Alert Messages And Fail Safe Type Selection - Emerson Rosemount 2051 Reference Manual

Troubleshooting
November 2016
6.6

Alert messages and fail safe type selection

Table 6-5
diagnostic condition. This table can be used to determine what type of fail safe value setting
is preferred. Fail safe type can be set with a Class 2 Master under Fail Safe >> Fail Safe Mode.
Table 6-5. Alert Messages
Diagnostic
Name
PV Simulation
Enabled
LOI button
pressed
Pressure beyond
sensor limits
Module
Temperature
Beyond limits
Sensor Module
Memory Failure
No Sensor
Module Pressure
Updates
No Device
Temperature
Updates
Circuit Board
Memory Failure
LOI button stuck
Table 6-6. Output Status Bit Definition
Description
Bad - passivated
Bad, maintenance alarm, more diagnostics available
Bad, process related - no maintenance
Uncertain, substitute set
Uncertain, process related, no maintenance
Good, ok
Good, update event
Good, advisory alarm, low limit
Good, advisory alarm, high limit
Good, critical alarm, low limit
Good, critical alarm, high limit
Good, function check
56
defines the output status and LCD display messages that will be driven by a
Output status (based on fail safe type)
Use fail safe
value
Depends on
simulated
value/status
Good, function
check
Uncertain,
substitute set
Uncertain,
substitute set
Bad, passivated
Uncertain,
substitute set
Uncertain,
process related,
no maintenance
Bad, passivated
Bad, passivated
Use last good Use wrong calculated
value value
Depends on
Depends on simulated
simulated
value/status
value/status
Good, function
Good, function check
check
Uncertain, Bad, process related,
substitute set maintenance alarm
Uncertain, process Uncertain, process
related, no related, no
maintenance maintenance
Uncertain, Bad, maintenance
substitute set alarm
Uncertain, Bad, process related,
substitute set maintenance alarm
Uncertain, process Uncertain, process
related, no related, no
maintenance maintenance
Bad, passivated Bad, passivated
Bad, passivated Bad, passivated
HEX
0x23
0x24
0x28
0x4B
0x78
0x80
0x84
0x89
0x8A
0x8D
0x8E
0xBC
Reference Manual
00809-0300-4101, Rev BB
LCD
display
status
N/A
N/A
SNSR
SNSR
SNSR
SNSR
SNSR
ELECT
ELECT
DECIMAL
35
36
40
75
120
128
132
137
138
141
142
188
Troubleshooting