YOKOGAWA FLXA21, Руководство пользователя

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<6. Function block parameters and Methods>
6-17
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
Table 6.5 DEVICE_STATUS_3 (FLXA21-PH: Sensor Fault)
Error Description and Remedy
NAMUR
NE107
category
DIAGNOSIS
(Classic)
DIAGNOSIS
(Condensed)
DIAGNOSIS
EXTENSION
pH too high pH reading above the higher limit.
Check connections and cable.
Replace sensor.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
pH too low pH reading below the lower limit.
Check connection and cable.
Replace sensor.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Temperature too high Measured process temperature
exceeds the lower limit.
Check process temperature.
Check programmed sensor type.
Check connections and cable.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Temperature too low Measured process temperature
exceeds the upper limit.
Check process temperature.
Check programmed sensor type.
Check connections and cable.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
ORP too high ORP reading above 1500mV.
Check connections and cable.
Replace sensor.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
ORP too low ORP reading below -1500mV.
Check connections and cable.
Replace sensor.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
rH too high rH reading above 100rH.
Check connections and cable.
Replace sensor.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
rH too low rH reading below 0rH.
Check connections and cable.
Replace sensor.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Impedance 1 too
high
Sensor fouled. Liquid earth
disconnected. Sensor not
immersed. Insufficient electrolyte.
Clean or replace sensor. Check
sensor immersion. Check
electrolyte tank.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Impedance 1 too low Sensor broken. Damaged or
damp connections.
Check impedance settings.
Replace sensor.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Impedance 2 too
high
Sensor fouled. Liquid earth
disconnected. Sensor not
immersed. Insufficient electrolyte.
Clean or replace sensor. Check
sensor immersion. Check
electrolyte tank.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Impedance 2 too low Sensor broken. Damaged or
damp connections.
Check impedance settings.
Replace sensor.
F Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Temp. comp. matrix
error
Temp. comp. matrix is not
properly defined.
Execute 'Check values' on the
display of FLXA21.
F Configuration
not valid
Failure of
the device or
armature
Configuration
Error
Checksum error
in SENCOM
(Manufacturing data)
Software problem in
SENCOM(Manufacturing data)
Contact your local sales office.
F Hardware
failure
electronics.
Failure of
the device or
armature
Sensor
Electric
Failure
Checksum error in
SENCOM (Setting
data)
Contact your local sales office. F Hardware
failure
electronics.
Failure of
the device or
armature
Sensor
Electric
Failure
EEPROM error in
SENCOM
Write or read error in the
EEPROM.
Contact your local sales office.
F Hardware
failure
electronics.
Failure of
the device or
armature
Sensor
Electric
Failure
SENCOM comm.
error
SENCOM communication is not
correct.
Check connection of SENCOM
sensor.
F Hardware
failure
electronics.
Failure of
the device or
armature
Electric
Failure