Field-replaceable cooling fan for SIPLUS S7-1500
The Siemens 6AG1593-0AB00-7AA0 is a SIPLUS S7-1500 cooling fan, 210 mm wide, designed to bolt onto the CPU 1517H-3 (6AG1517-3HP00-4AB0) and CPU 1518HF (6AG1518-4JP00-4AB0). It is the field-replaceable fan unit—no need to swap the whole controller if the fan seizes. Red LED warning indicator switches on at standstill or low fan speed, so you catch a stall before the CPU cooks. Rated for continuous operation from -40°C to 70°C, with conformal coating that shrugs off humidity and mild corrosive gases (ISA Level GX, class 3C4). If your panel lives in a harsh environment, this is the right fan.
What you need to know for installation
Powered from 24 VDC (19.2–27.7 V range), drawing 0.07 A max with a 0.17 A inrush. Push-in terminals with end sleeves; strip to 10 mm. Dimensions are 210 x 119 x 54 mm (WxDxH), IP20. Sits on the front of the CPU, so no extra DIN rail space needed. Conformal coating covers the PCB—handles the board with gloves if you're swapping in the field; no need to bag it from condensation. Power loss is typical 1.7 W. Not much heat to manage, but the fan itself moves air across the CPU heatsink. The digital output OK signal lets the controller know the fan is running—tie it into your diagnostics.
Lifecycle and sourcing reality
Listed as current lifecycle stage—no end-of-life notice, no last-time-buy pressure. You can quote this into a BOM today and count on supply for the next few years. This is a genuine Siemens SIPLUS part, not a third-party substitute. It is rated for -40°C to 70°C.