⚙️ The roots of the power modules: 6SN1123 / 6SN1124 / 6SN1125

The SIMODRIVE 611 power modules derive from three fundamental roots:

🔹 6SN1123 – Single-Axis Power Module

Compact modules designed to drive a single motor.
Main features:

• Power control for brushless motors and spindles

• Wide range of amperages

• Direct connection to Closed-Loop 6SN1118

• Used for X / Y / Z / rotary axes on SINUMERIK CNC systems

💡 Ideal for compact machining centers or independent axes with dedicated regulation.

🔗 Full 6SN1123 range
https://www.e-repair.com/products-catalogue/simodrive/?q=6sn1123

🔹 6SN1124 – Double-Axis Power Module

Modules that manage two axes within a single housing, optimizing space and power.

Features:

• 2 independent channels

• Synchronized management for symmetric or parallel axes

• Reduced cabling and panel footprint

• Compatibility with linear and synchronous motors

💡 Perfect for multi-axis machines and compact layouts.

🔗 Full 6SN1124 range
https://www.e-repair.com/products-catalogue/simodrive/?q=6sn1124

🔹 6SN1125 – Spindle Power Module

Modules designed to drive high-power spindle motors.

Features:

• High speed, up to several thousand rpm

• Stable and high power output

• Dynamic load management

• Single- and multi-spindle configurations

💡 Used in milling, turning and grinding applications where spindle performance is critical.

🔗 Full 6SN1125 range
https://www.e-repair.com/products-catalogue/simodrive/?q=6sn1125

🏭 Industrial applications of Siemens Simodrive Power Modules

SIMODRIVE 611 power modules are found in:

• CNC machining centers (SINUMERIK 810D, 840D, 840Di)

• Multi-axis machine tools

• Lathes, milling machines, grinding machines

• Automated production lines

• Translators, Cartesian robots, pick-and-place systems

• Automotive, aerospace and precision engineering industries

Their modularity allows flexible configuration of axes and spindles by replacing only the required module.

🔧 E-Repair services for SIMODRIVE 611 Power Modules

E-Repair is an Approved Partner Siemens – Industry Services, the only European laboratory authorized for the repair and refurbishment of SIMODRIVE 611.

Dedicated services include:

🧩 Certified Siemens repair
with advanced diagnostics on original SINUMERIK test benches.

🔁 Refurbishment restored to “zero hours”
replacement of wear components, full testing and professional cleaning.

⚡ Advance replacement with refurbished or new modules
reducing downtime in case of failure.

🧠 Parameter backup and dynamic motor testing
essential for synchronized axes or high-speed spindles.

🌐 On-site and remote assistance (MAAS – Maintenance as a Service)
with certified technicians.

🧽 Technological cleaning, electrical and thermal testing

🔒 Standard E-Repair warranty: 12 months in accordance with Siemens standards

Extension: for some products, it can be extended to 24 months upon request

All activities are carried out in accordance with:

• BS 8001:2017

• AFNOR XP X30-901:2018

• ISO 14064-1 (carbon footprint)

• ISO 27001 (cybersecurity)

SIMODRIVE 611 Power Module: reliability, operational continuity and certified refurbishment

Thanks to their mechanical robustness, modular architecture and compatibility with the SINUMERIK platform, SIMODRIVE 611 Power Modules remain one of the most reliable and long-lasting drive systems in the European industrial sector.

Refurbishment and repair according to Siemens standards enable companies to extend machine lifecycle, reduce downtime costs and maintain continuity even on older yet strategic production assets.

As the only Approved Partner Siemens in Europe, E-Repair provides certified, safe and fully compliant technical support — from diagnostics to final testing, up to immediate supply of refurbished modules to prevent production stops.

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