Description
Siemens 6SN1118-0DG21-0AA1 – SIMODRIVE 611-D Closed-Loop Performance Control Unit
Part Number: 6SN1118-0DG21-0AA1
Manufacturer: Siemens
Product Family: SIMODRIVE 611-D
Module Type: Closed-Loop Plug-in Performance Control Unit (1 Axis)
Product Description
The Siemens 6SN1118-0DG21-0AA1 is a SIMODRIVE 611-D closed-loop plug-in performance control unit designed for one-axis digital servo and main spindle drive control. It provides high-speed, closed-loop motion control for feed drives and main spindle drives in SINUMERIK 810D and SINUMERIK 840D CNC systems. This control unit is intended for applications without a direct measuring system, making it suitable for encoder-based servo control in SIMODRIVE 611-D drive systems.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Siemens |
| Part Number | 6SN1118-0DG21-0AA1 |
| Product Family | SIMODRIVE 611-D |
| Module Type | Closed-Loop Performance Control Unit |
| Number of Axes | 1 Axis |
| Drive Type | Digital Servo & Main Spindle Drives |
| Measuring System | Without Direct Measuring System |
| Feedback | Motor encoder feedback |
| Application | Feed Drives & Main Spindle Drives |
| Approximate Weight | 0.45–0.52 kg |
Key Features
- Single-axis closed-loop performance control
- Designed for SIMODRIVE 611-D digital drive systems
- Supports feed axis and main spindle applications
- Intended for systems without direct measuring system (1 Vpp scale)
- High-speed digital servo processing for precise positioning and speed control
- Plug-in design for easy installation and maintenance
- Reliable operation in demanding CNC machine tool environments
Compatible Systems
- Siemens SINUMERIK 810D
- Siemens SINUMERIK 840D
- SIMODRIVE 611-D Digital Drive Systems
- Feed Servo Drives
- Main Spindle Drives
Typical Applications
- CNC Lathes
- CNC Milling Machines
- Vertical and Horizontal Machining Centers
- Grinding Machines
- Gear Cutting Machines
- Industrial Motion Control Systems





