Siemens 6SN1112-1AC01-0AA1 SIMODRIVE Power Module

The Siemens 6SN1112-1AC01-0AA1 is a power module from the SIMODRIVE 611 drive series. It serves as a regulated DC link supply for feeding up to several axis drive modules. This unit converts three-phase AC mains into a controlled DC output, providing regenerative braking capability. It is intended for use in CNC machine tools and industrial automation systems.

Input and Output Ratings

Input voltage: 380-480V AC, 3-phase, 50/60 Hz. Output DC voltage: adjustable 510-720V DC (depending on mains). Output DC current: 10A continuous, 15A peak (10 seconds). The integrated braking chopper handles up to 5kW of regenerative energy, with external braking resistor connection terminals. The module has a total power rating of approximately 7.5 kW.

Control Features

The power module receives control signals from a separate SIMODRIVE 611 control module (e.g., 6SN1118). It provides status feedback including DC link voltage, temperature, and current monitoring. An internal relay output indicates ready/fault status. The unit uses a 24V DC auxiliary supply for control electronics (consumption 0.3A).

Protection Functions

Built-in protections: under/over voltage, overcurrent, short circuit, overtemperature, and ground fault. The braking chopper is protected against overloading by a thermal model. LEDs on the front panel indicate power-on, DC link active, fault, and braking operation. Resettable electronic fuses reduce downtime.

Mechanical Specification

Dimensions: 300 mm height, 150 mm width, 230 mm depth. Weight 6.5 kg. Mounting is via a rear panel plate with M6 screws, compatible with SIMODRIVE 611 cabinet racks. Cooling is forced-air with an integrated fan (24V DC, replaceable). Airflow direction from bottom to top. Operating temperature: 0°C to 45°C.

Interconnection

Power terminals are screw-type for copper cables up to 10 mm². Control terminals are removable plug-in connectors (12-pin). The module also has a 6-pin interface for connecting to the braking resistor. The DC link busbar allows daisy-chaining to multiple axis modules via pre-assembled bars.

Typical Applications

Used as a central power supply for SIMODRIVE 611-based servo drives in milling, turning, and grinding machines. It can supply up to 3-4 axes of moderate power (e.g., 2-3 kW per axis). Also found in printing presses and handling systems.

Conclusion

The Siemens 6SN1112-1AC01-0AA1 power module delivers a stable DC link for SIMODRIVE 611 axes. With its 10A rating, regenerative braking, and comprehensive protections, it is a compact solution for multi-axis drive systems.