Siemens 6SA8252-0AC70 Parallel Operation Board

Description

Siemens 6SA8252-0AC70 Parallel Operation Board is an industrial automation control component categorized as an integrated circuit (IC) power module, designed for use with SINAMICS DC MASTER systems. As a key component for parallel and redundant configurations, it enables users to combine multiple compatible devices to expand system power output. For parallel operation, it requires devices with identical rated DC current, with maximum allowable output current calculated as Imax = n × IN(SINAMICS DC MASTER), where n is the number of connected devices. Up to 6 devices can be parallelized when auxiliary conditions are met, including equipping the CUD with hardware and connectors for trigger pulse transmission and high-level communication, and using independent phase-shifting reactors with a minimum 2% impedance and recommended 5% or better tolerance to ensure even current distribution. The board also supports redundant (n+m) operation: if one device fails, remaining devices automatically maintain uninterrupted system operation, with both armature and excitation circuits capable of redundant function after proper configuration and interconnection. This component is engineered for industrial automation applications, providing scalable power and reliable fault tolerance for heavy-duty control systems.