Yokogawa EJX115A User Manual

Page 67

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<4. Diagnostics>

4-20

IM 01C25T01-06EN

# Parameter name Default value

Explanation

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 4.3

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 4.5.

50 Status group 9

Refer to Table 4.5.

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

NRatio 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.

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