AFV30D-S41152 Duplexed Field Control Unit Yokogawa

Suffix Breakdown & Model Matrix

The supplied documentation defines the ordering structure for the AFV30D series.

Hardware Specifications

Channel Isolation and Process Instrument Connectivity

The AFV30D architecture is designed for distributed process control within the Yokogawa CENTUM VP platform. Communication between the Field Control Unit and connected node units is performed through redundant Vnet/IP interfaces. ESB Bus expansion requires EC401 ESB Bus Coupler Modules installed in Slot 7 and Slot 8 for redundant processor configurations, while ER Bus systems require EB401 ER Bus Interface Master Modules installed according to the specified slot arrangement. The documentation also supports integration with distributed process instrumentation through the CENTUM VP FIO architecture, where channel isolation is implemented by the associated field I/O modules rather than the FCU itself.

Frequently Asked Questions

Q: Does the AFV30D support redundant processor operation?

A: Yes. The FCU is designed for dual processor operation using two CP451 processor modules together with dual-redundant Vnet/IP communication and redundant power supply modules.

Q: How many node units can be connected to one FCU?

A: A maximum of 14 node units can be connected. Within this limit, no more than 9 ESB Bus node units are supported.

Q: Is hot replacement of modules specified in the supplied documentation?

A: The supplied documentation does not specify hot-swap capability. Module replacement procedures should follow the applicable CENTUM VP maintenance documentation.

Field Installation Guidelines

• Install the chassis on a standard 19-inch equipment rack using the specified M5 mounting hardware.
• Connect the protective earth conductor to the designated M4 grounding terminal before applying power.
• Use CAT5e or higher UTP cable for Vnet/IP network connections through an industrial Layer 2 switch.
• Install EC401 modules in the required slots when ESB Bus node units are connected. For redundant processor systems, install EC401 modules in both Slot 7 and Slot 8.
• Install EB401 interface modules only in the slot positions specified for ER Bus configurations and leave the adjacent slot empty where required by the installation rules.
• Route communication cables separately from power wiring to reduce electromagnetic coupling. Ground cable shields according to the plant grounding standard.