Installation / Preparation for commissioning
TR-Electronic GmbH 2012, All Rights Reserved
Printed in the Federal Republic of Germany
Page 56 of 68
TR - ECE - BA - DGB - 0091 - 02
11/15/2012
6.5.3 Operating mode Analog-Current
Over the analog interface the position of the measuring system is output as current
value and can be calculated as follows:
Curve of the output current
Pos = (I
O
* ML) / I
max
Figure 6: Output current in dependence of the measuring systems actual position
Principle schematic
Figure 7: Analog output
Legend
I
O
= measured output current [mA]
I
max
= max. output current [mA], 20 mA / 24 mA
R
L
= Load resistor [ ]
R
Line
= Line resistance [ ]
R
Total
= Total resistance [ ] = R
Line
+ R
L
= 0 up to max. 450 in case of ≤ 20 mA
or 0 up to max. 350 in case of ≤ 24 mA
ML
= by the scaling parameters programmed
measuring length [
steps
], corresponds the
position of the analog end value
Pos
= actual position of the measuring system [steps]