Yokogawa EJA115 - Manual (Page 33)

IM 01C22T03-00E 7-2
7. IN-PROCESS OPERATION
7.2.2 Status of Each Parameter in Failure
Mode
The DTM and EDDL messages when the LCD
indicates an alarm are listed in the following table.
Table 7.1 Status of each parameter in failure mode
Alarm
Display
Cause of Alarm Transducer Block AI1/AI2 Block
AL. 01 Capsule Module Failure
Pressure/Measured value. Quality
=BAD-Sensor Failure
Static Pressure/sensor Temperature.
Quality=BAD-Sensor Failure
Output Value and Quality depend on
Fail Safe Mode *1
AL. 02
AMP Module Failure 1
AMP Module Failure 3
Pressure/Measured value.Quality
=BAD- Device Failure
Static Pressure/sensor Temperature.
Quality=BAD- Device Failure
Output Value and Quality depend on
Fail Safe Mode *1
AL. 03 AMP Module Failure 2
Pressure/Measured value. Quality
=BAD-Device Failure
Static Pressure/sensor Temperature.
Quality=BAD- Device Failure
Output Value and Quality depend on
Fail Safe Mode *1
AL. 21
Physical Block is in
O/S mode
Pressure/Measured value. Quality
=BAD
Static Pressure/sensor Temperature.
Quality=BAD
Output Quality=Bad-Out of Service
AL. 22
Transducer Block is in
O/S mode
Pressure/Measured value. Quality
=BAD-Out of Service
Static Pressure/sensor Temperature.
Quality=BAD-Out of Service
Output Quality=Bad-Out of Service
AL. 42
Static Pressure is out
Of normal range
Pressure/Measured value. Quality
= Uncertain
Static Pressure. Quality
= Uncertain-value uncertain
Sensor Temperature. Quality
= Uncertain
Output Quality=
Uncertain
AL. 43
Fluid temperature is
out of normal range
Pressure/Measured value. Quality
= Uncertain
Static Pressure. Quality
= Uncertain
Sensor Temperature. Quality
= Uncertain-value uncertain
Output Quality=
Uncertain
AL. 41
Differential Pressure is
out of normal range
Pressure/Measured value. Quality=
Uncertain- value uncertain
Static Pressure/sensor Temperature.
Quality= Uncertain
Output Quality=Uncertain
value uncertain
AL. 23 AI1 Block is in O/S mode – AI1 Output Quality=Bad-Out of Service
AL. 61
Data is out of LCD
Display range
– –
AL. 62
Simulation is enabled
in AI1 Block
–
AI1 Output Value and Quality are
Simulated
AL. 63 AI Block is in MAN mode –
AI1 Output Value and Quality are
user set value
AL. 64
Zero adjust value is out
Of normal range Pressure/Measured value. Quality
=BAD: Configuration error Output Value and Quality depend on
Fail Safe Mode *1
– AI2 Block is in O/S mode –
AI2 Output Quality
=Bad- Out of Service
T0701.EPS