Product Overview
The Siemens 6DD1611-0AF0, also known as the MM3 Mailbox Module or SEK 11 Error Signal Output Module, is a specialized component designed for the SIMADYN D high-performance control system . This module serves a dual function: it facilitates efficient communication between multiple CPU modules via the L-BUS and C-BUS interfaces, and it translates internal system diagnostics into external actionable alarm signals . The Siemens 6DD1611-0AF0 is installed in the CS7 or CS8 slot of PM4, PM5, or PM6 processor racks, making it a critical element in complex automation architectures .
What distinguishes the 6DD1611-0AF0 is its integrated memory and clock functionality. Each bus interface provides 64KB of buffered SRAM, serving as data memory for operating system tasks, communications, message buffering, and trace functionality . The module also incorporates a radio clock system that can be synchronized via DCF77 time signals, enabling precise time stamping for messages and diagnostic logs across the distributed system . The Siemens 6DD1611-0AF0 is now considered a spare part as the SIMADYN D platform has been discontinued, yet it remains indispensable for maintaining operational installations in metals processing, power generation, and heavy industry .
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6DD1611-0AF0 |
| Manufacturer | Siemens AG |
| Product Type | MM3 Mailbox Module / SEK 11 Error Signal Output Module |
| Series | SIMADYN D (Submodule for PM4/PM5/PM6 Processor Racks) |
| Bus Interfaces | L-BUS and C-BUS |
| Memory Capacity | 64 KB per bus (Buffered SRAM) |
| Output Channels | 8 alarm outputs (Relay or Open Collector depending on version) |
| System Error Output | Integrated system error relay |
| Clock System | Integrated real-time clock with DCF77 radio signal synchronization |
| Supply Voltage (Logic) | +5 V DC (600 mA typical), +15 V DC (50 mA typical) |
| External Output Supply | 24 V DC (required for output channels) |
| Mounting Location | CS7 or CS8 slot on SIMADYN D processor rack |
| Dimensions | 27.9 cm x 2.5 cm x 27.9 cm |
| Weight | Approximately 0.30 kg |
| Configuration Software | STEP7/HWConfig and CFC (Control Function Chart) |
| Lifecycle Status | Discontinued (Spare Parts Only) |
