The Siemens 6SL3520-1XA64-0AF0 is the full-featured AF0 variant of the SINAMICS G115D at 4 kW (5 hp, 10.2 A) in the FSB fan-cooled frame — the most capable configuration at a transitional power level where drives move from fanless FSA/FSB to actively cooled operation. It combines PROFINET/EtherNet/IP, a local remote panel, and daisy-chain power and communication connectors in a single FSB enclosure.

Frequently Asked Questions

Why choose 4 kW AF0 at the fan-cooled entry point?

The 4 kW AF0 sits at a unique position: it is the lowest-power G115D with forced-air cooling and the lowest-power AF0 with daisy-chain capability in the FSB frame. For multi-drive lines mixing 3 kW fanless FSB and 4 kW fan-cooled FSB, the AF0 variants can be daisy-chained together — the power connectors and communication ports are identical across frame sizes. A 4 kW AF0 can feed downstream 3 kW or smaller drives seamlessly.

Does the fan affect the daisy-chain power budget?

The fan draws approximately 30 W from the internal DC bus, which is negligible compared to the 4 kW output rating. The daisy-chain Q4/2 connectors are rated for 25 A continuous — the fan's power consumption does not reduce the available downstream passthrough capacity.