The SIEMENS 6ES7321-1BL00-0AA0 is a SIMATIC S7-300 SM 321 digital input module engineered for precise signal acquisition and reliable system integration in industrial automation. It operates with a rated load voltage of 24 V DC, supporting an allowable range from 20.4 V to 28.8 V, ensuring stable performance under varying supply conditions. The module draws a maximum of 15 mA from the 5 V DC backplane bus and features a total power loss of 6.5 W for efficient energy management. Input signals function with a DC voltage type, where logical “0” is defined between –30 V and +5 V and logical “1” between 13 V and 30 V, with a typical signal current of 7 mA in the “1” state. The SIEMENS 6ES7321-1BL00-0AA0 could potentially be applied across North America, Europe, Asia, and worldwide in automation systems requiring dependable digital input processing, signal accuracy, and system stability.
