YOKOGAWA UP55A - Page 389

16-4
IM 05P02C41-01EN
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)
RSP input burnout error
(Loop 1)
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 dis
play shows the same symbol as the PV display.
16.1Troubleshooting