Terminal Board Module Yokogawa AD5*D

Suffix Breakdown & Model Matrix

• AD5: Terminal board series identifier for DCS I/O termination architecture
• *: Configuration selector for protection and environmental options
  • 5: Standard industrial type without explosion protection
  • 6: Conformal coated version compliant with ISA G3 environmental resistance class
  • E: Explosion-protected configuration
  • F: Conformal coating plus explosion-protected configuration
• D: Design revision / board layout variant designation within AD5 family
• Optional suffix (/NTRY): Cable tray omission configuration (delivery option dependent)

HardwareSpecifications

Process Control Signal Routing Characteristics

FOUNDATION Fieldbus and Channel Isolation Architecture

The AD5*D terminal board operates as a passive termination layer within Yokogawa DCS signal chains, supporting structured wiring segregation between field instrumentation and control system I/O modules. Signal integrity is maintained through fixed-point screw terminal layout and controlled impedance routing via system cabling. Channel grouping is organized to reduce cross-interference between adjacent signal lines in high-density cabinet installations.

Channel-to-channel separation is implemented at the physical wiring level, relying on cabinet design and marshalling structure rather than active electronics. This architecture supports stable integration with FOUNDATION Fieldbus and conventional discrete I/O architectures used in CENTUM VP environments.

Frequently Asked Questions

Q: Does the AD5*D support hot-swap replacement?
A: The terminal board itself is passive; replacement requires field wiring isolation and system I/O module safe state before mechanical disconnection.

Q: Is any power supply required for operation?
A: No. The AD5*D operates as a passive termination interface and does not contain active electronics or power regulation circuits.

Q: Can it be used for mixed analog and digital wiring?
A: Yes. Signal segregation is defined at the system design level, while the board provides physical termination points only.

FieldInstallationGuidelines

• Ensure all field wiring is de-energized prior to terminal connection or removal
• Maintain shield continuity and terminate cable shields according to cabinet grounding philosophy (single-point or multi-point as specified by system design)
• Avoid routing high-voltage cables parallel to low-level signal lines within the same duct path
• Verify connector alignment with CENTUM system cables before applying mechanical force
• Observe minimum bend radius requirements for multi-core control cables to prevent conductor fatigue
• Tighten terminal screws to manufacturer-specified torque values defined in system cabinet documentation