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81
Reference Manual
00809-0200-4728, Rev RA
Section 6: Troubleshooting
April 2015
6.4.2
Diagnostic messages: Warning
Invalid
Configuration
CONFG
SNSR 1
WARN
ERROR
CONFG
SNSR 1
WARN
ERROR
The Sensor Configuration
(type and/or connection)
does not match the sensor
output and is invalid.
1. Verify sensor type and number of wires
matched the Sensor Configuration of the
device.
2. Reset the device.
3. If error persists, download the
transmitter configuration.
4. If error still present, replace the
transmitter.
Field Device
Malfunction
ALARM
DEVICE
ALARM
FAIL
ALARM
DEVICE
ALARM
FAIL
The device has
malfunctioned or needs
immediate attention.
1. Perform a processor reset.
2. View other alerts to see if the
transmitter indicates a specific problem.
3. If the condition persists, replace the
device.
(1)
Sensor 1 is used here as an example. If Dual Sensors are ordered this alert can apply to either sensor.
Alert name
LCD screen LOI screen
Problem
Recommended action
Hot Backup
™
Active
HOT BU
SNSR 1
HOT BU
FAIL
HOT BU
SNSR 1
HOT BU
FAIL
Sensor 1 has failed (open or
shorted) and Sensor 2 is
now the primary process
variable output.
1. Replace Sensor 1 at you earliest
convenience.
2. Reset Hot Backup feature in the device
software.
Sensor Drift
Alert Active
(1)
WARN
DRIFT
WARN
ALERT
WARN
DRIFT
WARN
ALERT
The difference between
Sensor 1 and 2 has gone
beyond the user-configured
Drift Alert Threshold.
1. Verify sensor connections are valid on
the transmitter.
2. If necessary, check calibration of each
sensor.
3. Verify process conditions match
sensor outputs.
4. If calibration fails, one of the sensors
has failed. Replace it at your earliest
convenience.
Sensor
Degraded
WARN
SNSR 1
DEGRA
SNSR 1
WARN
SNSR 1
DEGRA
SNSR 1
The resistance of the
thermocouple loop has
exceeded the configured
threshold. This could be
caused by excess EMF.
1. Check terminal connections on the
644 terminal screws for corrosion.
2. Check the thermocouple loop for any
signs of corrosion in terminal blocks,
wire thinning, wire breaks, or faulty
connections.
3. Verify the integrity of the sensor itself.
Harsh process conditions may cause
long-term sensor failures.
Table 6-2. Status: Failed – Fix Now
Alert name
LCD screen LOI screen
Problem
Recommended action
Содержание Rosemount 644
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