ProductPRODUCT
Featured products
Contact Us
- Siemens
- 6SN1118-0DH23-0AA0
- Control Unit
- Germany
- 356 × 76 × 203 mm
- 1 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 4
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Product Overview
The Siemens 6SN1118-0DH23-0AA0 is a two-axis digital closed-loop plug-in control unit for the SIMODRIVE 611-D drive system. It combines Performance closed-loop control with support for a direct measuring system using voltage signals. This configuration is relevant to CNC machine tools where the controller must regulate feed-axis movement using feedback measured directly from the machine axis.
In a machining center, the position of a table or tool slide must follow the programmed trajectory even as cutting forces and mechanical loads change. The 6SN1118-0DH23-0AA0 handles closed-loop control for two digital drive axes, allowing the associated drive system to regulate movement according to the commands and feedback available to the CNC controller.
The direct measuring system is a defining characteristic of this model. Rather than relying exclusively on motor-side feedback, the configured system can evaluate position information from a separate measuring device installed along the machine axis. This arrangement is useful when the application requires the control loop to account for movement at the measured location, including mechanical effects between the motor and the working axis.
The module’s voltage-signal configuration is equally important. SIMODRIVE 611-D control units are available with different measuring-system arrangements, and a model intended for current-signal feedback should not automatically be substituted for this voltage-signal version. The measuring device, feedback wiring, and control-unit interface must match the installed system.
The 6SN1118-0DH23-0AA0 operates as part of a complete SIMODRIVE installation. The control unit works with the associated power module, motor, feedback equipment, and CNC controller; it is not a standalone servo drive. When servicing an existing machine, identifying the exact control-unit variant and its feedback configuration is an essential first step before investigating positioning errors or replacing drive hardware.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6SN1118-0DH23-0AA0 |
| Product Family | SIMODRIVE 611 |
| Drive System | SIMODRIVE 611-D |
| Product Type | Closed-Loop Plug-In Control Unit |
| Control Configuration | Performance Closed-Loop Control |
| Number of Axes | 2 |
| Drive Type | Digital drive |
| Intended Application | Feed-drive control |
| Measuring System | Direct measuring system |
| Measuring-System Signal Type | Voltage signals |
| Control Function | Digital closed-loop drive control |
| Installation Type | Plug-in control unit |
| Typical Application | CNC machine tools and precision feed-axis control |
| Dimensions | 356 × 76 × 203 mm |
| Weight | 1 kg |
Product Features
- Two-axis digital control: Handles two controlled axes within a compatible SIMODRIVE 611-D configuration.
- Performance closed-loop control: Supports feed-drive applications requiring feedback-based motion regulation.
- Direct measuring system support: Accommodates the specified direct position-measuring arrangement.
- Voltage-signal feedback: Matches measuring systems configured for the corresponding voltage-signal interface.
- CNC feed-axis integration: Fits machine-tool applications where programmed axis movement must be regulated against measured position.
- Plug-in control architecture: Integrates with the SIMODRIVE 611-D drive system and its associated power hardware.
- Feedback-based position regulation: Allows the control loop to use direct measuring-system information when configured appropriately.
- Model-specific configuration: Requires the correct combination of drive hardware, measuring equipment, and axis parameters.
Working Principle
The 6SN1118-0DH23-0AA0 participates in the closed-loop control process between the CNC controller, drive power module, motor, and measuring system. The CNC controller supplies motion commands, while the control unit regulates the associated drive axes using the configured feedback signals.
A simplified signal path is:
CNC Controller → 6SN1118-0DH23-0AA0 → SIMODRIVE Power Module → Motor → Machine Axis
Direct Measuring System → Voltage-Signal Feedback Interface → Closed-Loop Control
When a CNC program commands an axis to move, the drive system converts the command into motor movement. A direct measuring device reports the measured position through the configured voltage-signal interface. The control loop evaluates the feedback against the required movement and regulates the drive accordingly.
