Breathing New Life into Legacy Systems: Satchwell Retrofit Solutions

Retrofitting vs. Upgrading Legacy Systems

When it comes to legacy building management systems (BMS), facility managers often face the challenge of improving outdated technology. The decision between retrofitting or upgrading is critical, especially in older buildings.

• Upgrading typically involves a complete system replacement, including new control panels, sensors, actuators, and wiring. This approach can deliver the latest technology but comes at a significant cost and often requires substantial downtime to install and configure. Moreover, it can be highly disruptive, especially when it involves rewiring or replacing infrastructure that still functions adequately.
• Retrofitting, on the other hand, focuses on modernising the existing technology without replacing the entire system. For Satchwell systems, retrofitting allows you to retain existing control panels, sensors, wiring, and actuators while upgrading only the core components, such as control modules or communications infrastructure. By doing so, buildings can be modernised to improve efficiency and functionality without the need for a full overhaul. This not only reduces costs but also minimises downtime and operational disruptions.

What is Satchwell Retrofit?

Satchwell retrofit solutions provide a practical way to upgrade older building management systems like the Satchwell BAS2000, 2800, and Sigma without needing to replace all the associated wiring, sensors, and other infrastructure. Retrofitting these systems enables building owners to extend the life of their existing equipment while adding new functionalities, improving energy efficiency, and ensuring compatibility with modern control technologies.

Using Modbus RTU communications, a common protocol in BMS, Satchwell retrofits offer seamless integration with Tridium JACE or other modern controllers. 

Simplify your retrofit process and start saving on operational costs with Tyrrell Products! We offer a wide range of Satchwell retrofit solutions available for purchase directly on our website.

Satchwell UNC 196 UO Card (Modbus Upgrade)

One of the core components in Satchwell retrofitting is the Satchwell UNC 196 UO Card. This 16-channel output card is designed to directly replace existing control modules in Satchwell BAS2000, 2800, and Sigma systems. It enables the connection of modern, web-based controllers via Modbus RS-485, allowing older systems to communicate with contemporary BMS solutions.

Key features of the UNC 196 UO Card include:

• 16 configurable outputs, with both voltage (0-10V) and current-control (0-20mA) options.
• Support for latching relay digital outputs, preserving compatibility with existing relay modules.
• Modbus communication facilitates seamless integration with third-party equipment, including air handling units and chillers.
• Easy configuration via DIP switches or a software setup tool for commissioning in the absence of a master controller.

Summary

Satchwell retrofit solutions are an excellent option for modernising legacy building management systems without disrupting the building operations. The ability to retain existing wiring, sensors, and actuators makes retrofitting a more practical solution, providing a streamlined upgrade path that preserves the existing infrastructure while integrating modern technology.