Functions
7.1 Overview of the inverter functions
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
184
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
Functions relevant to all applications
Functions required in special applications only
The functions that you require in your application are shown
in a dark color in the function overview above.
In the quick commissioning, the parameters of these
functions are assigned an appropriate basic setting, so that
in many cases the motor can be operated without having to
assign any other parameters.
The functions whose parameters you only need to adapt
when actually required are shown in white in the function
overview above.
Inverter control is responsible for all of the other
inverter functions. Among other things, it defines
how the inverter responds to external control
signals.
Inverter control (Page 185)
The production functions avoid overloads and
operating states that could cause damage to the
motor, inverter and driven load. The motor
temperature monitoring, for example, is set
here.
Protection functions (Page 212)
The command source defines where the control
signals are received from to switch on the motor,
e.g. via digital inputs or a fieldbus.
Command sources (Page 194)
The status messages provide digital and analog
signals at the Control Unit outputs or via the
fieldbus. Examples include the current speed of
the motor or fault message issued by the
inverter.
Status messages (Page 218)
The setpoint source defines how the speed
setpoint for the motor is specified, e.g. via an
analog input or a fieldbus.
Setpoint sources (Page 195)
The setpoint processing uses a ramp-function
generator to prevent speed steps occurring and
to limit the speed to a permissible maximum
value.
Setpoint calculation (Page 202)
0
The motor closed-loop control ensures that the
motor follows the speed setpoint.
Motor control (Page 204)
The functions matching the application provide
e.g. the control of a motor holding brake or allow
a higher-level pressure or temperature control to
be implemented using the technology controller.
Further, the inverter provides solution options
specifically for applications in the area of
pumps, fans and climate control systems
Summary of Contents for SINAMICS G120 CU230P-2
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