Parameter; Parameters With Follow-On Parameterization - Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual

Introduction
1.4 Adapting the inverter in line with the application
1.4.2

Parameter

There are two types of parameters, adjustable and display parameters.
Adjustable parameters
Adjustable parameters are preceded with the letter "P". You can change the value of these
parameters within a defined range.
Example:
P0305 is the parameter for the rated motor current in Amps. This parameter is set during
commissioning. You can enter values between 0.01 and 10000.
Change protection for setting parameters
The process of changing parameter values is subject to certain conditions. If an attempt to
change a parameter is rejected by the inverter, this can have a number of causes:
1. The inverter operating state does not allow you to change parameters.
2. In some cases, you may not be able to change certain parameters due to automatic
For each parameter, the List Manual specifies whether and which conditions apply for
changing the values.
Display parameters
Display parameters are preceded with the letter "r". You cannot change the value of these
parameters.
Example:
r0027 is the parameter for the inverter output current. The inverter measures the current and
writes the current value to the parameter. You can display the parameter value, e.g. using an
analog output of the inverter.
1.4.3

Parameters with follow-on parameterization

When you change certain parameters, the system may automatically change other
parameters accordingly. This makes it much easier to parameterize complex functions.
Example: Parameter P0700 (command source)
Parameter P0700 can be used to switch the command source from the fieldbus to digital
inputs. When the value of P0700 is changed from 6 (command source "fieldbus") to 2
(command source "digital inputs"), other parameter values are changed automatically:
16
For example, certain parameters can only be changed when the inverter is in
commissioning mode.
follow-on parameterization.
Example: Use P0922 to define the PROFIdrive telegram that the inverter uses to
communicate with the higher-level control. As follow-on parameterization, P0840 (source
of the ON/OFF1 command), for example, is assigned a permanent protected value
depending on the value of P0922.
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA