⚙️ Technical Root: 6SN1145 – Power Supply Modules & HFD Filters

The 6SN1145 root includes two types of units:

🔹 1. Power Supply Module (PSM) – Power Modules

These modules convert the mains power into a stable DC bus used by SIMODRIVE drives to control:

• brushless motors

• synchronous motors

• spindle motors

• linear and rotary axes

Main functions of 6SN1145 PSM units

• DC bus voltage generation and regulation

• Overvoltage and short-circuit protection

• Energy recovery management (braking)

• Transient stabilization

• Continuous power supply for Power Modules 6SN1123–1124–1125

They are the electrical heart of the entire DRIVE system.

🔗 Full 6SN1145 Range (Power Supply + Filters) – E-Repair Catalogue
https://www.e-repair.com/products-catalogue/simodrive/?q=6sn1145

🔹 2. HFD Filters – Harmonic Filters & Noise Suppression Units

HFD (Harmonic Filter Devices) derive from the same technical root but perform a complementary function:

HFD functions

• Reduction of mains harmonics

• Electromagnetic protection (EMC)

• Suppression of conducted noise

• Power factor improvement

• Line stability under variable loads

They are essential in systems featuring:

• multiple parallel axes

• long cable runs

• high-precision machinery

• frequent load variations

🏭 Typical Industrial Applications of 6SN1145

6SN1145 Power Supply Modules and HFD filters are used in:

• multi-axis CNC machining centers (SINUMERIK 840D / 810D)

• milling and turning machines

• robotic and pick-and-place lines

• automotive, aerospace, and precision-engineering plants

• laser cutting, waterjet, and grinding systems

• high-dynamic applications with synchronized axes

Where stable, clean, and protected power is required, 6SN1145 is indispensable.

🔧 E-Repair Services for SIMODRIVE 611 6SN1145 (PSM & HFD)

As an Approved Partner Siemens – Industry Services, E-Repair is the only authorized European laboratory for the repair and refurbishment of the entire SIMODRIVE 611 range, including PSM units and HFD filters.

Dedicated services

🧩 Siemens-certified repair

Advanced diagnostics, electrical parameter inspection, load and stability testing.

🔁 Zero-hour refurbishment

Replacement of critical components, professional cleaning, restoration of original performance.

⚡ Immediate replacement with refurbished or new module

Minimizes machine downtime.

🧪 Electrical and thermal testing on original SINUMERIK benches

Full simulation of customer operating conditions.

🌐 On-site and remote support (MAAS)

Siemens-certified technical assistance for configuration and diagnostics.

🔒 Standard E-Repair warranty = 12 months

Extendable up to 24 months on request, if technically applicable.

🌱 Quality, Sustainability & Cybersecurity

All E-Repair processes comply with:

• BS 8001:2017 – Circular Economy

• AFNOR XP X30-901:2018 – Circular Models

• ISO 14064-1 – Carbon Footprint

• ISO 27001 – Industrial Cybersecurity

Refurbishing PSM units and HFD filters significantly reduces CO₂ emissions compared to replacing components with new ones.

SIMODRIVE 611 6SN1145 Power Supply: Stable Power, Advanced Protection, Continuous Productivity

Thanks to their robustness, modular architecture, and compatibility with SINUMERIK platforms, SIMODRIVE 611 Power Supply Modules and HFD filters deliver high reliability and long service life to industrial systems.

E-Repair ensures Siemens-certified refurbishment, advanced testing, and immediate module availability to prevent downtime and guarantee continuous operation.

🟢 Article developed from technical content provided by E-Repair official channels.