PlantWeb
R
Alerts
March 2006
9-13
Table 9-2. Using PlantWeb Alerts (Continued)
PlantWeb
Alert and
(Group)
Alert
Category and
(Default)
Alert Condition
and (Default))
What the Alert is
Detecting
Effect on Valve /
Instrument
Recommended
Action
Help
Performance
Critical
(Performance)
User Config.
(Failed)
Performance
Critical
(Enabled)
Critical performance issues
based on continuous PD
tests internal to the
instrument.
None − Indicates
control has been lost
or severely reduced.
Check I/P, Relay,
Valve, Actuator
or Ext. Tubing as
indicated.
On-board diagnostics
have detected a critical
performance issue that
may result in loss of
control or severe
reduction in control
performance. Check or
replace the component
indicated in the possible
cause detail.
Performance
Reduced
(Performance)
User Config.
(Maintenance)
Performance
Reduced
(Enabled)
Reduced performance
issues based on continuous
PD tests internal to the
instrument.
None − Indicates
reduced performance.
Check I/P, Relay,
Valve, Actuator
or Ext. Tubing as
indicated.
On-board diagnostics
have detected a
performance issue that
has reduced control
performance. Check or
replace the component
indicated in the possible
cause detail.
Performance
Information
(Performance)
User Config.
(Advisory)
Performance
Information
(Enabled)
Performance Information
based on continuous PD
tests internal to the
instrument.
None − Indicates
information that may
pertain to control
performance.
No action
required.
On-board diagnostics
have detected an
abnormal performance
condition. No immediate
action required.
Table 9-3. Output Block PV Status
FEATURE_SEL
PW Alarms Set PV Status
Transducer Mode,
Actual
Active PlantWeb
Alarms
AO / DO
PV Status
(2)
AO / DO
PV Substatus
AO/DO PV
Limit Substatus
(1)
Enabled
OOS X Bad Device Failure
Constant
Man X Bad Non-specific
Constant
Auto Fail Uncertain Subnormal
See table 9-4
Auto Maint, no Fail Uncertain Non-specific
See table 9-4
Auto Advisory, no Fail, no Maint Good Advisory See table 9-4
Auto None Good Non-Specific See table 9-4
Not Enabled
OOS X Bad Device Failure
Constant
Man X Bad Non-Specific
Constant
Auto Fail Good Non-Specific
See table 9-4
Auto Maint, no Fail Good Non-Specific
See table 9-4
Auto Advisory, no Fail, no Maint Good Non-Specific See table 9-4
Auto None Good Non-Specific See table 9-4
NOTES:
X = No Effect
1. PV limit substatus reflects only READBACK limit substatus. SP limit substatus reflects only out block rate limits.
2. Firmware Revision 1.1 and earlier will set AO/DO PV Status to Bad if Feedback Sensor has failed, ie; Travel Sensor Fail. However, if the Travel Sensor fails, and the instrument
falls back to pressure, PV Status will remain good.
Table 9-4. Limit Sub Status
Out
Block
Transducer
Mode
In Cutoff
Region
Rate
Limited
Limit
Sub-Status
AO, DO OOS X X Constant
AO, DO MAN X X Constant
AO AUTO High X High Limited
AO AUTO Low X Low Limited
AO AUTO X High High Limited
AO AUTO X Low Low Limited
AO AUTO None None Not Limited
DO AUTO X High High Limited
DO AUTO X Low Low Limited
DO AUTO X None Not Limited
NOTE: X = No Effect
9