SIEMENS 6SN1145-1BA02-0CA0 Product Description

The SIEMENS 6SN1145-1BA02-0CA0 is a SIMODRIVE 611 infeed regenerative module for classic CNC servo drive systems. This infeed regenerative module converts three-phase AC power into stabilized DC bus voltage and feeds motor braking energy back to the power grid instead of consuming energy via braking resistors. This infeed regenerative module features 36/47kW rated power, internal air cooling and integrated main contactor, specially designed to supply shared DC power for multiple SIMODRIVE 611 servo axis modules. This infeed regenerative module provides constant DC link voltage under dynamic load changes for machine tool high-speed machining and positioning tasks.

This SIEMENS power supply unit works as the central power source for multi-axis servo drives on legacy CNC machines. Its robust power conversion assembly handles AC rectification, DC voltage stabilization and bidirectional energy regeneration between grid and DC bus. The power conversion assembly adopts high-power semiconductor components to realize fast energy recycling during rapid deceleration of spindle and feed axes. The power conversion assembly includes comprehensive hardware protection circuits to respond quickly to overvoltage, undervoltage and overcurrent faults. The thermal design of the power conversion assembly controls temperature rise during continuous heavy-load cutting cycles for long-term stable operation.

The module connects directly with SIMODRIVE 611 axis modules through the internal DC bus and signal backplane. Reliable dc bus power supply delivers stable regulated DC voltage to all connected servo and spindle power modules. Stable dc bus power supply suppresses voltage spikes caused by frequent acceleration and deceleration in high dynamic machining. Controlled dc bus power supply ensures consistent torque output for each servo axis even when multiple axes operate simultaneously. Durable dc bus power supply reduces energy waste and heat generation compared with conventional non-regenerative infeed units.

The SIEMENS 6SN1145-1BA02-0CA0 is an obsolete discontinued Siemens product, now mainly available as spare parts for maintenance and overhaul of existing CNC machine tools. It adopts rack-mounted cabinet structure with internal cooling fan and built-in fault diagnostic LEDs for quick status check. It can cooperate with 611 power modules for feed axes and spindle drives to form a complete SIMODRIVE 611 CNC drive system. It follows Siemens industrial standards and is widely used in machining centers, lathes, grinders and other metal-cutting machine tools. As a core power component of the classic SIMODRIVE 611 series, this SIEMENS infeed regenerative module remains essential spare inventory to maintain production availability of legacy CNC equipment worldwide.