Description
Key Technical Specifications
| Parameter | OEM specification |
|---|---|
| Product model | AFV10D-S41101 |
| Manufacturer | Yokogawa |
| Processor | VR5432, 133 MHz |
| Main memory | 32 MB |
| Memory backup | Battery-backed, maximum 72 hours |
| Battery recharge time | Minimum 48 hours |
| Network interface | Dual-redundant Vnet/IP |
| Connectable node units | Maximum 14 per FCU |
| ESB node limit | Maximum 9 |
| Power supply | 100–120 VAC, 50/60 Hz |
| Power consumption | 200 VA |
| FCU status contacts | 2 terminals, NC and common |
| Contact rating | 30 VDC, maximum 0.3 A |
| Processor modules | 2 in dual-redundant configuration |
| Power-supply modules | 2 in dual-redundant configuration |
| Mounting | 19-inch rack, 8 × M5 mounting screws |
| Weight | Approximately 8 kg |
Ordering-code verification warning: The Yokogawa general specification lists 4 for dual-redundant Vnet/IP and dual-redundant power, 1 for 100–120 VAC, and 1 for the LFS1500 control function. However, its published code table lists 5, 6, E, or F for the hardware/environmental option position—not 0. Some secondary listings interpret the 0 in S41101 as basic type. Confirm the original nameplate and full ordering code before treating that interpretation as an OEM-confirmed configuration.
Product Introduction
The Yokogawa AFV10D-S41101 Duplexed Field Control Unit is the central processing assembly of a CENTUM VP Field Control Station. It executes configured control functions, exchanges process data with the supervisory system, and manages communication with distributed I/O node units. Its dual-redundant Vnet/IP architecture provides two communication paths for higher system availability.
The AFV10D uses a VR5432 processor and 32 MB of main memory. The documented configuration supports up to 14 connected node units per FCU, including a maximum of nine ESB bus node units. The LFS1500 control function is required for operation. Additional application capacity and node connections can be provided through the LFS1550 expansion package, subject to licensing and system configuration.
AFV10D-S41101
Application Scenarios & Field Pitfalls
Typical applications
- CENTUM VP distributed process control.
- Redundant control stations in continuous-process facilities.
- Oil and gas production and processing.
- Chemical and petrochemical plants.
- Power generation and other process industries.
- Distributed FIO architectures using ESB or ER bus node units.
Important engineering checks
- Redundancy configuration: Verify that both processor modules and both power-supply modules are installed and operating correctly.
- Vnet/IP network: Check both network paths, switch configuration, cabling, and communication status. Dual ports alone do not establish end-to-end network redundancy.
- Node capacity: The standard documented limit is 14 node units, with a maximum of nine ESB nodes. Additional capacity requires the applicable LFS1550 expansion package.
- Bus interface modules: ESB node connections require EC401 coupler modules in slots 7 and 8 for dual-redundant configurations. ER bus connections require EB401 interface master modules.
- Memory backup: Battery backup supports main memory for a maximum of 72 hours under the specified conditions. Check battery condition and recharge history during maintenance.
- Software compatibility: Confirm the LFS1500 control function and applicable CENTUM VP system version before installing a replacement.
- Power configuration: The S41101 designation is associated with 100–120 VAC in secondary ordering descriptions. Verify the actual nameplate supply rating before energizing.
Related Products
| Model | Function | Relationship |
|---|---|---|
| AFV10S | Single Field Control Unit | Non-duplexed counterpart |
| CP451 | FCU processor module | Internal processor component |
| PW481 | Power supply module | Internal power component |
| PW482 | Power supply module | Alternative internal power component |
| PW484 | Power supply module | Alternative internal power component |
| EC401 | ESB Bus Coupler Module | ESB node connection |
| EB401 | ER Bus Interface Master Module | ER bus node connection |
| LFS1500 | Field Control Station control function | Required software function |
| LFS1550 | Application capacity expansion package | Optional capacity expansion |
These components have different functions and are not direct replacements for the complete AFV10D assembly.
Procurement and Quality Control
The AFV10D-S41101 is listed as discontinued in secondary product records. For a legacy CENTUM VP installation, exact configuration matching is more important than matching the AFV10D family name alone.
Before accepting a replacement, verify:
- Complete model and suffix code on the Yokogawa nameplate.
- Hardware style and revision.
- Processor and power-supply module revisions.
- 100–120 VAC input configuration.
- Vnet/IP communication on both network paths.
- Battery condition and memory retention.
- ESB/ER bus interface configuration.
- LFS1500 and LFS1550 software licensing requirements.
- Primary/standby synchronization and controlled failover test results.
Replacement recommendation: Treat the -S41101 as a complete redundant control-system assembly. Confirm the suffix-code discrepancy, installed module revisions, and CENTUM VP software configuration before approving a replacement. A basic power-on test is not sufficient to establish successful controller redundancy.
