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- Siemens
- 6SN1118-1NJ01-0AA0
- 1-Axis Control Unit
- Germany
- 305 × 51 × 127 mm
- 0.79 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Siemens 6SN1118-1NJ01-0AA0 is a SIMODRIVE 611 universal HR single-axis control-loop block for resolver-based motor feedback, supporting speed and torque setpoint control alongside positioning functionality. It operates within the SIMODRIVE 611 drive architecture, where the control unit processes motion commands and motor feedback for a compatible drive axis.
In a CNC machine tool, a feed axis must respond to movement commands while maintaining the required relationship between commanded and actual motor position. This control unit handles the configured control functions for one resolver-equipped axis, working with the associated power module to regulate motor operation. The higher-level machine controller coordinates the movement sequence, while the drive system performs the corresponding closed-loop control.
The positioning capability distinguishes the 6SN1118-1NJ01-0AA0 from the related 6SN1118-0NJ01-0AA0 speed/torque setpoint version. The correct variant depends on whether the application requires positioning functions in addition to speed or torque control.
This module belongs to the earlier SIMODRIVE 611 universal HR hardware generation. When selecting it for an existing machine or replacement project, the control-board generation, motor feedback arrangement, power module, and required control functions must all match the intended configuration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model / Article Number | 6SN1118-1NJ01-0AA0 |
| Product Family | SIMODRIVE 611 universal HR |
| Product Type | 1-Axis Control Unit |
| Number of Axes | 1 |
| Feedback Type | Resolver |
| Control Functions | Speed, torque, and positioning |
| Drive System | SIMODRIVE 611 universal |
| Control Architecture | Closed-loop drive control |
| Expansion Capability | Compatible optional interface modules |
| Typical Application | Resolver-based single-axis feed and positioning drives |
| Dimensions | 305 × 51 × 127 mm |
| Weight | 0.79 kg |
Product Features
- Single-axis drive control: Handles the configured control functions for one compatible motor axis.
- Resolver feedback: Uses supported resolver signals for motor feedback.
- Positioning capability: Supports positioning functions alongside speed and torque setpoint control.
- SIMODRIVE 611 integration: Works with compatible power modules and the wider machine-control system.
- Optional interface expansion: Supports designated interface modules where required by the application.
- Independent axis configuration: Allows the drive parameters and feedback arrangement to be set for the specific motor.
- Control-function selection: Provides a positioning-capable alternative to the related speed/torque-only version.
- Legacy machine integration: Supports maintenance and replacement planning for compatible SIMODRIVE 611 universal HR installations.
Working Principle
The 6SN1118-1NJ01-0AA0 functions as the control element for a single resolver-equipped drive axis. It receives the configured motion command and processes motor feedback to regulate operation through the associated power module.
A typical arrangement follows this sequence:
Machine Controller → Position and Speed Commands → 6SN1118-1NJ01-0AA0 → Power Module → Motor
Motor Resolver → Feedback Signal → Control Unit
During a positioning operation, the machine controller specifies the required movement. The control unit processes the configured command and resolver feedback, while the associated power module supplies the electrical energy needed by the motor. The control loop uses feedback to regulate the motor’s response according to the configured drive parameters.
For example, a machine tool may use a dedicated feed motor to position a cutting mechanism. The machine controller issues the movement command, and the control unit manages the corresponding drive-control functions. The mechanical transmission, motor characteristics, feedback configuration, and parameter settings all influence the resulting positioning performance.
Resolver compatibility is essential to correct operation. The resolver, feedback cable, motor configuration, and control unit must form a compatible measurement chain. A control unit intended for resolver feedback should not automatically be substituted with a version intended for sin/cos incremental encoder feedback.
The control unit does not supply the motor’s main operating power directly. It works with a compatible SIMODRIVE 611 power module, the motor feedback circuit, and the machine controller to complete the drive-control arrangement.
Role in the SIMODRIVE 611 Control Architecture
The 6SN1118-1NJ01-0AA0 occupies the control layer between the machine controller and the power stage. It processes the commands and resolver feedback for one axis, while the associated power module drives the motor and the higher-level controller coordinates the machine sequence.
Machine Controller → Position and Speed Commands → 6SN1118-1NJ01-0AA0 → Power Module → Motor
Motor Resolver → Feedback Connection → Control Unit
| System Component | Function |
|---|---|
| 6SN1118-1NJ01-0AA0 | Provides single-axis closed-loop control with positioning capability |
| SIMODRIVE 611 Power Module | Supplies electrical power to the connected motor |
| Compatible Siemens Motor | Produces the required mechanical movement |
| Motor Resolver | Supplies feedback for the control loop |
| Machine Controller | Generates movement commands and coordinates machine operation |
| Resolver Feedback Cable | Carries the feedback signal to the control unit |
| Motor Power Cable | Connects the motor to its power stage |
| TERMINALS Option Module | Provides supported terminal-interface functionality |
| PROFIBUS DP Option Module | Adds compatible fieldbus communication where configured |
| Commissioning Tools | Support parameterization and functional testing |
Industrial Applications
| Application | Typical Use |
|---|---|
| CNC Machine Tools | Controlling a resolver-based feed or positioning axis |
| Machine-Tool Feed Drives | Regulating the movement of a tool mechanism |
| Industrial Positioning Systems | Controlling a single motor-driven axis |
| Metalworking Machinery | Managing feed movement during machining |
| Automated Production Equipment | Controlling a dedicated positioning mechanism |
| Material Processing Systems | Regulating compatible motor-driven equipment |
| Machine-Tool Rebuilding | Replacing a control unit after checking the drive configuration |
| Legacy SIMODRIVE Installations | Maintaining compatible single-axis drive systems |
| Industrial Motion-Control Cabinets | Providing closed-loop control for a dedicated axis |
| Precision Feed Mechanisms | Coordinating motor movement with machine-controller commands |
Installation and Maintenance
- Verify the complete order number: Confirm 6SN1118-1NJ01-0AA0 and distinguish it from the related speed/torque-only version.
