YOKOGAWA ADV551-P50 Safety Digital Input Module

Description

The YOKOGAWA ADV551-P50 integrates seamlessly into Yokogawa’s ProSafe-RS platform as part of a fault-tolerant safety loop. Each module processes 16 digital inputs (24V DC) with dual-channel redundancy, comparing signals internally to detect discrepancies that might indicate a fault. It connects via Yokogawa’s proprietary safety network to ProSafe-RS controllers, using certified safety protocols to ensure deterministic response times – critical for meeting safety system performance requirements (PFD calculations).

ADV551-P50

The module’s continuous self-diagnostics monitor for issues like field wire breaks, short circuits, or internal component failures, immediately alerting the system to maintain safety integrity. For maintenance, its hot-swappable design allows replacement without taking the entire safety system offline, while the front-facing LEDs provide instant visual status of each channel.

ADV551-P50

Technical specifications:
Model Number ADV551-P50
Brand Yokogawa
Type Safety Digital Input Module
Input Type 24V DC (Sink/Source)
Channels 16 (Dual-channel redundant)
Safety Certification SIL3 (IEC 61508), TÜV Rheinland
Response Time < 50 ms (configurable)
Operating Temp Range -20°C to +60°C
Mounting ProSafe-RS I/O Unit
Diagnostics Channel faults, wire breaks, short circuits
Power Consumption 2.5 W (typical)
Compliance CE, ATEX, IECEx

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ADV551-P50

Main features and advantages:

Choosing the YOKOGAWAADV551-P50 means investing in operational safety and reliability. Its dual-channel architecture with discrepancy detection prevents nuisance trips while maintaining the highest safety integrity – crucial for avoiding costly process shutdowns. Engineers appreciate the module’s transparent diagnostics, which reduce troubleshooting time by clearly identifying whether an issue stems from field devices, wiring, or the module itself. The SIL3 certification provides peace of mind for safety system designers, knowing the module meets the most stringent requirements for risk reduction. For plant operators, the hot-swappable capability means maintenance can be performed without compromising overall system safety, as redundant modules continue protection during replacement. The module’s wide operating temperature range and robust construction ensure reliable performance even in harsh plant environments.

ADV551-P50