sensor Failure	Continuity failure of drive	• Check for slug flow. See Section 11.14.
		circuit, LPO, or RPO, or	• Check the test points. See Section 11.19.
		LPO-RPO mismatch when	• Check the sensor circuitry. See Section 11.20.
		driving	• Check sensor tubes for plugging.
			• If the problem persists, contact Micro Motion. See
			Section 11.3.
A004	Temperature	Combination of A016 and	• Check the sensor RTD circuitry. See Section 11.20.
	Sensor Failure	A017	• Verify that process temperature is within range of sensor
			and transmitter.

• If the problem persists, contact Micro Motion. See Section 11.3.

A005	Input Overrange	The measured flow has
		exceeded the maximum

flow rate of the sensor (ΔT > 200 μs)

•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.

A006	Not Configured	Combination of A020 and	• Check the characterization. Specifically, verify the FCF
		A021	and K1 values. See Section 6.2.
			• If the problem persists, contact Micro Motion. See
			Section 11.3.
A008	Density Overrange	The measured density has	• If other alarms are present (typically, A003, A006, A102, or
		exceeded 0–10 g/cm3	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.

116 Micro Motion® Model 2400S Transmitters for DeviceNet™