Control
26
© Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump
MEMDOS KMS LB/LA
Operating instructions
10.4 Operating panel MEMDOS KMS LA
Fig. 13: Operating panel
10.5 General
n
The pump must be restarted once the operating mode has been
changed and the cable break function or the level input has been acti-
vated.
n
The pump will not restart automatically after a error has been reme-
died and acknowledged. It must be restarted.
n
If the pump was disconnected from the voltage supply in running op-
eration, it restarts automatically once the voltage is returned.
n
The Alarm LED is illuminated permanently if an error is registered. The
LED begins to flash once the error has been remedied and must be
cleared with
Reset
.
n
The stroke sensor LED flashes whilst the pump is running. The LED il-
luminates once per stroke.
n
The yellow LEDs Man/Auto, (0)4-20mA and Level only illuminated
when switched.
n
The pump implements the setting range 30 – 100 % in an infinity ad-
justable fashion via the potentiometer or an external mA signal. In the
range 0 – 30 % the pump enters Start/Stop operation to achieve the
desired delivery capacity.
10.6 Operating modes
The pump has two operating modes.
n
Manual operation
n
Automatic operation
10.6.1 Manual operation
The pump is in manual operation as standard. The delivery capacity of the
pump can be set between 0 % and 100 % using the potentiometer. The
pump can be started or stopped by pressing the
Start
or
Stop
key.
Precondition for action:
ü
The pump assembly and installation have been completed success-
fully.
Perform the following working steps:
1.
Set the desired delivery capacity manually using the potentiometer.
2.
Press
Start
.
4
The On LED is lit.
ü
The pump now runs in manual operation.
10.6.2 Automatic operation
Pressing the
Man/Auto
key activates automatic operation. This enables
the pump to be controlled via an external controller using an analogue
signal between 0 – 20 mA.
Precondition for action:
ü
The pump assembly and installation have been completed success-
fully.
Perform the following working steps:
1.
Press
Man/Auto
to change to automatic operation.
4
The Man/Auto LED illuminates. The pump can now be controlled by
an external controller.
2.
Press
0(4)-20mA
to activate the cable break function in addition to
automatic control.
4
The analogue signal to the external control must be between
4 – 20 mA. If the signal falls under 2 mA, the pump stops, the alarm
relay is switched and the alarm LED and the cable break LED will
illuminate.
3.
Press
Start
.
4
The On LED is lit.
ü
The pump is now running in automatic operation and is
controlled externally.
i
The
0(4)-20mA
key will only function after automatic opera-
tion has been activated (analogue signal) and deactivates au-
tomatically after a change to manual operation.
Pump stop
Pump start
LED: Operating mode
Operating mode
Analogue input 0 - 20 mA
LED: Pump ON
Error acknowledgement
LED: Alarm
LED: Level
Level input
LED: Stroke sensor
LED: Cable break
Cable break function
Changeover 0-20 to 4-20 mA
Potentiometer
