The 6ES7521-1FH00-0AA0 is a Siemens SIMATIC S7-1500 SM 521 DI 16x230 V AC BA digital input module with 16 digital inputs arranged in groups of four, 230 V AC input voltage, 20 ms input delay and a separately ordered front connector.
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Official Siemens documentation for the SIMATIC S7-1500 SM 521 DI 16x230 V AC BA digital input module.
Siemens technical datasheet for 6ES7521-1FH00-0AA0, including input voltage, channel count, channel grouping, input delay and connector requirements.
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Technical statements on this product page are based on publicly available official Siemens manufacturer documentation.
Siemens is the brand; SIMATIC S7-1500 is the product family; and 6ES7521-1FH00-0AA0 is the SM 521 DI 16x230 V AC BA digital input module.
SM 521 DI 16x230 V AC BA is SIMATIC S7-1500 SM 521 DI 16x230 V AC BA digital input module with 16 digital inputs arranged in groups of four, 230 V AC input voltage, 20 ms input delay and a separately ordered front connector.
Verify supply, wiring, firmware and engineering compatibility in the official Siemens datasheet.
SM 521 DI 16x230 V AC BA provides the functions listed in the official Siemens datasheet.
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