- Check the drive-system configuration: Verify that the installed SIMODRIVE 611 system supports the intended universal HR control unit.
- Confirm motor compatibility: Check the motor type and resolver arrangement against the control unit’s supported configuration.
- Verify power-module compatibility: Ensure that the associated power stage is suitable for the connected motor and required operating conditions.
- Isolate the equipment: Follow the approved electrical safety procedure and verify that hazardous energy has been removed before accessing the drive system.
- Inspect resolver wiring: Check the feedback cable, connector, shielding, and signal assignment for damage or incorrect connections.
- Review optional interfaces: Confirm whether the machine requires a TERMINALS or PROFIBUS DP option and verify the selected module’s compatibility.
- Check motor parameters: Verify the motor data, feedback configuration, setpoint scaling, and relevant control settings.
- Verify positioning configuration: Confirm that the required positioning functions and machine-controller commands are configured correctly.
- Test the feedback response: During controlled commissioning, verify that the resolver signal corresponds to the intended motor movement.
- Investigate positioning deviations: Check feedback wiring, axis parameters, mechanical transmission, and power-stage operation if actual movement differs from the command.
- Document the completed configuration: Record the control-unit reference, motor details, resolver connections, option modules, parameter settings, and commissioning results.
Compatible System Components
| Component | Function |
|---|---|
| Siemens SIMODRIVE 611 Power Module | Supplies electrical power to the connected motor |
| Compatible Siemens Resolver-Based Motor | Provides mechanical movement and resolver feedback |
| Motor Resolver | Supplies feedback for closed-loop regulation |
| Resolver Feedback Cable | Connects the resolver to the control unit |
| Motor Power Cable | Connects the motor to its power stage |
| Higher-Level Machine Controller | Generates motion commands and coordinates machine operation |
| Siemens 6SN1114-0NA00-0AA0 TERMINALS Option | Provides supported terminal-interface functionality |
| Siemens 6SN1114-0NB00-0AA2 PROFIBUS DP2 Option | Adds compatible PROFIBUS communication functionality |
| SIMODRIVE Commissioning Tools | Support parameterization and drive testing |
| Drive-System Documentation | Defines the required component combination and setup procedure |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| Siemens 6SN1118-1NJ01-0AA0 | 1-Axis Control Unit | Single-axis resolver-based positioning |
| Siemens 6SN1118-0NJ01-0AA0 | 1-Axis Control Unit | Single-axis resolver speed/torque control |
| Siemens 6SN1118-1NJ01-0AA1 | 1-Axis Control-Loop Block | Related positioning-capable resolver configuration |
| Siemens 6SN1118-0NJ01-0AA1 | 1-Axis Control-Loop Block | Resolver-based speed/torque setpoint control |
| Siemens 6SN1118-1NK01-0AA1 | 2-Axis Positioning Control Module | Two-axis resolver-based positioning |
| Siemens 6SN1114-0NB00-0AA2 | PROFIBUS DP2 Option Module | Adding supported PROFIBUS communication functionality |
Key Advantages
- Provides single-axis closed-loop control for compatible resolver-equipped motors.
- Supports positioning alongside speed and torque setpoint control.
- Integrates with the SIMODRIVE 611 universal HR drive architecture.
- Works with compatible power modules and higher-level machine controllers.
- Supports designated interface expansion where required.
- Helps maintain existing drive installations when the control configuration is matched correctly.
Technical FAQs
What is the functional difference between the 6SN1118-1NJ01-0AA0 and the 6SN1118-0NJ01-0AA0?
The 6SN1118-1NJ01-0AA0 is the positioning-capable single-axis resolver control unit, while the 6SN1118-0NJ01-0AA0 is the speed/torque setpoint version. The required control functions should determine which variant is selected.
Why must the motor’s resolver be checked before installing this unit?
The control unit depends on compatible resolver feedback to regulate the motor. The resolver type, cable connections, signal assignment, and motor parameters must match the intended configuration for the feedback loop to operate correctly.
Can a two-axis SIMODRIVE control board replace this single-axis unit?
Not automatically. Although some SIMODRIVE universal HR two-axis boards can be used in single-axis arrangements, their feedback interfaces and control functions must match the existing application. The complete order number and system configuration should be checked before substitution.
What should be investigated if the motor responds to speed commands but positioning is inaccurate?
Check the resolver feedback, positioning parameters, command scaling, reference procedure, mechanical transmission, and associated power module. Incorrect feedback interpretation or inconsistent controller scaling can cause the actual position to differ from the commanded target.