Siemens Simodrive 611 Infeed Module 6SN1145-1BB00-0EA1
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Part Number: 6SN1145-1BB00-0EA1
The 6SN1145-1BB00-0EA1 is a Supply/Regenerative Feedback Module (E/R Module) belonging to the widely used Siemens Simodrive 611 converter system.
This unit acts as the central power supply for the drive system. It converts the 3-phase AC mains voltage into the DC voltage required by the drive modules (axis inverters). Crucially, it is a regenerative unit, meaning it can feed excess braking energy back into the power grid rather than wasting it as heat, making it highly energy-efficient.
Key Technical Specifications
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Module Type: Infeed / Regenerative Feedback Module (E/R).
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Cooling Method: Internal heat dissipation (Standard cooling).
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Rated Power: 16 kW.
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Input Voltage: 3-Phase AC 380 V to 480 V (+10% / -15%).
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Frequency: 50/60 Hz.
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DC Link Voltage: 600 V DC (Regulated).
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Protection Rating: IP20.
Primary Features & Functions
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Regenerative Feedback: Unlike simple rectifier units, this module allows energy flow in both directions. When motors brake (generating energy), the module synchronizes with the mains frequency and returns current to the grid.
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Regulated DC Link: It maintains a stable DC link voltage (typically 600V) regardless of fluctuations in the mains input voltage. This ensures consistent motor performance even in unstable power environments.
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Integrated Safety & Monitoring: The unit includes built-in monitoring for:
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Phase failure.
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DC link overvoltage/undervoltage.
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Module overtemperature.
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Electronics power supply failure.
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System Compatibility: It is designed to power multiple axis modules (servo drives) connected via the DC link busbar configuration standard in the Simodrive 611 series.
Typical Applications
This module is found in high-precision industrial machinery that requires rapid acceleration and deceleration, such as:
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CNC Machine Tools: Milling machines, lathes, and grinding machines.
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Robotics: Multi-axis industrial robots.
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Packaging and Printing Machinery.
> Important Lifecycle Note
The Simodrive 611 series is considered a Legacy Product (phased out). While these units are still widely used in existing machinery, Siemens has largely transitioned to the SINAMICS S120 system for new applications. The 6SN1145-1BB00-0EA1 is primarily available today as a spare part or refurbished unit for maintenance purposes.
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