Siemens SINAMICS G110M - Page 122

Adapt inputs and outputs
6.2 Analog inputs
SINAMICS G110M Operating Instructions
122 Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
Table 6- 3 Parameters for the scaling characteristic and wire break monitoring
Parameter
Description
p0757
x-coordinate of 1st characteristic point [V]
p0758
y coordinate of the 1st characteristic point [% of p200x]
p200x are the parameters of the reference variables, e.g. p2000 is the reference
speed.
p0759
x-coordinate of 2nd characteristic point [V]
p0760
y-coordinate of 2nd characteristic point [% of p200x]
p0761
Wire breakage monitoring response threshold
Defining the analog input function
You define the analog input function by interconnecting a connector input of your choice with
parameter p0755 . Parameter p0755 is assigned to the particular analog input via its index,
e.g. parameter p0755[0] is assigned to analog input 0.
Table 6- 4 Connector inputs (CI) of the inverter (selection)
CI
Significance
CI
Significance
p1070
Main setpoint
p1522
Torque limit, upper
p1075
Supplementary setpoint
p2253
Technology controller setpoint 1
p1503
Torque setpoint
p2264
Technology controller actual value
p1511
Supplementary torque 1
A complete list of the connector inputs is provided in the List Manual.
Defining the analog input function - example
In order to use the analog input AI
0 as the source for
the supplementary setpoint, you h
ave to set
p1075 = 755[0].
Advanced settings
Signal smoothing
When required, you can smooth the signal, which you read-in via an analog input, using
parameter p0753.
For more information, see the parameter list and in the function block diagrams 9566 ff of the
List Manual.
Specify deadband
Small signals of a few millivolts are often corrupted by interference in the cable. To be able
to enter a setpoint of exactly 0 V via an analog input, you must specify a deadband.