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Safety Digital Input Module Bachmann SDI208

Safety Digital Input Module Bachmann SDI208

Product Description

The SDI208 (P/N: 00014544-00) is a high-integrity safety input module designed to extend the Bachmann M1 system’s functional safety capabilities. Working alongside the SLC284 safety processor, it provides 16 digital inputs that can be configured as 8...

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Availability: Low stock: 99 left

SKU: SDI208
Vendor: Bachmann
Category: Safety Digital Input Module
Related Series:

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Product Description

The SDI208 (P/N: 00014544-00) is a high-integrity safety input module designed to extend the Bachmann M1 system’s functional safety capabilities. Working alongside the SLC284 safety processor, it provides 16 digital inputs that can be configured as 8 redundant pairs to achieve SIL 3 and PL e / Category 4 compliance.

Equipped with dual 32-bit microcontrollers in a redundant internal architecture, the SDI208 continuously monitors input states and hardware health, ensuring a deterministic safe state in the event of a fault.

Technical Specifications

Specification Details
Model Identification SDI208
Voltage Range (Low) –34 VDC to +5 VDC
Internal Current Consumption 500 mA at 5 VDC (via backplane)
External Power Supply 24 VDC (18–34 V range)
Galvanic Isolation 500 V between input groups and system bus
Operating Temperature –30°C to +60°C

Deployment & Distributed Safety

  • Can be mounted in the main rack or remotely via FASTBUS or bus extension

  • Supports decentralized safety signals such as emergency stops, light curtains, and door interlocks

  • Safety states are transparently available to the non-safety PLC for visualization and diagnostics

  • Reduces the need for long parallel wiring back to the central controller

Frequently Asked Questions

Q: Can the SDI208 be used as a standard, non-safety digital input module?
A: While it can read standard signals, it is optimized and certified for safety applications. For non-safety tasks, consider DI232 or DIO216 for cost efficiency.

Q: Does the module detect cable breaks?
A: Yes. With optional external test pulsing, the SDI208 can detect short circuits, cross-circuits, and wiring faults.