Brand:Siemens Item No.:6SN1118-1NH01-0AA0 Product Origin:Germany Product Dimensions:330 x 51 x 152 mm Product Weight:0.859 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 6SN1118-1NH01-0AA0 belongs to the SIMODRIVE 611 universal HR control-unit family. It is a two-axis closed-loop control unit for incremental encoder applications and provides positioning functionality.
The control board contains two independent drive controls. In addition to two-axis applications, Siemens documentation allows two-axis control boards to be used for one-axis operation and with appropriate one-axis power modules.
The module is designed for integration into a larger SIMODRIVE 611 system. During operation, it works together with the associated power module, servo motor, encoder, machine controller, and optional communication hardware.
The encoder interface is an important part of the system architecture. The control unit supports compatible incremental encoders using sin/cos 1 Vpp signals, while the broader product family also supports absolute-value EnDat configurations. Consequently, the motor and encoder should always be verified before replacing the control board.
For maintenance work, the exact MLFB is particularly important. The 6SN1118-1NH01-0AA0 should not be confused with the visually similar 6SN1118-0NH01-0AA0, because the former is the positioning variant while the latter is configured for n-set operation.
The 6SN1118-1NH01-0AA0 has a later successor, 6SN1118-1NH01-0AA1. When replacing the older version with the successor, technicians should verify the control-board generation, software requirements, parameter-memory arrangement, and associated power-module configuration before commissioning.
Technical Specifications
Specification
Details
Brand
Siemens
Model
6SN1118-1NH01-0AA0
Product Family
SIMODRIVE 611 universal HR
Product Type
Dual-Axis Control Unit
Control Type
Closed-loop control
Number of Axes
2
Feedback
Incremental encoder
Encoder Signal
sin/cos 1 Vpp
Absolute Encoder
EnDat compatible
Main Function
Positioning
Setpoint
Speed / Rotational Speed / Torque
Expandability
Yes, with appropriate options
Dimensions
330 × 51 × 152 mm
Weight
0.86 kg (1.89 lb)
Recommended Related Models
For Siemens SIMODRIVE 611 universal applications, the following models are closely related:
Siemens 6SN1118-0NH01-0AA0 — Dual-Axis Encoder Control Unit
Siemens 6SN1118-1NH01-0AA1 — Dual-Axis Encoder Positioning Control Loop Module
Siemens 6SN1118-0NH01-0AA1 — Dual-Axis Encoder Control Loop Module
Siemens 6SN1118-0NK01-0AA0 — Dual-Axis Resolver Control Unit
Siemens 6SN1118-1NK01-0AA0 — Dual-Axis Resolver Positioning Control Unit
Siemens 6SN1118-0NJ01-0AA0 — Single-Axis Resolver Control Unit
The appropriate model should be selected according to the required axis count, encoder technology, positioning function, software generation, and associated SIMODRIVE power section.
Popular Related SIMODRIVE Models
Other commonly encountered control and option modules include:
Siemens 6SN1118-1NH01-0AA1 — Dual-Axis Encoder Positioning Control Loop Module
Siemens 6SN1118-0NH01-0AA1 — Dual-Axis Encoder Control Loop Module
Siemens 6SN1118-0NK01-0AA1 — Dual-Axis Resolver Control Loop Module
Siemens 6SN1118-1NK01-0AA1 — Dual-Axis Resolver Positioning Control Loop Module
Siemens 6SN1118-0NJ01-0AA1 — Single-Axis Resolver Control Loop Module
Siemens 6SN1118-1NJ01-0AA1 — Single-Axis Resolver Positioning Control Loop Module
For replacement projects, always compare the complete Siemens MLFB and the existing machine configuration. Encoder type, positioning requirements, software generation, parameter memory, power module, and communication options should all be checked before the replacement unit is commissioned.
Applications in CNC and Servo Motion Control
The Siemens 6SN1118-1NH01-0AA0 is a SIMODRIVE 611 universal HR dual-axis control unit designed for closed-loop motion-control applications using incremental encoder feedback. It provides two independent drive controls and is configured for positioning applications, making it suitable for CNC machine tools and industrial machinery requiring coordinated servo-axis movement.
