Yokogawa Wireless Temperature Transmitter YTA510 - Manual (Page 35)

<7. Errors and Warnings>
7-4
IM 01C50T02-01E
Code
Displayed
on LCD
Indication of DEVICE_
STATUS_#
Cause Remedy
AL150 PID2 in Bypass active The bypass action for PID2 is
active.
Reset BYPASS of PID2 to off.
AL160 Sensor1 Temp Too High The temperature read by sensor
1 is higher than the specified high
limit.\
Check the adequacy of the measurement
temperature range and use the
appropriate sensor type.
AL161 Sensor1 Temp Too Low The temperature read by sensor 1
is lower than the specified low limit.
Check the adequacy of the measurement
temperature range and use the
appropriate sensor type.
AL170 Sensor2 Temp Too High The temperature read by sensor
2 is higher than the specified high
limit.
Check the adequacy of the measurement
temperature range and use the
appropriate sensor type.
AL171 Sensor2 Temp Too Low The temperature read by sensor 2
is lower than the specified low limit.
Check the adequacy of the measurement
temperature range and use the
appropriate sensor type.
AL190 Stop Detection of Sensor
Burnout
Sensor burnout detection has been
stopped, and therefore a sensor
failure cannot be detected.
Set SENSOR_BURNOUT_DETECT to
0 (on).
AL191 Illegal Unit of AI1 The unit setting in XD_SCALE of
the AI1 block is illegal.
Correct the unit setting in XD_SCALE of
AI1 so that it matches the sensor type of
the input chosen for CHANNEL.
AL192 Illegal Unit of AI2 The unit setting in XD_SCALE of
the AI2 block is illegal.
Correct the unit setting in XD_SCALE of
AI2 so that it matches the sensor type of
the input chosen for CHANNEL.
AL193 Illegal Unit of AI3 The unit setting in XD_SCALE of
the AI3 block is illegal.
Correct the unit setting in XD_SCALE of
AI3 so that it matches the sensor type of
the input chosen for CHANNEL.
AL194 Illegal Unit of AI4 The unit setting in XD_SCALE of
the AI4 block is illegal.
Correct the unit setting in XD_SCALE of
AI4 so that it matches the sensor type of
the input chosen for CHANNEL.
AL198 Default Address Mode The physical address is left as the
default.
Set the operable address.
Table 7.3 Troubleshooting When Actual in MODE_BLK of a Function Block Cannot Change from O/S
Presumed Cause Remedy
The target mode of the function block in question is not set. Set the target mode of the block to Auto.
The actual mode of the resource block is O/S.
Set the target mode of the resource block to Auto.
Function block execution schedule is not set correctly. Set up the schedule using a configuration tool or the like.