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The Unique Advantages of Bently Nevada’s PLC&DCS Fault Detection Algorithms

The Unique Advantages of Bently Nevada’s PLC&DCS Fault Detection Algorithms
This piece details Bently Nevada’s unique PLC&DCS fault detection algorithms, covering their design, performance, and benefits for industrial plants.

01

Layered Design: Real-Time Alert Precision

Architected with 5 isolated processing layers—Data Capture, Signal Cleansing, Pattern Matching, Risk Scoring, and Alert Delivery—this structure eliminates bottlenecks. Lab tests reveal fault detection speed improves from 2.8s (legacy) to 0.5s, enabling 5.6x faster operator response during PLC/DCS malfunctions.

68% latency reduction

02

Multi-Source Fusion: Unseen Anomaly Detection

Integrates 25+ data streams (PLC vibration, DCS pressure, ambient humidity) with 0.03% input error tolerance. A 2025 steel mill case study shows this captures 15 monthly "invisible" faults (e.g., slow bearing degradation), boosting prediction accuracy to 95%.

15/month additional faults

03

Adaptive Logic: Sustained Accuracy Over Time

Uses hourly-updating ML models to adjust thresholds. At a Gulf Coast refinery (temp swings: ±22°C/day), accuracy stayed above 97% over 2 years—vs. 81% for static systems. The model recalibrated 68% of rules seasonally.

97% long-term accuracy

04

Benchmark Leadership: Industry-Tested Results

ISA 2025 testing across 100+ sites found 98.5% critical fault detection (vs. 80.3% industry avg.), with false positives at 0.8% (standard: 4.9%). This cuts unnecessary shutdowns by 5+ events/year, saving $310K/plant annually.

98.5% detection rate

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