Siemens SINAMICS G120 Operating Instructions Manual page 206

Advanced commissioning
6.3 Adapt the default setting of the terminal strip
Defining the function of an analog input - example
Advanced settings
Signal smoothing
When required, you can smooth the signal, which you read-in via an analog input, using
parameter p0753.
You can find more information in the parameter list and in function diagram 2251 of the List
Manual.
Dead band
With the control enabled, electromagnetic interference on the signal cable can cause the motor
to slowly rotate in one direction in spite of a speed setpoint = 0.
p0764[0]
p0764[1]
Using an analog input as digital input
An analog input can also be used as digital input.
206
Overview of the manuals (Page 537)
Analog inputs dead zone, AI 0 (factory setting: 0)
Analog inputs dead zone, AI 1 (factory setting: 0)
Digital inputs (Page 199)
In order to enter the supplementary setpoint via analog input
AI 0, you must interconnect AI 0 with the signal source for the
supplementary setpoint.
Set p1075 = 755[0].
The dead band acts on the zero crossover of
the analog input characteristic. Internally, the
inverter sets its speed setpoint = 0, even if
the signal at the analog input terminals is
slightly positive or negative. This prevents
the inverter from rotating the motor at a
speed setpoint = 0.
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE
Converter with the CU230P-2 Control Units