Product Overview
The Siemens 6DD1682-0BE0 is a high-capacity 24-slot card rack (subrack) from the Siemens SIMADYN D family, purpose-built for demanding industrial automation and drive control applications . Officially designated as the SR24.2, this robust chassis provides the physical foundation and backplane connectivity for up to 24 SIMADYN D function modules, including CPU, I/O, and communication boards . The Siemens 6DD1682-0BE0 distinguishes itself from its counterparts by operating on a 24 V DC power supply and utilizing a natural convection cooling design, setting it apart from the fan-equipped SR24.1 variant . This strategic design choice makes the Siemens 6DD1682-0BE0 an ideal solution for installations where space and noise are critical considerations, while still delivering the expansive capacity demanded by large-scale control systems.
At the heart of the Siemens 6DD1682-0BE0 lies a sophisticated multilayer backplane that integrates both the local bus (L-Bus) and the continuous communications bus (C-Bus) . This integrated architecture ensures deterministic, high-speed data exchange between all installed modules, achieving microsecond-level synchronization essential for real-time drive control and complex process automation. The Siemens 6DD1682-0BE0 serves as the structural backbone in applications ranging from steel rolling mills to mine hoist control, offering a scalable, high-density platform where reliability is paramount. As a legacy product, the Siemens 6DD1682-0BE0 remains a critical spare part for maintaining the operational integrity of existing SIMADYN D installations, helping facilities avoid costly system overhauls.
Technical Specifications
| Parameter Name | Value |
|---|---|
| Product Model | 6DD1682-0BE0 (SR24.2) |
| Manufacturer | Siemens |
| Product Type | Card Rack / Subrack |
| Series | SIMADYN D |
| Slot Count | 24 universal slots |
| Bus System | Integrated L-Bus (local) and C-Bus (communications) backplane |
| Input Voltage | 24 V DC |
| External Fuse Rating | 32 A max., I²t = 10 A²s, Is = 64 A (inrush peak) |
| Cooling Method | Natural convection (fanless) |
| Supported Modules | All standard SIMADYN D modules (4HP/6HP heights) |
| Operating Temperature | 0°C to +60°C (depending on load and cabinet cooling) |
| Protection Rating | IP20 (installation in control cabinet required) |
| Mounting Width | 19-inch standard (approx. 482 mm) |
| Empty Slot Covers | SR81, SR82, SR83 (required for empty slots) |
| Dimensions (W x H x D) | Approx. 482 mm x 530 mm x depth (cabinet-dependent) |
| Weight (empty) | Approx. 15–20 kg |
| Lifecycle Status | Discontinued (Legacy Spare) |
Main Features and Advantages
High-density 24-slot architecture: The Siemens 6DD1682-0BE0 offers an expansive 24-slot capacity, enabling the consolidation of multiple CPUs, extensive I/O channels, and diverse communication modules into a single, organized chassis . This high-density integration minimizes the footprint of control systems, reducing cabinet space requirements and simplifying cabling in large-scale applications, making the Siemens 6DD1682-0BE0 the preferred solution for complex system architectures.
Integrated high-speed backplane bus: At the core of the Siemens 6DD1682-0BE0 is a precision-engineered backplane featuring both L-Bus and C-Bus . This dual-bus architecture ensures reliable, synchronized data exchange across all 24 slots with minimal latency and high immunity to electromagnetic interference. The robust backplane design guarantees signal integrity even at full capacity, ensuring that the Siemens 6DD1682-0BE0 provides a stable foundation for mission-critical control tasks.
Passive cooling design for reduced maintenance: The fanless design of the Siemens 6DD1682-0BE0 eliminates a common point of mechanical failure, reducing maintenance requirements and enhancing overall system reliability . This natural convection cooling approach, validated through rigorous thermal testing, makes the Siemens 6DD1682-0BE0 particularly well-suited for environments where low noise, reduced dust ingress, and minimal moving parts are key considerations.
Optimized for reliability and EMC compliance: Built to Siemens’ stringent quality standards, the Siemens 6DD1682-0BE0 is designed with comprehensive EMC shielding and grounding features. The chassis provides multiple grounding studs to ensure an effective low-impedance connection to the cabinet ground, as per official installation guidelines . This attention to detail ensures that the Siemens 6DD1682-0BE0 maintains stable operation even in environments with high electrical noise.
