Description
SIEMENS 6SN1123-1AA00-0DA1 – SIMODRIVE 611 Power Module for Servo/Spindle Axes
The SIEMENS 6SN1123-1AA00-0DA1 is a SIMODRIVE 611-series power module designed to drive servo or spindle motors within a modular 611 rack. From my experience, this series is chosen when you want reliable axis power stages tied to a common DC link, quick serviceability, and tight integration with Siemens control boards. You might notice that it typically pairs with a 6SN1145 infeed/regenerative unit and a 6SN1118 control board, giving you a clean, scalable motion system for machine tools, packaging lines, and retrofit projects where uptime matters.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery time: 1 week for in-stock; no more than one month at the latest
- Payment terms: 50% advance payment; full payment for delivery
- Express delivery methods: fedex, UPS, DHL
Key Features
- SIMODRIVE 611 modular fit – Drops into the 611 rack alongside infeed and control boards for fast scaling and easy service.
- DC-link supplied – Powered from a common DC bus (via 6SN1145 infeed), which typically improves efficiency and braking energy handling.
- High-dynamic axis control – Suited for servo and spindle applications where fast acceleration and precise torque control are required.
- Integrated motor protection – Supports thermistor/PTC monitoring to protect the motor winding in most cases.
- Backplane signal routing – Control and diagnostics are handled through the SIMODRIVE backplane, keeping cabinet wiring straightforward.
- Fieldbus via control unit – PROFIBUS DP or similar fieldbus is provided by the associated control board (e.g., 6SN1118), not the power module itself.
- Service-friendly design – Typically quick to replace, with standardized terminal layouts and clear status indicators.
Technical Specifications
| Brand / Model | SIEMENS SIMODRIVE 611 / 6SN1123-1AA00-0DA1 |
| HS Code | 850440 (Static converters / drive power modules) |
| Power Requirements | Supplied from DC link of 6SN1145 infeed (typically ~600 VDC); control electronics via 24 VDC backplane supply |
| Operating Temperature | 0 to +45 °C (standard cabinet conditions; derating may apply above 40 °C) |
| Signal Input/Output Types | Motor power terminals (U/V/W), motor temperature sensor support (PTC/KTY as applicable), brake control; control signals via SIMODRIVE backplane |
| Communication Interfaces | Via associated control board (e.g., PROFIBUS DP on 6SN1118); internal SIMODRIVE 611 backplane bus |
| Installation Method | Rack-mounted within SIMODRIVE 611 system; vertical orientation in a ventilated control cabinet |
| Dimensions & Weight | Form factor fits SIMODRIVE 611 rack; size and mass depend on current class (this -0DA1 is a higher current class variant). For precise drawing, refer to the Siemens mechanical data for 6SN1123. |
Related or Supporting Products
- 6SN1145-1AA00-0BA1 – Infeed/Regenerative unit providing the common DC link required by 6SN1123 power modules.
- 6SN1118-0DJ23-0AA0 – Control board for SIMODRIVE 611; provides closed-loop control and fieldbus (e.g., PROFIBUS DP).
- 6SN1123-1AA00-0BA1 / -0EA1 – Similar power modules in different current classes; choose based on motor/axis current demand.
- 1FT6 / 1FK7 servo motors – Typical Siemens motors driven by SIMODRIVE 611 power stages.
- Line components (reactors/filters) – 3-phase line reactor and EMC filter sized to the infeed module for compliant cabinet builds.
If you’re replacing an existing unit, matching the current class and firmware compatibility to your 6SN1118 board usually saves commissioning time. Many customers tell us a like-for-like -DA1 swap keeps parameters intact and minimizes downtime.
Installation & Maintenance
- Cabinet & layout – Mount vertically in a SIMODRIVE 611 rack inside a clean, ventilated enclosure (IEC/UL-compliant). Keep intake/exhaust paths unobstructed.
- Wiring – Use the common DC bus from the 6SN1145 infeed; follow Siemens torque specs for U/V/W motor leads and protective earth. Route encoder/signal cables separately from power.
- EMC & grounding – Bond the backplane and panel ground properly; apply shield clamps near entry points to reduce noise.
- Cooling – Provide forced-air circulation; in many cases, a bottom-to-top airflow is recommended. Check for derating with higher ambient temperatures.
- Safety – Lockout/tagout before service. Discharge time for the DC link should be observed; verify DC bus is safe before touching power terminals.
- Routine maintenance – Quarterly dust cleaning, terminal re-torque checks, fan/filter inspection (cabinet), and verify motor thermistor readings.
- Firmware/parameters – Back up drive parameters on the 6SN1118 control board; update firmware only when required for compatibility or fixes.
- Calibration & tuning – Run auto-tuning after motor replacements or mechanical changes; confirm current limits and braking profiles.
Quality & Certifications
- Certifications: CE compliant; UL/cUL recognition typically available for SIMODRIVE 611 modules.
- Manufacturing standards: Produced under ISO 9001 quality systems (Siemens manufacturing).
- Material compliance: RoHS status can vary by production year for legacy 611 units; confirm by serial/lot if needed.
- Warranty: 365 days coverage as stated above.
One thing I appreciate is how predictable commissioning is with the 6SN1123 series—when the infeed and control board are healthy, this power module typically drops in and runs with minimal fuss. If you share your motor typeplate and axis current, we can verify that the -0DA1 rating matches your load so you don’t oversize or run into thermal limits.
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