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- Siemens
- 6SN1118-0DG23-0AA0
- Control Unit
- Germany
- 330 × 51 × 127 mm
- 1 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Siemens 6SN1118-0DG23-0AA0 is a SIMODRIVE 611-D closed-loop plug-in performance control unit for one axis in a digital drive system. It is intended for feed-drive and main-spindle-drive applications and supports a direct measuring system using voltage signals. The unit is used in compatible CNC machine-tool architectures where the drive must regulate motor operation using the specified feedback configuration.
Within the SIMODRIVE 611-D system, the control unit handles the drive-control functions for its assigned axis. It works with the associated power module, motor, measuring equipment, and numerical control system. The power module supplies the motor’s main electrical power, while the control unit processes the motion requirements and uses the configured feedback signals to regulate drive operation.
The direct measuring system is a defining feature of this model. Rather than relying exclusively on motor-side measurement, the configured arrangement can use position information measured directly at the machine axis. This is useful where the mechanical transmission and positioning requirements make direct axis measurement part of the machine’s control strategy.
The voltage-signal interface also matters when selecting the unit. The connected measuring equipment must provide the signal type supported by the control configuration. Related SIMODRIVE 611-D variants can use different measuring-system interfaces, so similar model numbers alone do not establish interchangeability.
For example, a CNC milling machine may use a direct measuring system to monitor a machine table’s position. The numerical control generates the movement command, the power module supplies the motor, and the control unit regulates the drive using the configured feedback. The mechanical transmission moves the table while the measuring system reports the actual axis position.
The 6SN1118-0DG23-0AA0 is therefore a dedicated component for compatible SIMODRIVE 611-D installations. Its single-axis arrangement, performance closed-loop control, direct measuring system, and voltage-signal interface define its role within the complete drive architecture.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6SN1118-0DG23-0AA0 |
| Product Family | SIMODRIVE 611-D |
| Product Type | Closed-Loop Plug-In Performance Control Unit |
| Axis Configuration | 1 axis |
| Drive Application | Digital feed drives and main-spindle drives |
| Control Category | Performance closed-loop control |
| Direct Measuring System | Supported |
| Measuring-System Signal Type | Voltage signals |
| Drive Architecture | SIMODRIVE 611-D digital drive system |
| Installation Type | Plug-in control unit |
| Dimensions | 330 × 51 × 127 mm |
| Weight | 1 kg |
Product Features
- Single-axis control: Manages one configured axis within a compatible SIMODRIVE 611-D system.
- Performance closed-loop control: Regulates motor operation according to the configured drive-control requirements.
- Direct measuring system support: Accommodates the specified direct measurement arrangement for machine-axis feedback.
- Voltage-signal interface: Matches the measuring-system signal configuration associated with this model.
- Digital-drive integration: Fits into the SIMODRIVE 611-D architecture for compatible feed and spindle drives.
- Feed-drive applications: Supports controlled movement of compatible CNC machine axes.
- Main-spindle applications: Supports the specified spindle-drive applications within the compatible architecture.
- Power-module coordination: Works with the associated power section that supplies motor power.
- Numerical-control integration: Operates as part of a coordinated CNC motion-control system.
- Axis-specific configuration: Requires suitable parameters for the connected motor, measuring equipment, and mechanical transmission.
Working Principle
The 6SN1118-0DG23-0AA0 regulates one axis in a SIMODRIVE 611-D digital drive system. It works with the numerical control, power module, motor, and configured direct measuring system to control the axis according to the commanded movement.
Numerical Control → SIMODRIVE 611-D Control Unit → Power Module → Motor → Mechanical Axis
The numerical control generates the required movement command. The control unit processes the associated drive-control requirements, while the power module supplies the electrical energy needed by the motor.
The motor converts electrical energy into mechanical rotation. In a feed-drive application, this rotation may pass through a ball screw or another transmission mechanism to move a table, carriage, or slide. The direct measuring system measures movement at the machine axis and supplies the configured feedback signals to the drive-control arrangement.
The voltage-signal interface must match the connected measuring equipment. The control response depends on the feedback signals, motor characteristics, mechanical transmission, and drive parameters. A mismatch between the measurement system and the control-unit interface can prevent correct operation even when the module itself is functioning normally.
During commissioning, engineers should verify the measuring-system connections, axis assignment, drive parameters, and response to controlled movement commands. If the reported position differs from actual machine movement, the investigation should include the measuring system, signal wiring, mechanical transmission, and numerical-control configuration.
Role in a SIMODRIVE 611-D Control Architecture
The 6SN1118-0DG23-0AA0 occupies the drive-control position between the numerical control system and the power section. It regulates the assigned axis using the specified direct measuring system and voltage-signal configuration. The power module supplies motor power, and the mechanical transmission converts motor rotation into machine movement.
