Yokogawa ADV551-P50 CENTUM VP 32-Channel Digital Output Module

Product Overview

The Yokogawa ADV551-P50 serves as a high-density, ruggedized discrete control interface for the CENTUM VP Distributed Control System (DCS). This 32-channel module executes switching commands to manage field actuators such as solenoid valves, interposing relays, and signaling lamps. Equipped with the "P" functional suffix, this module supports advanced pulse width and time-proportional output functions. The "50" designation indicates that the module features G3-level corrosive resistance, making it the definitive choice for facilities exposed to aggressive atmospheric contaminants.

Condition: 100% Brand New and Original Factory Sealed.

Part Number Breakdown: ADV551-P50

Yokogawa utilizes a structured coding system to define environmental protection and connection styles:

• ADV551: Digital Output Module (32-channel, 24 V DC, Isolated).

• -P: Equipped with Pulse Width Output and Time-Proportional Output functions.

• 5: With G3 Corrosive Resistance

• 0: Basic type hardware specification for universal interface logic.

Technical Specifications

The ADV551-P50 provides high-speed switching and environmental hardening for critical control loops.

• Number of Channels: 32, isolated

• Rated Output Voltage: 24 V DC

• Maximum Load Current: 100 mA per channel (at 26.4 V DC)

• Response Time (Status): 3 ms or less

• Response Time (Pulse): 10 ms or less

• Environmental Protection: ISA Standard S71.04 Class G3

• Isolation Type: Optical isolation between system and field

• Current Consumption: 500 mA (at 5 V DC)

Engineering Advantages

• G3-Rated Corrosive Resistance: The ADV551-P50 features specialized conformal coating on its internal circuit boards. This prevents silver and copper corrosion caused by hydrogen sulfide and other aggressive gases, significantly extending the module's lifespan in unconditioned industrial environments like refineries and wastewater plants.

• Hardware-Based Pulse Modulation: The module executes time-proportional control cycles internally. This offloads timing-critical tasks from the main controller CPU, ensuring consistent pulse widths for dosing or heating applications regardless of the DCS logic scan time.

• Maximized Rack Density: Processing 32 outputs within a single slot maximizes I/O density. This allows engineers to utilize smaller control cabinets and fewer subracks, lowering the total cost of installation and cooling.

• Ultra-Fast Signal Execution: A 3 ms response time for status outputs ensures nearly instantaneous command delivery. This performance is vital for high-speed interlocking and sequence-of-events (SOE) applications where millisecond precision prevents mechanical damage.

• Industrial-Grade Optical Isolation: Optical isolation protects the internal DCS bus from field-side electrical surges and ground loops. This architecture ensures that a localized short circuit on a field actuator does not propagate to the central safety logic.

FAQs

• Can the ADV551-P50 replace a standard ADV551-P00 model?

  Yes. The P50 version offers identical functionality and pulse features but adds G3 environmental protection. It is a recommended upgrade if your control room is located in a corrosive area.

• Does the ADV551-P50 require an external field power supply?

  Yes. You must provide a 24 V DC external supply to drive the output loads. The module switches this power across the 32 channels via its isolated transistor array.

• What is the difference between ADV551-P50 and ADV551-P53?

  The P50 is the basic G3-rated version, while the P53 is a later hardware revision. Both share the same core specifications and environmental ratings, though the P53 may contain updated internal sub-components for improved thermal efficiency.

• Is the ADV551-P50 compatible with redundant I/O?

  Yes. When used with a redundant-capable baseplate, you can install these modules in pairs. The system maintains continuous control even if one module requires replacement or experiences a fault.