Operation
Operating modes
28
© Lutz-Jesco GmbH 2017
BA-10010-02-V01
Solenoid-diaphragm dosing pump
MAGDOS LA / LD
Operating instructions
4.
Open the vent screw by one complete turn (looking onto the dosing
head, anti-clockwise).
5.
Press
Start
.
4
The dosing pump starts delivery at the highest stroke frequency.
6.
Press
Stop
, as soon as there is a continuous throughflow from the
dosing head venting facility with no air bubbles.
4
The dosing pump stops delivery.
7.
Close the vent screw.
ü
The dosing pump is vented.
i
If you are using strongly effervescent dosing media, allow
them to flow out continuously. Open the vent screw such that
about one drop per 1 – 3 strokes escapes, then close the
discharge.
11.2 Operating modes
The dosing pump offers the following operating modes:
n
Internal
- Manual setting of the delivery capacity,
n
External
- Controlling the stroke frequency and number of strokes in
dependence on the number of pulses and the pulse spacing (LD) or
the analogue signal (LA).
11.2.1 Internal operation
11.2.1.1 Selecting the operating mode
è
Press
Int
.
4
The dosing pump displays the start screen of
Intern mode
.
Fig. 25:
Ext
Start
- +
0%
Start screen of Manual operation
11.2.1.2 Starting the dosing pump
1.
Use the
+
and
-
keys to set the desired stroke frequency.
2.
Press
Start
.
ü
Dosing pump has started.
11.2.1.3 Stopping the dosing pump
è
Press
Stop
.
4
The system displays the "Stop" signal and
Stop
changes to
Start
.
ü
Dosing pump has stopped.
11.2.2 External operation
In
External
mode, the frequency and number of strokes issued by the
MAGDOS LD dosing pump is controlled in dependence on the pulse
frequency and number of pulses applied at the pulse input (see section
9.2.1.3 „Pulse input (only LD)“ on page 24).
The MAGDOS LA is controlled via an analogue signal.
11.2.2.1 Selecting the operating mode
è
Press
Ext
to select the operating mode.
4
The dosing pump shows the start display of the operating mode
External
.
Fig. 26:
Int
Start
- +
100%
Parameters of the operating mode
11.2.2.2 Setting the current value for 0% and 100% delivery
capacity (only LA)
Perform the following working steps:
1.
Press the key to navigate to the settings menu.
4
The dosing pump displays the current configuration of the
parameters.
0% = 4.00 mA
100% = 20.00 mA
6.04 mA
OK
→
- +
→
Fig. 27: Configuring the parameters
2.
Either select the limit value 0% or 100% using the
→
button.
3.
Use the
+
and
-
keys to set the desired current value for 0% / 100 %.
A value between 0.00 - 20.00 mA is permissible. The symbol
shows the current value currently set.
4.
Press OK.
4
The dosing pump displays the start screen of the operating mode
External
(analogue input).
ü
The current value for 0% and 100 % delivery capacity is set.
11.2.2.3 Setting the transmission and reduction
The transmission and reduction factors can be set in 1% intervals of 1%
to 1000%. A set value of 100% means that the dosing pump executes
one dosing stroke per incoming pulse signal. For values above 100%, the
dosing pump executes more dosing strokes per pulse signal accordingly.
For values below 100%, the dosing pump executes less than one dosing
stroke per pulse signal, meaning that several pulse signals are required
before a dosing stroke is executed.
Summary of Contents for MAGDOS LA
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