Yokogawa EJX440A - Manual (Page 56)

<4. Diagnostics>
4-16
IM 01C25T01-01E
# Parameter name Default value Expanation
27 Ref fDP Status Status of fDP obtained under normal condition.
28 Ref fSPl Value of fSPl obtained under normal condition.
29 Ref fSPl Status Status of fSPl obtained under normal condition.
30 Ref fSPh Value of fSPh obtained under normal condition.
31 Ref fSPh Status Status of fSPh obtained under normal condition.
32 Ref BlkF Value of BlkF obtained under normal condition.
33 Ref BlkF Status Status of BlkF obtained under normal condition.
34 Ref DPAvg Value of DPAvg obtained under normal condition.
35 Ref DPAvg
Status
Status of DPAvg obtained under normal condition.
36 Lim fDPmax Refer to
Table 4.2.3
Upper limit for Ratio fDP to detect the blockage.
Writable only when Diag Mode is "Stop".
37 Lim fDPmin Lower limit for Ratio fDP to detect the blockage.
Writable only when Diag Mode is "Stop".
38 Lim fSPlmax Upper limit for Ratio fSPl to detect the blockage.
Writable only when Diag Mode is "Stop".
39 Lim fSPlmin Lower limit for Ratio fSPl to detect the blockage.
Writable only when Diag Mode is "Stop".
40 Lim fSPhmax Upper limit for Ratio fSPh to detect the blockage.
Writable only when Diag Mode is "Stop".
41 Lim fSPhmin Lower limit for Ratio fSPh to detect the blockage.
Writable only when Diag Mode is "Stop".
42 Lim BlkFmax Upper limit for BlkF to detect the blockage.
Writable only when Diag Mode is "Stop".
43 Lim BlkFmin Lower limit for BlkF to detect the blockage.
Writable only when Diag Mode is "Stop".
44 Lim DPAvgmax Upper limit for DPAvg. Writable only when Diag Mode is "Stop".
45 Lim DPAvgmin Lower limit for DPAvg. Writable only when Diag Mode is "Stop".
46 Ref Lim fDPmin 7.0E-10 Lower limit to judge whether Ref fDP is available for ILBD operation.
Writable only when Diag Mode is "Stop".
47 Ref Lim fSPmin 1.0E-10 Lower limit to judge whether Ref fSPl and Ref fSPh are available for ILBD
operation.
Writable only when Diag Mode is "Stop".
48 Ref Lim BlkFmax 0.5 Upper limit to judge whether Ref BlkF is available for ILBD operation.
Writable only when Diag Mode is "Stop".
49 Status group 8 Refer to Table 4.3.1.
50 Status group 9 Refer to Table 4.3.1.
51 CRatio fDP Ratio fDP is compensated by following formula and used as treatable monitoring
value when the flow change is too large or small.
Sqrt ( fDP / Ref fDP) X | Ref DPAvg / DPAvg |
When compensation is selected in Diag DP Comp, CRatio fDP is used as
monitoring value.
52 CRatio fDP
Status
Status of CRatio fDP
53 NRatio fDP When Non-compensation is selected in Diag DP Comp, NRatio fDP is used as
monitoring value. NRatio fDP = Sqrt (fDP / Ref fDP)
54 NRatio fDP
Status
Status of Ratio fDP
55 Diag DPComp 0:
Compensation
Whether fDP is referred by CRatio fDP or NRatio fDP is selected.
56 Diag Applicable After the reference value is obtained, the applicable blockage detection is
displayed on this parameter.