GE Masoneilan 12420 - Page 59

® 2014 General Electric Company. All rights reserved. Masoneilan 12400 Series Transmitter/Controller Instruction Manual | 57
Message on
LCD / ValVue
(English))
Description Probable Cause Recommended Action
SOFTWARE
ERROR
Software error. The operating system
failed in conducting a task
A valid hidden record (in RAM) existing
upon reset indicating that a CPU
exception (such as invalid instruction )
occurred OR invalid target mode of the
device was found
Clear the condition using ValVue
software or HART host
If the failure persists, replace the
device
CALIBRATION
ERROR
Calibration of Analog Outputs (AOs) failed Calibration of AOs was outside the
acceptable range when attempting to
calibrate
Tank empty or wrong left/right mounting
position
Using precision measuring
equipment, perform calibration
according to boundary limits of AOs
AUTOTUNE
ERROR
The Autotune procedure has been
cancelled. Then the procedure failed to
complete
N/A If required start again the Autotune
procedure
DISPLACER
HEIGHT
Error of displacer height information
The span (in engineering units) exceeded
the displacer height plus 8.2 mm, entered
into the instrument data base
Check the engineering unit settings
and the true displacer height
MOUNTING
Mounting error
Mounting configuration (left/right)
conflicted zero and span transmitter
calibration
Check and do coupling if necessary
Recalibrate the device
TIME WORKING
Working time exceeded the configurable
threshold
N/A Perform maintenance of device
CURRENT
SIGNAL SENSOR
Error of 4-20 mA sensor Readback sensor reading was outside the
-1 to 30 mA range for five reads in a row
Clear the condition using ValVue
software or HART host
If the failure persists, replace the
device
LOOP OUTPUT
WARNING
Small mismatch between commanded
and read 4-20 mA loop output (lower than
0.32 mA)
Resistance change of external loop may
have changed
Clear the condition using ValVue
software or HART host
If the failure persists, replace the
device
4-20 LOOP
OUTPUT ERROR
Mismatch between commanded and read
4-20 mA loop output (lower than 0.64mA)
Resistance change of external loop may
have changed
Clear the condition using ValVue
software or HART host
If the failure persists, replace the
device
LOCAL USER
INTERFACE OFF
User Interface (UI) was turned off
When ambient temperature is lower than
-15 °C (+5 °F), LCD display is frozen. Then
UI are turned off to prevent from any
error of setting
N/A
VOLTAGE LOOP
LOW
Loop voltage below threshold Loop voltage or power supply voltage
may have changed
Check the loop voltage and ensure it
is above 10 VDC
VOLTAGE LOOP
HIGH
Loop voltage above threshold Loop voltage or power supply voltage
may have changed
Check the loop voltage and ensure it
is below 40 VDC (or 30 VDC in
intrinsically safe area)
VOLTAGE SHUNT
DIAGNOSTIC
LOW
Diagnostic (shunt) voltage below threshold Internal voltage may have changed Clear the condition using ValVue
software or HART host
If the failure persists, replace the
device
VOLTAGE SHUNT
DIAGNOSTIC
HIGH
Diagnostic (shunt) voltage above threshold Internal voltage may have changed Clear the condition using ValVue
software or HART host
If the failure persists, replace the
device