Description
Product Introduction
The Yokogawa AFV10D-S41101 is a flagship, high-performance Field Control Unit (FCU) designed for the CENTUM VP Distributed Control System (DCS). Serving as the brain of the Field Control Station (FCS), it directly executes complex PID loops, sequential logic, safety interlocks, and high-density I/O communication across continuous and batch processing facilities.
Engineered with Yokogawa’s Pair-and-Spare processor architecture, the AFV10D-S41101 provides seamless hardware-level redundancy. Two CPU modules execute identical instruction streams simultaneously; if a hardware fault is detected on the active processor, control transfers instantly to the standby CPU in under a clock cycle without output bump, memory loss, or disruption to ongoing plant operations.
Key Technical Specifications
| Parameter | Value |
| System Architecture | Yokogawa CENTUM VP Field Control Station (FCS) |
| CPU Configuration | Duplexed / Dual Redundant Processor Modules |
| Main Memory Capacity | High-speed ECC RAM for real-time control database execution |
| Control Network Interface | Dual-redundant V net / VnetIP communication ports |
| Fieldbus & I/O Bus Interface | Supports FIO (Field Enclosure System I/O) local and optical bus extensions |
Power Supply Voltage (-41) |
Dual 100–120V AC Power Modules (50/60 Hz) |
ISA Standard Conformal Coating (-1) |
Standard non-conformal / Class G1 environmental specification |
Mounting / Form Factor (-01) |
19-inch rack-mount chassis with integrated backplane base |
| Ambient Temperature | 0^\circC to +50^\circC (32^\circF to 122^\circF) |
Application Scenarios & The “Trench” Experience
In critical continuous-process environments—such as ethylene crackers, nuclear power stations, or LNG liquefaction trains—a single-second loss of DCS execution can trigger emergency shutdown valves, flare off millions of dollars in feedstock, or damage multi-megawatt turbines. The AFV10D-S41101 is built specifically to prevent catastrophic nuisance trips. If an internal memory parity error or hardware glitch occurs on the active processor board during live operation, the redundant “spare” processor takes over control output instantly without dropping communication packets to field I/O racks or Operator Human Interface Stations (HIS).
- Petrochemical Refineries – Executing high-speed furnace temperature control, column pressure balance, and compressor anti-surge logic.
- Power Generation Rigs – Managing boiler combustion control, steam drum levels, and sequence-of-events (SOE) monitoring.
- Continuous Chemical Processing – Coordinating multi-unit reactor dosing, exothermic reaction monitoring, and distillation trains.
- Offshore FPSO Facilities – Compact rack-mounted control core managing separation trains under harsh vibration and power fluctuations.
AFV10D-S41101
AFV10D-S41101
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; we test them on actual Yokogawa CENTUM VP staging benches. Every surplus or refurbished AFV10D-S41101 unit undergoes a strict 5-stage verification process before shipping:
- Inbound Physical Inspection: Complete audit of the 19-inch rack chassis, backplane connector pins, fan unit assembly, card guides, and power supply terminal blocks.
- Dual Power Rail Burn-In: Bench-powered under full electrical load using dual 110V AC lines; verified power supply redundancy and clean internal DC voltage bus levels.
- Duplex Processor Pair & Failover Test: Loaded with CENTUM VP system software; verified synchronized CPU lockstep execution and executed live forced-fault extractions to confirm seamless, glitch-free failover to the standby CPU card.
- Network & I/O Bus Communication Test: Connected across redundant V net/VnetIP switches to confirm full link handshake, host station database downloads, and active FIO node scanning.
- Memory Clear & Anti-Static Packaging: Cleared staging project memory, inspected battery back-up links, and sealed the chassis in custom ESD shielding materials.
The Veteran’s Tech Trap Guide (Crucial Value-Add)
⚠️ Decode the Model Suffix S41101:
S– Standard Type Field Control Unit4– Dual 100–120V AC Power Supply Modules (Redundant)1– Basic Operating System / Hardware Option1– Standard Coating (Non-conformal) — Do NOT install in sulfur-heavy or chemical-corrosive environments requiring /S2 or /S3 conformal options.01– Standard 19-inch rack mount chassis with no special customization options.
❗ Watch Out for Battery Backup Age: The processor modules on the AFV10D use lithium backup batteries to retain control database parameters during power outages. Always check the battery installation date tags on the CPU modules before site installation; expired batteries will cause database loss during extended plant turnarounds.
⚠️ Check Power Supply Matching (-4 vs -2): The AFV10D-S41101 requires 100–120V AC input power lines. Connecting this unit to a 220/240V AC source without a step-down transformer will instantly blow the internal primary power supply fuses.
❗ Firmware / Revision Alignment: When replacing an existing AFV10D unit in a live system, ensure the CENTUM VP software release version on your engineering station (HIS/ENG) matches the system software revision supported by the replacement controller.
Frequently Asked Questions (FAQ for Conversion)
Q: Can I hot-swap a failed CPU card in the AFV10D-S41101 while the plant is operating?
A: Yes. Because the AFV10D-S41101 is a duplexed controller, you can remove and replace a faulty CPU or power supply module online while the backup CPU continues executing process control with zero downtime.
Q: What is the difference between AFV10D and AFV10S?
A: The AFV10D is a Duplexed (redundant) Field Control Unit containing two CPU modules and dual power supplies. The AFV10S is a Single (non-redundant) Field Control Unit containing only one CPU module.
Q: Is the AFV10D-S41101 compatible with older CENTUM CS 3000 systems?
A: The AFV10D is designed primarily for CENTUM VP systems operating over V net / VnetIP control networks. Check your domain network architecture to confirm VnetIP compatibility if integrating into upgraded CS 3000 environments.
Q: Is this Yokogawa AFV10D unit still available for system maintenance?
A: Yes. While Yokogawa continuously updates its DCS hardware lines, our fully tested New Surplus and refurbished AFV10D-S41101 units allow plant engineers to maintain existing CENTUM VP systems without expensive software migrations or cabinet re-wiring.
Q: What warranty is provided with this unit?
A: All our new surplus and bench-tested refurbished Yokogawa Field Control Units come backed by a full 12-month direct replacement warranty. If any internal component fails under normal operating conditions within one year, we will swap the unit out immediately from our stock.
Start Chat
