Siemens 6ES7522-1BH01-0AB0 SIMATIC S7-1500 DQ16x24VDC/0.5A HF Digital Output Module

The Siemens 6ES7522-1BH01-0AB0 is a SIMATIC S7-1500 digital output module type DQ16x24VDC/0.5A HF, providing 16 transistor outputs in two groups of 8 with 4 A per group and single-channel diagnostics. It supports safety-oriented shutdown of load groups up to SIL2 per IEC 62061:2021 and Category 3/PL d per ISO 13849-1:2015. A front connector must be ordered separately.

Technical Specifications

Selection Notes

The 4 A per-group limit across two groups of 8 channels means all 16 outputs cannot run at their full 0.5 A rating simultaneously without exceeding the group budget, which matters when sizing a load list rather than just checking the per-channel current. Support for safety-oriented shutdown up to SIL2 and Category 3/PL d lets this standard output module also perform the de-energizing side of a safety function, avoiding a dedicated F-DQ module where the input side of the safety loop is already handled elsewhere. The 100 Hz switching frequency on resistive loads and single-channel diagnostics suit applications that need to know which individual output failed, not just that the module has a fault.

Applications

Driving 24 V DC solenoids, contactor coils, and indicator loads from an S7-1500 rack where per-channel diagnostics and a SIL2/PL d-capable safety shutdown path are required alongside standard discrete control.