The control unit supports incremental encoders with sin/cos 1 Vpp signals and can also work with compatible absolute-value EnDat encoder configurations. Its positioning functionality distinguishes it from the corresponding n-set control versions in the 6SN1118 family.
Typical applications include:
CNC machine tools
Servo positioning systems
Machine-tool feed axes
Automated production machinery
Multi-axis industrial motion systems
Precision positioning applications
SIMODRIVE 611 universal HR installations
CNC drive-system refurbishment
Replacement of legacy Siemens motion-control hardware
The 6SN1118-1NH01-0AA0 is particularly relevant for maintenance projects involving existing SIMODRIVE 611 systems where preserving the original control architecture and positioning functionality is important.
Key Advantages for CNC and Motion Applications
Two-axis positioning control
The module incorporates two independent drive controls, allowing it to manage two axes within the corresponding SIMODRIVE system. Siemens also specifies that two-axis control boards can be used for one-axis applications when required by the machine configuration.
Incremental encoder compatibility
The 6SN1118-1NH01-0AA0 is designed for incremental encoder feedback with sin/cos 1 Vpp signals. Compatible absolute-value EnDat encoder configurations are also supported.
Positioning functionality
Unlike the n-set variants, the 1NH01 model is the positioning version of the two-axis encoder control family. This makes it appropriate for machine architectures where the drive control must participate in positioning functions.
Expandable system architecture
The SIMODRIVE 611 universal control unit can be expanded with suitable options, including TERMINALS and PROFIBUS-DP modules, depending on the machine's control architecture.
Suitable for legacy CNC maintenance
For older Siemens CNC systems, retaining the correct control-board family can simplify repair and refurbishment work while avoiding unnecessary changes to the machine's established drive architecture.
Flexible motor integration
The control unit can be used with compatible Siemens motor and encoder combinations. Proper matching of motor, encoder, power module, and parameters remains essential during commissioning.
Technical FAQs
1. What is the Siemens 6SN1118-1NH01-0AA0 used for?
It is a two-axis closed-loop control unit for SIMODRIVE 611 universal HR systems. The 1NH01 version is designed for positioning applications and uses compatible incremental encoder feedback.
2. How many axes can the 6SN1118-1NH01-0AA0 control?
It provides two independent drive controls. A two-axis control board can also be used in a one-axis configuration when the overall SIMODRIVE system permits it.
3. What encoder technology does this control unit support?
The module is designed for incremental encoders with sin/cos 1 Vpp signals. Compatible absolute-value EnDat encoder configurations are also associated with this control-unit family.
4. What is the difference between 6SN1118-1NH01-0AA0 and 6SN1118-0NH01-0AA0?
The 1NH01 version is the positioning variant, while the 0NH01 version is the n-set variant. The distinction is important when replacing a control board because the machine's required control functionality must match the replacement.
5. Is the 6SN1118-1NH01-0AA0 a complete servo drive?
No. It is the control unit within a modular SIMODRIVE 611 system. A complete drive installation also requires compatible power electronics, motors, feedback devices, DC-link components, and machine-control interfaces.
6. Can the module be used with PROFIBUS-DP?
Yes, the SIMODRIVE 611 universal control architecture can be expanded with an appropriate PROFIBUS-DP option module. The exact option should be selected according to the control-board generation and machine configuration.
7. What should be checked before replacing this control unit?
Verify the complete MLFB, control-board version, motor and encoder combination, power module, software/firmware requirements, machine parameters, memory-card configuration, and installed communication options.
8. Why is parameter backup important when replacing the control unit?
The drive parameters define important aspects of motor operation, encoder configuration, positioning behavior, limits, and system communication. Preserving the original parameter data can make commissioning substantially easier after replacement.
9. What can cause an encoder fault after installing a replacement control board?
Possible causes include incorrect encoder wiring, damaged feedback cables, incompatible encoder signals, incorrect axis assignment, unsuitable parameters, or a mismatch between the control unit and the motor/encoder combination.
10. Is 6SN1118-1NH01-0AA1 a replacement for 6SN1118-1NH01-0AA0?
The 6SN1118-1NH01-0AA1 is identified as the successor to the 0AA0 version. However, replacement should still be checked against the machine's software, firmware, power module, parameter memory, and complete system configuration rather than assuming a direct plug-and-play substitution.