Consider a CNC milling machine moving a table along a programmed contour. As cutting forces vary, the actual machine movement may deviate from the commanded trajectory. Feedback from the direct measuring system allows the controller to evaluate this deviation and adjust the drive response within the limits of the complete control system.
Direct position measurement is especially relevant when the machine’s mechanical transmission affects the relationship between motor rotation and actual axis movement. A measuring device located at the machine axis can report movement at that location, rather than relying solely on motor-side position information. The benefit depends on the measuring-device installation, mechanical arrangement, and correctly configured control loop.
The voltage-signal specification must be respected during installation and troubleshooting. If the feedback signal type does not match the control unit’s interface, the position information may not be interpreted correctly. Technicians should therefore verify the measuring device, signal wiring, connector assignment, and axis configuration before changing control parameters or replacing other drive components.
Role in a SIMODRIVE 611-D Drive Architecture
The 6SN1118-0DH23-0AA0 serves as the two-axis closed-loop control element within a SIMODRIVE 611-D installation. It coordinates drive regulation using motion commands from the CNC controller and feedback from the configured direct measuring system.
CNC Controller → Digital Control Unit → Drive Power Module → Motor → Feed Axis
Direct Measuring System → Voltage-Signal Feedback → Control Unit
| System Element | Function |
|---|---|
| 6SN1118-0DH23-0AA0 | Performs two-axis Performance closed-loop control with the specified direct measuring system configuration |
| SIMODRIVE 611 Power Module | Supplies electrical power to the associated drive motor |
| Feed-Drive Motor | Produces the mechanical movement required by the machine axis |
| Direct Measuring System | Measures position at the configured machine location |
| CNC Controller | Generates motion commands and coordinates machining operations |
| Machine-Axis Mechanics | Transfer motor movement to the table, slide, or other controlled mechanism |
| Feedback Wiring | Carries voltage-signal measuring information to the control interface |
| Motor Power Cables | Connect the power module to the drive motor |
The control unit must match the installed drive hardware and measuring-system interface. Axis assignments, feedback configuration, and machine parameters should be checked together when commissioning or replacing the module.
Industrial Applications
| Application | Typical Use |
|---|---|
| CNC Milling Machines | Regulating feed-axis movement during cutting and contour machining |
| CNC Machining Centers | Controlling table or tool-slide movement across two configured axes |
| CNC Turning Equipment | Managing compatible feed-axis movements within the machine’s drive architecture |
| Precision Machine Tools | Using direct position feedback for machine-axis control |
| Grinding Machines | Regulating feed movement where accurate positioning is required |
| Special-Purpose Machine Tools | Integrating two-axis digital closed-loop control into dedicated machinery |
| Automated Machining Cells | Coordinating feed-axis motion with CNC program execution |
| Machine Tool Retrofit Projects | Replacing a control unit after verifying feedback and drive compatibility |
| CNC Drive Maintenance | Investigating following errors, feedback faults, and positioning deviations |
| Distributed Machine-Axis Systems | Integrating compatible feed drives into a larger SIMODRIVE 611-D installation |
Installation and Maintenance
- Verify the complete order number: Confirm that the installed or replacement unit is 6SN1118-0DH23-0AA0. Similar SIMODRIVE 611-D modules can differ in measuring-system support and signal type.
- Check the drive configuration: Identify the associated SIMODRIVE 611-D power hardware, motor arrangement, and CNC controller before replacing the control unit.
- Confirm direct measuring-system compatibility: Verify that the machine uses the direct position-measuring arrangement required by this control-unit variant.
- Check voltage-signal feedback: Confirm that the measuring device and feedback interface use the appropriate voltage-signal configuration.
- Inspect feedback cables and connectors: Examine connector seating, shielding, cable routing, and contact condition when investigating position errors or unstable feedback.
- Verify axis assignments: Ensure that the two controlled axes correspond to the intended machine movements and controller configuration.
- Review existing control parameters: Check the machine’s commissioning records and established drive settings before making adjustments to position-control parameters.
