KROHNE UFM 500 EN - Manual (Page 31)

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Fct. 3.3.9 Cutoff “off” value for SMU-I
(appears only if “YES” set in fct. 3.3.7).
Range: 02 to 20 PERCENT of Q
100%
.
This value must be greater than that of fct. 3.3.8,
otherwise a “parameter check” error (fct. 4.5.0) will
occur, see sect. 4.2 + 4.3. When the flow returns to the
cutoff “off” value, the current output returns to normal.
Fct. 3.4.6 Low-flow cutoff (SMU) for F desired?
Set NO or YES.
Fct. 3.4.7 Cutoff “on” value for SMU-F
(appears only if “YES” is set in fct. 3.4.6).
Range: 01 to 20 PERCENT of Q
100%
.
The low-flow cutoff drives the frequency output to 0 Hz
when the flow decreases to the cutoff “on” value.
Fct. 3.4.8 Cutoff “off” value for SMU-F
(appears only if “YES” is set in fct. 3.4.6).
Range: 02 to 20 PERCENT of Q
100%
.
T h is valu e m u st be greater th an th at of fct. 3 .4 .7 , oth erw ise a
“ param eter ch eck” error (fct. 4 .6 .0 ) w ill occu r, see sect. 4 .2 +
4 .3 . W h en th e flow retu rn s to th e cu toff “ off” valu e, th e
freq u en cy ou tpu t retu rn s to n orm al.
5.11 F/R operation for I or F
Electrical connection, characteristic and setting of
outputs, refer to sect. 2.3, 5.7 + 5.8.
Fct. 3.1.7 Define direction of forward (normal) flow
(+ or -).
In the case of F/R operation, set the direction of the
forward flow with “+” or “-”, in accordance with the
arrows marked “+” and “-” on the primary head. Note
that if the flowmeter does not have a “+” and “-” on the
primary head the “+” direction is the direction in which
the arrow is pointing. When the low-flow cutoff is active,
it will also operate with the F/R operation.
Fct. 3.1.1 Full-scale setting for flowrate Q
100%
Set the full-scale range. Unit and range, see sect. 5.1 +
5.3.
Fct. 3.1.2 Separate range desired for reverse flow?
Set “YES” only if the range required for reverse flow is
different from the normal (forward) flow. If not, set
“NO”.
Fct. 3.1.3 Full-scale range for reverse flow
(appears only if “YES” is set in fct. 3.1.2).
This is used for setting the full-scale range for reversed
flow. Unit and range, see sect. 5.1 + 5.3. This value must
not be greater than that of fct. 3.1.1, otherwise
“parameter check” error (fct. 4.2.0) will occur, see sect.
4.2 + 4.3.
5.12 Language of display texts
A choice of languages for other display texts is offered in
fct. 3.6.1. The software is equipped with the languages:
GB/USA English and
D German or
F French.
Other languages can be delivered on request.
5.13 Coding desired for entry into setting level?
•
Set NO or YES in fct. 3.6.2.
•
If NO is set, only press the
→
key to get into the
setting mode.
•
If YES is set, press the
→
key and then a 9-keystroke
combination to enter the setting mode.
•
Factory-set Entry Code 1:
→ → → ↵ ↵ ↵ ↑ ↑ ↑
•
To change the Entry Code 1:
Select fct. 3.6.2 ENTRY.CODE 1: set YES.
Select fct. 3.6.3 CODE 1 (appears only if YES is set
in fct. 3.6.2). Press the
→
key, displayed:
Code 1 _ _ _ _ _ _ _
Press any 9-keystroke combination. Every keystroke
acknowledged by “*”. Then set the same keystroke
combination again. WRONG CODE (= incorrect
entry) appears if 1
st and 2 nd entries are not equal.
Press the
↵
and the
→
keys and repeat settings.
5.14 Behavior of outputs during setting
•
Behaviour of outputs during setting Set in fct. 3.6.5
whether or not the outputs shall hold the last values
(before entry into the setting mode).
•
If “YES” is set: output values prior to entry into the
setting mode are retained during setting. After
leaving the setting mode, the outputs go to the values
corresponding to the actual operating conditions.
•
If “NO” is set: the outputs go to the set minimum
values:
I to 0/4 mA (see fct. 3.3.2)
or to the value of I
0%
(see fct. 3.3.3).
F or to 0 V, consequently no pulses.
5.15 User-defined unit
An arbitrary volumetric flow unit or, if density of the
fluid product is consistent and known, a unit of mass
(weight) can be set in fct. 3.6.6 to 3.6.8. The unit “ h
Liter/hr” (hecto-liters per hour) is factory-set unless
another special unit is specified. US-version: “US
Mgal/DAY” (US million gallons per day).
Fct. 3.5.6 Text for user-defined unit
•
Volumetric (or mass) unit per unit of time.
•
Text for volume (mass): 6 characters (places).
•
Text for time: 3 characters (places).
•
The fraction bar “/” in the 7 th place has a fixed
position.
•
Alpha characters A-Z and a-z, numbers 0-9, symbols
+, - or blank character (= underscore) are selectable
for every place.
•
Pressing the
↑
key will sequence the alpha characters
and numbers in the order given above.
•
The
→
key shifts the cursor 1 place to the right.
•
Text examples are given in the following tables in
brackets (...../..).