Yokogawa Wireless Temperature Transmitter YTA510 - Manual (Page 34)

3. OPERATION
IM 01C50T01-01E 3-21
Table 3.5 List of Warnings
The LRV setting is lower than the
temperature range (GS guaranteed value).
The LRV setting is higher than the
temperature range (GS guaranteed value).
The URV setting is lower than the
temperature range (GS guaranteed value).
The URV setting is higher than the
temperature range (GS guaranteed value).
The setting is lower than the recommended
minimum span.
Sensor 1 input temperature is lower than
the measurement range of YTA series.
Sensor 1 input temperature is higher than
the measurement range of YTA series.
Sensor 2 input temperature is lower than
the measurement range of YTA series.
Sensor 2 input temperature is higher than
the measurement range of YTA series.
There is a problem with input (setting
status) specified to SV map.
There is a problem with input (setting
status) specified to TV map.
There is a problem with input (setting
status) specified to 4V map.
Fixed current value is output now.
The sensor backup mode is set.
The software write protection is not set.
Unexpected write cannot be prevented.
The EEPROM checksum field is using the
spare 4 (the last area). This means there is
no spare area for writing the EEPROM
checksum.
The hardware write protection is not set.
Unexpected write cannot be prevented.
Check the LRV setting.
Check the LRV setting.
Check the URV setting.
Check the URV setting.
Set URV-LRV to be greater than recommended
minimum span.
Check process: Verify correct sensor selection for
temperature range.
Check process: Verify correct sensor selection for
temperature range.
Check process: Verify correct sensor selection for
temperature range.
Check process: Verify correct sensor selection for
temperature range.
Correct SV mapping.
Correct TV mapping.
Correct 4V mapping.
The transmitter is now in Test output mode or
multi-drop mode. Return to normal operation, if
desired.
Turn the sensor backup mode OFF.
Set the protect parameter to Yes to enable the
write protect mode and prevent unexpected
changes.
There is no problem with current operation;
however, if EEPROM is damaged, EEPROM
FAILURE will be indicated.
Set the jumper(SW2) on the CPU assembly to
“Y” to prevent unexpected parameter changes.
Parameter Status Group(note)
group1
group2
group3
group4
Countermeasure
T0305.EPS
LRV Too Low
LRV Too High
URV Too Low
URV Too High
Span Too Small
Snsr1 Temp Low
Snsr1 Temp High
Sns2 Temp Low
Snsr2 Temp High
Illegal SV Map
Illegal TV Map
Illegal 4V Map
Fixed Current
Snsr Backup Set
Soft Not Protect
Last Sum Area
Hard Not Protect
Note: Group in “Set warning enbl.” See 3.6.2
(2) Checking with the Integral Indicator
If an error is detected in the self-diagnostic, an error
code is displayed on the digital indicator. If there is
more than one error, the error codes appear in turns.
Refer to “List of Errors” to check the error contents
and the countermeasure.
F0302.EPS
Figure 3.6 Example of Error Code Display