Remedies When Fault Occurs - YOKOGAWA ZR22G User Manual

Table 12.1
Alarm
Number
001 Hardware failure
002 Internal com. failure
003 MAC address read failure
004 Converter user param.
failure
016 Cell voltage failure
017 Heater temperature failure
018 A/D converter failure
019 Sensor EEPROM failure
020 Sensor user param. failure
12.1.2

Remedies When Fault Occurs

(1) Alarm 016: Cell electromotive force error
This Fault occurs when the cell (sensor) voltage input to the converter falls below -50 mV
(corresponding to about 200 vol%O
voltage falling below -50 mV:
(1) Poor contact in terminal connections between the converter and detector
(2) Breakage in wiring cable between the converter and the detector
(3) Damage or deterioration of the sensor assembly
(4) Continuity failure between the sensor assembly electrode and the contact
(5) Wiring failure inside the detector
(6) Abnormality in electrical circuits in the converter
Types of Fault , Reasons for Occurrence
Type
Occurs when internal storage hardware fails.
This error occurs when there is an error in internal storage
communication.
This error occurs when there is an error in MAC address being
read.
This error occurs when there is an error in reading converter
setup data.
Occurs when the cell (sensor) electromotive force input to
converter becomes less than -50 mV.
Occurs when temperature of the heater does not rise during
warm-up, or when the temperature drops below 730°C or rises
above 780°C after the warm-up.
Also, when the polarity of the thermocouple output (TC+, TC-)
from sensor is reversed.
Occurs when an error occurs in A/D converters in the electric
circuitry of converter internal storage.
This error occurs when writing to memories is not performed
normally in the electric circuitry of converter internal storage.
This error occurs when reading sensor setup data is abnormal.
). The following are considered to be the causes for the cell
2
<12. Troubleshooting>
Occurrence Conditions
IM 11M12G01-02EN
12-2
1sh Edition : Mar. 25, 2021-00