Product Introduction

The ADV151‑P50 S2 is a high‑density digital input module from the Yokogawa brand, belonging to the ADV151 series of discrete input I/O modules. It is engineered for industrial automation and process control systems that require robust, reliable acquisition of multiple ON/OFF signals from field devices.

This module accepts 24 V DC discrete signals (sink or source), typically originating from limit switches, float sensors, push‑buttons, proximity sensors or relay contacts, and delivers them into the control system logic with high integrity. The suffix “P50” indicates the variant within the ADV151 family offering push‑button input capability, status detection and enhanced features; “S2” denotes the style or revision of the module.

With support for 32 channels in one module, fast response time, strong isolation, and space‑efficient form factor, the ADV151‑P50 S2 is ideal for distributed control systems (DCS), field I/O racks, redundant systems, and retrofits or expansions where compactness and wiring simplicity matter.

Technical Specifications

Applications

• In field I/O racks for distributed control systems, the ADV151‑P50 S2 captures discrete ON/OFF signals from various field devices such as limit switches, level sensors, relay contacts and push‑buttons, and routes them into the controller logic for further processing, interlocks and alarms.

• In manufacturing automation settings, it monitors machine status inputs, operator panel buttons, conveyor interlocks, production line stoppages and safety‑interlock signals, providing fast, reliable acquisition of digital states.

• In process industries such as oil & gas, petrochemical, power generation, water / wastewater treatment and utilities, this module supports the large volume of discreet field signals with durable isolation and minimal wiring overhead—particularly under electrically noisy or harsh environmental conditions.

• In high‑availability or redundant system architectures where dual or multiple I/O channels are needed to ensure continuous operation, the ADV151‑P50 S2 integrates into redundant racks and provides system robustness and fault tolerance.

• In retrofit or expansion projects, the compact size, standard 24 V discrete input interface and support for existing field wiring reduce installation time, lower cabinet cost, and simplify system upgrade paths.

Advantages

1. High channel density: With 32 discrete inputs in a single module, the ADV151‑P50 S2 significantly reduces the number of modules and wiring required, saving panel space and installation complexity.

2. Fast and reliable response: With ≤ 8 ms response time for status inputs and support for rapid push‑button input detection (minimum ON time ~20 ms, maximum cycle ~25 Hz), it ensures timely event capture and control loop responsiveness.

3. Robust electrical isolation: The module provides high isolation ratings (2 kV AC and 500 V AC) which help protect signal integrity in noisy industrial environments, reducing interference and enhancing reliability.

4. Standard 24 V DC discrete input interface: This fits widely adopted industrial signal standards, simplifying integration with sensors, switches, and existing infrastructure, reducing need for signal adaptations.

5. Compact and lightweight design: With approximate weight of 0.30 kg and modest dimensions, the module is easy to mount, swap out and maintain, particularly in space‑constrained cabinets.

6. Flexible wiring and installation: Supports pressure‑clamp terminals, dedicated cable or MIL connector wiring, enabling technicians to adapt to various field wiring scenarios and minimizing wiring errors or installation time.

7. Redundancy‑ready architecture: Built for integration into field I/O racks supporting redundant I/O channels, this module helps improve system reliability and uptime in mission‑critical control systems.

8. Proven brand ecosystem: As part of the ADV151 series and Yokogawa’s field I/O platform, the module benefits from long‑term support, compatibility with existing modules, and ease of upgrade.

Brand & Series

• Brand: Yokogawa

• Series: ADV151 Digital Input Module Series

• Category: 24 V DC isolated digital input modules (32‑channel type)

• Positioning: The ADV151 series provides digital input modules, digital output modules, analog input/output modules, and event‑capture modules that are used in field I/O nests of distributed control systems. The ADV151‑P50 S2 is a digital input module variant optimized for high channel count, push‑button input support, and industrial‑grade robustness.

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