Siemens SINAMICS G120 Operating Instructions Manual page 104

Adapt terminal strip
6.4 Analog inputs
Characteristics of the analog input
If you change the analog input type using p0756, then the inverter automatically selects the
appropriate scaling of the analog input. The linear scaling characteristic is defined using two
points (p0757, p0758) and (p0759, p0760). Parameters p0757 ... p0760 are assigned to an
analog input via their index, e.g. parameters p0757[0] ... p0760[0] belong to analog input 0.
Figure 6-3
Parameter
p0757
p0758
p0759
p0760
p0761
Adapting the characteristic of the analog input
You must define your own characteristic if none of the default types match your particular
application.
Example
The inverter should convert a 6 mA ... 12 mA signal into the value range -100 % ... 100 %
via analog input 0. The wire break monitoring of the inverter should respond when 6 mA is
fallen below.
104
Examples for scaling characteristics
Description
x-coordinate of 1st characteristic point [V or mA]
y coordinate of the 1st characteristic point [% of p200x]
p200x are the parameters of the reference variables, e.g. p2000 is the reference
speed
x-coordinate of 2nd characteristic point [V or mA]
y-coordinate of 2nd characteristic point [% of p200x]
Wire breakage monitoring response threshold
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB