Technical Specifications
Item no. 10405047-03, Revision 03
24 ( 48 )
6.6.2
Signals
There are two different output signals available.
Example of design: Switch
Description
Value
1
Sensor
2
Position controller or
analog input card of PLC
A
Current signal
4-20 mA
Setting upon delivery
B
Voltage signal
2 – 10 V
There is a switch in the housing for setting the desired output signal. The
wiring does not need to be changed.
Current signal
We recommend a current signal for the following reasons:
q
Compared to a voltage signal, the current signal is less sensitive to any
electromagnetism.
Ä
For example, linear drives, motor, power cable, HF technology, etc.
q
The analog current signal can be transmitted over long distances.
Ä
Cable length: max. 50 m
q
The Ott-Jakob position controller can only evaluate the current signal.
Voltage signal
The voltage signal is dependent on the total resistance.
Ü
Take the following factors into account:
Ä
Line resistance
Ä
Internal resistance of the measuring device
Ä
Internal resistance of the controller.
These factors may distort the specified setting values, and this may cause the
system to fail.
6.6.3
Installation
Before applying the operating voltage:
Ü
Select the desired output signal.
Ü
Switch on sensor electronics 30 minutes before the start of scaling or oper-
ation.
