Description

Yokogawa AED5D-00 Terminal Boards

The Yokogawa AED5D-00, also cataloged as the AED5D Terminal Board, operates as a dedicated hardware component for digital signal termination within CENTUM VP and CENTUM 3000 Distributed Control Systems. It provides a direct electrical interface for up to 32 field devices, supporting single and dual-redundant I/O module architectures.

Hardware Specifications

Parameter	Specification
ModelBrand	AED5D-00
Product Type	Terminal Board for Digital Signals
Origin	Japan
Channel Capacity	32 Channels
Signal Compatibility	Digital Inputs / Digital Outputs, 24 VDC
System Redundancy	Single or Dual-redundant
Terminal Screw Type	M4 Screw Terminals
Compatible Signal Cables	AKB331 (32-ch), AKB337 (64-ch)
Insulation Resistance	≥ 100 MΩ at 500 VDC
Withstanding Voltage	500 VAC, 1 min
Weight	1.5 kg
Dimensions	Standard 19-inch rack mount compatible
OperatingTemp	-20 to +70 degC
PowerConsumption	Dependent on connected modules

Process Control Features

• Supports 4-20 mA HART loop protocol integration for digital I/O monitoring.
• Provides channel-to-channel isolation, preventing signal interference between adjacent digital channels.
• Designed for cold-junction compensation (CJC) stability when integrated with temperature-sensitive digital sensors in DCS loops.

Frequently Asked Questions

Q: Does the AED5D-00 support hot-swap of connected I/O modules?
A: Yes, the board allows field modules to be replaced without interrupting field wiring due to its dual-redundant design.

Q: What is the maximum cable length supported for digital inputs and outputs?
A: Cable length should follow Yokogawa standard digital I/O wiring guidelines, typically limited to maintain voltage drop below 10% for 24 VDC lines.

Q: Can the board be used with both 32-ch and 64-ch digital modules?
A: Yes. For 64-ch modules (ADV161/ADV561), two AED5D boards are required to interface fully with the module.

Field Installation Guidelines

• Mount the board on a 19-inch rack or marshalling panel using four M5 screws.
• Ensure proper grounding of the board and shielded cables to minimize electromagnetic interference.
• Route digital signal cables separately from high-current power lines to reduce cross-talk.
• Verify correct screw torque on M4 terminals to prevent loose connections under vibration.
• Maintain natural air convection; avoid obstructing airflow around the board.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems