SIEMENS
6/11
Siemens CR 1 · 2015
6
Drive systems
SINAMICS S120 built-in devices
Control Units
■
Overview
Innovative system architecture with a central Control Unit
Electronically coordinated single drives work together to per-
form your drive tasks. Higher-level controllers operate the drives
to achieve the required coordinated movement. This requires
cyclic data exchange between the controller and the drives. This
exchange usually took place via a field bus, which required a
great deal of time and effort for installation and configuration.
SINAMICS S120 takes a different approach: A central Control
Unit controls the drives for all connected axes and also establi-
shes the technological links between the drives and/or axes.
Since all the required data is stored in the central Control Unit,
it does not need to be transferred. Inter-axis connections can be
established within a Control Unit and easily configured in the
STARTER commissioning tool using a mouse.
•
Simple technological tasks can be carried out automatically
by the SINAMICS S120 Control Unit
• The
CU310-2 DP
or
CU310-2 PN
Control Unit are available for
single drives
• The
CU320-2
Control Unit is designed for multi-axis applica-
tions
•
Sophisticated Motion Control tasks can be implemented with
the support of the more powerful
D410-2, D425-2, D435-2,
D445-2
and
D455-2
Control Units of SIMOTION D (graded
according to performance)
Each of these Control Units is based on an object-oriented
SINAMICS S120 standard firmware which contains all of the
most popular control modes and can be scaled to meet even the
most advanced performance requirements.
The drive controls are supplied as ready-to-configure drive
objects:
•
Infeed Control for line infeed,
•
Vector Control for the broad scope of rugged asynchronous
(induction) motor applications
•
Servo Control for permanent-field synchronous motors with
demanding dynamic requirements
•
V/f
control modes for simple applications such as group drives
with SIEMOSYN motors
Drive objects
A drive object is a self-contained software function with its own
parameters and, if necessary, its own fault messages and
alarms.
Extended technology with SIMOTION
SIMOTION D Control Units support the coordinated Motion Con-
trol of multiple drives. Technology objects are implemented in
addition to drive objects on these Control Units. These are grou-
ped to form technology packages and make available extended
Motion Control functions (e.g. synchronous operation, cam disk,
path interpolation and others) or technological functions (e.g. a
cam controller, a temperature or pressure control). The IEC
61131-3-compliant PLC integrated in SIMOTION D Control Units
means that they are not just capable of controlling sequences of
motions, but the entire machine including HMI and I/Os.
Comprehensive package of open-loop and closed-loop
control functions
A wide variety of standard functions such as setpoint input, data
set changeover, controller optimization and kinetic buffering en-
sure a high degree of functional reliability and excellent flexibility
of application.
G_D211_EN_00057a
Infeed
control
Drive
control
Drive
control
Terminal
Module
evaluation
Terminal
Module
evaluation
Option
Board
evaluation
On-board
I/O
evaluation
Drive objects
Control Unit
Terminal
Module
Terminal
Module
Motor
Module
Motor
Module
Line
Module
Option
Board
...
...
© Siemens AG 2015