MITSUBISHI ELECTRIC - Advanced Energy Saving Control Through
Mitsubishi Electric has launched two new air conditioning controllers to
strengthen their market leading controls product range and provide advanced
control options via newly designed and simplified high resolution user
interfaces. The new controllers allow more users to benefit from the latest
developments in easy-to-use controls for energy saving features as well as for
the more standard controller operations.
The AT-50A is Mitsubishi Electric’s new MNET centralised controller which offers
the ability to control and monitor 50 indoor units via a compact user-friendly
touch screen interface. The AT-50A controller adds to the company’s existing
AG150 centralised controller offering and provides many of the same features.
“We have designed and positioned the new AT-50A controller to answer the market
demand for increased functions at a very cost-effective price, delivering a
unique new solution for both installers and operators,” explains Martin Fahey,
Mitsubishi Electric’s Product Marketing Manager.
The compact and well-designed new AT-50A is only 18cm wide by 3cm deep and can
be mounted directly onto the wall, making it easy to install without the need
for an indent or back box. This also gives installers the option of
retro-fitting the new controller to bring advanced functionality and ease of use
to existing installed systems.
Installation becomes even easier and more cost-effective if the unit is used to
control just one City Multi VRF air conditioning system, as the AT-50A can be
installed onto the indoor unit MNET line and takes its power from here. With
more than one City Multi system, a separate additional power pack is required by
M Series and Mr Slim air conditioning systems are also connectable via the
relevant MNET adapters.
In addition, Mitsubishi Electric has designed the controller to allow Lossnay
heat recovery ventilation units to interlock with the AT-50A meaning that energy
can be saved when Lossnay heat recovery ventilation is in operation.
For operators, the AT-50A comes with physical buttons to make the operation of
basic functions quick and effective. The collective ON/OFF button will turn off
all indoor units connected to the controller and the two dedicated function
buttons can be assigned to a pre-programmed operation to allow control from a
These can be programmed to offer a selection of tasks to perform a collective
operation of all indoor units, such as setting the mode, prohibiting the remote
controllers or setting all units to night setback mode.
“Within the controller menus there are also several levels of user access,
including a home screen, menu and service screens, so we provide the operator
with the ability to monitor and control the air conditioning or third party
equipment in a simple, easy-to-read layout whilst enforcing relevant password
security where required,” adds Fahey.
The controller has several energy saving functions which can be used to
centrally control and reduce energy usage across the whole system. The AT-50A
has set point limit function which can be used to restrict users from selecting
very high or very low heating or cooling set points.
The unit also has two weekly schedules, allowing the controller to be set up for
both a summer and winter operating pattern providing the ability for annual
scheduling. Night set back control is also possible on the AT-50A which can be
used to dramatically reduce energy consumption during low demand periods.
Also new to the market is Mitsubishi Electric’s PAR-30MAA local controller,
which provides all standard control functions but also offers advanced functions
that are ideal for installers or contractors commissioning a system, performing
maintenance checks or looking for errors.
The PAR-30MAA is the latest in the range of re-designed controls and provides a
new clearer higher resolution LCD backlit screen. The user interface has been
completely overhauled from the previous generation, simplifying the operation,
setup and navigation through the menus and options.
The PAR-30MAA controller now only has four main buttons with four dynamically
changing function buttons directly underneath the impressive new screen.
A completely new option for the PAR-30MAA is the ability to configure the
controller in either a simplified mode (mode, set point and fan speed control
only) or in advanced mode providing full access to all of the controller
Accessed via the maintenance password on the PAR-30MAA is a new ‘smooth
maintenance’ function which is available when the controller is connected to any
Mr Slim outdoor unit. When initiated, this function can be targeted to any
connected outdoor unit to obtain detailed service and operational data.
“This provides maintenance engineers with a quick and simple way to monitor the
system and gather all the essential running data necessary to make inspection,
maintenance and diagnostics much easier,” explains Fahey.
Again, the new PAR-30MAA local controller comes with a range of built in energy
saving functions, such as set point limitation, auto set point return and weekly
Also provided by the controller is the option to set up a Duty Standby system
controlling two Mr Slim systems, enabling them to work together as one to
provide continuous operation in critical applications such as server rooms.
“These two new controllers extend the comprehensive range available to our
customers and bring advanced functionality to make the installation, operation
and maintenance of our equipment even easier and more efficient,” adds Fahey.
“At Mitsubishi Electric we are determined to develop products that help
customers reduce their energy consumption, and by introducing these simple to
use controllers with added, advanced energy saving functions, operators will be
able to lower their carbon footprint,” he ends.
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