TIDA-010044
NAMUR PLC Digital input with fault protection and diagnostics reference design
TIDA-010044
Overview
The NAMUR proximity sensor is widely used in industrial control when a special requirement on maximum energy is to be fulfilled by the sensor. This in turn dictates special requirements on the PLC digital input designed to interface with such sensor with regard to accuracy, and reliability. This reference design is a full front-end of a digital input compatible with NAMUR sensors. The design demonstrates achieving reliability through redundancy, fault protection, and extensive diagnostic features in a compact footprint.
Features
- 1.6-mA threshold, 0.4-mA hysteresis
- 0.2-mA open circuit, 6-mA short-circuit threshold
- 8.2-V open-circuit voltage, 8.2-mA short-circuit current
- Extensive diagnostics
- Fault protection
- Power and data isolation
- Redundant components for higher reliability
Industrial
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUEL4.PDF (1014 K)
Reference design overview and verified performance test data
TIDRXY7.PDF (252 K)
Detailed schematic diagram for design layout and components
TIDRXY8.PDF (61 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRXY9.PDF (140 K)
Detailed overview of design layout for component placement
TIDRXZ1.ZIP (861 K)
Files used for 3D models or 2D drawings of IC components
TIDCF28.ZIP (388 K)
Design file that contains information on physical board layer of design PCB
TIDRXZ0.PDF (606 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
General-purpose transceivers
SN74LVC1G14 — Single 1.65-V to 5.5-V inverter with Schmitt-Trigger inputs
Data sheet: PDF | HTMLStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | NAMUR PLC Digital Input With Fault Protection and Diagnostics Reference Design | Dec. 10, 2018 |
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