Technical Overview

The AER4D-00 is a high-density RTD terminal board for Yokogawa Distributed Control Systems (DCS). It serves as a robust interface between field RTD sensors and I/O modules, providing precise temperature data acquisition for up to 16 channels.

Designed for both simplex and dual-redundant configurations, the AER4D-00 ensures continuous monitoring of critical process temperatures while maintaining signal integrity.

Detailed Specifications

Operational Capabilities

• Organizes and terminates field RTD wiring for 16 channels

• Reduces EMI and resistance variations to maintain temperature accuracy

• Supports dual-redundant configurations to split signals to two I/O modules for continuous monitoring

• Optimized for internal cabinet mounting where external surge protection is already provided

Technical FAQ

Does the AER4D-00 support 4-wire RTD sensors?
Standard design is optimized for 3-wire RTDs. For 4-wire applications, consult wiring schematics for compatible cross-terminal arrangements.

What does the “-00” suffix indicate?
It represents the base hardware revision without integrated surge absorbers, suitable for standard control room installations prioritizing cost and space efficiency.

Can this board be used for thermocouples?
No. The AER4D-00 is specific to RTDs. Thermocouple inputs require a dedicated terminal board such as AED5D, which includes cold-junction compensation.