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MUA Damper
If the Make-Up Air unit has a damper that closes when the Make-Up Air unit is not
running, then the damper needs to be opened before the fan should run. A MUA Damper
digital output is then used to signal the damper to open. If there is any input which
requests an associated Hood Group to turn on its fans (Fans button from either the
Touchpad or Auxiliary Touchpad, Schedule, Remote On/Off digital input), then a MUA
Damper digital output is energized. This can then trigger the damper to open and allow
fan operation.
Temperature Fault
A Temperature Fault digital output will be energized if there is a fault with any
temperature probe in any associated Hood Group.
Optic Fault
An Optic Fault digital output will be energized if there is a fault with any optics in any
associated Hood Groups.
VFD Fault
A VFD Fault digital output will be energized if there is any VFD Fault (lost communication
or VFD tripped due to a fault) on any VFD in any associated Hood Group.
System Fault
A combination digital output that will be energized on multiple fault situations. A System
Fault digital output will be energized if there is either a Temperature Fault, Optic Fault,
VFD Fault, or an active External Fault digital input on any associated Hood Group.
24/7
A 24/7 digital output is energized whenever the Intelli-Hood system is powered up and
has begun normal operation.
Analog Input Status
The is one physical analog input on the Intelli-Hood System Controller. The analog input
can be configured in either 0-10VDC or 0-20 mA operation and can affect any Hood
Group in the system. The Analog Input Status reports the current value of the system’s
physical analog input as a percentage. The following is a short description of the different
modes of operation for the analog input.
