Yokogawa A1BD5D-05 | Digital Terminal Board | CENTUM VP

Product Description

The A1BD5D-05 is a Yokogawa digital field wiring terminal board engineered for use within the CENTUM VP distributed control system architecture. It functions as the physical termination and signal handoff layer between field-side digital signals and CENTUM VP digital I/O modules, ensuring stable, low-noise transmission in demanding industrial environments.

Designed for cabinet-based installations, this terminal board supports up to 32 digital points and is compatible with both standard and redundant system layouts. The DIN rail form factor and pressure clamp terminals simplify installation and long-term maintenance while maintaining high electrical integrity.

As part of Yokogawa’s Field I/O (FIO) ecosystem, the A1BD5D-05 is commonly deployed in continuous-process industries where availability, wiring reliability, and system scalability are critical.

​Technical Specifications

• Model: A1BD5D-05
• Product Type: Digital Signal Terminal Board
• I/O Capacity: 32 digital signal points (DI/DO depending on connected module)
• System Compatibility: CENTUM VP Field I/O digital modules
• Redundancy Support: Single and dual-redundant configurations
• Mounting Method: DIN rail mounting (control cabinet installation)
• Terminal Type: Pressure clamp terminals
• Rated Insulation Resistance: Minimum 10 MΩ at 500 V DC
• Dielectric Strength: 500 V AC applied for 1 minute
• Operating Environment: Industrial control panels
• Suffix Code: 05 – Basic type, no explosion protection
• Weight: 0.8 kg

Key Engineering Characteristics

• Supports redundant digital I/O architectures to improve system availability
• Compact terminal layout optimized for high-density control cabinets
• Secure pressure clamp wiring minimizes loosening under vibration
• Electrical isolation performance suitable for harsh plant environments
• Designed to meet Yokogawa long-term reliability and lifecycle standards

Typical Application Scenarios

The A1BD5D-05 is used in process control installations requiring dependable digital signal termination, including chemical processing units, refinery control rooms, gas treatment facilities, and power generation plants. It is particularly suited for systems where redundancy and orderly field wiring are essential to operational continuity.

FAQ

Q: Is the A1BD5D-05 an I/O module? A: No. The A1BD5D-05 is a terminal board used to connect field wiring to CENTUM VP digital I/O modules. It does not perform signal processing.

Q: Does this model support explosion-proof installations? A: No. The 05 suffix indicates a basic type without explosion protection. Hazardous-area applications require additional external protection measures.

Q: Can it be used with redundant controllers? A: Yes. The terminal board supports both single and dual-redundant system configurations when paired with compatible CENTUM VP modules.