Siemens 6SN1118-0DJ23-0AA1 – High-Performance Digital Control Unit SIMODRIVE 611, 1 Axis with Direct Measuring System SIN/COS 1 Vpp

Technical Description

The Siemens 6SN1118-0DJ23-0AA1 is a high-performance digital control unit from the SIMODRIVE 611 family, designed for the precise management of a single axis equipped with a direct measuring system SIN/COS 1 Vpp.
It belongs to the Digital Control Loop Block High Performance generation, developed for CNC applications that demand high dynamics, positioning accuracy, and full integration with Siemens SINUMERIK systems.

This version includes NC software (required from 06.04.09) and is compatible with SINUMERIK 810D / 840D architectures, providing fast and stable control of speed, torque, and position.
Thanks to its high-speed digital interface, it ensures optimal communication with 6SN1123 / 6SN1145 power modules, improving machining quality and system efficiency.

⚙️ Main Features – Siemens 6SN1118-0DJ23-0AA1

• Type: High-Performance Digital Control Loop Block

• Family: SIMODRIVE 611

• Number of axes: 1

• Measuring system: Direct SIN/COS 1 Vpp – high-resolution incremental feedback

• Control interface: High-speed digital connection

• Compatibility: CNC Siemens SINUMERIK 810D / 840D

• Associated power modules: 6SN1123 / 6SN1145

• NC software: Required from 06.04.09

• Mounting: Plug-in module for SIMODRIVE 611-D rack

• Applications: High-performance Feed Drive axis control and direct positioning

🏭 Typical Applications – Siemens 6SN1118-0DJ23-0AA1

💡 This unit is used in applications requiring high precision, fast dynamic response, and axis synchronization, such as:

• High-speed CNC machining centers (HSC)

• Multi-axis lathes, milling and grinding machines

• CNC cutting, drilling and laser systems

• Automated production lines with digital Feed Drive

• Process automation machines requiring high repeatability

The 6SN1118-0DJ23-0AA1 ensures smooth, precise, and stable motion control, enhancing part quality and overall productivity.

🔍 Why Siemens 6SN1118 Digital Drive Modules Remain Strategic

Even though SIMODRIVE 611 has been replaced by SINAMICS S120, these modules are still widely used across Europe for their reliability, precision, and compatibility with existing Siemens CNC systems.
Industrial facilities continue to rely on them for their robustness and ease of maintenance—key factors in maintaining production continuity and reducing downtime.

⚠️ However, obtaining fully tested units and professional maintenance has become increasingly difficult.
Uncertified suppliers often sell used or untested modules without authentic parts or warranty.

E-Repair, an Approved Partner Siemens – Industry Services, is the only authorized European laboratory certified to repair and refurbish SIMODRIVE 611 modules, including the 6SN1118-0DJ23-0AA1, according to Siemens original specifications.
Each unit is tested on original SINUMERIK test benches, ensuring as-new performance and minimal machine downtime.

E-Repair Services for Siemens 6SN1118-0DJ23-0AA1

🔧 Certified Siemens repair using original components
♻️ Complete refurbishment “zero hours” with full functional and dynamic testing
🧠 Backup and calibration of digital parameters on SINUMERIK test bench
🧰 On-site and remote support (MAAS – Maintenance as a Service)
🔁 Advance replacement with refurbished or new unit (if available)
🧼 Technological cleaning and insulation testing of electronic boards
🛡️ 12-month warranty, extendable to 24 months upon request

👉 Explore the full range on E-Repair’s official website:
https://www.e-repair.com/it/catalogo-prodotti/simodrive/?q=6sn1118-0dj

Certifications and ESG Commitment

E-Repair operates in compliance with international quality and sustainability standards:

• ISO 9001 – Quality management

• ISO 14001 – Environmental management

• ISO 14064-1 – CO₂ reduction and Scope 3 reporting

• BS 8001:2017 – Circular Economy standard

• AFNOR XP X30-901:2018 – Responsible sustainability management

Refurbishing a Siemens module like the 6SN1118-0DJ23-0AA1 extends its lifecycle and reduces electronic waste, supporting ESG objectives and sustainable industrial supply chains.

❓ FAQ – Siemens 6SN1118-0DJ23-0AA1

Can I send my module for diagnosis and repair?
✔️ Yes. E-Repair provides a free technical evaluation with initial testing.

Is an advance replacement unit available?
✔️ Yes, if stock is available in E-Repair’s warehouse.

Is each unit tested before delivery?
✔️ Yes. Every module is tested on an original Siemens SINUMERIK bench and shipped with a test certificate.