AFS30D-H4121 Yokogawa Field Control Unit

AFS30D-H4121 Yokogawa CENTUM VP Field Control Unit

AFS30D-H4121 Yokogawa CENTUM VP Field Control Unit

Availability: 20 left in stock

Yokogawa AFS30D-H4121 Field Control Unit Configured for real-time control logic execution and deterministic field-level I/O management in CENTUM VP platforms,...

SKU: AFS30D-H4121

Manufacturer: Yokogawa
Product No.: AFS30D-H4121
Product Type: Field Control Units
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 8000g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AFS30D-H4121 Field Control Unit

Configured for real-time control logic execution and deterministic field-level I/O management in CENTUM VP platforms, the Yokogawa AFS30D-H4121 (AFS30D Duplexed Field Control Unit) provides direct physical/electrical execution.

Hardware Specifications

Parameter	Specification
Model	AFS30D-H4121
Brand	Yokogawa
Origin	Japan
Weight	8 kg
Dimensions	207 x 265.9 x 482.6 mm
Operating Temp	0 to 55 deg C
Power Consumption	24 VDC (+10% / -10%), ~80 W
Processor	133 MHz RISC (VR5432)
System Memory	16 MB / 32 MB battery-backed (up to 72 hours retention)
Battery Recharge Time	48 hours for full charge
Redundancy Architecture	Dual CPUs, dual power modules, dual buses (failover latency <= 10 ms)
Communication Interfaces	Dual Vnet/IP, dual ESB bus, dual Ethernet (10BASE-T / 100BASE-TX)
Status Contact Output	2 terminals (NC, C), rated 30 VDC; opens on FCU failure

Process Control & Network Protocol Execution

The AFS30D-H4121 executes field automation tasks over dual Vnet/IP real-time control networks and ESB bus interfaces. Channel-to-channel isolation and hardware redundancy maintain signal integrity between field devices and Human Interface Stations (HIS). The unit manages up to 8 NIU nodes or 256 I/O points across configurable control cycles ranging from 100 ms to 1 s. Integrated battery backup preserves internal system memory during power interrupts, while a dedicated status contact output opens to signal hardware fault states to external safety circuits.

Frequently Asked Questions

Q: What is the behavior of the internal status contact during an FCU failure?

A: The two output terminals (NC, C) open when an internal FCU fault occurs, providing a hardware-level dry contact signal rated for up to 30 VDC.

Q: How long must the backup battery charge to maintain main memory during a total power loss?

A: A full battery charge cycle requires 48 hours of continuous DC power to guarantee memory retention for up to 72 hours during outage conditions.

Q: What is the maximum switchover latency when a CPU failover event triggers in duplex mode?

A: The duplex system executes seamless bumpless transfer between active and standby processors within <= 10 ms.

Field Installation Guidelines

Mount the unit securely into a standard panel or cabinet enclosure using designated mounting points to maintain adequate airflow around the assembly. Connect dual independent 24 VDC power feeds directly to the power terminals to preserve full redundancy. Verify that network connections to dual Vnet/IP and ESB communication lines utilize shielded twisted-pair cables with proper shield grounding at a single panel ground point. Address each node correctly before power-up, and allow the system to complete diagnostic self-checks via onboard LED indicators prior to commissioning.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.