- Inspect the drive power module: If an axis fails to move correctly, check the power hardware, motor connections, and associated drive status instead of assuming the control unit is defective.
- Investigate following errors: Compare commanded movement with measured position and available drive diagnostics to distinguish feedback problems from mechanical or drive-related faults.
- Check the mechanical transmission: Inspect relevant couplings, ball screws, linear guides, and other motion components if measured movement does not match the expected machine response.
- Follow electrical safety procedures: Isolate hazardous electrical energy and follow the machine’s approved servicing procedures before removing the plug-in unit or handling drive connections.
- Document replacement and testing: Record the exact order number, measuring-system signal type, axis assignments, parameter changes, and functional test results after servicing.
Compatible System Components
| Component | Function |
|---|---|
| Siemens SIMODRIVE 611-D Drive System | Provides the drive architecture for the control unit |
| Compatible SIMODRIVE 611 Power Module | Supplies power to the associated drive motor |
| Compatible Digital Feed-Drive Motor | Converts electrical drive output into controlled mechanical movement |
| Direct Position Measuring System | Supplies position feedback for the configured control loop |
| Compatible Voltage-Signal Feedback Interface | Carries the measuring-system signals required by this variant |
| CNC Controller | Generates movement commands and coordinates machining sequences |
| Feedback Signal Cables | Carry position-measuring signals to the control unit |
| Motor Power Cables | Connect the drive power module to the motor |
| Machine-Axis Mechanics | Transfer motor movement to the machine table, slide, or other controlled element |
Recommended Related Models
| Model | Product Type | Configuration Consideration |
|---|---|---|
| Siemens 6SN1118-0DH22-0AA0 | SIMODRIVE 611-D Closed-Loop Plug-In Control Unit | Related two-axis configuration with direct measuring system and current signals |
| Siemens 6SN1118-0DH23-0AA1 | SIMODRIVE 611-D Closed-Loop Plug-In Performance Control Unit | Related order-number variant; verify the exact hardware configuration before selection |
| Siemens 6SN1118-0DG23-0AA0 | SIMODRIVE 611-D Closed-Loop Plug-In Control Unit | One-axis version using voltage signals and direct measuring-system support |
| Siemens 6SN1118-0DM23-0AA0 | SIMODRIVE 611-D Closed-Loop Control Unit | Related two-axis direct measuring-system configuration; verify the control-performance class |
| Siemens SIMODRIVE 611-D | Digital Drive System | Drive platform for compatible digital feed-drive applications |
Key Advantages
- Controls two digital axes within a compatible SIMODRIVE 611-D installation.
- Supports Performance closed-loop control for feed-drive applications.
- Accommodates direct position measurement using voltage signals.
- Integrates with compatible SIMODRIVE power hardware and CNC control systems.
- Supports feedback-based regulation of machine-axis movement.
Technical FAQs
What distinguishes the 6SN1118-0DH23-0AA0 from the 6SN1118-0DH22-0AA0?
The key distinction is the direct measuring-system signal type. The 6SN1118-0DH23-0AA0 uses voltage signals, while the 6SN1118-0DH22-0AA0 is configured for current signals. The measuring device and feedback interface must match the selected control unit.
Why would a CNC machine use a direct measuring system instead of relying only on motor feedback?
A direct measuring system measures movement at the configured machine-axis location. This can help the control system account for certain mechanical effects between the motor and the measured axis. Its suitability depends on the machine mechanics, feedback installation, and control configuration.
Can this module regulate two feed axes in the same CNC machine?
Yes. The model is a two-axis control unit for the SIMODRIVE 611-D system. The actual axis assignment and coordinated operation depend on the installed power modules, CNC controller, motors, feedback equipment, and machine parameters.
What should be checked if the axis position is incorrect after installation?
First verify the complete control-unit order number and the voltage-signal feedback configuration. Then check the measuring-system wiring, connector assignments, axis mapping, established parameters, and mechanical transmission. These checks help distinguish a configuration mismatch from a feedback or mechanical fault.