An AS-Interface trunk is planned around its node budget — and when a heavy section takes one of those nodes, the drive behind the address should not force a redesign. The 2XH65-5AA0 build of the SINAMICS G115D is the 5.5 kW node: 13.2 A rated in LO duty and 26.4 A in HO, taking mains through its gland while the trunk carries only the control conversation.

How many heavy nodes can an AS-i line realistically carry?

As many as the address and cycle budget allows — the power side never enters the calculation, because the trunk is not the motor supply. Each 5.5 kW node draws its 380-480 V feed through its own gland from the distribution the plant already runs, so the AS-i planning stays a signalling exercise: addresses, cycle time and cable length. That separation is what lets a mixed line hold 0.37 kW gates and 5.5 kW transports on one trunk without electrical rework.

What does the fan-cooled FSC housing change about mounting?

Clearance and one service habit. The 425 x 240 x 169 mm housing needs its fan intake kept clear — a real constraint on frames mounted low or in dust-heavy zones — and in exchange the section gets a 5.5 kW rating in a sealed IP65/66 / UL Type 4X enclosure with no cabinet. The C2 filter and 24 V PSU are integrated, and the H6 interconnect keeps I/O and communication on M12 connectors for the plug-in maintenance style the rest of the line uses.