YOKOGAWA DpharpEJX vigilantplant EJX Series, User Manual

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IM 01C25T03-01E 3-18
3. OPERATION
(18) Process Alarm (G10: P AL MODE, G11: P
HI.AL VAL, G12: P LO.AL.VAL)
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 4.2 Alarm Message
Summary for the specific alarm code to be generated.
• Example: Set alarm mode from OFF to HI.AL
DETECT .
ESC
SET
G10:P AL MODE
HI.AL DETECT
FEED NO ESC
SET
G10:P AL MODE
INHIBIT
< INHIBIT >
< HI.AL DETECT >
< LO.AL DETECT >
< HI/LO.AL DETECT >
Use the or key
to select HI. AL DETECT .
Press the key twice to
enter the setting.
Press the (OK) key.
Alarm code is generated when the
output goes beyond the value set
at G11: P HI. AL VAL.
F0346.EPS
• Example: Set the higher alert value of 75 for
alarm generation.
CODE CAPS CLR ESC
SET
G11:P HI.AL VAL
75.0000 kPa
FEED NO OK
SET
G11:P HI.AL VAL
100.000 kPa
+ 75 Set 75 .
Press the key twice to
enter the setting.
Press the (OK) key.
Then the alarm code “AL.35 P. HI”
is generated when the input
pressure goes beyond that value.
F0347.EPS
(19) Status Output (option code AL)
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 (18) Process Alarm. The status
output can be assigned as any combination of the high
or low limits of the input pressure, input static pres-
sure, or capsule temperature.
NOTE
No status output signal has been defined for a
CPU failure or hardware error. Use a 4-20 mA
signal to indicate a transmitter’s failure.
• Example: Set the status output to output an off
signal when the input pressure
exceeds 75 kPa with its alert mode of
HI. AL DETECT.
ESC
SET
E50:DO SELECT
PRES
FEED NO OK
SET
E50:DO SELECT
INHIBIT
< INHIBIT >
< PRES >
< SP >
< TEMP >
Use the or key
to select PRES .
Press the key twice to
enter the setting.
Press the (OK) key.
F0354.EPS
ESC
SET
E51:DO SIG.TYPE
OFF WHEN ALARM
FEED NO OK
SET
E51:DO SIG.TYPE
ON WHEN ALARM
< ON WHEN ALARM >
< OFF WHEN ALARM >
Use the or key
to select OFF WHEN ALARM .
Press the key twice to
enter the setting.
Press the (OK) key.
Status output for higher alert value
Status output for lower alert value
F0350.EPS
Output
(%)
Status output
Status output
Time (t)
Time (t)
Setting
value
Setting
value
5% of hysteresis
(5 C for heat)
Output
(%)
5% of hysteresis
(5 C for heat)
On Off
Example: Status output operation of ON WHEN AL. DETECT
On
On
On
Off