Operation
Operating modes
44
Solenoid-Diaphragm Dosing Pump
MAGDOS LP
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10231-02-V03
You can configure parameters
strokes / pulse
and
pulses /
stroke
at the same time to define an exact number of strokes for a
number of pulses. in this connection, the system determines the stroke
frequency on a dynamic basis based on the time between the last two
pulses.
Example:
If you set "7 strokes / pulse“ and „3 pulses / stroke“, the dosing pump
carries out 7 strokes per 3 input pulses.
Output
The
Output
pulse input mode offers the following configuration
options:
Water meter
The
Water meter
pulse input mode offers the following configuration
options:
On the basis of the water meter's values (
ml/pulse
,
l/pulse
or
m3/pulse
) and the delivered dosing capacity (output) , the dosing
pump automatically determines the stroke frequency. If the dosing
pump's maximum output is exceeded during a fast sequence of pulses,
the system issues a warning message.
11.2.3.4 Configuring the pulse input mode
1.
Press
Setup
.
The dosing pump displays the current configuration of this oper-
ating mode's parameters (Menu 3.31).
2.
Press
Setup
.
3.
Use the
or
key to choose a parameter of the mode and press
OK
.
4.
Press the
+
key to increment the parameter's value or the
-
key to
decrement it.
5.
Press
OK
.
The dosing pump displays the current configuration of this oper-
ating mode's parameters (Menu 3.31).
Stroke buffer
The strokes that have still to be executed are
saved in the stroke buffer. If stroke multiplication
is set, the system writes all the strokes
belonging to one pulse into the stroke buffer.
With each pulse, the number of strokes in the
accumulator increases; with each executed
stroke, it decreases. The limit of the stroke
buffer must be raised to save pulse requests that
arrive during execution of the strokes from the
previous pulse request. If the number of
requested strokes exceeds the stroke buffer
capacity, the system issues a "Stroke buffer
maximum" message.
Default setting: 1 stroke
Adjustment range: 1 - 999 strokes.
In the case of pulse multiplication, you must increment the
stroke buffer manually. Otherwise, you can confirm the
configuration by pressing
OK
.
Parameter
Explanation
Output
Specifies the required output per pulse in ml.
The output is calculated from the dosing pump's
stroke volume after calibration and the automati-
cally calculated ratio of the number of strokes to
the number of pulses.
The value that is displayed in brackets indicates
the number of strokes and pulses (number of
strokes/number of pulses).
Stroke buffer
See "Stroke buffer" mode under “Strokes” on
page 43.
Table 11-3: Output configuration mode
The delivery capacity depends on the dosing pump's delivery
pressure. To display the delivery capacity correctly, you must
calibrate the dosing pump, see page 41.
Parameter
Explanation
Table 11-2: Strokes configuration Mode
i
i
Parameter
Explanation
Output
Specifies the delivered output of the dosing
pump per cubic metre (m
3
) throughflow of the
water meter in ml. The value corresponds to
the throughflow amount per pulse.
Since the dosing pump only controls the output
via the stroke frequency, you must set the
cycle between the water meter pulse and the
dosing pump's stroke.
The value that is displayed in brackets indi-
cates the number of strokes that must be trig-
gered per number of water meter pulses.
(Number of strokes/number of pulses).
Stroke buffer
See "Stroke buffer" mode under “Strokes” on
page 43.
ml/pulse
Specifies the water meter's throughflow
amount per pulse in ml.
l/Imp.
Specifies the water meter's throughflow
amount per pulse in l.
m3/pulse
Specifies the water meter's throughflow
amount per pulse in m
3
.
Maximum
Specifies the water meter's maximum through-
flow amount in m
3
/hr.
Table 11-4: Water meter configuration mode
If you enter contradictory parameters, the system displays
this when you try to save them (Menu 3.41). It is not possible
to activate the operating mode without correcting the param-
eters.
i
