Yokogawa Wireless Temperature Transmitter YTA510 - Manual (Page 59)

<8. Maintenance>
8-8
IM 01C50E01-01EN
Table 8.3 Cause and Countermeasure
Observed Problems Possible Cause Countermeasure Related Parameter
Output fluctuates greatly. Input adjustment by user was
not correctly done.
Set or clear the user adjustment
value.
• Lin Type
• Sensor Range
Damping adjustment is not
correct.
Set the damping adjustment to
0.
• Process Value Filter
Time
Transmitter outputs fixed
current.
Input adjustment by user was
not correctly done.
Set or clear the user adjustment
value.
• Lin Type
• Sensor Range
The simulation function is set
to ON.
Set the simulation function to
OFF.
• Simulate Switch
Output is reversed. The lower limit value is greater
than the upper limit value.
Set the correct value to the
upper limit value and the lower
limit value.
• Lin Type
• Sensor Range
• Cal Point Lo
• Cal Point Hi
Parameters cannot be
changed.
The transmitter is in write
protect status.
Release write protect. • UAP Option
• Hardware Write Protect
8.5.3 Errors and Countermeasures
Table 8.4 Error Message Summary
Integral
indicator
Factory
NAMUR
category
Bit
Diagnostic
Status
Diagnostic
Status Detail
Cause
Release/
recovery
conditions
(except
restart)
Output
Operation
Action
AL.02
AMP.
ERR *2
F
Bit
27
Faults in
electronics
AMP ERR
Amplifier
temperature
sensor error
None
The output
is fixed to
±99999°C.
The sign is
dependent on
the burnout
switch at the
LCD board or
Burn Out Type
parameter *4 .
Replace the
amplifier.
MEMORY
ERROR
Amplifier memory
failure
None
Same as
above
Replace the
amplifier.
ADC ERROR Amplifier AD
converter failure
None
Same as
above
Replace the
amplifier.
AL.03
FUP.
ERR *2
Firm Update
ERR
Firmware update
write error
None ----
Replace the
amplifier.
AL.10
S1.FAIL *2
F
Bit
26
Faults in
sensor or
actuator
element
S E N S O R 1
FAILURE
Sensor 1 burnout None
The output
is fixed to
±99999°C.
The sign is
dependent on
the burnout
switch at the
LCD board or
Burn Out Type
parameter *4 .
Replace the
sensor 1.
AL.12
RJ.FAIL *2
T E R M S N S
FAILURE
CJC sensor
burnout
None
Operable at
the CJC value
(0°C).
Replace the
CJC sensor.