Overview
Furthermore, the SDI208 integrates seamlessly with Bachmann’s M200 controller, creating a unified and consistent safety platform across distributed systems. In addition, its flexible installation options enhance adaptability in various plant configurations. For instance, users can install it directly beside the safety CPU, connect it through a bus expansion, or mount it remotely via FASTBUS. Consequently, the module adapts efficiently to both centralized and decentralized automation layouts, ensuring optimal system design and simplified maintenance.
Specification
| Parameter | Specification |
|---|---|
| Module Type | Safety Digital Input Module |
| Model Number | SDI208 |
| Number of Inputs | 16 digital inputs (can be used redundantly in pairs) |
| Safety Classification | PL e / SIL3 / Cat 4 |
| Input Voltage (High) | 15 V DC to 34 V DC |
| Input Voltage (Low) | –34 V DC to +5 V DC |
| Input Delay (HW) | 300 µs (typical) |
| Input Delay (SW) | 1 ms with test pulsing disabled |
| Input Type | IEC 61131-2 Type 1 |
| Minimum Input Current | 3.5 mA at 24 V DC |
| Galvanic Isolation | 500 V (system to field and between groups) |
| Internal Current Consumption | 5 V / 500 mA via backplane |
| External Power Supply | 24 V DC (18–34 V), reverse polarity protected |
| External Current Consumption | ~65 mA at 24 V DC + sensor load |
| Connection Technology | RM 3.5 (I/O), RM 5.08 (power), screw or spring terminal |
| Status Indicators | Green LEDs for each channel, “SAFE” status LED |
| Operating Temperature | –30 °C to +60 °C (fanless) |
| Storage Temperature | –40 °C to +85 °C |
| Relative Humidity (Operation) | 5–95%, non-condensing or with condensation |
| Altitude | Up to 4500 m (with derating above 2000 m) |
| Protection Class | Class 3 |
| Certifications | CE, UKCA, cULus, ABS, BV, DNV, KR, LR, NK, RINA |
| Compliance Standards | IEC 61508, EN ISO 13849, EN 62061, EN 61511, UL 61010-1 |
| Dimensions / Weight | Compact M200 format (per Bachmann standard) |
FAQ
The SDI208 meets SIL3 (IEC 61508), PL e, and Cat 4 safety levels for high-integrity control systems.
Q2: Can the module be used with standard M200 controllers?
Yes. The SDI208 integrates seamlessly with the Bachmann M200 controller via the safety bus.
Q3: How many safety input channels are available?
It provides 16 digital inputs, which can be paired redundantly for SIL3 operation.
Q4: Does the module support remote installation?
Absolutely. It can be connected directly beside the safety CPU or remotely via FASTBUS.
Q5: Is the SDI208 suitable for marine and offshore environments?
Yes. It holds marine approvals from ABS, DNV, KR, LR, and RINA, making it ideal for shipboard use.
Manual/Datasheet PDF
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