SIEMENS
5/20
Siemens NC 62 · 2016
5
SINAMICS S120 drive system
Control Units
■
Overview
Overview of key open-loop and closed-loop control functions
■
Function
Function modules
For stand-alone drive solutions, the additively activatable func-
tion module EPos can be called up on the SINAMICS S120 Con-
trol Units for the absolute/relative positioning of linear and rotary
axes (Modulo) with motor encoders (indirect measuring system)
or machine encoders (direct measuring system). The basic po-
sitioner can be used to resolve uncomplicated and clear motion
control tasks without additional external technological outlay
from the drive itself.
Integrated safety functions
The Control Units support drive-autonomous Safety Integrated
Basic functions and also licensed Safety Integrated Extended
functions.
CompactFlash card
The functions of the SINAMICS S120 drives are stored on a Com-
pactFlash card. This card contains the firmware and parameter
settings for all drives in the form of a project. The CompactFlash
card can also hold additional projects, which means that the
correct project can be accessed immediately when series ma-
chines of different types are commissioned. When the Control
Unit has booted, the data on the CompactFlash card is read and
loaded to the RAM.
The firmware is organized in objects. Drive objects are used to
implement open-loop and closed-loop control functions for Line
Modules, Motor Modules, Power Modules and other system
components connected by DRIVE-CLiQ.
Diagnostics optimally supported by trace function
The time characteristics of input and output variables associated
with drive objects can be measured by the integrated trace func-
tion and displayed using the STARTER commissioning tool or on
the SINUMERIK. The trace can record up to 4 signals simultane-
ously. A recording can be triggered as a function of freely select-
able boundary conditions, e.g. the value of an input or output
variable.
Description
Closed-loop control types
S120
Open-loop control types
S120
Main functions S120 for
booksize/chassis format
Comment, note
Infeed control
• Booksize
-
Current control
with/without mains sensor
-
U
DC
control
with/without mains sensor
• Chassis
-
Current control
with mains sensor
-
U
DC
control
with mains sensor
• Booksize
-
Smart Line mode
can be selected
• Chassis
- None
• Mains identification
• Controller optimization
• Harmonics filter
• Integral reactive current
compensation can be
activated for the drive
components
• Automatic restart
• The mains sensor is the
VSM10 Voltage Sensing
Module; "current" is the
line current;
3-phase with line
frequency
1)
Servo control
• Asynchronous motor
-
Torque control
with encoder
-
Speed control
with/without encoder
• Synchronous motor, linear
motor and torque motor
-
Torque control
with encoder
-
Speed control
with encoder
• For all motor types
-
Position control
with encoder
• Linear/parabolic
characteristic
• Fixed-frequency
characteristic (textile)
• Independent voltage
setpoint input
• Data set changeover
• Setpoint input
• Motor identification
• Damping application
• Reduced magnetic flux in
the asynchronous motor for
reducing the thermal load on
the machine
• Technology controller
• Basic positioner
• The position control can be
selected as a function
module (stand-alone drives)
1)
Operation of a Voltage Sensing Module is not approved with a
SINUMERIK system.
© Siemens AG 2016