Technical Overview
The Yokogawa AFV10D S2 functions as a duplexed Field Control Unit (FCU) within the CENTUM VP and CS 3000 distributed control systems . This unit houses the local control database and executes PID and sequence logic independently from the Human Interface Station . A high-performance VR5432 RISC processor running at 133 MHz powers the control operations . The FCU provides 32 Mbyte of main memory for handling complex automation tasks . Importantly, a battery backup system protects the main memory data for up to 72 hours during power interruptions . The unit also supports a dual-redundant Vnet/IP interface, which ensures continuous communication with the control network .
Redundancy and Connectivity
The Yokogawa AFV10D S2 features a fully redundant architecture that includes both power supply and communication paths . It connects seamlessly to ESB and ER bus node units for comprehensive I/O expansion . Moreover, the unit supports up to 14 node connections, offering substantial scalability for diverse plant requirements . This field control unit supports a wide range of communication protocols, including HART, FOUNDATION Fieldbus, Modbus, Ethernet/IP, and PROFIBUS DP .
Mechanical and Electrical Specifications
| Specification | Value |
|---|---|
| Model | AFV10D S2 |
| Type | Duplexed Field Control Unit |
| Processor | NEC VR5432, 133 MHz |
| Main Memory | 32 Mbyte |
| Memory Backup | Battery-backed, up to 72 hours |
| Power Supply | 24 V DC, dual-redundant inputs |
| Power Consumption | 5.5 A at 24 V DC / Approx. 100 VA |
| Vnet/IP Interface | Dual-redundant |
| Node Connections | Up to 14 |
| Dimensions (W x H x D) | 482.6 mm x 221.5 mm x 205 mm (19-inch rack) |
| Weight | Approximately 2.48 kg |
| Operating Temperature | 0 °C to +55 °C |
Details
| Weight | 0.7 kg |
|---|---|
| Dimensions | 2.5 × 20.3 × 15.2 mm |
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