Brand:Siemens Item No.:6AG1244-0BB12-2BA1 Product Origin:Germany Product Dimensions:73 x 199 x 46 mm Product Weight:0.49 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Siemens 6AG1244-0BB12-2BA1 SIPLUS SINAMICS G120 CU240E-2 USS Control Unit is designed for motor-control applications requiring flexible drive regulation, serial communication, and integrated safety functionality. Based on the standard 6SL3244-0BB12-1BA1, this SIPLUS version features conformal coating and is specified for an extended operating temperature range of -20 to +55 °C.
The CU240E-2 USS supports V/f control and sensorless vector control, allowing it to manage compatible SINAMICS G120 drive configurations across a range of industrial applications. Its RS-485 interface uses the USS protocol, while the integrated I/O provides six digital inputs, three digital outputs, two analog inputs, and two analog outputs for drive commands and process feedback.
With Safety Integrated STO, USB and SD/MMC interfaces, and flexible analog signal configuration, the 6AG1244-0BB12-2BA1 offers a comprehensive control solution for industrial machinery and motor-driven equipment. It is suitable for system integrators and maintenance teams working with compatible SINAMICS G120 installations.
Technical Specifications
Parameter
Specification
Brand
Siemens
Model
6AG1244-0BB12-2BA1
Product Type
Control Unit
Product Designation
SIPLUS SINAMICS G120 CU240E-2 USS
Base Model
6SL3244-0BB12-1BA1
Product Series
SINAMICS G120
Control Unit Type
CU240E-2 USS
Motor Control Modes
V/f Control, Sensorless Vector Control
Communication Interface
RS-485
Communication Protocol
USS
Digital Inputs
6
Digital Outputs
3
Analog Inputs
2
Analog Outputs
2
Analog Input Signal
-10 to +10 V / 0–20 mA / 4–20 mA
Safety Function
Safety Integrated STO
External Supply Voltage
20.4–28.8 V DC
Maximum Current Consumption
0.5 A
Maximum Power Loss
5.5 W
Memory Interface
SD/MMC
Service Interface
USB
Protection Rating
IP20
Conformal Coating
Yes
Operating Temperature
-20 to +55 °C
Power Module
Not Included
Dimensions
73 × 199 × 46 mm
Weight
0.49 kg / 1.08 lb
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These control units have different communication interfaces and environmental specifications. Select the correct version according to the drive architecture and network requirements.
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Verify Power Module compatibility, firmware requirements, safety configuration, and communication interfaces before selecting replacement or associated components.
Applications
The Siemens 6AG1244-0BB12-2BA1 is a SIPLUS SINAMICS G120 CU240E-2 USS Control Unit designed to manage and control compatible SINAMICS G120 drive systems. It provides drive regulation, communication, and signal-processing functions, making it suitable for industrial motor-control applications.
Typical application areas include:
Industrial motor control: Manages compatible G120 drives used in pumps, fans, compressors, and conveyor systems.
Speed regulation: Supports V/f control and sensorless vector control for applications requiring adjustable motor speed.
Machine automation: Processes digital and analog signals from PLCs, sensors, and external control devices.
Serial communication: Uses an RS-485 interface with the USS protocol for communication with compatible automation equipment.
Safety-related applications: Supports Safety Integrated Safe Torque Off (STO) to help prevent unintended motor torque generation.
Industrial environments: The SIPLUS design with conformal coating is intended for installations requiring additional environmental protection.
Advantages
Flexible Drive Control
The CU240E-2 USS supports V/f control and vector control without an encoder, providing flexibility for different motor-control requirements.
Integrated Safety Function
Safety Integrated STO helps prevent the drive from generating torque when the safety function is activated, supporting machinery safety architectures.
Multiple I/O Channels
With six digital inputs, three digital outputs, two analog inputs, and two analog outputs, the control unit supports a range of drive-control and monitoring signals.
USS Communication Interface
The RS-485 interface supports USS protocol communication with compatible devices, allowing integration into serial automation networks.
Flexible Analog Signal Processing
The two differential analog inputs can be configured for voltage or current signals, supporting different sensor and reference-signal arrangements.
SIPLUS Environmental Protection
Conformal coating and an extended operating temperature specification make this version suitable for more demanding industrial environments than standard configurations.
Technical FAQs
1. What is the main function of the 6AG1244-0BB12-2BA1?
It is a CU240E-2 USS control unit for the SINAMICS G120 drive system. It handles motor-control functions, I/O processing, communication, and integrated safety functions.
2. Which motor-control modes does this control unit support?
It supports V/f control with linear or square characteristics, ECO modes, flux-current control, and sensorless vector control. It does not support encoder-based vector control.
3. Which communication protocol does the unit use?
It provides one RS-485 interface and supports the USS protocol for communication with compatible devices.
4. Does the 6AG1244-0BB12-2BA1 support PROFINET?
No. This version uses RS-485 with USS communication. For a PROFINET-based G120 control unit, a compatible CU240E-2 PN version should be considered.
5. How many digital and analog I/O channels are available?
The unit provides six digital inputs, three digital outputs, two analog inputs, and two analog outputs. One digital input can be configured for fail-safe use as part of the supported safety arrangement.
6. What signal types can the analog inputs accept?
The two differential analog inputs can be configured for voltage signals from -10 V to +10 V or current signals of 0/4–20 mA using the appropriate DIP-switch settings.
7. What is the function of the STO safety feature?
Safe Torque Off prevents the drive from producing torque when the safety function is activated. It is intended for safety-related applications and must be implemented according to the applicable safety design and documentation.
8. What external power supply does the control unit require?
The external supply range is 20.4–28.8 V DC. The control unit can also receive its operating voltage from the compatible Power Module.
9. Can this control unit operate without a SINAMICS G120 Power Module?
It is supplied as a control unit without a Power Module. However, normal drive operation requires a compatible SINAMICS G120 Power Module and a suitable motor configuration.
10. What should be checked if the drive does not respond to control commands?
Check the control-unit supply, Power Module connection, USS communication settings, control-source parameters, I/O wiring, and active fault messages. Also verify that the motor data and control mode are configured correctly in the drive parameters.
