Yokogawa EJX930A - Manual (Page 164)

A8-14
IM 01C25R03-01E
A8.2.12 ILBD Parameter Lists
All the ILBD parameters belong to the SENSOR Transducer block.
Note: The Write Mode column contains the modes in which each parameter is write enabled.
O/S: Write enabled in O/S mode.
MAN: Write enabled in Man mode and O/S mode.
AUTO: Write enabled in Auto mode, Man mode, and O/S mode.
Relative
Index Index
Parameter Name
Factory
Default
Write
Mode
Explanation
83 2083 DIAG_MODE Stop (0) AUTO Select the function mode for the ILBD.
Stop (0): The blockage detection is stopped.
Calculation (1): The blockage detection is carried out. The alarms
are generated along with the detected result.
Reference (2): The reference values are obtained and the update
values are overwritten. After setting, this mode
changes automatically to Calculation (1)
84 2084 DIAG_PERIOD 180 (s) AUTO Set the data acquisition period for ILBD within the range of 20
to 65535 (s). Writable only when DIAG_MODE is Stop(0). If the
process fluctuation values are unsteady, change this value to the
longer to enhance the accuracy of the blockage detection.
85 2085 DIAG_PRI 1 AUTO Set alert (DIAG_H_ALM and DIAG_L_ALM) priority for ILBD.
Writable only when DIAG_MODE is Stop(0).
86 2086 DIAG_ERR 0x0000 — The following ILBD results are shown.
• A Blocking (bit 2)
• Large Fluctuation of Low Side (bit 3)
• Large Fluctuation of High Side (bit 4)
• Low Side Blocking (bit 5)
• High Side Blocking (bit 6)
• B Blocking (bit 7)
• Invalid Ref BlkF (bit 8)
• Invalid Ref fSPh (bit 9)
• Invalid Ref fSPl (bit 10)
• Invalid Ref fDP (bit 11)
• Outside Diagnosis Range (bit 12)
• Flg Temp Low Alarm (bit 13)
• Flg Temp High Alarm (bit 14)
Bit 15 is used to link the alarm to status of PRIMARY_VALUE,
SECONDARY_VALUE, and TERTIARY_VALUE.
87 2087 DIAG_H_ALM — Alerts for high-pressure side are indicated.
• A Blocking
• B Blocking
• Large Fluctuation of High Side
• High Side Blocking
• Invalid Reference value (BlkF, fSPh, or fDP)
• Outside Diagnosis Range
88 2088 DIAG_L_ALM — Alerts for low-pressure side blockage are indicated due to the
following factors.
• A Blocking
• B Blocking
• Large Fluctuation of Low Side
• Low Side Blocking
• Invalid Reference value (BlkF, fSPl, or fDP)
• Outside Diagnosis Range
89 2089 DIAG_OPTION 0x08FC AUTO The alarm status linked to an analog alert and LCD display is
selected by DIAG_OPTION in the SENSOR Transducer block.
The alarm selected in DIAG_OPTION is corresponding to bit of
DIAG_ERR.
BIT 15 is used to link the alarm to the status of PRIMARY_VALUE,
SECONDARY_VALUE, and TERTIARY_VALUE.
If set to 1, the signal status becomes “UNCERTAIN: Non Specific”
when the ILBD algorithm detects the abnormality.
Writable only when DIAG_MODE is Stop(0).