Inputs and outputs

Level measurement

Level sensor

all

1

1

1

Float switch

all

2

3

3

Electrode

From HW 2

2

3

−

Dynamic pressure bell

all

1

1

1

High water level

Float switch

all

1

1

1

Electrode

From HW 2

1

1

−

Dry run/low water level

Float switch

all

1

1

1

Electrode

From HW 2

1

1

−

Pump monitoring

Thermal winding monitor (bimetal)

all

1

2

3

Thermal winding monitor (PTC)

all

−

−

−

(Electrode) leakage detection

all

1

2

3

Other inputs

Extern OFF: for remote switch off of all pumps
In “fill” operating mode, dry-running protection is realised via this input.

all

1

1

1

Potential-free contacts

Collective fault signal (changeover contact)

all

1

1

1

Collective run signal (changeover contact)

all

1

1

1

Individual fault signal (closed contact (NC))

all

1

2

3

Individual run signal (open contact (NO))

all

1

2

3

Other outputs

Service output (connection value: 24 V=, max. 4 VA)
E.g. output for connecting an external alarm signal (lamp or horn)

all

1

1

1

Display of the current level value (0 ... 10 V=)

all

1

1

1