The controversy concerning the relative merits of open and closed control protocols is comparatively recent. It’s come to light due to the evolution from the smoke ventilation market towards more complicated systems.
Before the late 1990s, most Røgsuger ventilation systems comprised large regions of natural vents which usually either all opened up or all closed in zones. Controls were easy. These were predominantly pneumatic and needed a network of copper pipework, solenoid panels along with a central compressor. Springs and fusible links around the ventilators provided a failsafe mode of operation.
More lately there’s been an increase of huge-scale residential schemes and commercial towers with fire-fighting shafts. These require smoke control systems that can handle crossing fire compartments without compromising compartmentation and also the fireresistant qualities of walls and floors.
Which means that, for instance, if your fire occurs on a single level inside a multi-floor residential plan, a damper must open around the fire floor to permit smoke to become venting towards the outdoors. Simultaneously, dampers on the rest of the floors must remain closed to avoid smoke and fire distributing with other levels.
And also the control sequence includes a further degree of complexity: once one floor has gotten a security and reacted, the machine must then ‘lock out’ every other alarm signals. This really is to prevent multiple levels opening, that could allow smoke to spread in the floor of origin.
And there’s more: the fireplace service needs the capacity of the central override system either to instigate the machine operation or cancel and re-assign the machine operation.
Each one of these different control sequences become much simpler to manage utilizing a programmable operating-system for example Colt OPV.
This conforms towards the latest CE standards and offers a very flexible and powerful solution. You can use it to manage a variety of ventilators, dampers and fans in exactly the same like a BMS, and could be associated with addressable smoke as well as heat detectors, call points and override devices.
Each addressable unit could be controlled individually and included in the system, and as much as 10 remote fire-fighter’s override panels could be incorporated. And also the system could be re-configured anytime if alterations are created to the plan.
Like a house owner or developer, if you need to pick a qualified means to fix take control of your building’s smoke ventilation system, you will likely encounter the controversy concerning the benefits and drawbacks of open and closed control protocols. This is actually the first in a number of articles which i hope can help you navigate the bewildering quantity of information that’s available about them.
I’ll begin with the basics: exactly what is a protocol and just what will it mean whenever we express it is closed or open.
Protocol: simply put, this term describes the word what that components on the network use to talk with the central user interface.
Open protocol: this is where different manufacturers make use of the same language, to ensure that their devices and control panels are effectively interchangeable.
Closed Protocol: this is where the maker produces all of the devices and control panels for that complete network, developing a stand-alone system where there’s no compatibility with every other manufacturer’s components.