Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 6DD1606-2AC0 |
| Manufacturer | Siemens AG (Germany) |
| Product Type | SIMADYN D Processor Module (PT20G technology) |
| Processor | 16-bit 80C186 microprocessor |
| CPU Clock Speed | 20 MHz |
| Memory | 1 MB Flash, 2 MB RAM, 32 KB EEPROM (via plug-in MS4x module) |
| Digital Inputs (BI) | 16 channels |
| Digital Outputs (BO) | 16 channels |
| Analog Inputs (AI) | 4 channels |
| Analog Outputs (AO) | 4 channels |
| Encoder Inputs | 4 channels |
| Dedicated Interfaces | 1 × SITOR, 1 × RS-232/TTY (X5), 1 × SINEC H1 (X6) |
| Operating Mode Control | Mode switch ADM/RUN/STP, Reset button, Status LED |
| Power Supply | 24 V DC (backplane) |
| Operating Temperature | -25 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Protection Rating | IP20 (for installation inside control cabinet) |
| Mounting | Standard SIMADYN D rack/cabinet slot |
| Typical Dimensions | Approx. 40.3 × 233.4 × 220 mm (W × H × D) |
| Typical Weight | Approx. 0.47–1.0 kg |
| Certifications | CE, UL, CSA |
| Lifecycle Status | Discontinued — supplied as MRO spare part |
Main Features and Advantages
The SIEMENS 6DD1606-2AC0 combines a purpose-built processor architecture, flexible memory management and rich on-board I/O to deliver a control solution that remains unmatched for legacy SIMADYN D installations. Its PT20G technology — a 16-bit 80C186 CPU running at 20 MHz with dedicated converter-logic hardware — is specifically engineered for real-time drive control rather than general-purpose computing. This focus allows the 6DD1606-2AC0 to execute complex torque, speed and position control loops with deterministic timing, a capability that generic PLC platforms cannot match in high-dynamic drive applications.
Flexible firmware and application storage is a defining strength of the SIEMENS 6DD1606-2AC0. By housing system firmware and user programs on plug-in MS4x memory modules inserted into slot X50, the processor separates hardware from software. Maintenance teams can therefore replace or upgrade application code without swapping the processor itself, and can keep pre-loaded memory modules on the shelf for instant recovery from a corrupted program. The 1 MB Flash, 2 MB RAM and 32 KB EEPROM configuration provides ample headroom for sophisticated control algorithms and data buffering.
Comprehensive on-board I/O eliminates the need for extensive auxiliary modules in many SIMADYN D configurations. With 16 binary inputs, 16 binary outputs, 4 analog inputs, 4 analog outputs and 4 encoder inputs, the 6DD1606-2AC0 can directly interface to sensors, actuators and pulse encoders. The dedicated SITOR interface establishes high-speed communication with Siemens drive systems, while the RS-232/TTY port (X5) and SINEC H1 network connection (X6, up to 50 m) enable local parameterization and plant-level networking respectively.
Operational robustness is engineered into every aspect of the SIEMENS 6DD1606-2AC0. The module’s excellent EMC shielding and industrial-grade mechanical design ensure stable operation in electrically noisy environments such as rolling-mill drive rooms and converter stations. The front-panel mode switch (ADM/RUN/STP), reset button and status LED give field engineers immediate local control and visual diagnostics without requiring a connected engineering station. A wide -25 °C to +60 °C operating temperature range, 24 V DC power supply and IP20 enclosure rating make the 6DD1606-2AC0 suitable for deployment inside standard industrial control cabinets worldwide, while CE, UL and CSA certifications satisfy global compliance requirements.
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