Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | Siemens 6DS1723-8RU |
| Manufacturer | Siemens AG |
| Product Type | Signal Control Module / Interface Module |
| Series | TELEPERM M (AS235 / AS235H) |
| I/O Configuration | 8 digital inputs + 8 digital outputs (standard) |
| Address Space | 16 bytes |
| Base Address Selection | 8-way S1 DIL switch |
| Supply Voltage | 24 V DC (±20%) |
| Output Current Capacity | 0.5 A per channel (max) |
| Input Current | 4 mA typical per digital input |
| Scan / Update Time | 2 ms (all 16 channels) |
| Isolation | 2 kV channel-to-bus opto-isolation |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions | 25.4 cm × 7.6 cm × 20.3 cm (H×W×D) |
| Weight | Approximately 0.4 kg |
| MTBF @ 40°C | 235,000 hours (Siemens SN 29500) |
| Protection Class | IP20 |
| Certifications | CE, UL (historical compliance) |
| Status Indicators | Front-panel channel and power status LEDs |
Main Features and Advantages
The Siemens 6DS1723-8RU delivers exceptional value through its robust signal processing capabilities and flexible configuration options. At the core of its design is the onboard signal conditioning circuitry, which eliminates the need for external relay or signal conversion modules in many applications. The Siemens 6DS1723-8RU provides 2 kV of opto-isolation between the field side and the system bus, effectively breaking ground loops and protecting the central processor from voltage spikes and electromagnetic interference commonly found in power generation and heavy industrial environments .
Flexible addressing is a key advantage of the Siemens 6DS1723-8RU, achieved through its 8-way DIL switch configuration. The module supports addressing in either the I/O range or the memory range, allowing system integrators to optimize address allocation based on the specific requirements of the control architecture. When addressing in the I/O range, the DIL switches define address bits A4 through A11; when addressing in the memory range, they define A10 through A17 . This flexibility ensures the Siemens 6DS1723-8RU can be precisely positioned within the system’s address map without conflict.
The Siemens 6DS1723-8RU is engineered for high-speed operation with a 2 ms scan rate across all 16 channels, ensuring that critical signals are processed and transmitted with minimal latency—essential for protection interlock applications where response time is critical . The module also features diagnostic information latching that persists even when the rack is powered off, significantly simplifying troubleshooting and root cause analysis . Hot-swap capability allows the Siemens 6DS1723-8RU to be replaced without powering down the entire system, minimizing downtime for maintenance . For facilities operating legacy TELEPERM M systems, the Siemens 6DS1723-8RU serves as a vital spare part that can extend the operational life of these classic DCS installations by another decade .
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