Technical Specifications and Features

Serial Communication and Port Versatility

The T8123 provides three distinct serial communication channels to facilitate data exchange with external systems. It includes two RS422/485 ports that users can configure for either 2-wire or 4-wire operation, offering maximum flexibility for various wiring standards. A third port is dedicated to RS422/485 2-wire connections, which is ideal for simpler point-to-point links. These high-performance communication links allow the Trusted system to interact seamlessly with Distributed Control Systems (DCS) while maintaining strict signal isolation.

System Monitoring and Fault Detection

Reliability is enhanced through dedicated fault and fail connections for both Active and Standby processors within the redundant architecture. The T8123 includes specific processor diagnostics connections and PSU shutdown monitor inputs, allowing the system to detect and report power supply issues instantly. This proactive monitoring capability ensures that maintenance teams can address potential hardware failures before they impact the safety functions of the overall control system.

Precision Timing and Protocol Expansion

A key advantage of the T8123 is the option to connect IRIG-B122 and IRIG-B002 time synchronization signals directly to the processor. Accurate time stamping is critical for Sequence of Events (SOE) recording in hazardous industrial environments. Furthermore, this adapter provides the necessary hardware interface to enable MODBUS Master functionality on the Trusted communications interface. These features allow the T8123 to act as a central hub for time-critical and data-intensive industrial applications.

Installation and Maintenance Guide

Standard Installation Steps

1. Identify the correct slot at the rear of the Trusted Controller Chassis corresponding to the TMR Processor.

2. Align the T8123 adapter and press it firmly until the internal DIN connectors are fully engaged with the backplane.

3. Secure the adapter using the integrated mounting clips to ensure a vibration-resistant physical connection.

4. Wire the RS422/485 ports according to your network requirements, selecting between 2-wire and 4-wire configurations as needed.

5. Connect the IRIG-B signal source to the designated terminals if high-resolution time synchronization is required for your project.

Packing List

• 1 x Allen-Bradley ICS Triplex T8123 Processor Interface Adapter

• 1 x Installation Hardware Kit (Mounting Screws/Clips)

• Standard Shipping Methods: Fedex, UPS, DHL (Delivery typically within 3-5 business days)

Frequently Asked Questions (FAQ)

How many serial ports does the T8123 provide for external communication?

The T8123 features a total of three serial ports, including two configurable RS422/485 ports and one fixed 2-wire port.

Does this adapter support the connection of redundant power supply monitors?

Yes, the T8123 includes dedicated PSU shutdown monitor connections to track the health of the system power supply units.

Is the T8123 compatible with IRIG-B time synchronization standards?

The module is fully compatible with both IRIG-B122 and IRIG-B002 signals, providing precise time data for the industrial automation system.

Can I install the T8123 while the Trusted system is currently powered on?

While the T8123 connects to the rear of the chassis, we recommend following standard safety procedures for interface hardware installation.