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Manual
MS-00809-0100-0470
8
Troubleshooting
8.1
Alarms
The following alarms may appear on the Rosemount 470XA .
8.1.1
Maintenance Mode
The Maintenance mode is on. The flag in the Modbus
switched on, and the discrete out for activating the common alarm (if configured) is on.
Recommended action
Refer to
8.1.2
Power Failure
The 24 Vdc power supply to the GC failed.
NOTICE
The SET time indicates the time power was restored to the GC.
Recommended action
To determine when the power was lost, look at the time of the last analysis before the
power fail occurred.
8.1.3
User Calculation Failure
An error occurred in one of the user-defined calculations.
Recommended action
Check the user calculations for divide by zero errors or for incorrect references.
8.1.4
Low Battery Voltage
The CPU battery voltage is low.
Recommended action
The battery is soldered onto the CPU board; contact the factory to replace the CPU
board.
8.1.5
Stream Skipped
There was an error in stream sequencing that resulted in failure to analyze one of the
streams in the stream sequence. This alarm will occur if someone switches the stream's
usage to Unused without removing the stream from the stream sequence.
Recommended actions
Rosemount 470XA
Maintenance mode
1. IN MON2020, select Stream Sequence from the Application menu.
2. Delete the unused stream from the sequence.
map for Maintenance mode is
®
for more information.
Troubleshooting
June 2023
117
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