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- Siemens
- 6SN1118-0NK01-0AA1
- 2-Axis Control-Loop Block
- Germany
- 356 × 51 × 178 mm
- 0.8 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Siemens 6SN1118-0NK01-0AA1 is a SIMODRIVE 611 universal HR two-axis control-loop block for resolver-based motor feedback. It supports speed and torque setpoint control and can be expanded with compatible option modules. Within the SIMODRIVE 611 drive system, the module provides two independent drive-control channels for compatible motors, allowing separate axes to be managed within a common machine-control architecture.
In a CNC machine tool, two feed axes may need to follow separate movement commands while maintaining feedback-based motor regulation. The 6SN1118-0NK01-0AA1 processes the setpoints and resolver feedback associated with these axes, working with the corresponding power modules to regulate motor operation. This arrangement is useful when a machine requires coordinated movement without assigning both axes to a single control loop.
The module is intended for compatible resolver-equipped drive configurations and can also support one-axis operation when used with an appropriate drive arrangement. Typical applications include machine-tool feed mechanisms, industrial positioning equipment, and automated machinery using compatible SIMODRIVE 611 components. The actual configuration depends on the motor, power module, feedback interface, and required control functions.
The complete order number is important when selecting a replacement. The 6SN1118-0NK01-0AA1 is the speed/torque setpoint version, while the related 6SN1118-1NK01-0AA1 is the positioning variant. Both use a two-axis resolver-based architecture, but their control functions differ.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model / Article Number | 6SN1118-0NK01-0AA1 |
| Product Family | SIMODRIVE 611 universal HR |
| Product Type | 2-Axis Control-Loop Block |
| Module Configuration | Two independent drive-control channels |
| Feedback Type | Resolver |
| Control Function | Speed / Torque Setpoint Control |
| Drive System | SIMODRIVE 611 |
| Expansion Capability | Compatible optional interface modules |
| Supported Motor Families | Compatible Siemens motor configurations, including selected 1FT6, 1FK, 1FE1, 1FW6, 2SP1, 1PH, 1PM6, and 1FN motors |
| Optional Communication | PROFIBUS DP and supported interfaces, depending on configuration |
| Engineering and Commissioning | Compatible SIMODRIVE configuration tools |
| Dimensions | 356 × 51 × 178 mm |
| Weight | 0.8 kg |
Product Features
- Two-axis control architecture: Provides two independent drive-control channels within a single SIMODRIVE control board.
- Resolver feedback support: Processes feedback from compatible resolver-equipped motors.
- Speed and torque setpoint control: Supports the specified control mode for the connected axes.
- Independent axis regulation: Allows separate setpoints and feedback signals to be handled for the two drive channels.
- SIMODRIVE 611 integration: Operates within the corresponding drive-converter architecture.
- Optional interface expansion: Supports compatible communication and connection options where required.
- Flexible axis utilization: Two-axis control boards can also be used for one-axis applications when the drive configuration permits.
- Configuration-specific compatibility: Requires matching the control-loop block to the motor, power modules, feedback devices, and required control functions.
Working Principle
The 6SN1118-0NK01-0AA1 operates as the closed-loop control element for compatible resolver-based drives. It receives the configured setpoints and processes motor feedback for the corresponding axes. The associated power modules provide the electrical power required by the motors, while the control unit regulates their operation according to the configured control strategy.
A typical control arrangement follows this sequence:
Machine Controller → Setpoint Commands → 6SN1118-0NK01-0AA1 → Power Modules → Motors
Motor Resolvers → Feedback Signals → 6SN1118-0NK01-0AA1
When the machine controller issues a command, the control unit processes the requested speed or torque condition together with the relevant feedback. The drive system adjusts motor operation through the associated power stage. Each axis has its own control and feedback requirements, even though both channels are incorporated into the same control board.
For example, a machine tool may use one motor to control a feed mechanism and another to position an auxiliary axis. The control unit processes the respective drive commands and resolver feedback, while the machine controller coordinates the movements with the production sequence. Actual motion performance also depends on the motor characteristics, mechanical transmission, power-module ratings, and commissioning parameters.
Resolver compatibility is essential to the measuring chain. The motor feedback device, feedback cable, and control module must match the intended configuration. A module intended for resolver feedback should not automatically be substituted with a version intended for sin/cos incremental encoder feedback.
The control-loop block does not independently supply the motors’ main operating power. It relies on compatible SIMODRIVE power modules, a suitable control interface, correctly connected feedback devices, and an appropriate parameter configuration.
Role in the SIMODRIVE 611 Control Architecture
The 6SN1118-0NK01-0AA1 occupies the drive-control layer between the higher-level machine controller and the power stages. It processes setpoints and resolver feedback for two drive channels, while the power modules operate the motors and the machine controller coordinates the overall sequence.
