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MNDP02 · MULTIFUNCTION LIQUID LEVEL CONTROL

MNDP02 multifunction level relay: 7 modes in one unit, with alarm, alternation of 2 pumps and star-delta starting. 2 x SPDT 8A.

Product type:	Multifunction conductive probe level relay
Installation:	DIN rail, plug-in terminals
Function:	Well, tank or well and tank, with alarm, alternation or star-delta
Probes:	2 sets of 3 (Level 1 and Level 2)

Features

✓7 working modes selected with a side potentiometer
✓Alarm from a second level of probes
✓Alternation of 2 pumps with 2nd pump back-up
✓Star-delta starting of the pump with the two outputs
✓Well and tank at the same time: fills the tank only if there is water in the well
✓Anti-wave delay adjustable from 1 to 80 s and sensitivity adjustable up to 50 kΩ
✓Operation and probe status LEDs

Supply

230 / 400 VAC

Outputs

2 x SPDT 8A

Modes

7 working modes

Anti-wave

1 – 80 s

1With the unit de-energised, the working mode (A to G) is selected with the side potentiometer.
2The Level 1 probes keep the liquid between their maximum and minimum.
3Depending on the mode, the Level 2 probes give the alarm or start the 2nd pump; in mode G they monitor the well.
4The anti-wave delay (1 to 80 s) prevents operations caused by liquid movement.

How is the working mode changed?

With the side potentiometer. The mode must be changed with the unit disconnected from the mains.

Which probes does it need?

Two sets of 3 conductive probes: one for Level 1 and one for Level 2 (in mode G, tank and well). For example, the SNP003.

Can it alternate two pumps?

Yes. In modes B (well) and E (tank) it alternates 2 pumps and Level 2 starts the second pump when needed.

Reference	MNDP02 (230 / 400 VAC)
Former reference	YNDP02
Series	M · modular DIN rail
Product type	Multifunction conductive probe level relay
Working modes	7, selected with a side potentiometer

Supply	230 / 400 VAC · 50/60 Hz
Outputs	2 x SPDT 8A 250 VAC

Probes	2 sets: maximum, minimum and common for Level 1 and Level 2
Sensitivity	Adjustable up to 50 kΩ
Anti-wave delay	Adjustable from 1 to 80 s

LEDs	Operation and probe status

Operating temperature	−10 to +55 °C
Storage temperature	−25 to +85 °C

Compliance

CE · 2014/35/EU · 2014/30/EU

Mode	Application	Operation
A	Well with alarm	Level 2 gives the alarm (output 1)
B	Well with alternation of 2 pumps	Level 2 starts the 2nd pump
C	Well with star-delta starting	The outputs start the pump in star-delta sequence
D	Tank with alarm	Level 2 gives the alarm (output 1)
E	Tank with alternation of 2 pumps	Level 2 starts the 2nd pump
F	Tank with star-delta starting	The outputs start the pump in star-delta sequence
G	Well and tank	Fills the tank only if there is water in the well