ProMinent
®
Page 17
Settings
• 4 - 20 mA: at 4 mA the gamma/ L does not operate
at 20 mA the gamma/ L operates at 180 strokes/min.
Between these two extremes the stroke rate is proportional to the electrical
signal.
For signals of below 3.8 mA a fault will be detected and the gamma/ L will stop
(e.g. cable break).
• Curve: In the “curve” processing mode you can programme the gamma/ L ratios.
There are 3 options available:
•
= straight line
• = lower band
•
= upper band
P
P
P
P P
P
P P
P
Continuous
display
glana
Set
evruc
Set
Analog
nore
Set
Analog
Set
Analog
04o1i
Analog
mA
Set
0212f
Analog
Freq.
Set
06o1f
Analog
Freq.
Set
0612i
Analog
mA
Set
tes
Straight line:
The following symbol appears in the LCD display:
.
You can enter any stroke frequency ratio for the gamma/ L in proportion to the electrical
signal. You must enter two points P1 (I1, F1) and P2 (I2, F2). F1 is the stroke rate at which
the pump should operate at current I1: the straight line and the ratio are fixed accordingly:
I [mA]
I 1
I 2
F1
F2
F
max
020
P1
P2
Fig. 20
GUIDELINE
Draw a diagram like the one above - with values for (I1, F1) and (I2, F2) - in order to
set the gamma/ L to your required stroke rate !
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