Siemens · SINAMICS G120 · CU240S
Siemens 6SL3244-0BA20-1BA0 SINAMICS G120 CU240S Control Unit
The Siemens 6SL3244-0BA20-1BA0 is a CU240S Control Unit
for the modular SINAMICS G120 converter platform. It provides the control,
parameterization, signal-processing and motor-control functions required to
operate a compatible G120 Power Module within an industrial drive system.
SINAMICS G120 CU240S RS485 / USS Encoder Interface IP20
Control Unit Overview
Product Profile
The Siemens 6SL3244-0BA20-1BA0 is part of the original
CU240 generation developed for SINAMICS G120 standard converters.
The Control Unit carries out closed-loop drive control and also provides
configurable functions that can be adapted to the machine or process through parameterization.
This CU240S version is intended for standard applications and includes
general-purpose digital and analog I/O together with an encoder interface,
temperature-sensor interface and serial communication capability.
Siemens Technical Specifications
Technical Data
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Manufacturer
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Siemens
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Article Number
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6SL3244-0BA20-1BA0
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Product Family
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SINAMICS G120
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Designation
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CU240S Control Unit
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Operating Voltage
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24 V DC via Power Module or external 24 V DC supply
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Maximum 24 V Current Consumption
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0.5 A
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Power Loss at Full Load
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Less than 5.5 W
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Standard Digital Inputs
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9
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Digital Outputs
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3
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Analog Inputs
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2
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Analog Outputs
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2
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Encoder Interface
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1
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Communication
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RS485 / USS
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Motor Temperature Interface
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PTC / KTY
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Memory Card Interface
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MMC interface
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Degree of Protection
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IP20
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Operating Temperature
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-10°C to +50°C
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Storage Temperature
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-40°C to +70°C
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Relative Humidity
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Below 95%, condensation not permitted
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Signal Cable Cross-Section
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0.05 to 2 mm²
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Role Inside the Drive
System Role
Converter Control
Executes the closed-loop control functions required to operate the connected Power Module and motor.
Signal Processing
Processes machine commands, sensor signals, setpoints and drive-status information through its configurable I/O.
Motor Feedback
Provides an encoder connection for drive configurations that require motor or machine feedback.
Parameterization
Drive behavior can be adapted through parameters, drive-data sets and command-data sets.
Motor Protection Support
Supports motor-temperature monitoring through the dedicated temperature-sensor interface.
Serial Communication
Provides serial drive communication for control and commissioning within compatible automation architectures.
System Integration
Compatibility
The 6SL3244-0BA20-1BA0 was designed for the modular
SINAMICS G120 platform. In this architecture, the Control Unit and Power Module
operate as separate but coordinated components of the complete converter.
Before Replacing a CU240S
Verify the installed Power Module generation, firmware, communication method,
encoder requirements, I/O assignment, parameter set, memory-card data and
commissioning configuration before replacing the Control Unit.
Newer Control Unit Generations
Siemens later introduced CU240B-2 and CU240E-2 Control Units for newer
SINAMICS G120 configurations. A newer Control Unit should not be treated
as an automatic plug-in replacement for the earlier CU240S because hardware,
firmware, interfaces and commissioning requirements differ between generations.
General Machinery
Applications
SINAMICS G120 standard converters are used for variable-speed motor control
across general industrial machinery. The CU240S configuration is suitable where
standard drive control, configurable I/O and feedback capability are required.
Conveyors
Variable-speed control for material transport and handling systems.
Mixers
Drive control for mixing and process machinery.
Extrusion Machinery
Adjustable-speed motor operation in continuous production equipment.
Machine Tools
Motor-control tasks in general mechanical engineering equipment.
Production Lines
Decentralized motor control within automated production systems.
Process Equipment
Configurable control for industrial machines with changing operating conditions.
Product Questions
Frequently Asked Questions
1. What is 6SL3244-0BA20-1BA0?
It is a CU240S Control Unit for the modular Siemens SINAMICS G120 converter platform.
2. Is a Power Module included with 6SL3244-0BA20-1BA0?
No. The Control Unit and Power Module are separate components in the modular G120 architecture.
3. Can the CU240S use motor feedback?
Yes. The CU240S version includes an encoder interface for suitable feedback-based drive configurations.
4. Can parameter data be transferred when replacing the Control Unit?
Existing commissioning data should be backed up and checked against the hardware and firmware of the replacement unit before reuse.
5. Can a CU240E-2 directly replace 6SL3244-0BA20-1BA0?
It should not be assumed to be a direct replacement. The complete converter configuration and commissioning requirements must be verified first.
Automation Parts for Installed Systems
About IndustryParts
IndustryParts focuses on industrial automation components used in plant
maintenance, equipment upgrades and long-life production systems.
Our sourcing range covers drive technology, PLC and DCS hardware,
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