Detailed Description 6SN1145-1AA01-0AA1 belongs to Siemens SIMODRIVE 611 drive system, the unregulated UI infeed unit. It converts three-phase AC mains into DC bus voltage for all connected servo axis modules and spindle modules within the 611 rack. Rated continuous power 10kW, peak power up to 25kW. Input voltage three-phase AC380–480V ±10%. This unregulated infeed does not have regenerative energy feedback function, excess braking energy must be consumed via external braking resistor.

The module integrates main contactor with break contact, circuit detection circuit and status LED indicators for power, ready and fault alarm for fast on-site troubleshooting. It supports internal or external cooling installation. It communicates with SIMODRIVE 611 control boards via rack backplane bus, sends ready signal and fault alarm to CNC system. It can be matched with single-axis and dual-axis power modules for different axis configuration of machine tools.

Full protection functions include overvoltage, undervoltage, overcurrent, overload, module overtemperature, short-circuit and earth fault protection. IP20 protection grade for cabinet installation, operating temperature range 0~55℃.

6SN1145-1AA01-0AA1 is discontinued legacy Siemens CNC spare part. Many old CNC machine tools still run SIMODRIVE 611 systems. When the original infeed module fails, replacing it with identical 6SN1145-1AA01-0AA1 can reuse existing 611 rack, servo power modules, spindle module, DC bus wiring and original CNC program. Technicians install the module on rack, check contactor action, verify DC bus and backplane communication, so the whole CNC servo drive system resumes operation and reduces downtime.

Before shipment, every 6SN1145-1AA01-0AA1 undergoes comprehensive functional inspection including power-on self-test, main contactor test, DC link output test, backplane bus communication verification and protection function simulation. All products come with 12-month warranty. Our automation technical team provides remote support for rack installation, wiring guidance, fault code diagnosis and drive system commissioning. Fast global shipping available for urgent maintenance orders.

For automation maintenance engineers and system integrators, 6SN1145-1AA01-0AA1 is reliable spare infeed power module for legacy Siemens SIMODRIVE 611 CNC systems. It restores DC bus power supply for servo and spindle axes, extends service life of machine tool assets and avoids high-cost whole drive system renovation.