CNC Numerical Control → SIMODRIVE 611-D Control Unit → Power Module → Drive Motor → Machine Axis
| System Component | Function |
|---|---|
| Siemens 6SN1118-0DG23-0AA0 | Provides single-axis performance closed-loop control with direct measuring system and voltage signals |
| SIMODRIVE 611-D Power Module | Supplies electrical power to the connected motor |
| Digital Feed-Drive Motor | Produces controlled movement for the assigned machine axis |
| Direct Measuring System | Measures machine-axis movement and supplies voltage feedback signals |
| Numerical Control System | Generates motion commands and coordinates machine operation |
| Mechanical Transmission | Transfers motor rotation to the machine axis |
| Drive Power Supply | Supplies electrical energy to the drive system |
| Machine Interlock System | Coordinates permitted operation with machine conditions and protective functions |
Industrial Applications
| Application | Typical Use |
|---|---|
| CNC Milling Machines | Regulating compatible feed axes with direct machine-axis measurement |
| CNC Turning Machines | Supporting controlled feed movement in compatible digital-drive systems |
| Machining Centers | Integrating direct axis feedback into a single-axis drive configuration |
| Grinding Machines | Regulating compatible feed mechanisms using direct measurement |
| Precision Machine Tools | Monitoring actual axis movement through the configured measuring system |
| Automated Production Machinery | Controlling compatible digital-drive axes with direct feedback |
| Machine-Tool Feed Systems | Regulating table, carriage, or slide movement |
| CNC Retrofit Projects | Replacing a matching control unit in an existing SIMODRIVE 611-D installation |
| Industrial Motion Systems | Supporting compatible feed or spindle drives with the specified voltage-signal interface |
| Machine Maintenance | Restoring a matching single-axis drive configuration |
Installation and Maintenance
- Confirm the control-unit reference: Verify that 6SN1118-0DG23-0AA0 matches the required SIMODRIVE 611-D application and single-axis configuration.
- Review the drive architecture: Identify the associated power module, motor, numerical control, and direct measuring system before replacement.
- Isolate the drive system: Disconnect the relevant electrical supplies and follow the machine’s lockout and stored-energy discharge procedures.
- Record the original configuration: Document the axis assignment, parameter settings, module position, and measuring-system connections before removal.
- Inspect the plug-in interface: Check the mounting and electrical interfaces for damage, contamination, or signs of overheating.
- Verify the measuring-system signals: Confirm that the connected measurement equipment matches the voltage-signal interface specified for the control unit.
- Install the control unit: Fit the module into the designated SIMODRIVE 611-D position according to the system installation procedure.
- Check associated connections: Inspect the control, feedback, and power-module interfaces before restoring electrical power.
- Restore drive parameters: Apply the appropriate settings for the installed motor, measuring system, and machine axis.
- Verify axis assignment: Confirm that the numerical-control configuration, control unit, and measuring system correspond to the same axis.
- Test controlled movement: Perform the approved commissioning checks and verify that axis feedback and motor response agree with the configured system.
- Record maintenance results: Document the installed module reference, parameter changes, diagnostic findings, and commissioning results for future maintenance.
Related Components
| Component | Function |
|---|---|
| Siemens 6SN1118-0DG23-0AA0 | Single-axis SIMODRIVE 611-D performance control unit with direct measuring system and voltage signals |
| SIMODRIVE 611-D Power Module | Supplies electrical power to the connected motor |
| Digital Feed-Drive Motor | Produces mechanical movement for the machine axis |
| Direct Measuring System | Measures machine-axis movement and supplies feedback signals |
| Numerical Control System | Generates movement commands and coordinates machine operation |
| Mechanical Feed Transmission | Converts motor rotation into linear or rotary movement |
| SIMODRIVE 611-D Drive System | Provides the modular digital-drive architecture |
| Drive Power Supply | Supplies electrical energy to the drive system |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Siemens 6SN1118-0DG23-0AA0 | SIMODRIVE 611-D Closed-Loop Plug-In Performance Control Unit, 1 Axis | Direct measuring system using voltage signals |
| Siemens 6SN1118-0DG23-0AA1 | SIMODRIVE 611-D Closed-Loop Plug-In Performance Control Unit, 1 Axis | Related direct-measuring configuration using voltage signals |
| Siemens 6SN1118-0DG22-0AA0 | SIMODRIVE 611-D Closed-Loop Plug-In Performance Control Unit, 1 Axis | Direct measuring system using current signals |
| Siemens 6SN1118-0DG21-0AA0 | SIMODRIVE 611-D Closed-Loop Plug-In Control Unit, 1 Axis | Related digital-drive configuration without the direct measuring system specified for the DG23 variant |
| Siemens SIMODRIVE 611-D | Digital Drive System | Compatible CNC feed-drive and main-spindle-drive applications |
| Siemens Digital Feed-Drive Motors | Servo Motors | Controlled movement in compatible machine tools |
Key Advantages
- Provides single-axis performance closed-loop control within a compatible SIMODRIVE 611-D system.
- Supports direct machine-axis measurement through the specified voltage-signal interface.
- Integrates with the corresponding power module and numerical control.
- Supports compatible feed-drive and main-spindle-drive applications.
- Fits CNC drive architectures requiring a dedicated single-axis control unit with direct feedback.
Technical FAQs
What distinguishes the 6SN1118-0DG23-0AA0 from the DG22 variant?
The DG23 configuration uses a direct measuring system with voltage signals, whereas the DG22 variant is associated with current signals. The measuring equipment and signal interface must match the selected control unit.
Why is direct machine-axis measurement useful?
It measures movement at the machine axis rather than relying exclusively on motor-side feedback. This can be useful where the mechanical transmission and positioning requirements call for direct measurement of the actual axis movement.
Does this control unit supply power directly to the motor?
No. The associated SIMODRIVE 611-D power module supplies the motor’s main electrical power. The control unit manages drive regulation using the configured command and feedback signals.
What should be checked if the axis position is reported incorrectly?
Check the direct measuring system, voltage-signal connections, axis assignment, drive parameters, numerical-control configuration, and mechanical transmission. A measurement or wiring fault can affect the reported position even when the control unit is functioning normally.