Mounting Accessories; Electrical Connection - IFM Electronic LK7 Bedienungsanleitung

Installation

Mounting accessories

Electrical connection

EMC / CE guidelines
Page 20
For safe and easy mounting use the ifm mounting accessories (Order
no. E43000 - E43006).
NOTE: Maximum vessel pressure when mounted with mounting
accessories: 0.5 bar.
An overpressure of 3 bar is possible for a short time (max. 1 min.).
The unit must only be connected by an electrician.
The national and international regulations for the installation of elec-
trical equipment must be observed.
Voltage supply to EN50178, SELV, PELV.
Disconnect power before connecting the unit.:
Wiring:
p-switching (LK7xxx)
1
2
4
4: OUT1
3
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.
To meet the CE guidelines according to the EMC Act the sensor hous-
ing must be electrically connected to ground,
- either mechanically by means of a bracket which is electrically
connected to ground
- or by means of the earthing ring supplied.
The sensor uses the ground or the tank potential as a reference. This
means that a measured current must flow from the sensor probe back
to the sensor through the medium to be detected. If the sensor hous-
ing is not grounded, the measured current can flow back to ground via
electrical cables in an undefined way. This may influence other mea-
suring components.
The level sensor conforms to the standard EN 50081-2.
It must not be used in domestic areas, commercial premises and
small businesses.
BN
L +
WH
BK
4: OUT1
BU
2: OUT2
L
n-switching (LK0xxx)
1
BN
L +
2
WH
4
BK
3
BU
L