Yokogawa EJX440A - Manual (Page 32)

IM 01C25T03-01E 4-3
4. SELF-DIAGNOSTICS
4.2 Alarms and Countermeasures
Table 4.2 Alarm Message Summary
Indicator BT200 display Cause Countermeasure
Output operation
during error
None GOOD
AL. 01
CAP. ERR 01: P-SENSOR ERR
AL. 02
AMP. ERR 02: AT-SENSOR ERR
AL. 11
ST. PRSS 11: SP OVER SPEC
AL. 12
CAP. TMP 12: CT OVER SPEC
AL. 13
AMP. TMP 13: AT OVER SPEC
AL. 30
RANGE 30: P OVER RANGE
AL. 35
P. HI 35: P HIGH ALARM
AL. 36
P. LO 36: P LOW ALARM
AL. 37
SP. HI 37: SP HIGH ALARM
AL. 38
SP. LO 38: SP LOW ALARM
AL. 39
TMP. HI 39: CT HIGH ALARM
AL. 40
TMP. LO 40: CT LOW ALARM
AL. 51
P. URV 51: P ILLEG URV
AL. 52
P. SPN 52: P ILLEG SPAN
AL. 53
P. ADJ 53: P SPAN ADJ
53: P ZERO ADJ
AL. 54
SP. RNG 54: SP ILLEG LRV
54: SP ILLEG URV
54: SP ILLEG SPAN
AL. 55
SP. ADJ 55: SP SPAN ADJ
AL. 60
SC. CFG 60: SC CONFIG ERR
55: SP ZERO ADJ
Static pressure exceeds
limit.
Capsule temperature is outside
range (–50 to 130
°
C).
Amplifier temperature is outside
range (–50 to 95
°
C).
Output is outside upper or lower
range limit value.
AL. 31
SP. RNG 31: SP OVER RANGE Static pressure exceeds
specified range.
Input pressure exceeds specified
threshold.
Input static pressure exceeds
specified threshold.
Detected temperature exceeds
specified threshold.
AL. 50
P. LRV 50: P ILLEG LRV Specified value is outside of
setting range.
Specified values or settings do
not meet the conditions.
T0401.EPS
Sensor problem.
01: CT-SENSOR ERR Capsule temperature sensor
problem.
01: C-EEPROM ERR Capsule EEPROM problem.
Amplifier temperature sensor
problem.
02: A-EEPROM ERR Amplifier EEPROM problem.
02: CPU BOARD ERR Amplifier problem.
Continues to operate and
output.
Continues to operate and
output.
Continues to operate and
output.
Continues to operate and
output holding static
pressure in %.
Outputs the signal (Hi or Low)
set with parameter D26.
[Status output: undefined]
Use heat insulation or
make lagging to keep
temperature within
range.
Check input and range
setting, and change
them as needed.
Check input.
Adjust settings and
change them as needed.
Adjust settings and
change them as needed.
Check settings and change
them as needed.
Check settings and change
them as needed.
AL. 79
OV. DISP Displayed value exceeds
limit.
Check settings and change
them as needed.
Replace capsule when
error keep appearing error
even after restart.
Replace capsule.
Replace amplifier.
AL. 10
PRESS 10: P OVER SPEC Input is outside measurement
range limit of capsule. Outputs upper range limit (URL)
or lower range limit (LRL).
Outputs upper range value
(URV) or lower range value
(LRV).
Continues to operate and
output.
Holds output immediately
before error occurred.
Check input or replace
capsule when necessary.
Check capsule
temperature.
Continues to operate and
output without signal
characterizing.
Continues to operate and
output.