Molex SST-SR4-CLX-RLL | Remote I/O Link Module | Allen-Bradley ControlLogix | Honeywell I/O Integration

Product Description:

The Molex SST-SR4-CLX-RLL is a Remote I/O Link (RIO) communication module designed to integrate Honeywell I/O systems with Allen-Bradley ControlLogix controllers, providing a seamless connection for legacy Honeywell TDC 3000 or PlantScape I/O equipment. This high-performance gateway enables modern ControlLogix PLCs to interface with older Honeywell hardware, allowing for a smooth migration and continued use of existing field wiring and I/O racks during plant upgrades.

The SST-SR4-CLX-RLL module, which is a single-slot solution, installs directly into a standard ControlLogix 1756 I/O chassis, eliminating the need for additional external power supplies or separate gateway devices. It handles the protocol and timing requirements of the Honeywell Remote I/O Link, presenting I/O data to the ControlLogix processor as standard tags for efficient control and monitoring.

Key Features & Functions:

1. Seamless Integration for Legacy Systems:
   The SST-SR4-CLX-RLL module supports phased migrations by allowing plant owners to retain existing Honeywell I/O racks while upgrading to Allen-Bradley ControlLogix systems. This minimizes downtime and reduces installation costs, making it ideal for modernization projects.

2. Plug-and-Play Installation:
   Recognized as a "Generic 1756 Module" within RSLogix 5000 or Studio 5000, the module requires minimal configuration. Using Molex Console Software, users can easily map memory and I/O addresses for the ControlLogix processor to communicate with the Honeywell I/O.

3. High-Speed Data Transfer:
   The module is designed for high-speed data throughput and is capable of scanning multiple Honeywell I/O racks simultaneously. This ensures minimal latency for time-sensitive applications such as PID control loops and safety interlocks, which require rapid data exchanges.

4. Real-Time Diagnostics:
   The SST-SR4-CLX-RLL features a front-panel diagnostic LED system that provides immediate feedback on the module's status:

• COMM: Indicates active communication with the Honeywell link.

• SYS: Displays the internal health of the module.

• OK: Shows that communication with the ControlLogix backplane is active.

5. Robust and Reliable:
   With 500 VDC isolation between the network and backplane, the module offers strong protection against electrical noise, ensuring reliable operation in industrial environments.

Technical Specifications:

Installation & Configuration:

• Mounting: The SST-SR4-CLX-RLL installs into a single slot of the ControlLogix 1756 Chassis.

• Cabling: The module uses a shielded twisted-pair (STP) cable to meet Honeywell I/O Link specifications.

• Software: Configuration is managed through the Molex Console Software, which facilitates memory mapping and address configuration for the I/O points.

• Addressing: The module supports a full range of Honeywell I/O addresses and can be configured as the Master device on the link.

Applications:

The Molex SST-SR4-CLX-RLL is a vital tool for modernizing industrial control systems, enabling integration between Allen-Bradley ControlLogix controllers and legacy Honeywell I/O equipment. Ideal applications include:

• Legacy System Migration: Replacing older Honeywell controllers with modern ControlLogix systems while retaining existing Honeywell I/O racks.

• Industrial Automation: Enhancing communication between PLCs and field devices in high-speed, real-time applications such as PID control and safety interlocks.

Frequently Asked Questions (FAQ):

Q: What does the SST-SR4-CLX-RLL module do?
A: The SST-SR4-CLX-RLL is a Remote I/O Link (RIO) communication module that allows Allen-Bradley ControlLogix PLCs to communicate with Honeywell I/O systems, including legacy equipment such as TDC 3000 and PlantScape I/O.

Q: Can I use the SST-SR4-CLX-RLL for phased migration of Honeywell systems?
A: Yes, this module is specifically designed to facilitate phased migrations, allowing you to replace older Honeywell controllers with Allen-Bradley ControlLogix without the need to replace existing Honeywell I/O racks.

Q: How do I configure the SST-SR4-CLX-RLL?
A: Configuration is done through Molex Console Software, which simplifies the process of memory mapping and configuring the Honeywell I/O addresses.

Q: How does the SST-SR4-CLX-RLL improve system reliability?
A: The module offers 500 VDC isolation between the network and backplane, ensuring reliable operation and protection from electrical noise common in industrial environments.