YOKOGAWA UT55A - Page 355

16-4
IM 05P01C31-01EN
16.1.3 ErrorsduringOperation
ErrorsduringOperation(1)
The errors shown below may occur during operation.
PVdisplay
(Operation
Display)
Setpoint
display
(Operation
Display)
Status indicator
(Operation
Display)
Parameterthat
displays error details
Error description Cause and diagnosis Remedy
AD.ERR
Normal
indication
(Note)
–
Setup parameter
(AD1.E)
Analog input terminal ADC error
•PVinput
• RSP
input (E1-terminal area)
• AIN2 input (E2-terminal area)
• AIN4 input (E4-terminal area)
Analog input terminal AD value error
Faulty
Contact us for repair.
RJC.E
(Displays
RJC.E
andPV
alternately.)
Normal
indication
(Note)
–
Setup parameter
(AD1.E)
Universal input terminal RJC error
•
PVinput
• RSP
input (E1-terminal area)
Universal input terminal RJC error
Faulty
Contact us for repair.
Set the parameter RJC to OFF to erase
error indication.
B.OUT
Normal
indication
(Note)
–
Setup parameter
(AD1.E)
Analog input terminal burnout
error
•
PVinput
• RSP
input (E1- terminal area)
• AIN2 input (E2-terminal area)
• AIN4 input (E4-terminal area)
Analog input terminal sensor burnout
Check wiring and sensor.
Error indication is erased in normal
operation.
Setup parameter
(PV1.E/PV2.E)
PVinputburnout
error
(Loop1, Loop2)
Burnoutofanalog
inputconnectedtoPV
Check wiring and sensor of connected
analog input terminal.
Error indication is erased in normal
operation.
OVER
-OVER
Normal
indication
–
Setup parameter
(PV1.E/PV2.E)
PVinputover-scale
PV
inputunder-scale
(PVvaluesoutof-5to105%)
(Loop1, Loop 2)
PVinputis
outof-5to105%.Alsooccurs
when the data out of range which is the
ladder computation result is input.
Check analog input value or ladder
program.
Normal
indication
Normal
indication
–
Setup parameter
(PV1.E/PV2.E)
RSP input burnout error
(Loop 1, Loop 2)
Burnout of analog input connected to
RSP
Check wiring and sensor. Error indication
is erased in normal operation.
Note: When an error occurs in input shown in Analog input display (Operation display).
 Setpoint
displayshowsthesamesymbolasthePVdisplay.
16.1Troubleshooting