E-022-4-E
23
Fig.40
Fig.4
④
Status output is an open collector output available from three functions- "Error Status"
,
"Bi direction"
and "H/L Alarm"
.
・
"Error Status" : Turns the status output "OFF" when the item selected at "Error select" is in error.
・
"Bi direction" : Accepts the flow (mass and volume) in the bidirectional mode (output increases with
increased flowrate, regardless of the flow direction) and turns the status output "OFF" on reverse
flows. Incidentally, the flow direction arrow indicated on the flowmeter is taken as "Forward" direction
when the "Flow direction" is "Forward"
,
whereas the flow direction opposite to the arrow indicated on
the flowmeter is taken as "Forward" when it is "Reverse"
.
・
"H/L Alarm" : Turns the status output "OFF" when the menu item set up at "H/L alarm vars" reaches
the point preset at "High alarm point" or "Low alarm point"
.
Default setting is "Error status."
To cancel the status output function, select "No Function"
.
If "No Function" is your option, the status output remains "OFF"
.
By the way, status output logic is selectable in "Status output mode"
.
Default is "OFF"
,
that is to say "OFF active" is selected.
⑤
If you want to use the status output for "H/L Alarm"
,
click on the arrow mark at right of "H/L alarm vars"
and select from the drawdown list the item for setting the H/L alarm as shown in Fig. 40.
You can choose from five "H/L alarm vars" items- "Mass Flow"
,
"Density"
,
"Vol Flow"
,
"Temp" and "Diff-
Total"
.
The ST9801 is not provided with menu item "Vol Flow" for selection.
The EV9201 has neither "Vol Flow" nor "Density" menu item.
⑥
After filling in all the fields required, click in "OK" button. A message box as shown in Fig. 41 then
appears.
Clicking on "OK" at this window changes the previous settings to the new settings just entered.
However, the flowmeter output also changes with the changes in settings made. For safety's sake,
therefore, in applications where the flowmeter output controls a valve or other devices, it is necessary
that the control loop be switched to manual control to ensure that the control loop is unaffected by the
flowmeter output.
Summary of Contents for EL 2310-05E Series
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