Description

The Yokogawa AFV30D-A41252 is a high-reliability, redundant-capable power supply module engineered for the CENTUM VP Field Control Station (FCS)—a core component of Yokogawa’s flagship distributed control system used in continuous and batch process industries. This module converts universal AC input (100–240 VAC) into a tightly regulated 24 VDC output at up to 10 A, powering critical I/O modules, CPU units, and communication interfaces within the FCS chassis. The Yokogawa AFV30D-A41252 supports hot-swap operation and N+1 redundancy, ensuring uninterrupted plant operations even during maintenance or partial failure events.

Designed to meet stringent industrial safety and performance standards, the Yokogawa AFV30D-A41252 incorporates advanced protection mechanisms—including overvoltage, overcurrent, short-circuit, and thermal shutdown—to safeguard downstream electronics in harsh environments such as refineries, petrochemical plants, and power generation facilities. As an integral part of Yokogawa’s fault-tolerant architecture, the Yokogawa AFV30D-A41252 contributes directly to system availability, often achieving >99.999% uptime in SIL-rated applications. Its robust mechanical design, conformal coating options, and compliance with global certifications (UL, CE, IEC) make it a trusted choice for engineers prioritizing operational continuity and lifecycle support.

Technical Specifications

Product Model | AFV30D-A41252
Manufacturer | Yokogawa Electric Corporation
Product Type | Redundant AC/DC Power Supply Module for CENTUM VP FCS
Input Voltage Range | 100–240 VAC, 50/60 Hz (auto-ranging)
Output Voltage | 24 VDC ±2%
Maximum Output Current | 10 A continuous
Power Rating | 240 W
Redundancy Support | Yes, N+1 via parallel operation with identical units
Hot-Swap Capable | Yes
Operating Temperature | 0°C to +60°C
Cooling Method | Convection cooling (no fan required)
Certifications | UL 61010-1, CE, IEC 61000-6-2/6-4, RoHS compliant
Mounting | Slide-in module for Yokogawa FCS rack (standard DIN rail compatible)

Main Features and Advantages

High-availability redundant architecture:
The Yokogawa AFV30D-A41252 is designed for parallel operation with other identical units in the same FCS power compartment, enabling true N+1 redundancy. If one module fails, the others seamlessly carry the full load without voltage sag or system interruption—critical for safety-instrumented systems and continuous processes where unplanned shutdowns cost millions per hour.

Robust industrial reliability:
Built with long-life electrolytic capacitors, wide-input-range switching topology, and comprehensive protection circuits, the Yokogawa AFV30D-A41252 operates reliably in electrically noisy and thermally challenging environments. It features automatic recovery from transient faults and includes status LEDs for real-time health monitoring—power OK, overload warning, and fanless thermal management indicators.

Seamless integration with CENTUM VP:
As an official Yokogawa-engineered module, the Yokogawa AFV30D-A41252 requires no configuration or firmware updates. It communicates power status directly to the FCS controller via backplane signaling, enabling predictive maintenance alerts in the HIS (Human Interface Station). Its mechanical dimensions and connector pinout are fully standardized across the CENTUM VP ecosystem, ensuring drop-in replacement during upgrades or repairs.

Global compliance and service longevity:
The Yokogawa AFV30D-A41252 meets international safety and EMC standards, facilitating deployment in North America, Europe, and Asia without modification. Yokogawa maintains long-term support for this module, with production lifecycles exceeding 15 years—ensuring spare availability for legacy and greenfield DCS installations alike.

Application Field

The Yokogawa AFV30D-A41252 is deployed worldwide in mission-critical process automation systems where power integrity directly impacts safety, environmental compliance, and production efficiency. In oil refineries and LNG terminals, it powers FCS racks that control distillation columns, compressors, and emergency shutdown valves—applications demanding SIL 2/3 compliance and zero tolerance for power anomalies. Similarly, in chemical plants handling reactive or toxic materials, the Yokogawa AFV30D-A41252 ensures uninterrupted operation of temperature, pressure, and flow control loops that prevent runaway reactions.

Power generation facilities—including combined-cycle gas turbines and nuclear auxiliary systems—rely on the Yokogawa AFV30D-A41252 to maintain DCS functionality during grid fluctuations or black-start scenarios. Water and wastewater treatment plants also utilize this module in remote pumping stations where ambient temperatures and humidity challenge standard power supplies. Because the Yokogawa AFV30D-A41252 supports hot-swap replacement, maintenance teams can service power infrastructure without halting the entire control system—a key advantage in 24/7 operations. Its role extends beyond basic conversion; it is a foundational element of Yokogawa’s “fail-operational” philosophy in industrial automation.

Related Products

• AFV30D-A41251: Lower-current variant (5 A output); not interchangeable without verifying FCS load requirements.

• AFV30D-A41253: Higher-power version (12 A); used in FCS configurations with dense I/O or redundant CPUs.

• CP451: CENTUM VP FCS main processor module—powered by AFV30D-A41252 units.

• AMF30D: FCS mounting frame/power backplane that hosts AFV30D-A41252 modules.

• AAB841: Analog I/O module commonly installed in the same FCS rack powered by AFV30D-A41252.

• CENTUM VP R6.0+: Minimum DCS software version recommended for full diagnostics with AFV30D-A41252.

• Yokogawa PSR Series: Legacy power supplies for older CENTUM CS 3000 systems—AFV30D-A41252 is not backward compatible.

Installation and Maintenance

Pre-installation preparation: Before installing the Yokogawa AFV30D-A41252, verify that the FCS power compartment is de-energized and locked out per site safety procedures. Confirm the input voltage range matches local mains (100–240 VAC). Inspect the module for shipping damage and ensure the guide rails in the AMF30D frame are clean and aligned. Slide the Yokogawa AFV30D-A41252 fully into the slot until the retention latch clicks; incomplete seating may cause intermittent power or communication faults.

Maintenance recommendations: Although the Yokogawa AFV30D-A41252 is rated for 100,000+ hours MTBF, periodic visual inspection of status LEDs is recommended—green indicates normal operation, while blinking or off may signal overload or internal fault. In redundant setups, test failover by manually removing one unit while monitoring system logs for voltage stability. Store spares in dry, temperature-controlled environments to prevent capacitor degradation. Never mix AFV30D-A41252 with non-Yokogawa or non-identical power modules, as mismatched output impedance can cause current imbalance and premature failure.