Machine Controller → Setpoint Interface → 6SN1118-0NK01-0AA1 → Power Modules → Motors
Motor Resolvers → Feedback Connections → Control-Loop Block
| System Component | Function |
|---|---|
| 6SN1118-0NK01-0AA1 | Provides two-axis resolver-based speed/torque control |
| SIMODRIVE 611 Power Modules | Supply the connected motors |
| Compatible Siemens Motors | Produce the required mechanical movement |
| Motor Resolvers | Provide feedback for the drive-control loops |
| Machine Controller | Coordinates axis commands and machine operation |
| Setpoint Interface | Transfers speed or torque commands |
| Compatible Option Module | Adds supported communication or connection functionality |
| Motor Power Cables | Connect motors to their associated power stages |
| Resolver Cables | Carry feedback signals to the control unit |
| Commissioning Tools | Support parameterization and drive-system testing |
Industrial Applications
| Application | Typical Use |
|---|---|
| CNC Machine Tools | Controlling two compatible resolver-based feed axes |
| Machine-Tool Feed Mechanisms | Regulating motor operation according to separate setpoints |
| Industrial Positioning Systems | Controlling two motor-driven mechanisms |
| Metalworking Machinery | Coordinating feed movements during machining |
| Automated Production Equipment | Integrating two drive channels into a machine sequence |
| Material Processing Machinery | Controlling compatible motor-driven mechanisms |
| Industrial Motion-Control Cabinets | Providing two-axis closed-loop drive control |
| Machine Rebuilding Projects | Replacing a control-loop block after compatibility checks |
| Legacy SIMODRIVE Installations | Maintaining existing resolver-based drive configurations |
| Multi-Axis Drive Systems | Controlling two axes within a larger machine architecture |
Installation and Maintenance
- Verify the complete order number: Confirm 6SN1118-0NK01-0AA1 and distinguish it from related positioning variants and other hardware configurations.
- Check the drive-system configuration: Confirm that the installed SIMODRIVE 611 system supports the intended universal HR control-loop block.
- Verify both motor configurations: Check the motor types and resolver arrangements for each axis against the supported configuration.
- Confirm power-module compatibility: Ensure that the associated power stages are suitable for the connected motors and their operating requirements.
- Isolate the drive system: Follow the prescribed electrical safety procedure and verify that hazardous energy has been removed before accessing the equipment.
- Inspect feedback connections: Check both resolver circuits, connectors, and cables for damage, loose contacts, or incorrect assignment.
- Review optional interfaces: Confirm whether the machine requires additional communication or terminal options and verify compatibility before installation.
- Check the control parameters: Verify motor data, control modes, setpoint scaling, and other relevant settings for both axes.
- Test feedback channels independently: During controlled commissioning, confirm that each resolver signal corresponds to the intended motor and axis.
- Verify axis assignment: Ensure that each setpoint, feedback signal, and power-module channel is associated with the correct axis in the machine configuration.
- Investigate abnormal operation: If an axis behaves unexpectedly, check its feedback circuit, setpoint interface, motor parameters, power stage, and control configuration.
- Document the completed setup: Record the control-loop block reference, motor assignments, feedback connections, option modules, parameter settings, and commissioning results.
Compatible System Components
| Component | Function |
|---|---|
| Siemens SIMODRIVE 611 Power Modules | Supply electrical power to the connected motors |
| Compatible Siemens Resolver-Based Motors | Provide mechanical movement and resolver feedback |
| Motor Resolvers | Supply feedback for closed-loop regulation |
| Resolver Feedback Cables | Connect the motor feedback devices to the control unit |
| Motor Power Cables | Connect each motor to its power stage |
| Higher-Level Machine Controller | Coordinates axis commands and machine sequences |
| 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 drive parameterization and troubleshooting |
| Drive-System Documentation | Defines compatible component combinations and setup procedures |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| Siemens 6SN1118-0NK01-0AA1 | 2-Axis Control-Loop Block | Two-axis resolver-feedback speed/torque control |
| Siemens 6SN1118-1NK01-0AA1 | 2-Axis Positioning Control Module | Two-axis resolver-based positioning |
| Siemens 6SN1118-0NJ01-0AA1 | 1-Axis Control-Loop Block | Single-axis resolver-feedback speed/torque control |
| Siemens 6SN1118-1NJ01-0AA1 | 1-Axis Positioning Control Module | Single-axis resolver-based positioning |
| Siemens 6SN1118-0NH01-0AA1 | 2-Axis Closed-Loop Control Module | Two-axis control using compatible sin/cos 1 Vpp encoder feedback |
| Siemens 6SN1114-0NB00-0AA2 | PROFIBUS DP2 Option Module | Adding supported PROFIBUS communication functionality |
Key Advantages
- Provides two independent drive-control channels within one control board.
- Supports resolver-based speed and torque setpoint control.
- Integrates with the SIMODRIVE 611 drive architecture.
- Processes separate feedback signals for the two controlled axes.
- Supports compatible interface expansion for system integration.
- Allows a two-axis board to be used for one-axis applications where the drive configuration permits.
Technical FAQs
How does the 6SN1118-0NK01-0AA1 differ from the 6SN1118-1NK01-0AA1?
The 6SN1118-0NK01-0AA1 is the two-axis resolver version for speed/torque setpoint control. The 6SN1118-1NK01-0AA1 is the corresponding positioning variant. Select the module according to the required control function and the machine’s configured drive architecture.
Can this control-loop block be used for only one axis?
Yes. The SIMODRIVE 611 universal HR two-axis control board can also be used for one-axis applications when paired with a compatible drive configuration. Confirm the power-module arrangement and control configuration before commissioning.
What must match when connecting two resolver-equipped motors?
Both feedback devices, their cables, the assigned control channels, and the motor parameters must correspond to the intended axis configuration. Incorrect channel assignment or incompatible feedback wiring can prevent correct closed-loop operation.
What should be checked if both axes receive commands but one motor does not respond?
Check the affected axis’s setpoint assignment, resolver signal, motor parameters, power-module status, and feedback wiring. Compare the two channels independently to determine whether the problem lies in the command path, feedback path, power stage, or configuration.