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Hood Controllers
Each Hood Controller houses up to four temperature sensors and one set of optics for
temperature and effluent detection. By default there is not a Device Object present for
each Hood Controller, but the system can be configured to do so. Below is a list of the
Hood Controller Objects.
Temperature 1 through Temperature 4
Each Hood Controller has one Analog Value that represents the current temperature of
the related temperature probe in Fahrenheit. The temperature readings are updated
once every 30 seconds.
Optics Tripped
The Optics Tripped Binary Value is active if the Hood Controller’s optics have detected
effluent or if there is an optic fault. If the Optics Tripped value is active, then any
associated fans that are on will be running full speed.
Virtual Input Module
A Virtual Input Module is a virtual device to provide a means to add digital inputs to the
system that can be controlled via BACnet. Below is a list of the Objects available on the
Virtual Input Module.
Digital Input 1 through Digital Input 4
The Virtual Input Module has four digital inputs that mimic the operation of the physical
digital inputs on the System Controller. See the “Digital Input Status” section under the
System Controller on page 5 for a description of the different digital input configurations.
The Intelli-Hood system has a BACnet Watchdog timeout that is used to reset the Virtual
Input Module’s digital inputs if no BACnet communication has been received in a given
amount of time. See the BACnet Watchdog description on page 20 for more details on
this configuration parameter.
Analog Input 1 through Analog Input 4
The Virtual Input Module has four analog inputs that mimic the operation of the physical
analog input on the System Controller. See the “Analog Input Status” section under the
System Controller on page 8 for a description of the different analog input configurations.
The Intelli-Hood system has a BACnet Watchdog timeout that is used to reset the Virtual
Input Module’s analog inputs if no BACnet communication has been received in a given
amount of time. See the BACnet Watchdog description on page 20 for more details on
this configuration parameter.
