Grundfos DME 2 Product Manual page 21

Functions
Cable 3: Stop dosing input and dosing monitor or dosing output
Number/color
Function
Stop input
Stop input
Dosing monitor
Dosing monitor
Dosing output
(pump running)
Open collector (NPN) can be used for a relay or a lamp.
Useful when the load (e.g. a relay) has one side
connected to a power supply which is not the same one
as connected to the sensor.
When the dosing output is activated, the output
provides the Gnd to the load.
Recommended supply: max. 24 VDC.
Max. current: 100 mA.
Cable 4: Level input
Number/color
Function
Empty tank input potential-free*
Empty tank input
Low level input
Low level input
The function for the potential-free contact sets can be chosen from the display (NO = Normally Open and NC = Normally Closed).
1/brown 2/white
5 V
potential-free
Open collector
(NPN)
1/brown 2/white
5 V
potential-free*
5 V
3/blue 4/black
Gnd
potential-free
potential-free
Gnd
Gnd
3/blue
potential-free*
potential-free*
DME and DMS
5/grey
potential-free
5 V
4/black
Gnd
Gnd
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