Electrical installation
Description of connection sockets
32
© Lutz-Jesco GmbH 2014
BA-10103-02-V01
Stepper Motor-driven Diaphragm Dosing Pump
MEMDOS SMART LK
Operating instructions
9.2.3 Connection socket 3
9.2.3.1 Level input
Connection for level monitoring of a dosing tank (e.g. a suction line with a
fl oat switch).
5 V DC supply voltage (current across all connections limited to a total
maximum of 50 mA)
Alert and main alarm
Potential-free contact
Programmable NC or NO contact
For more details on installing the level monitoring system, see page 27.
For information on setting the
Level input
function, see page 36.
Pin
M12x1
(A-coded)
Assignments
Connection
Cable colour*
1
pre-alarm
3
2
1
Brown
BN
2
Main alarm
White
WH
3
Ground (GND)
Blue
BU
4
-
+ 5 V DC
-
Black
BK
Tab. 24: Connection socket 3
* Applies to cable colours of cables from Lutz-Jesco GmbH. No liability is
accepted for cables from other manufacturers.
9.2.4 Connection socket 4
9.2.4.1 Alarm relay output
Using the alarm relay, it is possible to forward outwards disturbances on
the dosing pump.
Voltage-free changeover contact
Max. 250 V AC, 2.5 A or max. 30 V DC, 2.5 A,
For information on setting the
Alarm relay
, see page 35.
Pin
M12x1
(B-coded)
Assignments
Connection
Cable colour*
1
Break (NC)
contact
1
2
4
Brown
BN
2
Make (NO)
contact
White
WH
3
-
Blue
BU
4
Changeover
contact
Black
BK
Tab. 25: Connection socket 4
* Applies to cable colours of cables from Lutz-Jesco GmbH. No liability is
accepted for cables from other manufacturers.
