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<3. Parameter Setting>
3-23
IM 01C25T01-06EN
3.3.12 Alarm
The function is used to display the alarm codes
when the input pressure exceeds the specified
value within the calibration range. The same is
available for the input static pressure and the
capsule temperature on the pressure sensor.
Refer to table 4.5 Alarm Message Summary for the
specific alarm code to be generated.
(1) Alarm Setting
Select the process variable at
Process Alert
which
the alarm is set, then set the alert mode for that
value.
• Procedure to call up the display
DD and DTM
(excluding EJX_
HART 5[1.2])
[Root Menu]
→ Detailed setup
→ Output condition → Process
Alerts →
EJX_HART 5[1.2]
DTM
Configuration → Process Alerts →
Selection of the
process variable
for alarm
→ Pres Alert (DTM only) →
Pres Alert mode: Pressure
→ SP Alert (DTM only) →
SP Alert mode: Static pressure
→ Temp Alert (DTM only) → Temp
Alert mode: Capsule temperature
Selection of alert
mode
Off: Disable the alert function
Hi. Al Detect: High side alert
detection
Lo. Al Detect: Low side alert
detection
Hi/Lo. Al Detect: High and Low
side alert detection
(2) Threshold Level Setting
Set the threshold of high and low alert value for
alarm generation.
• Procedure to call up the display by DD and
DTM (EJX HART 5 DTM based on FDT1.2)
DD and DTM
(excluding EJX_
HART 5[1.2])
[Root Menu]
→ Detailed
setup→ Output condition →
Process Alerts → Pres Alert
(DTM only) → Config Pres
Alerts →
→ Hi Alert Val
Set the threshold value of upper
side for pressure
→ Lo Alert Val
Set the threshold value of lower
side for pressure
DD and DTM
(excluding EJX_
HART 5[1.2])
[Root Menu]
→ Detailed
setup→ Output condition →
Process Alerts → SP Alert (DTM
only) → Config SP Alerts →
→ SP Hi Alert Val
Set the threshold value of upper
side for static pressure
→ SP Lo Alert Val
Set the threshold value of lower
side for static pressure
DD and DTM
(excluding EJX_
HART 5[1.2])
[Root Menu]
→ Detailed
setup→ Output condition →
Process Alerts → Temp Alert
(DTM only) → Config Temp
Alerts →
→ Temp Hi Alert Val
Set the threshold value of upper
side for capsule temperature
→ Temp Lo Alert Val
Set the threshold value of lower
side for capsule temperature
• Procedure to call up the display by EJX HART 5
DTM based on FDT1.2
EJX HART 5 DTM
based on FDT1.2
Configuration → Process Alerts
→
→ Hi Alert Val
Set the threshold value of upper
side for pressure
→ Lo Alert Val
Set the threshold value of lower
side for pressure
→ SP Hi Alert Val
Set the threshold value of upper
side for static pressure
→ SP Lo Alert Val
Set the threshold value of lower
side for static pressure
→ Temp Hi Alert Val
Set the threshold value of upper
side for capsule temperature
→ Temp Lo Alert Val
Set the threshold value of lower
side for capsule temperature
NOTE
When option code /DG6 is specified,
Diag
can
be also assigned to Status. The Hi Alert Val or
Lo Alert Val for
Diag
is defined by the following
parameters.
[Impulse Line Blockage Detection]
Limit meters to detect the blockage and
Condition error for ILBD operation is defined.
Refer to 4.2.2.1.
[Heat Trace Monitoring]
Flg temp Hi Alert Val
and
Flg temp Lo Alert
Val
parameters are used as the upper and
lower threshold for Status output. Refer to
4.2.3.2.