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Main features – Siemens 6SN1118-0BK and 6SN1118-0BJ

⚙️ Type: Closed-loop axis control unit with resolver
🔹 Number of axes: 2 independent or synchronized axes
🔹 Feedback: resolver (closed-loop position and speed control)
🔹 Regulation interface: analog ±10 V
🔹 Compatibility: 6SN1121 / 6SN1122 / 6SN1145 power modules
🔹 Mounting: SIMODRIVE 611 rack with bus connection
🔹 Communication: DNC bus or SINUMERIK interface
🔹 Main codes: 6SN1118-0BK11-0AA0 (2-axis resolver)
🔹 Enhanced revisions: 6SN1118-0BL11-0AA0 / 6SN1118-0BN11-0AA0

The BL and BN revisions improve analog circuit reliability and electromagnetic interference resistance, extending module lifetime even in demanding industrial environments.

Typical applications – Siemens 6SN1118-0BK / 6SN1118-0BJ Closed Loop

💡 These units are used in machines and production lines requiring high-precision position and torque control, including:

• Multi-axis CNC machining centers

• High-speed automatic lathes and milling machines

• Laser, plasma, and waterjet cutting systems

• 5-axis machining and synchronized motion control

• Robotic production and assembly lines

Why Siemens 6SN1118-0BK and 6SN1118-0BJ Closed Loop units are still essential

Despite the introduction of the new SINAMICS S120 platform, many European manufacturing plants continue to rely on SIMODRIVE 611 Closed Loop due to their Siemens-level reliability and robust construction.
These control boards still deliver outstanding dynamic response, precision, and axis synchronization.

🔎 However, since Siemens discontinued original production, finding competent and certified suppliers has become increasingly difficult.
Many non-authorized operators offer used or untested modules without traceability or warranty, exposing plants to repeated failures and downtime.

E-Repair, Approved Partner Siemens – Industry Services, is the only authorized European laboratory able to perform certified repair and refurbishment on the 6SN1118 series.
With original SINUMERIK test benches and the expertise of its technical team, E-Repair ensures “zero-hour” performance, long-term reliability, and real support for production continuity.

E-Repair’s advanced maintenance model combines Siemens competence, proprietary technologies, and a circular approach to give new life to SIMODRIVE 611 modules.

E-Repair services for Siemens 6SN1118-0BK and 6SN1118-0BJ Closed Loop

🔧 Siemens-certified repair with original components
♻️ Full “zero-hour” refurbishment with cleaning, testing, and aesthetic restoration
🧠 Parameter backup and resolver calibration on certified SINUMERIK benches
🧰 On-site and remote assistance (MAAS – Maintenance as a Service)
🔁 Advance replacement with regenerated or new units to minimize downtime
🧼 Technological washing and insulation testing for contaminated units
🛡️ Warranty up to 24 months, extendable on request

👉 View the full product range on the official E-Repair website:
https://www.e-repair.com/products-catalogue/simodrive/?q=6sn1118-0b

Certifications and ESG commitment

E-Repair operates according to the highest international standards:

• ISO 9001 – Quality management

• ISO 14001 – Environmental management

• ISO 14064-1 – CO₂ emissions reduction (Scope 3)

• BS 8001:2017 – Circular economy

• AFNOR XP X30-901:2018 – Sustainable transition management

Certified refurbishment by E-Repair transforms electronic maintenance into a lever for efficiency and sustainability in Industry 5.0.

FAQ – Siemens 6SN1118-0BK and 6SN1118-0BJ Closed Loop

🔹 Can I send my module for a free diagnosis?
Yes, E-Repair provides preliminary analysis and a technical quote at no cost.

🔹 Can I receive a regenerated unit in advance?
Yes, advance replacement is available depending on stock levels.

🔹 Are the modules tested before delivery?
Yes, all units are tested on original Siemens SINUMERIK benches, with a certified test report included.

🟢 Article based on content published on E-Repair’s official social channels.