Configured for high-availability process management in CENTUM CS 3000 networks, the Yokogawa AFG30D-H4123 (AFG30D Duplexed Field Control Unit) provides direct physical/electrical execution of fault-tolerant safety and control logic.

Suffix Breakdown & Model Matrix

• AFG30D: Base module designation for a duplexed field control unit (FCU) designed for critical DCS environments.
• H4123: Suffix indicating the specific hardware revision for processor speed, memory configuration, and redundant power management support.

Hardware Specifications

Industrial Control and Redundant Processing

The AFG30D-H4123 utilizes a VR5432 processing core to facilitate deterministic control execution. The duplexed architecture provides seamless failover capability, ensuring that process continuity is maintained if a primary unit encounters a critical fault. The system supports complex connectivity, hosting up to 10 local node units and 9 remote node units per FCU. Memory integrity is secured by a battery-backed system capable of sustaining data for up to 72 hours, reinforcing the unit's suitability for high-stakes oil, gas, and power applications where power failure recovery is mission-critical.

Frequently Asked Questions

Q: Can the AFG30D-H4123 perform a hot-swap of a single controller unit during system operation?

A: Yes. The duplexed design of the AFG30D allows for the removal and replacement of a non-active controller unit without interrupting the control logic executed by the redundant partner, provided the system is synchronized.

Q: What is the required recharge cycle for the internal battery backup?

A: The battery requires a minimum of 48 hours to reach full recharge capacity; ensure the unit remains energized for this duration following a prolonged power failure to restore full data protection.

Field Installation Guidelines

1. Mount the duplexed FCU in a vibration-free control cabinet, ensuring that both primary and secondary units have adequate clearance for airflow.
2. Connect the redundant V net and dual-redundant ESB bus cabling to the rear-mounted interfaces, ensuring that locks are fully engaged.
3. Supply power to the FCU using stable 100-120 VAC, 220-240 VAC, or 24 VDC sources, ensuring all power connections are rated for the respective loads (250 VA, 410 VA, or 8 A).
4. Integrate the contact output terminals into the plant's alarm or master-trip monitoring circuit to receive immediate notification of system-level faults.
5. Verify that the system software identifies both controllers in the duplexed pair as "Healthy" and "Synchronized" prior to enabling final control loops.