Product Introduction
In critical industrial processes, a single point of failure can cause costly downtime. The Yokogawa AFV10D-S41201 Duplexed Field Control Unit addresses this challenge with full redundancy, ensuring continuous operation even in harsh conditions. Designed for Vnet/IP and FIO systems, this unit is rack-mountable and offers dual-redundant processor modules and power supplies, making it a cornerstone for high-availability control in industries like oil & gas, chemicals, and power generation.
Technical Specifications Breakdown
The Yokogawa AFV10D-S41201 is built around a VR5432 processor running at 133 MHz, with 32 Mbyte main memory. The memory protection during power failure uses a battery back-up that lasts up to 72 hours, with a recharge time of minimum 48 hours. The unit supports dual-redundant Vnet/IP communication interfaces, ensuring network reliability. Power options include 100-120 V AC (200 VA), 220-240 V AC (230 VA), or 24 V DC (5.5 A), selectable via suffix codes. The total weight is approximately 8 kg, and mounting is standard 19-inch rack with M5 screws.
| Parameter |
Specification |
| Processor |
VR5432 (133 MHz) |
| Main Memory |
32 Mbyte |
| Battery Backup |
72 hours (max), recharge 48 hours (min) |
| Vnet/IP Interface |
Dual-redundant |
| Power (AC 100-120V) |
200 VA |
| Power (AC 220-240V) |
230 VA |
| Power (DC 24V) |
5.5 A |
| Weight |
Approx. 8 kg |
| Mounting |
19-inch rack |
Industry Applications
The duplexed nature of the Yokogawa AFV10D-S41201 makes it ideal for processes where uninterrupted control is paramount. In a refinery, the unit manages distributed control loops without single points of failure. In a power plant, it handles boiler and turbine control with dual-redundant safety. The LFS1500 control function, included in this variant, supports up to 3 nodes for small to medium applications, expandable to 14 with the LFS1550 package. The unit also supports up to 14 node units per FCU, allowing flexible I/O expansion with ESB or ER bus modules.
Installation & Setup Guidance
Mount the Yokogawa AFV10D-S41201 in a standard 19-inch rack using the supplied insulation bush and M5 screws. For power connection, use M4 screw terminals for supply and grounding. Network connection requires a UTP cable (CAT5e or better) to a Layer 2 switch. When configuring dual-redundant processors, install the processor module (CP451) and EC401 ESB Bus Coupler in both slot 7 and slot 8. For single configuration, EC401 goes in slot 7 only. ER Bus Node Units require the EB401 master module installed in an odd-numbered slot with the right slot empty. Always verify suffix codes match your power requirements before installation.
Maintenance & Reliability
The Yokogawa AFV10D-S41201 incorporates battery-backed memory protection, minimizing data loss during power interruptions. The battery should be replaced every 72 hours of backup usage or per manufacturer guidelines. The FCU status contact output provides dry contacts that open during failure, allowing immediate remote diagnostics. With no moving parts in the processor module, regular inspection focuses on cooling airflow and cable integrity. The dual-redundant design ensures that even if one processor or power supply fails, the system continues operating without interruption.
Selection Guide & Purchasing Advice
When selecting the Yokogawa AFV10D-S41201, confirm the suffix codes: S for standard type, 4 for dual-redundant Vnet/IP and power supply, and the appropriate power suffix (1 for 100-120 V AC or 2 for 220-240 V AC). The suffix code 6 identifies the LFS1500 control function. Ensure you have the appropriate node unit expansion licenses (/NDEL) for connecting additional I/O nodes. For reliable procurement, trust industrial automation specialists like UBEST Automation to supply genuine, tested units. Visit ubest101 for more product details or to discuss your configuration needs.