Yokogawa EJX930A - Manual (Page 73)

<4. Diagnostics>
4-23
IM 01C25R02-01E
4.3 Alarms and Countermeasures
Table 4.5 Alarm Message Summary
Integral
indicator
HART configuration
tool display
Cause
4-20mA Output
operation during error
Countermeasure
Status
group
* 1
Diagnostic
List
group * 2
AL. 01
CAP.ERR
P sensor error * 1
Pressure Sensor
Error * 2
Sensor problem. Outputs the signal (High
or Low) set with burnout
direction switch.
[status output: undefined]
(About the output signal,
refer to subsection 3.3.9)
Replace capsule if
the error recurs after
the transmitter is
restarted.
1
H
ar
dw
ar
e
Fa
ilu
re
CT sensor error * 1
Capsule Temperature
Sensor Error * 2
Capsule temperature
sensor problem.
Replace capsule.
Cap EEPROM error * 1
Capsule EEPROM
Error * 2
Capsule EEPROM
problem.
AL. 02
AMP.ERR
AT sensor error * 1
Amp Temp Sensor
Error * 2
Amplifier temperature
sensor problem.
Replace amplifier.
Amp EEPROM error * 1
Amp EEPROM Error
* 2
Amplifier EEPROM
problem.
CPU board error * 1
CPU Board Error * 2
Amplifier problem.
2
AD Converter Error * 1
A/D Converter Error * 2
A/D Converter problem.
4 AL. 03
ET.ERR
ET sensor error * 1
External Temp Sensor
Error * 2
External temperature
sensor disconnection.
Check external
temperature sensor.
—
No device ID * 1
No Device ID * 2
No device ID is found. Continues to operate and
output.
Replace amplifier.
2
AL. 10
PRESS
P outside limit * 1
Pressure Outside
Limit * 2
Differential pressure is
outside measurement
range limit of capsule.
When PV is Pres
Output AO upper limit or
AO Lower limit. (Refer to
subsection 3.3.1)
Check input or
replace capsule
when necessary.
3
Tr
an
sd
uc
er
S
ta
tu
s
AL. 11
ST. PRSS
SP outside limit * 1
Static Pressure
Outside Limit * 2
Static pressure exceeds
limit.
When PV is SP
Output AO upper limit or
AO Lower limit. (Refer to
subsection 3.3.1)
AL. 12
CAP.TMP
CT outside limit * 1
Cap Temp Outside
Limit * 2
Capsule temperature is
outside range (–50 to
130°C).
Continues to operate and
output.
Use heat insulation
or make lagging to
keep temperature
within range.
AL. 13
AMP.TMP
AT outside limit * 1
Amp Temp Outside
Limit * 2
Amplifier temperature
is outside range (–50 to
95°C).
AL. 14
EXT. TMP
ET outside limit * 1
External Temp
Outside limit * 2
External temperature is
outside range.
When PV is ET
Output AO upper limit or
AO Lower limit. (Refer to
subsection 3.3.1)
AL. 15
EXT. TMP
OHM outside limit * 1
OHM Outside limit * 2
External temperature
sensor resistance is out
specification.
AL. 16 PLS PLS outside limit * 1
PLS RNG Outside
Limit * 2
Pulse output is out
specification.
Continues to operate and
output.
Check settings and
change them.
*1: DD (HART 5/HART 7), DTM (HART 7)
*2: DTM (HART 5)
*3: Available only for HART 7