Yokogawa AFV30D-S41151 Duplexed Field Control Unit

Configured for high-availability process control in CENTUM VP systems, the Yokogawa AFV30D-S41151 (AFV30D Duplexed Field Control Unit) provides direct physical and electrical execution of control logic and Vnet/IP network integration.

Suffix Breakdown & Model Matrix

Hardware Specifications

Process Control and DCS Characteristics

• 4-20 mA HART loop protocol: The unit manages FIO (Field I/O) communication, supporting pass-through of HART protocol data from field instrumentation to the control function for asset management and process monitoring.
• FOUNDATION Fieldbus / Profibus PA connectivity: Integration with the field control station allows for high-speed deterministic data exchange, supporting standardized digital bus communications within the CENTUM VP architecture.
• Channel-to-channel isolation: The modular design ensures electrical isolation between internal processing boards and field I/O segments, maintaining signal integrity and protection against common-mode noise across the I/O bus.
• Cold junction compensation (CJC): The unit interfaces with associated FIO modules that provide precise thermal compensation for thermocouple-based temperature measurement inputs.

Frequently Asked Questions

Q: What is the required recharge time for the memory backup battery?

A: The main memory backup battery requires a minimum of 48 hours of continuous system operation to reach a full recharge state after being fully depleted.

Q: Does the unit support hot-swapping of redundant modules?

A: Yes. The dual-redundant power supply and processor configurations are designed to support maintenance and module replacement while the unit remains operational, provided the standby module maintains control.

Field Installation Guidelines

• Mounting: Secure the AFV30D chassis into a standard 19-inch industrial rack. Ensure all mounting points are utilized to maintain mechanical stability and sufficient clearance for airflow to comply with the -10 deg C to +55 deg C operating temperature range.
• Grounding: Connect the chassis protective earth (PE) terminal to the cabinet-level ground bus using a low-impedance conductor. Proper grounding is mandatory to maintain signal integrity for the Vnet/IP communication interfaces.
• Wiring: Keep AC power input cables physically segregated from FIO signal wiring and Vnet/IP communication lines to prevent inductive noise coupling. Ensure all terminal connections are torqued to specification to maintain secure electrical contact.