SIEMENS 6SN1145-1BA00-0BA0 Power Supply Module

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The SIEMENS SIMODRIVE 611 infeed and regenerative module supplies the DC link for feed and spindle drives while returning braking energy to the mains. Identified as E/R-Modul INT 16/21 kW, it is used across many machine tools running SINUMERIK controls and provides a dependable power front end for multi-axis motion systems, making it a practical CNC replacement component for maintenance and retrofit needs.

This unit serves as the central infeed for the SIMODRIVE 611 rack, delivering a stable DC link to connected drive modules so axes and spindles can ramp and hold load without nuisance trips. The regenerative function dissipates deceleration energy back to the supply, which helps limit heat build-up inside the cabinet and reduces stress on braking resistors where used in the system.

In typical installations it operates with SIEMENS feed and spindle drive modules in machining centers, lathes, grinders and transfer lines powered by SINUMERIK. The INT 16/21 kW class suits medium to high power machine tools where multiple servo axes and a main spindle share the same DC bus. Field technicians appreciate its straightforward rack integration within the 611 cabinet and the direct busbar and front connector interface that match existing wiring layouts.

This reference is commonly selected when the original infeed shows capacitor wear, infeed bridge faults, overvoltage trips during deceleration or unstable DC link conditions. Replacing a failing infeed with the correct 6SN1145-1BA00-0BA0 restores axis enable, improves start-up reliability and stabilizes the regenerative behavior under heavy braking cycles.

Reference: 6SN1145-1BA00-0BA0

Manufacturer: SIEMENS

Product type: SIMODRIVE 611 infeed and regenerative power supply

Main function: Provides stabilized DC link for SIMODRIVE 611 feed and spindle drives with integrated regeneration, INT 16/21 kW rating

Applications: Multi-axis CNC machine tools using SINUMERIK with SIMODRIVE 611, including machining centers, turning centers and grinding machines, suitable for retrofit and field replacement

Key technical data: Germany-built SIEMENS SIMODRIVE 6SN1145 E/R-Modul INT 16/21 kW, rack-mounted 611 cabinet configuration, designed for use with SIMODRIVE 611 feed and spindle modules, supplied as a replacement unit with warranty and professional packing; fast dispatch depending on availability

In industrial service this module is used to quickly recover machines that trip on DC link faults, mains disturbances or regen overloads during heavy axis braking. Maintenance teams often keep a stocked spare of this reference for fast drop-in replacement during planned shutdowns, minimizing machine downtime and extending the service life of existing SIMODRIVE 611 installations.

Each unit is checked by skilled engineers on dedicated SIEMENS Simodrive 611 test benches or simulators that validate DC link stability, infeed and regen operation, and fault signaling prior to dispatch. The product is packed with anti-static protection and foam-in-place to protect terminals and bus interfaces, and it comes with a warranty.

For legacy machines where SIMODRIVE 611 remains in service, this reference is suitable as an emergency spare to cut unexpected downtime. Cnc-shopping can support sourcing of obsolete parts and may propose repair service or exchange service options when required to keep older SINUMERIK-based equipment running.

Frequently asked questions about 6SN1145-1BA00-0BA0:

Is this a direct drop-in for an existing SIMODRIVE 611 cabinet using the same code ?
Yes. It is the correct replacement for the same reference in SIMODRIVE 611 racks, matching the front connectors and DC bus interface used by the original unit. Always compare the nameplate and cabinet position before installation.

What does INT 16/21 kW indicate for this E/R module ?
It designates the infeed and regenerative power class used in SIMODRIVE 611 systems. The rating covers typical continuous and peak regenerative handling encountered on medium to high power machine tools.

Can it supply both feed axes and a spindle on the same DC link ?
Yes. The infeed provides the shared DC link used by SIMODRIVE 611 feed and spindle modules in a common bus configuration. Ensure the overall load profile stays within the module’s rating.

Which SIEMENS control families are commonly paired with this unit ?
This module is widely used in SIMODRIVE 611 systems running SINUMERIK controls such as 840D and 810D on many machine-tool platforms. Check your machine documentation for the exact pairing and cabinet layout.

When should a maintenance team plan replacement ?
Typical triggers include recurring DC link undervoltage or overvoltage faults, aging capacitors, unusual infeed noise or regen trips during deceleration. Many plants schedule preventive replacement during planned service windows to avoid unplanned downtime.