AFS30D | Yokogawa | CENTUM VP Duplexed FCU, 16MB, Vnet/IP & FIO Dual-Redundant

Product Overview

The AFS30D is a duplexed field control unit (FCU) for the Yokogawa CENTUM VP distributed control system. It houses a VR5432 RISC processor at 133 MHz with 16 MB of main memory, delivering real-time process control with dual-redundant Vnet/IP and FIO network interfaces. The unit is designed for cabinet-mounted installations where high availability and fault tolerance are critical.

Key Specifications

• System: Yokogawa CENTUM VP
• Processor: VR5432 RISC CPU, 133 MHz
• Main Memory: 16 MB
• Memory Backup: Battery-backed, max. 72 hours retention
• Battery Recharge Time: Minimum 48 hours
• Power Supply Options:
  • 100–120 V AC, 50/60 Hz (250 VA)
  • 220–240 V AC, 50/60 Hz (400 VA)
  • 24 V DC (4.5 A)
• Network Interfaces: Dual-redundant Vnet/IP, dual-redundant FIO
• FCU Status Contact: 2 terminals (NC, C), 30 V DC, max. 0.3 A
• Mounting: Cabinet-integrated, 19-inch rack compatible
• Dimensions: 50 × 50 × 40 cm
• Weight: 10 kg
• Operating Temperature: -10°C to +55°C
• Humidity: 5% to 95% RH, non-condensing
• Protection Class: IP20
• Compliance: CE, RoHS

Features & Benefits

1. Dual-Redundant Architecture: Redundant processors, power supplies, and network paths ensure continuous control during any single hardware fault.
2. Real-Time Vnet/IP & FIO: High-speed control network interfaces support deterministic data exchange with operator stations and field I/O.
3. 72-Hour Memory Retention: Battery-backed RAM preserves control strategy and process data during extended power outages.
4. Flexible Power Options: Supports AC (100–120V or 220–240V) and DC (24V) inputs to match global plant power standards.
5. Compact Cabinet Design: Integrated cabinet form factor simplifies installation and reduces control room footprint.

FAQ

Q: What is the difference between AFS30D and AFS30S?
A: The AFS30D is a duplexed (redundant) field control unit. The AFS30S is a single (non-redundant) field control unit for standard availability applications.

Q: How many node units can the AFS30D support?
A: The AFS30D supports up to 10 local node units and 9 remote node units per FCU, with a maximum of 8 units per ER bus.

Q: What happens when the battery fails?
A: A battery failure triggers a diagnostic alarm. The FCU continues operating but will lose memory data if power is cycled. Replace the battery immediately upon alarm.

Installation Guide

• Install the FCU cabinet in a climate-controlled equipment room with adequate ventilation.
• Connect redundant power feeds (AC or DC) to the designated power terminals.
• Connect Vnet/IP cables to both primary and redundant network switches.
• Connect FIO cables to local and remote node units.
• Wire the FCU status contact to an external alarm or indicator lamp.
• Verify all LEDs indicate normal operation before downloading the control strategy.

Selection Tips

• Availability Requirements: Specify the AFS30D for processes requiring high availability or SIL-rated architectures. For non-critical loops, the AFS30S offers a cost-effective alternative.
• Power Standard: Select the appropriate suffix code for your plant voltage: -11 for 100–120 V AC, -12 for 220–240 V AC, or -14 for 24 V DC.
• Node Planning: Calculate total local and remote node requirements to ensure the 10/9 node limit is not exceeded.