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The Siemens 6SN1118-0AE11-0AA0 is a SIMODRIVE 611-A plug-in closed-loop control unit configured for two axes, designed for feed drives using compatible 1FT5 motors and a standard interface. It belongs to the analog control generation of the SIMODRIVE 611 drive system and provides the control functions needed to regulate motor operation within a compatible drive configuration.
In a machine tool, the feed-drive control unit is responsible for the closed-loop regulation associated with axis movement. It works with the drive system’s power section, motor feedback arrangement, and higher-level numerical control system to support commanded motion. The control unit itself does not supply the motor’s main power; that function belongs to the associated power module.
The two-axis configuration allows the unit to support two feed-drive axes within the applicable SIMODRIVE 611-A architecture. This arrangement can reduce the need for separate single-axis control units in machines whose axis configuration is supported by the system. Both axes must be configured according to the drive design and the connected motors.
The standard interface distinguishes this model from other SIMODRIVE control units with different interface arrangements or feedback requirements. It is intended for the specified 1FT5 feed-drive application rather than being a universal replacement for every SIMODRIVE 611 control board. Motor compatibility, power-module selection, and the required feedback configuration are important parts of the overall drive arrangement.
For example, a machine tool with two coordinated feed axes may use the control unit as part of a SIMODRIVE 611-A system connected to a numerical control. The numerical control supplies motion commands, while the drive system regulates the associated motors according to the configured control loops. Positioning accuracy and dynamic response depend on the complete mechanical, electrical, and control configuration.
The 6SN1118-0AE11-0AA0 is therefore a specialized component for compatible SIMODRIVE 611-A feed-drive systems. Its role is to provide the required closed-loop control functions for the configured axes, not to replace the drive power section or the machine’s higher-level motion controller.
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6SN1118-0AE11-0AA0 |
| Product Family | SIMODRIVE 611-A |
| Product Type | Plug-In Closed-Loop Control Unit |
| Control Configuration | Two-axis |
| Drive Application | Feed drives |
| Compatible Motor Family | Siemens 1FT5, for the specified configuration |
| Interface Type | Standard interface |
| Control Technology | Analog |
| Installation Type | Plug-in control unit for SIMODRIVE 611-A |
| System Function | Closed-loop feed-drive control |
| Dimensions | 305 × 51 × 152 mm |
| Weight | 1 kg |
The 6SN1118-0AE11-0AA0 performs closed-loop control for two feed-drive axes within the SIMODRIVE 611-A system. It receives the applicable control commands and feedback signals, processes the control requirements, and works with the associated power section to regulate the connected motors.
Numerical Control → SIMODRIVE 611-A Control Unit → Power Module → Feed-Drive Motor → Mechanical Axis
The numerical control system determines the required movement and supplies the corresponding command information. The control unit processes the drive-control requirements for each configured axis and uses the available feedback information to regulate motor operation.
The power module supplies the electrical power required by the motor. The control unit manages the associated control process, while the motor converts electrical energy into mechanical movement through the machine’s feed mechanism. Feedback from the configured measurement system allows the drive control to respond to deviations between the commanded and actual operating conditions.
In a machine tool, this arrangement supports controlled movement of feed axes such as a table, carriage, or tool slide. The two-axis configuration allows both axes to be handled within the supported drive architecture, although the actual coordination of machine movements remains dependent on the numerical control program and machine configuration.
Correct operation requires the control unit, power module, motor, feedback arrangement, and numerical control to be compatible. Axis parameters and drive settings must correspond to the installed hardware. A fault in the feedback circuit, power section, motor connection, or higher-level control system can affect axis behavior even when the control unit itself is functioning correctly.
The 6SN1118-0AE11-0AA0 occupies the drive-control position between the numerical control system and the power section. It provides closed-loop control for the supported axes, while the power module supplies motor power and the machine’s mechanical transmission converts motor rotation into linear or rotary movement.
