Electrical Connection - Rechner Sensors EasyTeach KXA-5-1-ET Manual De Instrucciones

Electrical Connection

Connect the evaluation unit with the control panel (see connection diagram). Then connect the sensor
and the function earth BE with the evaluation unit.
Connection
function earth (BE)
The potential BE must be connected to the container potential! This connection should be made over
the shortest distance and routed with straight wire. (Shortening or lengthening of the cable is possible,
using a single-lead cable 0,25...1,5 mm
Mounted in system with a galvanic con-
nection to the potential of the protective
wire (e.g. metal container or holder)
The BE-connection is made between
Sensor with
the sensor and the system.
metal housing
The BE connection must be made with the sensor or the evaluation unit.
Sensor with
• For the sensor use the M3-screw
plastic housing
• For the evaluation unit use the soldering lug.
Please take note that the use of a DC / DC-transducer calls briefly for a higher current than the operat-
ing current when initially switching on the equipment. Therefore the power supply must have enough
low-impedance!
Attention:
For inductive loads, a corresponding protective circuit (e.g. freewheeling diode) must be provided.
Installation of cables
Wiring of the sensor should be routed separately or screened from heavy conductor lines, as in ex-
treme cases inductive peak voltages can destroy the sensors despite the integrated protective circuit.
Screened cable or twisted lines are recommended, especially for longer cable runs > 5 m. Direct control
of electric light bulbs is to be avoided, because during the switch-on moment cold current is many times
the rated current and can destroy the output stage of the sensor.
Units with strong fields nearby, e. g. high power walkie-talkies, or noise sources in the lower fre-
quency range, e. g. long, middle or shortwave transmitters should not be operated close to the sensors
or additional measures have to be taken in order to eliminate incorrect operation.
18
Connection
KXS-Sensor
)
2
Mounted in system without a galvanic
connection to the potential of the protec-
tive wire (e.g. metal container or holder)
The BE connection must be made with
the evaluation unit. Use the soldering
lug
+ Teach mode
- Operating mode