Emerson Series 3000 MVD User Manual

209

Some alarms can be reclassified. For example:

•

The default severity level for Alarm A020 (calibration factors unentered) is Fault, but you can 
reconfigure it to either Informational or Ignore.

•

The default severity level for Alarm A102 (drive over-range) is Informational, but you can 
reconfigure it to either Ignore or Fault.

For information on which alarms can be reclassified, see Section 22.7. For information on how to 
reclassify alarms, see Section 6.3.1.

By default, the Series 3000 device immediately sets outputs to their configured fault levels when a 
fault is encountered. For specific faults, you can delay this action by changing the fault timeout to a 
non-zero value (see Chapter 8

. If fault timeout is configured:

•

During the fault timeout period, the device continues to report its last valid measurement.

•

The fault timeout applies only to the mA output, frequency output, and discrete output. Fault 
indication via digital communications is unaffected.

The fault timeout is not applicable to all faults. See Section 22.7 for information about which faults 
are affected.

Alarms are organized into four alarm categories, in the following order of priority:

•

Electronics

•

Sensor (Model 3500 and Model 3700 transmitters only)

•

Process

•

Configuration

Information about alarm occurrences is maintained and displayed in three different ways:

•

Active alarm log (see Figure 22-2) – Lists:

-

All alarms that are active (the condition that caused the alarm is active)

-

All alarms that have not been acknowledged (even if the condition causing the alarm is no 
longer active)

alarms, fault indication begins as soon as the fault condition is recognized. Tables 22-4 through 22-6 include information on which 
alarms are affected by the fault timeout. To configure fault timeout, see Chapter 8.

Fault

Yes

Yes

Yes

Yes

Informational

Yes

Yes

Yes

No

Ignore

Yes

No

No

No