Trend Control Systems, the leading international manufacturer and supplier of state-of-the-art Building Energy Management Systems (BEMS), has announced that its pioneering range of IQ®4 controllers has been complemented by the introduction of an IO module with override functionality, which is available in both analogue and digital variants.
The IQ®4 Hand/Off/Auto (HOA) modules make it possible to override plant when the controller/strategy is not achieving the results required for whatever reason. The modules can also be used to override plant to test if it is working correctly, for instance to check that boilers are fully operational before they are switched on after summer. Additionally, the HOA modules can be used for commissioning, as they work straight out of the box with no need to address the module or connect it to an IQ®4 controller.
HOA modules have been designed to offer ease of use. Trend has produced labels that clip over the modules to give users the ability to individually identify each switch so even a non-specialist can easily identify what needs to be overridden. Both module options utilise a two-state operation and require no tools to operate – pressing the knob takes the channel in or out of override, and twisting the knob sets the status/value of that channel.
Continue reading Trend adds Hand/Off/Auto IO modules to its IQ®4 range at Specifier Review.
from Specifier Review http://bit.ly/2HRHJly
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