Efficient Networks Siemens Sinamics S120 - Manual (Page 477)

Basic information about the drive system
12.3 Drive objects
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
477
Overview of drive objects
● Drive control
The drive control handles closed-loop control of the motor. At least 1 Motor Module and
at least 1 motor and up to 3 sensors are assigned to the drive control.
Various types of drive control can be configured (e.g. servo control, vector control, etc.).
Several drive controls can be configured, depending on the performance of the Control
Unit and the demands made on the drive control system.
● Control Unit, inputs/outputs
The I/Os on the Control Unit are evaluated within a drive object. High-speed inputs for
probes are processed here in addition to bidirectional digital I/Os.
● Properties of a drive object
– Separate parameter space
– Separate window in STARTER
– Separate fault/alarm system
– Separate PROFIdrive telegram for process data
● Supply: Line Module infeed control with DRIVE-CLiQ interface
If an Active Line Module with a DRIVE-CLiQ interface is used for the infeed in a drive
system, open-loop/closed-loop control is implemented on the Control Unit within a
corresponding drive object.
● Supply: Line Module infeed control with DRIVE-CLiQ interface
If a Line Module without a DRIVE-CLiQ interface is used for the infeed in a drive system,
the Control Unit must handle activation and evaluation of the corresponding signals
(RESET, READY).
● Option Board evaluation
A further drive object is responsible for evaluating an installed Option Board. The specific
method of operation depends on the type of Option Board installed.
● Terminal Module evaluation
A separate drive object handles evaluation of the respective optional Terminal Modules.
Configuring drive objects
During initial commissioning in STARTER, the drive objects processed by means of software
in the Control Unit are created via configuration parameters. Various drive objects can be
created within a Control Unit.
The drive objects are configurable function blocks and are used to execute specific drive
functions.
If you need to configure additional drive objects or delete existing ones after initial
commissioning, the drive system must be switched to configuration mode.
The parameters of a drive object cannot be accessed until the drive object has been
configured and you have switched from configuration mode to parameterization mode.