PS-502-01 YOKOGAWA

PS-502-01 Yokogawa Input module

Brand：Yokogawa Model number：PS-502-01

Country of origin: Japan Product weight：0.55kg

HS code：8538900000

Product Details：

Product Dimensions：

The Yokogawa PS-502-01 is a specialized power supply module designed primarily for the Centum CS 3000 and Centum VP distributed control systems (DCS). It serves as a critical component in the system infrastructure, providing regulated and reliable DC power to various control units and input/output modules. This specific model belongs to the legacy series of Yokogawa power solutions, known for their long-term stability and high-performance standards in mission-critical industrial environments.

Product Parameters

Operating Input Voltage: Typically supports standard AC mains inputs ranging from 100V to 120V AC or 220V to 240V AC depending on the specific system configuration requirements. Output Voltage: Provides a steady DC output, usually 24V DC, required to power the internal circuitry of control stations and connected field devices. Frequency Compatibility: Operates within standard industrial frequencies of 50 Hz and 60 Hz. Form Factor: Designed for rack-mounted installation within Yokogawa’s dedicated system cabinets, ensuring a modular and space-saving fit. Cooling Method: Natural air convection or integrated fan cooling depending on the load and surrounding cabinet temperature. Connection Interface: Features robust terminal connectors designed to handle high-current distribution and ensure low resistance contact points. Redundancy Support: Often compatible with dual-redundant power configurations to ensure continuous system operation even if one power unit fails.

Product Advantages

High Reliability: Built with industrial-grade components, the PS-502-01 is engineered to operate 24/7 in harsh plant environments without degradation in output quality. Tight Voltage Regulation: The module maintains a very precise output voltage with minimal ripple and noise, which is essential for the accurate operation of sensitive analog input modules and processors. Integrated Protection: It includes built-in safeguards against overvoltage, overcurrent, and short-circuit conditions, protecting the expensive downstream control hardware from electrical faults. System Integration: As an official Yokogawa component, it integrates perfectly with the Centum system diagnostics, allowing the DCS to monitor the health and status of the power supply in real-time. Long Service Life: These modules are famous for their longevity, often remaining operational for decades in industrial settings such as refineries and chemical plants.

Important Considerations and Precautions

Professional Installation: This module should only be installed and serviced by qualified personnel who are familiar with Yokogawa DCS hardware and high-voltage electrical safety protocols. Static Electricity: Handle the module using appropriate ESD (Electrostatic Discharge) protection, such as wrist straps, to prevent damage to internal semiconductor components. Heat Dissipation: Ensure that the ventilation slots in the cabinet are not blocked. Excessive heat is the primary cause of premature power supply failure. Redundancy Checking: If used in a redundant setup, periodically verify that the load-sharing and failover mechanisms are functioning correctly to avoid a single point of failure during a real power event. Input Verification: Always confirm that the local AC supply voltage matches the module's rated input specifications before applying power to prevent catastrophic damage. Aging Components: Since this is an older model, users should perform regular visual inspections for signs of capacitor aging or heat discoloration.

Product Applications

Refining and Petrochemical Plants: Providing the primary power source for the controllers that manage high-risk processes like distillation and cracking. Power Generation: Used in control cabinets for steam turbine monitoring and boiler control systems where system uptime is mandatory. Water and Wastewater Treatment: Powering the distributed I/O racks that manage pump stations and filtration units across large geographical areas. Chemical Processing: Supporting the automation of batch reactors where precise timing and sensor accuracy depend on a stable power rail. Legacy System Maintenance: Frequently used as a direct replacement part for maintaining existing Centum CS 3000 installations that have not yet been fully migrated to newer hardware platforms.

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