YOKOGAWA MG8G, Руководство пользователя, Страница: 54 / 63

<12. TROUBLESHOOTING>
12-1
IM 11P03A03-01E 6th Edition : Jan. 26, 2022-00
12. TROUBLESHOOTING
This chapter describes errors detected by the self-diagnostic function and troubles during
measurement, such as output fluctuations.
12.1 Errors and Remedies
12.1.1 Checking the Error Code
An error will occur if a failure is detected in the sensor, constant temperature chamber, or
analyzer’s internal circuit. When an error occurs, the FAIL lamp turns on and the Fail contact is
activated. As for the calibration coefficient error, the FAIL lamp turns on and the Fail contact is
activated only when semiautomatic or automatic calibration function is enabled. To check an error
code, follow the procedure below.
(1) Switch to MAINT mode and enter the password.
(2) Change the Function Number to “40.” Press the EXEC key. The current error code will be
displayed.
(3) If no error is being generated, the DATA display shows “oooo.”
The types of errors detected by the self-diagnostic function and remedies are summarized in
Table 12.1.
Table 12.1 Errors and Remedies
Error Type Code Description Action Remedy
Sensor unit
error
E-10 Sensor emf continues to exceed
400 mV for at least 10 seconds.
Remove the causes and
reset the error status in
Function No. 41.
E-11 Sensor emf continues to fall below
–50 mV for at least 10 seconds.
Constant
temperature
chamber
error
E-20
In stabilization period or steady state,
heater temperature continues to fall
below 55 °C for at least 10 seconds.
Turn off power to
heater.
Remove the causes. Turn
the power off and on again
to restart.
If error occurs again,
contact Yokogawa Service.
E-21
In stabilization period or steady state,
heater temperature continues to
exceed 65 °C for at least 10 seconds.
E-22 In warm-up period, heater
temperature fails to rise.
Error code blinks on
DATA display. Turn off
power to heater.
E-23
In warm-up period, heater
temperature continues to exceed
65 °C for at least 10 seconds.
Analog error
E-30
Failure occurs in A/D converter on
circuit.
Turn off power to
heater.
Turn the power off and on
again to restart.
If error occurs again,
contact Yokogawa Service.
E-31
E-32
E-33
Voltage of sensor unit exceeds input
range of A/D converter.
Memory
error
E-40 Failure occurs in memory device on
circuit.
Turn off power to
heater.
Turn the power off and on
again to restart.
If error occurs again,
contact Yokogawa Service.
Calibration
coefficient
error
E-50
Zero calibration coefficient is outside
of ±1.25% O
2
.
In manual calibration,
error code appears
on DATA display*.
In semiautomatic or
automatic calibration,
Fail contact is
activated and FAIL
lamp turns on.
Remove the causes.
Recalibrate the instrument
or reset the error status in
Function No. 42.
E-51
Span calibration coefficient is below
0.9 or above 1.09.
* When a calibration coefficient error occurs during manual calibration, the Fail lamp will not turn on and the Fail contact is not
activated.