Archive for category Combustion
Written by: A.J. Piskor
Traditionally, combustion control panels have been living in a hard-wired world. More often than not, the status of a burner system is communicated by indicator lights on a Flame Safeguard (FSG) terminal.
With the increased use of Programmable Logic Controllers (PLCs) controlling all aspects of a combustion system, customers are demanding more information from the FSG, as many operators manage their systems from a centralized control room.
While some customers have traded in their indicator lights for relays with dry contacts that feed back into their PLC, other customers are looking to simplify the communication between the FSG and PLC, while extracting more information on the operation of their burner system.
Here, we will go over some examples of technologies that are available today, and how you can get the information you need to where you need it.
Written by: A.J. Piskor
I was talking to a customer a few weeks ago, helping him with a Honeywell Flame Safeguard/scanner inquiry on a thermal oxidizer application. We started talking about the burner and he mentioned that he was tuning the burner based on the oxygen coming out of the stack.
This is a common practice for technicians working on boilers, radiant tubes, and immersion tube applications where 100% of the exhaust is coming from the burner and is not diluted by any process air. However, this is a bad practice to apply when working on an oxidizer, oven, dryer, or a multi-burner application.
A typical combustion system is complex to say the least. It is usually made up of various devices from multiple vendors that have to be combined and connected in order for the system to work. These systems are not typically flexible and are hard to change once the system has been set up.
Honeywell has come up with a completely new system that provides limitless flexibility with fewer components. This product has been designed as a fresh start for the combustion industry or in Honeywell’s words, “It’s time to wipe the SLATE clean.”
More and more people are using Modbus to get data from their instruments and controllers back into their control systems for reporting, alarming and troubleshooting.
And while I can’t be there to help you set up your Modbus master, I can give you 13 rules and some general practice advice for communicating to any Modbus RTU device.