Honeywell LCBS Connect, Руководство по применению, Страница: 24 / 44

LCBS CONNECT SOLUTION
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Outdoor Ambient Lighting
The application is the control of outdoor lighting loads, using a sensor in the outdoors, measuring light level of
outdoor ambient light, typically "foot-candles," and turning external lighting on and off. To be clear, external
light circuits will be turned on as outdoor ambient light level decreases and off as light level increases. This loop
will remained enabled 24 hours a day to permit external lights to be on in the event of dark, gloomy days and will
be on to enhance safe condition outside our building.
Setting up the application
To control outdoor ambient lighting, several basics need to be considered. First, an outdoor rated ambient lighting sensor
must be selected. These devices typically feature physical rating and mounting kit that will permit outdoor use. It is
important to follow instructions relating to how the sensor is "aimed" at the light source. Second, the control output of
these sensors need to match LCBS Connect controller rating; 0-10 VDC should be selected. Finally, these systems need
DC power. Make sure the 20 VDC power supply from LCBS Connect controller has enough current to power the sensor.
This is particularly critical if you've applied more than one sensor per LCBS Controller that needs power. Next, we need to
determine how to operate the lighting circuit to turn lighting load on and off. As with the previous application, we need to
examine the rating of the on-board relay on the LCBS Connect controller. As we now know, we find that we can control a
1.0 Amp control circuit at 24 VAC. If our customer is using a circuit breaker panel (highly risky, poor practice, dangerous)
or line volt switches to turn lighting on and off, one or more low voltage coil relays with appropriately sized line voltage
relay contacts will be required. For this application we will choose type as "Staged Conventional" and the PID action to be
"Indirect".
In summary, Accessory Loop control provides a creative way to automatically control a wide variety of electric consuming
equipment in a commercial building.
Accessory Loops Summary
You will need to clearly understand are going to control a "controlled device," how it is going to act in
response to a change in the measured value, and what you want the output to be. Further, if you are using
custom sensors, you need to know how the media you are monitoring responds to the media. The Accessory
Loop is debatably one of the most clever and capable control strategy that we supply with LCBS Connect
controllers, but it take commensurate planning. So, if you going to deploy a "roll your own" temperature, humidity,
pressure, lighting strategy, you will need to go to print them out, and write out the settings and parameters you want to
implement. Go to LCBS Connect wall module or LCBS Connect Remote User Interface and input desired values. It is
absolutely essential that you understand concepts that are presented above so that you can commission an effective
"accessory loop" strategy.
SERVICE ALERTING THEORY AND FUNDAMENTALS
As fuel costs have increased in the last half of the 20th Century and the first part of the 21st Century, coupled with the
cost of providing professional service to our HVAC service customers, the use of remote services to inform service
providers of improper HVAC operation has become more and more popular. Building owners also realize that faced with
the challenge of keeping their employees, patrons, and guests comfortable coupled with rising energy costs that it's
simply good business to employ HVAC service contractors who use remote technology to oversee and service their
buildings. As ubiquitous remote technology including processing capability and storage grow and are enhanced,
Honeywell has harnessed "LCBS Connect Cloud Technology" and discovered a way to analyze data extracted from HVAC
systems in light commercial buildings and create meaningful service information. This information can be used by
service providers to predict and prevent HVAC system failures and can also be used to provide evidence of how failures
were addressed and repaired. This leads to the service contractor's goal to become their customer's "trusted advisor."
At a basic level, the concept of service alerting can be applied to individual sensed temperature, humidity, and pressure
sensors. If sensed values become suspect, the Honeywell LCBS Controller provides processing data in The Cloud that
results in a service alert. This capability has existed for years and years, since the advent of 300 baud modems. What the
advent of the Honeywell Cloud has provided is ability to provide:
— Highly customized methods of sending English language messages to appropriate service technicians and to
common internet based communication devices, including smart phones, tablets, and laptop computers.
— Ability to log large amount of expertly summarized data that will allow service technicians to view and print data
they want to see it, in a highly consumable, attractive manner. This permits service contractors to provide "before"
and "after" objective, real data to their service clients.
— Data rules that will avoid "alert rains" resulting in data overload for recipients. This ranges from ability of service
technicians to set clear and cogent boundaries, hysteresis values to a Honeywell exclusive feature that reduces
duplicate incoming information from The Cloud that could potentially create stress for service dispatchers and
technicians.
— The ability to perform multivariable analysis based on streaming and historical data to allow us to predict and
diagnose specific HVAC anomalies, including Title 24 economizer and ventilation analysis.
Example