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132 Micro Motion
®
Model 2400S Transmitters for PROFIBUS-DP
Troubleshooting
11.13 Checking process variables
Micro Motion suggests that you make a record of the process variables listed below, under normal
operating conditions. This will help you recognize when the process variables are unusually high or
low.
• Flow rate
• Density
•Temperature
• Tube frequency
• Pickoff voltage
•Drive gain
For troubleshooting, check the process variables under both normal flow and tubes-full no-flow
conditions. Except for flow rate, you should see little or no change between flow and no-flow
conditions. If you see a significant difference, record the values and contact Micro Motion customer
service for assistance.
Unusual values for process variables may indicate a variety of different problems. Table 11-3 lists
several possible problems and suggested remedies.
A132 Simulation Mode Active Simulation mode is
enabled
• Disable simulation mode. See Section 11.10.
Simulation Mode Active
A133 PIC UI EEPROM Error EEPROM data on the user
interface module is corrupt
• Contact Micro Motion.
PIC UI EEPROM Error
(1) Depending on the method you are using to view the alarm, different messages may be displayed. This table shows two possible
message versions. The ProLink II version is displayed in the second message of each pair.
(2) Applies only to systems with the original version of the meter verification application.
(3) Applies only to systems with Smart Meter Verification.
Table 11-3 Process variables problems and remedies
Symptom Cause Suggested remedy
Steady non-zero flow rate under
no-flow conditions
Misaligned piping (especially in new
installations)
• Correct the piping.
Open or leaking valve • Check or correct the valve
mechanism.
Bad sensor zero • Rezero the flowmeter or restore the
factory zero or prior zero. See
Section 10.5.
Table 11-2 Status alarms and remedies continued
Alarm
code Message
(1)
Cause Suggested remedy