Product Description

The Yokogawa A1BA4D-05 is a high-reliability terminal board designed for use with the FIO (Field Interface I/O) system in CENTUM VP and ProSafe-RS control architectures. This board provides the physical interface for connecting field wiring to analog input and output modules, consolidating signals in an organized manner.

Supporting single and dual-redundant configurations, the A1BA4D-05 can handle up to 16 analog channels. Its DIN rail mount design enables efficient installation within marshalling cabinets, simplifying maintenance and troubleshooting of 4–20 mA process loops.

Technical Specifications

Application Scenarios

The A1BA4D-05 is commonly deployed in industrial marshalling cabinets across:

• Oil and gas facilities

• Power generation plants

• Chemical processing sites

It consolidates field signals from transmitters and valve positioners before interfacing with the DCS controller. Its support for redundant modules makes it suitable for critical process loops where continuous signal availability is essential.

FAQ

Q: Can this terminal board be used with digital I/O modules?
No, the A1BA4D series is specifically designed for analog signals. For digital I/O, use the A1BD series or other digital-specific terminal boards.

Q: Is the A1BA4D-05 compatible with redundancy for all 16 channels?
Yes, it supports wiring for two I/O modules operating in a redundant pair, ensuring that a module failure does not interrupt the flow of field data.