A2-4 – Yokogawa EJA440E User Manual
Page 94
<Appendix2. ILBD Check List>
A2-4
IM 01C25T01-06EN
Checklist (4/5)
No.
Items
Parameters
Result
Example
10-a-2 L Side Blocking
• Close the low-pressure side valve completely.
• Record the values of
fDP, fSPl, fSPh, BlkF,
and
DPAvg after the certain time,
(
Diag Period X Diag Supp Count), passed.
*: Record the value after checked that the
status is “GOOD”.
fDP*
7.48562E-09
fSPI*
7.23277E-09
fSPh*
7.14085E-09
BIkF
-0.287259
• Record the status of Checkbox in
Diag
Option.
• Check that the alarms status of “A Blocking”
and “L Side Blocking” are set.
Note: If the alarm of “ILBD over range” is generated,
the valve may be closed too much tightly. Open
valve a little and record the updated status of the
parameters.
Diag Option
A Blocking
Large Fluct L
Large Fluct H
L Side Blocking
H Side Blocking
B Blocking
Invalid Ref F
Invalid Ref SPH
Invalid Ref SPL
Invalid Ref DP
ILBD over range
• Check that the alarm of “L Side Blocking” is
generated.
• Check that the alarm of “H Side Blocking” is
not generated.
Diag Error
L Side Blocking
H Side Blocking
10-a-3 Both Side Blocking
• Close the both-pressure side valves
completely.
• Record the values of
fDP, fSPl, fSPh, BlkF,
and
DPAvg after the certain time,
(
Diag Period X Diag Supp Count), passed.
*: Record the value after checked that the
status is “GOOD”.
fDP*
7.48562E-09
fSPI*
7.23277E-09
fSPh*
7.14085E-09
BIkF
-0.287259
• Record the status of Checkbox in
Diag
Option.
• Check that the alarms status of “H Side
Blocking”, “L Side Blocking”, and “B Blocking”
are set.
Note: If the alarm of “ILBD over range” is generated,
the valve may be closed too much tightly. Open
valve a little and record the updated status of the
parameters.
Diag Option
A Blocking
Large Fluct L
Large Fluct H
L Side Blocking
H Side Blocking
B Blocking
Invalid Ref F
Invalid Ref SPH
Invalid Ref SPL
Invalid Ref DP
ILBD over range
• Check that the alarm of “B Blocking” is
generated.
Diag Error
B Blocking