YOKOGAWA UT35A-L, Руководство пользователя

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16-3
IM 05P04D41-01EN
Troubleshooting, Maintenance, and Inspections
16
16.1.3 Errors during Operation
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
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
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
Analog input terminal sensor burnout
Check wiring and sensor.
Error indication is erased in normal
operation.
Setup parameter
(PV1.E)
PV input burnout error ) 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)
PV input over-scale
PV input under-scale
(PV values out of -5 to 105%)
PV input is out of -5 to 105%. Check analog input value.
Normal
indication
0.000 00000
(Decimal point
on the left of
the Symbol
display blinks)
–
Setup parameter
(OP.ER)
Communication error
(RS-485 communication)
Framing parity error
Buffer overflow
Inter-character time-out
Checksum error (PC link communication
with checksum)
CRC check error (Modbus/RTU)
LRC check error (Modbus/ASCII)
Check the communication parameters.
Recovery at normal receipt.
Hold down any key to stop blinking.
Undefined Undefined – – Faulty MCU MCU is corrupted.
Faulty
Contact us for repair.
Undefined Undefined – –
Faulty DCU (ROM/RAM error,
corrupted)
DCU is corrupted.
Faulty
Contact us for repair.
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 T
roubleshooting