Numerical Control → SIMODRIVE 611-A Control Unit → Power Module → 1FT5 Feed-Drive Motors → Machine Axes
| System Component | Function |
|---|---|
| Siemens 6SN1118-0AE11-0AA0 | Provides two-axis closed-loop control for the specified feed-drive arrangement |
| SIMODRIVE 611-A Power Module | Supplies the power required by the connected drive motors |
| Siemens 1FT5 Feed-Drive Motor | Converts electrical energy into mechanical motion |
| Motor Feedback System | Supplies the feedback signals required by the configured control loop |
| Numerical Control System | Generates axis commands and coordinates machine movements |
| Machine Mechanical Transmission | Transfers motor motion to the relevant feed axis |
| Drive Power Supply | Supplies the electrical energy required by the drive system |
| Control Cabinet | Houses the drive modules and associated control equipment |
| Machine Interlock System | Coordinates permitted operation with machine conditions and protective functions |
| Application | Typical Use |
|---|---|
| CNC Machine Tools | Controlling compatible feed axes within a SIMODRIVE 611-A architecture |
| Milling Machines | Regulating feed-drive operation for supported machine axes |
| Turning Machines | Supporting controlled feed movement in compatible CNC installations |
| Grinding Machines | Providing drive control for configured feed mechanisms |
| Machining Centers | Integrating two feed-drive axes into a compatible numerical-control system |
| Automated Production Machinery | Controlling feed mechanisms requiring closed-loop motor regulation |
| Precision Manufacturing Equipment | Supporting repeatable axis movement within the configured drive system |
| Machine Retrofit Projects | Replacing a matching control unit in an existing compatible SIMODRIVE installation |
| Industrial Motion Systems | Regulating compatible feed axes driven by specified 1FT5 motors |
| Legacy CNC Installations | Maintaining the original analog-control architecture where the existing hardware configuration requires this model |
| Component | Function |
|---|---|
| Siemens 6SN1118-0AE11-0AA0 | Two-axis plug-in closed-loop control unit for compatible SIMODRIVE 611-A feed drives |
| SIMODRIVE 611-A Power Module | Supplies motor power for the configured drive axes |
| Siemens 1FT5 Feed-Drive Motor | Provides mechanical movement for the machine axis |
| Motor Feedback Components | Supply the feedback signals required by the drive-control arrangement |
| Numerical Control System | Generates motion commands and coordinates machine operation |
| SIMODRIVE 611-A Drive System | Provides the modular drive architecture for compatible applications |
| Drive Power Supply | Supplies electrical energy to the drive system |
| Control Cabinet Components | Support the installation and electrical integration of the drive modules |
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Siemens 6SN1118-0AE11-0AA0 | SIMODRIVE 611-A Plug-In Closed-Loop Control Unit, Two Axes | Feed drives with 1FT5 motors and standard interface |
| Siemens 6SN1118-0AE11-0AA1 | SIMODRIVE 611-A Plug-In Closed-Loop Control Unit, Two Axes | Related ordering reference for the same general feed-drive configuration |
| Siemens 6SN1118-0AD11-0AA0 | SIMODRIVE 611-A Plug-In Closed-Loop Control Unit, One Axis | Compatible one-axis standard-interface feed-drive applications |
| Siemens 6SN1118-0AA11-0AA0 | SIMODRIVE 611-A Feed-Drive Control Unit | One-axis analog feed-drive control with a user-friendly interface |
| Siemens SIMODRIVE 611-A | Modular Drive System | Compatible machine-tool feed-drive applications |
| Siemens 1FT5 Motor Family | Feed-Drive Synchronous Motors | Motor applications specified for the corresponding drive configuration |
The unit is configured to control two feed-drive axes within the supported SIMODRIVE 611-A architecture. Each axis requires the appropriate motor, feedback arrangement, and drive parameters, while overall machine movement is coordinated by the numerical control system.
The specified application is for feed drives using compatible Siemens 1FT5 motors and the standard interface arrangement. Motor and feedback compatibility are determined by the complete drive configuration, including the power module and numerical control.
The standard interface identifies the control-unit configuration intended for the specified SIMODRIVE 611-A application. It should not be treated as interchangeable with control units that use different interface arrangements or feedback configurations.
Check the control-unit installation, power-module status, motor and feedback connections, axis assignments, drive parameters, and communication with the numerical control. A fault elsewhere in the drive system can prevent movement even when the replacement control unit is installed correctly.