Section 7 Troubleshooting The 370Xa; Alarms - Emerson Rosemount 370XA System Reference Manual

Section 7: Troubleshooting the 370XA
7.1

Alarms

Alarm
Maintenance Mode
Power Failure
User Calculation Failure
Low Battery Voltage
Stream Skipped
GC Idle
Description and Suggested Actions
The maintenance mode is on. The flag in the Modbus
map for maintenance mode is switched on, and the
discrete out for active the Common Alarm (if configured)
will be on. Refer to "Maintenance mode" on page 4-39
more information.
The 24VDC power supply to the GC failed. Note that the
SET time indicates the time power was restored to the
GC. To determine when the power was lost, look at the
time of the last analysis before the power fail occurred.
An error occurred in one of the User Defined calculations.
Check the user calculations for divide by zero errors or for
incorrect references.
The CPU battery voltage is low. As the battery is soldered
onto the board, the CPU board needs to be returned to
the factory to replace the battery correctly.
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 a stream usage is
switched to "Unused" in the Streams configuration, but is
still in the Stream Sequence. To correct this start
MON2020 and select Stream Sequence on the
Application menu.
The analysis mode was switched to GC Idle and there
was no connection to a MON2020 software session. If the
mode is changed to Idle while MON2020 is connected,
this alarm will not be generated. If the mode is switched to
Idle via the local operator interface, or the GC is in Idle
mode when a MON2020 software session is
disconnected, this alarm will be active.
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