9
UK
6 Electrical connection
The unit must only be connected by an electrician�
The national and international regulations for the installation of electrical
equipment must be observed�
Voltage supply to EN50178, SELV, PELV�
Disconnect power before connecting the unit�
Wiring:
p-switching (LK7xxx)
n-switching (LK0xxx)
L
L+
3
4
2
1
BU
BK
WH
BN
4: OUT1
2: OUT2
L
L+
3
4
2
1
BU
BK
WH
BN
4: OUT1
2: OUT2
Core colours of ifm sockets:
1 = BN (brown), 2 = WH (white), 3 = BU (blue), 4 = BK (black)�
Programming of complementary outputs:
output 1: = Hno, output 2: = Hnc,
SP1 = SP2 / rP1 = rP2�
For safe function the sensor housing must be electrically connected to the
vessel wall�
To do so, use the housing connection with the blue cable lug (see scale
drawing) and a cable piece with a wire cross-section of min� 1�5 mm² that
is as short as possible�
When using metal tanks the electrical ground of the tank serves as the
machine earth� When using plastic tanks an electrode has to be installed
that is connected to the machine earth (e�g� sheet metal in the tank in
parallel with the probe; min� distance to the probe: 40 mm�
EMC / CE guidelines
The level sensor conforms to the standard EN 50081-2 and it is a class A product�
The unit may cause radio interference in domestic areas� Therefore the user may
have to take appropriate measures, if necessary�
