43
BE 58-602 Pulsar
®
Model R96 Radar Transmitter
• Failure
• Function Check
• Out of Specification
• Maintenance required
These categories are shown by both symbols and colors,
depending on the display capability.
In essence, this approach ensures that the correct diagnostic
information is available to the correct person-at the correct
time. In addition, it allows diagnostics to be applied, as
most appropriate, for a particular plant application (such as
process control engineering or asset management mainte-
nance). Customer specific mapping of diagnostics to these
categories allows for flexible configuration depending on the
user's requirements.
From an external Model R96 transmitter perspective, diag-
nostic information includes measurement of process condi-
tions, in addition to detection of internal device or system
anomalies.
As mentioned above, the indicators can be assignable (via
the DTM or host system) by the user to any (or none) of
the NAMUR recommended Status Signal categories:
Failure, Function Check, Out of Specification, and
Maintenance Required.
In the F
OUNDATION
Fieldbus
™
version of the relay, diagnos-
tic indicators can be mapped to multiple categories (e.g., as
shown in the diagram at left).
Indicators that are mapped to the Failure category will nor-
mally result in a current loop alarm output. The alarm state
for HART transmitters is configurable as high (22 mA),
Low (3.6 mA), or Hold (last value).
Users will not have the ability to unassign certain indicators
from the Failure signal category as the Model R96 user
interfaces will prohibit or reject such re-assignment entries).
This is to ensure that current loop alarms are asserted in situ-
ations where the device is not able to provide measurements
due to critical failures. (For example, if the alarm selection
has not been set to Hold or a fixed current mode is in effect.)
A default mapping of all diagnostic indicators will be applied
initially, and can be re-applied through use of a reset function.
Failure
Analog Output Error
Echo Lost
Calibration
Required
High
Elec Temp
Function
Check
Out of
Specification
Maintenance
Required
Diagnostic Indicators
NE-107
Status Signals
