Siemens SINAMICS G120C Operating Instructions Manual page 141

Characteristics
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
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.
Precondition
You have set analog input 0 as a current input ("I") via the DIP switch on the
Control Unit.
SINAMICS G120C converter
Operating Instructions, 07/2015, FW V4.7 SP3, A5E34263257B AC
Examples for scaling characteristics
Description
x coordinate of the 1st Characteristic point [V or mA]
y coordinate of the 1st Characteristic point [% of p200x]
p200x are the parameters of reference variables, e.g. p2000 is the reference speed
x coordinate of the 2nd Characteristic point [V or mA]
y coordinate of the 2nd Characteristic point [% of p200x]
Wire breakage monitoring response threshold
Advanced commissioning
6.2 Inverter control
137