Siemens 6ES7522-5EH00-0AB0 SIMATIC S7-1500 DQ 16x24-48VUC/125VDC/0.5A ST Digital Output PLC I/O Module

The Siemens 6ES7522-5EH00-0AB0 is a SIMATIC S7-1500 digital output module, DQ 16x24...48VUC/125VDC/0.5A ST, with 16 transistor outputs wired in groups of 1 channel and rated for 24 V, 48 V, or 125 V DC as well as 24/48 V AC. It switches 0.5 A per channel and supports safety-related shutdown of load groups up to SIL2 per EN IEC 62061 and Category 3/PL d per EN ISO 13849-1.

Technical Specifications

Selection Notes

ST in the product designation places this module in the Standard performance class, one step above BA (Basic) modules such as a plain DQ 64x24VDC output card, adding per-channel isolation (each of the 16 channels is its own potential-separated group) and the SIL2/Cat.3/PL d safety-related tripping rating from FS02 onward. That per-channel isolation is what lets the module accept mixed voltage classes on different channels within its 24-48 V UC/125 V DC range, unlike a fixed single-voltage output card. Choose it over a BA-class output module when individual channels drive different voltage loads or when a channel's shutdown state needs to reach a safety-rated PL d/SIL2 outcome; where all channels share one supply voltage and no safety rating is needed, a BA-class module costs less rack space per channel.

Applications

Mixed-voltage output wiring where individual 24 V, 48 V, or 125 V DC loads share a rack, including safety-related shutdown paths that need SIL2/PL d certified tripping from the standard control CPU.