Switchover Between Different Settings; Changing Over The Command Data Sets (Manual, Automatic) - Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual

Functions

7.11 Switchover between different settings

7.11 Switchover between different settings
7.11.1

Changing over the command data sets (manual, automatic)

Switching over master control
In some applications, the inverter is operated from different locations.
Example: Switchover from the automatic mode into the manual mode
A central control can switch a motor on/off or change its speed either via a fieldbus or via
local switches. A key-operated switch close to the motor can be used to switch the master
control of the inverter from "control via fieldbus" to "local control".
Command data set (CDS)
The inverter offers options to parameterize the settings for the command sources, setpoint
sources and status messages (with the exception of analog outputs) in up to four different
ways. The associated parameters are indexed (index 0, 1, 2 or 3). When the inverter is
operational, control commands select one of the four indices and therefore one of the four
settings that has been saved. This means that as described in the example above, the
master control of the inverter can be switched over.
All of the switchable parameters for command sources, setpoint sources and status
messages with the same index are known as a "command data set".
230
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA