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HMS launches new IR-based air conditioning interface

HALMS, Sweden, 17 June 2021: HMS Networks has launched an IR-based Intesis AC interface, which the company said enables integration of any air conditioning unit, regardless of brand, into Modbus or BACnet building automation systems.

Saying that HVAC systems are usually the largest consumers of energy in a building, HMS said it is crucial for building owners to monitor and control these systems to save costs and energy. Additionally, the COVID-19 pandemic has made it increasingly important to find new ways of installing and using AC units, as ventilation and “clean air” have become a major concern, the company said. The air conditioning market is growing fast with new brands and different types of AC units constantly emerging, the company said. This, it added, makes it challenging for building owners to integrate AC-units into their specific Building Management System (BMS).

The Intesis offering, the company said, includes the most comprehensive portfolio of AC interfaces on the market, enabling monitoring and control of air conditioning units from any home or building automation system. The portfolio, it claimed, is now further strengthened through the launch of a universal IR-based Intesis AC interface for integrating AC units to Modbus- or BACnet-based automation systems. The new interface connects to the AC unit via the IR link, which is already used by most AC units to communicate with their remote control, it said. The Intesis IR-based AC Interface is already compatible with more than 100 IR remote controllers and their associated AC units, it added.

The new AC interface solution, the company said, is configured using the Intesis MAPS tool, which brings many advantages for the system integrator. With a project-based configuration, all the interfaces installed can be configured in a single MAPS template, making it easy to copy device configurations and set up new projects, it said. Thanks to the diagnostics function, it added, the commissioning process and any post-installation assistance is also simplified.

Carel launches pCOe

BRUGINE, Padua, Italy, 22 April 2021: Carel said it has widened its range of I/O expansions in the first part of 2021 with the development of a new digital input expansion board. I/O expansions are modules that can be added to a typical air conditioning application, to increase the number of inputs and outputs available on the controller and, consequently, optimise the flexibility and modularity of the solutions, the company explained through a Press release for the purpose of making the announcement of the launch.

Carel said one of the most common uses of the digital input expansion board involves ventilation sections comprising several fans with electronic motors; in this case, the speed of the individual devices needs to be monitored in order to check their operating status and act on the other fans accordingly, if one of them fails. Carel said it has for many years now offered all of the tools needed to support large systems, such as air-handling units or dry coolers, in which the fans are equipped with electronics that communicate via Modbus®, making it possible to directly monitor their operating status.

However, units that are smaller in size and capacity have simpler and more economical fans that do not feature serial communication and provide a pulse signal based on the rotation speed, which can be read by fast digital inputs, Carel said. This is the basis for the development of its new digital input expansion board, which the company described as an ideal solution for all cases where numerous digital inputs – including fast inputs up to 500 Hz – need to be read, however, while limiting the total number of I/Os and space required, adding only those that are needed.

One typical example involves so-called “in row units” used for cooling data centres. The highly compact units do not require complex device control architecture or specific sensors for their operation, Carel said. These feature a single ventilation section with at least eight fans in parallel, which need to be monitored individually. In this case, reading the signal is a simple and effective way to verify operation, as well as being a more economical solution than installing expensive air flow-rate sensors, Carel said.

The new expansion board, Carel said, features a high number of digital inputs to ensure maximum flexibility in different applications. This is essential on units where the main controller features a limited number of inputs and outputs, while multiple digital inputs need to be connected, for example to detect alarms or various signals.

The entire range of I/O expansions, Carel said, can be integrated into solutions based on the CAREL pCO and c.pCO programmable controller platforms, or into architecture using different controllers.

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