Description
Product Overview
The Yokogawa AFV30D-A41152 is a duplexed (dual redundant) Field Control Unit (FCU) for Yokogawa CENTUM VP distributed control system. This 19-inch rack-mounted controller executes real-time process control calculations, analog/digital I/O processing and interlock logic for continuous process industries. It is fully assembled with dual CP471 processor modules and dual PW481 power supplies, supporting Vnet/IP control network and FIO field I/O modules. Widely deployed in oil refineries, chemical plants, power generation, pulp & paper and LNG facilities where uninterrupted control operation is mandatory. Automatic bumpless switchover between primary and standby controller upon hardware or communication fault.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | AFV30D-A41152 |
| Manufacturer | Yokogawa Electric Corporation |
| Series | CENTUM VP DCS |
| Product Type | Duplexed Field Control Unit (FCU) |
| Processor Module | Dual CP471-00 S1 processor |
| Power Supply | Dual PW481-50 S2 redundant power supplies |
| Control Network | Dual redundant Vnet/IP |
| I/O Interface | FIO (Field I/O) bus |
| Max Connectable Nodes | Up to 13 I/O nodes per FCU |
| Memory Backup | Rechargeable battery backup, up to 72 hours memory retention |
| Form Factor | 19-inch rack mount duplex FCU assembly |
| Power Input | 24 VDC |
| Operating Temp | 0°C ~ +60°C |
| Storage Temp | -40°C ~ +85°C |
| Humidity | 5–95% non-condensing |
| Programming Software | CENTUM VP Engineering Builder |
| Redundancy | Full duplex redundancy: CPU, power, Vnet/IP |
| Diagnostics | Built-in self-test, watchdog, network, I/O and power fault monitoring |
| Certifications | CE, IEC 61131, IEC 61508 |
| Hot Swap | Individual modules (CPU, PSU) hot-swappable |
Key Features
- Complete duplex redundant FCU assembly with dual CPU and dual power supplies, bumpless automatic switchover without process interruption.
- High-performance CP471 processor for fast deterministic control cycle execution, PID, sequence and interlock calculations.
- Dual redundant Vnet/IP Ethernet control network to communicate with HIS operator stations and other FCS nodes.
- FIO bus interface for connecting remote field I/O modules, flexible system expansion.
- Rechargeable backup battery preserves control memory for up to 72 hours during power loss.
- Comprehensive continuous diagnostics covering CPU, memory, power supplies, network links and I/O communication faults.
- 19-inch standard rack mount design for control cabinet integration; individual internal modules support hot-swap maintenance.
- Programmed and commissioned via CENTUM VP Engineering Builder for control strategy configuration, simulation and firmware upgrade.
Installation Notes
- Mount the AFV30D-A41152 FCU into standard 19-inch DCS cabinet rack.
- Confirm CENTUM VP system firmware compatibility before replacement.
- Separate Vnet/IP network cables and FIO bus wiring from high-current power cables to reduce EMI noise.
- Wear ESD wrist strap while handling CPU and power modules.
- Follow plant lockout/tagout procedures even during hot-swap maintenance of internal cards.
- Backup the CENTUM VP control project database before FCU component replacement.
- After commissioning, test redundant switchover function and validate all control loops and interlock logic before returning process online.
Testing Procedure
- Visual inspection: Inspect rack assembly, CP471, PW481 modules, connectors and status LEDs for physical damage, bent pins or corrosion.
- Install AFV30D-A41152 assembly into DCS rack, apply 24VDC power and run power-up self-test.
- Connect via CENTUM VP Engineering Builder, confirm FCU identification and healthy duplex status.
- Verify primary/standby synchronization, manually trigger switchover and confirm bumpless transfer.
- Simulate network, power and CPU faults to validate fault detection and automatic switchover.
- Test FIO bus communication with connected I/O nodes, verify analog and digital signal read/write operations.
- Save project backup and diagnostic logs, record switchover test results and tag unit for spare inventory.
FAQ
Q: What is AFV30D-A41152 used for? A: It is a duplex redundant Field Control Unit (FCU), the core controller for Yokogawa CENTUM VP DCS for process plant closed-loop control and interlocks.
Q: What redundancy does AFV30D-A41152 have? A: Full duplex redundancy including dual CP471 CPU, dual PW481 power supply and dual Vnet/IP network.
Q: Are internal modules hot swappable? A: Yes, CP471 processor and PW481 power supply modules are hot-swappable while the FCU remains online.
Q: What software configures this unit? A: CENTUM VP Engineering Builder for control strategy programming, diagnostics and firmware updates.
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