Siemens 6dd1682-0bc4 Rack

Siemens 6DD1682-0BC4 SR12.4 SIMADYN D subrack is a 12-slot backplane designed to host SIMADYN D modules (for example the A200-G1) in 115/230 V AC installations without an integrated fan. The rack powers through an SP23.5 supply that plugs into the backplane and provides the L‑bus and C‑bus rails for module communication, with a line filter to limit EMI per class A requirements. It accommodates SIMADYN D modules in the 233.4 × 220 mm format and includes a compartment for a back-up battery to preserve memory. Front-panel indicators include a green LED for error-free operation and a red LED for fault conditions, and a reset function is accessible for cold restarts via a dedicated connector. Power input is available at the X1 terminal, an external back-up battery can be connected at X3, and X4 provides a reset/jumper option for service. As part of the SR12.x family, the SR12.4 offers a compact 12-slot rack for Siemens SIMADYN D control hardware, aligning with automation applications that need reliable mid-size backplanes for servo drives and related modules.