Siemens 6SN1118-0NK01-0AA1 Dual-Axis Control Loop Module
Siemens 6SN1118-0NK01-0AA1 Dual-Axis Control Loop Module
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Brand:Siemens Item No.:6SN1118-0NK01-0AA1 Product Origin:Germany Product Dimensions:356 x 51 x 178 mm Product Weight:0.8 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 6SN1118-0NK01-0AA1 is part of the SIMODRIVE 611 universal HRS control-board family. Siemens documentation identifies this specific MLFB as a 2-axis closed-loop module for resolvers, n-set.
The HRS control board contains two independent drive controls. Although primarily intended for two-axis operation, the architecture also permits one-axis applications, providing additional flexibility when maintaining different machine configurations.
The module is designed to work as part of a modular SIMODRIVE 611 system rather than as a standalone PLC or servo controller. During installation, the control module must be matched with the associated power module, motor, feedback device, machine controller, and communication options.
For replacement projects, the full MLFB should always be checked. In particular, the 6SN1118-0NK01-0AA1 should not be confused with the positioning version 6SN1118-1NK01-0AA1. The two models belong to the same general control-board family but have different functional configurations.
The module can also be paired with suitable SIMODRIVE option modules, including terminal and PROFIBUS-DP variants, when required by the machine's control architecture.
Technical Specifications
Specification
Details
Brand
Siemens
Model
6SN1118-0NK01-0AA1
Product Family
SIMODRIVE 611 universal HRS
Product Type
Dual-Axis Control Loop Module
Control Type
Closed-loop control
Number of Axes
2
Feedback
Resolver
Setpoint Type
Speed / Torque
Control Mode
n-set
Single-Axis Operation
Supported
Expandable
Yes, with appropriate options
Typical Application
CNC and industrial motion control
Dimensions
356 × 51 × 178 mm
Weight
0.80 kg (1.76 lb)
Recommended Related Models
For SIMODRIVE 611 universal HRS applications, the following models are closely related:
Siemens 6SN1118-0NH01-0AA1 — 2-axis encoder closed-loop control module
Siemens 6SN1118-1NH01-0AA1 — 2-axis encoder positioning control module
Siemens 6SN1118-1NK01-0AA1 — 2-axis resolver positioning control module
Siemens 6SN1118-0NJ01-0AA1 — 1-axis resolver closed-loop control module
Siemens 6SN1118-1NJ01-0AA1 — 1-axis resolver positioning control module
When purchasing or replacing a 6SN1118-0NK01-0AA1, the complete Siemens order number should be verified against the existing control board. The hardware generation, software version, resolver configuration, associated power module, and installed options can all affect system compatibility.
Applications in SIMODRIVE Motion Control Systems
The Siemens 6SN1118-0NK01-0AA1 is a SIMODRIVE 611 universal HRS dual-axis control loop module designed for closed-loop drive applications using resolver feedback. It provides two independent drive-control channels and is primarily intended for speed/torque setpoint operation within the SIMODRIVE 611 architecture.
The module can also be used in a single-axis application when the system configuration requires only one active drive axis. This flexibility makes it useful for CNC machines, industrial production equipment, machine-tool retrofits, and maintenance of established Siemens motion-control systems.
Typical applications include:
CNC machine tools
Machine-tool feed axes
Servo motor control
Two-axis industrial motion systems
Resolver-based closed-loop drives
Speed and torque control applications
SIMODRIVE 611 universal HRS installations
Industrial equipment modernization
Replacement and maintenance of legacy Siemens drive systems
The 6SN1118-0NK01-0AA1 belongs to the HRS generation of SIMODRIVE 611 universal control boards and is associated with systems using software version 8.3 and later. Its two control channels operate independently, allowing two drive axes to be managed from one control bo
Main Benefits for Industrial Drive Applications
Two-axis closed-loop control
The 6SN1118-0NK01-0AA1 incorporates two independent drive controls. A two-axis control board can also be configured for one-axis operation when required by the machine architecture.
Resolver feedback support
The module is specifically designed for resolver-based feedback. This allows compatible motors to provide feedback information required for closed-loop speed and torque regulation.
Speed and torque setpoint operation
The 0NK01 version is the n-set variant, making it suitable for applications where the higher-level control system provides the required setpoints.
Expandable control architecture
The SIMODRIVE 611 universal HRS control board can be combined with appropriate option modules, including terminal and PROFIBUS-DP options, depending on the system configuration.
Useful for legacy equipment maintenance
For older CNC and industrial machines, replacing the control loop module with the correct HRS version can help maintain the original drive architecture without redesigning the complete motion-control system.
Independent axis operation
Because the two drive controls operate independently, each axis can be configured according to its associated motor, feedback system, and drive requirements.
Technical FAQs
1. What is the Siemens 6SN1118-0NK01-0AA1 used for?
It is a two-axis closed-loop control module for the SIMODRIVE 611 universal HRS system. It is designed for resolver-based drive applications and supports speed/torque setpoint control.
2. How many axes does the 6SN1118-0NK01-0AA1 control?
It is a two-axis control module with two independent drive-control channels. Siemens documentation also allows two-axis control boards to be used for single-axis applications.
3. What type of motor feedback does this module use?
The 0NK01 version is designed for resolver feedback. The resolver provides the feedback information required for closed-loop motor regulation.
4. What is the difference between 6SN1118-0NK01-0AA0 and 6SN1118-0NK01-0AA1?
Both belong to the SIMODRIVE 611 family and provide two-axis resolver control, but the -0AA1 version belongs to the later HRS generation. The 0AA1 version should therefore be evaluated according to the software, firmware, power-module, and machine configuration rather than assuming every older installation is automatically interchangeable.
5. Can the 6SN1118-0NK01-0AA1 operate only one axis?
Yes. Although it is a two-axis control board, Siemens documentation specifies that two-axis control boards can also be used for one-axis applications.
6. Is the 6SN1118-0NK01-0AA1 a complete drive?
No. It is a control loop module within the SIMODRIVE 611 system. The complete drive arrangement also requires compatible power electronics, motors, resolver feedback, DC-link and auxiliary connections, and the appropriate machine-control configuration.
7. Can the module be connected to PROFIBUS-DP?
PROFIBUS-DP functionality can be provided through the appropriate SIMODRIVE option module. The exact option and system configuration should be checked before installation.
8. What should be checked when replacing an older 6SN1118-0NK01 control module?
Check the complete MLFB, control-board generation, software/firmware requirements, power-module type, motor feedback, machine parameters, and installed option modules. Particular attention should be paid to the difference between the 0AA0 and 0AA1 revisions.
9. What can cause resolver feedback problems after replacement?
Incorrect resolver wiring, incompatible motor feedback, damaged feedback cables, incorrect axis assignment, or unsuitable drive parameters can cause feedback-related problems. The resolver wiring and original machine parameters should be checked before changing control settings.
10. Is parameter backup recommended before replacing this module?
Yes. A parameter backup or documented record of the existing machine configuration is strongly recommended. This can simplify commissioning and help preserve the original motor, axis, and communication settings after the replacement.
