6SL3120-1TE21-0AA4 SINAMICS S120 Single Motor Module 9A Booksize

The 6SL3120-1TE21-0AA4 is a SINAMICS S120 Single Motor Module designed to control one motor axis in a modular drive system.

It receives power from the shared 600 V DC link and produces a controlled three-phase 400 V AC output with a rated current of 9 A.

The 9 A output class places this module between low-current 3 A auxiliary-axis modules and larger 30 A, 45 A or 60 A power stages. It is suitable for servo axes that require more current than small positioning drives but do not need a high-current Motor Module.

Its Booksize construction supports side-by-side installation with compatible Line Modules, Control Units and additional Motor Modules.

The internal air-cooling system and optimized pulse patterns support stable motor-current control during repeated positioning, acceleration and deceleration cycles.

As a spare-part model, the 6SL3120-1TE21-0AA4 is particularly relevant for maintaining existing machines originally configured with this exact hardware version.

Key Features

• 9 A single-axis motor output
• 600 V DC-link input
• Three-phase 400 V AC output
• Compact Booksize construction
• Internal air cooling
• Optimized pulse patterns
• Extended Safety Integrated support
• DRIVE-CLiQ cable included
• Suitable for existing machine replacement

Typical Applications

• Packaging machine axes
• CNC auxiliary drives
• Printing equipment
• Assembly machinery
• Material feeding systems

9 A Single-Axis Configuration

The 6SL3120-1TE21-0AA4 controls one motor channel with a rated output current of 9 A.

This current class is suitable for:

• Medium-small servo motors
• Feeder axes
• Indexing mechanisms
• Positioning tables
• Adjustment drives
• Repetitive machine movements

It provides a more appropriate power stage than oversized 45 A or 60 A modules when the connected motor requires a lower continuous current.

Single Motor Module Function

The module converts DC-link energy into controlled AC motor output.

Its main functions include:

• Motor-current regulation
• Speed-control support
• Torque-control support
• Dynamic acceleration
• Controlled deceleration
• Axis status monitoring
• Drive fault diagnostics

Higher-level motion control and system coordination are performed by the connected Control Unit.

Booksize System Integration

The Booksize format is designed for modular cabinet installation.

Typical installation advantages include:

• Side-by-side module arrangement
• Shared DC-link busbars
• Reduced internal wiring
• Organized multi-axis layout
• Flexible system expansion
• Easier module replacement

The exact physical dimensions should be confirmed from the product data sheet or the existing installed module before replacement.

Internal Air Cooling

The 6SL3120-1TE21-0AA4 uses internal air cooling.

Reliable operation requires:

• Correct vertical installation
• Clear ventilation openings
• Adequate cabinet airflow
• Suitable ambient temperature
• Clean cooling channels
• Correct installation clearance

Restricted airflow can lead to thermal alarms or reduced operating capability.

Optimized Pulse Patterns

The module supports optimized pulse patterns for controlled motor-side power conversion.

This contributes to:

• Stable motor-current regulation
• Smooth torque development
• Consistent low-speed operation
• Reliable acceleration response
• Reduced current fluctuation
• Repeatable positioning performance

Safety Integrated Support

The module supports extended Safety Integrated functions when used in a compatible drive system.

Available safety functions depend on:

• Connected Control Unit
• Firmware version
• Motor encoder
• Safety license
• DRIVE-CLiQ topology
• Machine safety configuration

Do not publish a specific SIL or PL rating unless the complete implemented safety function has been validated.

DRIVE-CLiQ Communication

DRIVE-CLiQ connects the Motor Module with compatible drive components.

Typical communication functions include:

• Automatic component identification
• Parameter exchange
• Operating-status transfer
• Fault and warning diagnostics
• System topology detection
• Simplified commissioning

System Requirements

A complete operating system normally includes:

• Compatible Line Module
• Shared DC link
• Control Unit
• Single Motor Module
• Compatible motor
• Motor feedback device
• DRIVE-CLiQ connection
• Approved drive parameters

The 6SL3120-1TE21-0AA4 is not a standalone frequency inverter.

Replacement Identification

Correct Model Number

6SL3120-1TE21-0AA4

Product Configuration

Single Motor Module

9 A rated output

600 V DC input

400 V AC three-phase output

Booksize construction

Internal air cooling

DRIVE-CLiQ cable included

Before replacement, confirm:

• Complete order number
• AA4 suffix
• Rated output current
• Motor current requirement
• Cooling method
• Firmware compatibility
• Safety configuration
• DRIVE-CLiQ topology
• Existing machine parameters

Do not select the replacement only according to appearance or the 6SL3120 product prefix.

Installation Guidelines

Disconnect the complete drive-system supply.

Wait for the DC link to discharge fully.

Verify the absence of hazardous voltage.

Back up the existing drive parameters.

Confirm the exact order number.

Inspect DC-link contacts and busbars.

Check motor and encoder wiring.

Confirm cabinet airflow.

Connect DRIVE-CLiQ correctly.

Restore the approved parameters.

Test the motor at reduced speed.

Verify current and thermal behavior.

Check all safety functions before production use.

Installation should be completed by qualified drive-system personnel.

FAQ

Q1: What is 6SL3120-1TE21-0AA4?

A1: It is a SINAMICS S120 Single Motor Module used to control one motor axis.

Q2: What is its rated output current?

A2: The rated output current is 9 A.

Q3: What input voltage does it use?

A3: It receives power from a 600 V DC link.

Q4: What output voltage does it provide?

A4: It provides controlled three-phase 400 V AC motor output.

Q5: Is it a complete servo drive?

A5: No. It is a Motor Module that must be used with a compatible Line Module, Control Unit and motor.

Q6: What makes this model different from 3 A modules?

A6: It provides a higher 9 A current capacity for medium-small servo axes.

Q7: What makes it different from 45 A or 60 A modules?

A7: It is intended for lower-current axes and uses less power-stage capacity than larger Motor Modules.

Q8: What cooling method is used?

A8: It uses internal air cooling.

Q9: Does it support Safety Integrated functions?

A9: Yes. It supports extended Safety Integrated functions in a compatible system configuration.

Q10: Is the model still actively produced?

A10: It is officially managed as a spare-part product for existing installations.