Control Units

Overview of key open-loop and closed-loop control functions:

	Closed-loop control types S120	Open-loop control types S120	Main functions S120 for booksize/chassis formats	Comment, note
Infeed Control	Booksize Current control witt/without mains sensor V_DC control with/without mains sensor Chassis Current control with mains sensor V_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 frequency¹⁾
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 (textiles) 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.

Функции

Function modules

For stand-alone drive solutions, the additively activatable function module EPos can be called up on the SINAMICS S120 Control 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 positioner 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 CompactFlash 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 machines of different types are commissioned. When the Control Unit has booted, the data on the CompactFlash Card are read and loaded to the work memory.

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 function and displayed using the STARTER commissioning tool or on the SINUMERIK. Up to 4 signals can be recorded simultaneously. Recording can be triggered as a function of freely selectable boundary conditions, e.g. the value of an input or output variable.