Yokogawa EJX115A - Manual (Page 36)

<3. Parameter Setting>
3-23
IM 01C25T01-06EN
(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.
3.3.13 Status Output (only for EJX series:
option code AL)
EJX
The transmitter has a contact output.
Select the type of output, status output, and set the
unit, value etc.
(1) Setting of status output
This feature is used for a transistor output (open
collector) of an on/off signal according to the
status of high and low alarm limits, which are
user-configurable values as shown in subsection
3.3.12 Alarm. The status output can be assigned
as any combination of the high or low limits of the
input pressure, input static pressure, or capsule
temperature.
• Procedure to call up the display
DD and DTM
(excluding EJX_
HART 5[1.2])
[Root Menu] → Detailed setup
→Output condition → Process
Alerts → DO config → DO Select
EJX_HART 5
[1.2] DTM
Configuration → Process Alerts →
DO Select
Display Item Contents (Select a output variable
from the list below)
Off –
Pres Differential pressure
SP Static pressure
Temp Temperature
Pres/SP Pressure and static pressure
Pres/Temp Pressure and temperature
SP/Temp Static pressure and temperature
Pres/SP/Temp Pressure, static pressure and
temperature
Diag Alarm Alarm for advanced diagnostics
(Refer to subsection 4.2.2.5)
All Alarm for pressure, static pressure,
temperature, and advanced
diagnostics