68 TC5-1N5FAB rev.06
GLOSSARY
BANDWIDTH: Thetemperature interval withinwhichthe variable-speed
fans of a given stage increase or decrease in speed proportionally to the
temperature.
CASCADING HEATERS: Heaters operate in a sequence. As the
averageroomtemperaturedrops, additional heatersareturnedon as
needed.
CURTAIN DEAD BAND: Thedeadbandis the temperaturedifference
between the opening and closing temperatures of the curtains. Within
this interval, the curtains are at rest.
DEFAULT VALUE: Atypical parameter setting defined at the factory.
DIFFERENTIAL: Thedifferentialis thetemperaturedifference between
the moment the constant-speed fans or heating units of a given stage
start running and the moment they return to a stop.
HYSTERESIS: A hysteresis is used to smooth the transition from one
state to another. For example, when the temperature drops to the cut-off
point for a stage of constant-speed fans, the fans will actually be cut off at
slightly less than the cut-off point. This way, if the temperature fluctuates
around the cut-off point without dropping significantly below it, the control-
ler will not oscillate between two states. For example, if the hysteresis is
0.3°F and the stage 2 fans are programmed to be cut off at 75°F, the cut-
off will actually occur at 74.7°F.
MINIMUM VENTILATION CYCLE: Whentheroomtemperature is below
the set point, the Stage 1 fans operate intermittently to provide minimum
ventilation to the room.
MINIMUM VENTILATION SPEED CURVE: WhenStage1operates
variable-speed fans, they will run at minimum speed during the minimum
ventilationcycle. Theusercandefinea minimum ventilation speed curve
to adjust the Stage 1 minimum speed automatically over a given time
period. Theminimumspeedincreasesovertime as the animals grow.
OFFSET: An offset is a temperature difference from the set point that
normally defines a cut-off point for a stage operation. For example, a
heater offset of 2°F means the heaters will turn off at 2°F below the set
point.
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TC5-1N5FAB rev.06
TC5-1N5FAB
HIGH/LOW TEMPERATUREALARM OUTPUT
FULL-SPEED FAN START-UP
In order to overcome the inertia of the ventilation system components and
de-ice the fan blades in cold weather conditions, the controller supplies
maximumvoltagetothevariable speed fansduringthe2seconds immedi-
ately following each start-up.
FOURINDEPENDENT TEMPERATURE PROBE INPUTS
Uptofour temperature probescanbe connected tothecontroller in orderto
obtain a more accurate reading of the average room temperature and a
faster reaction time.
OUTSIDETEMPERATURE COMPENSATION ON CURTAINSPEED
Curtain opening and closing times can be decreased as a function of out-
sidetemperature.
OVERLOADAND OVERVOLTAGEPROTECTION
Fuses and other protection devices are installed on the outputs of the con-
troller to protect its circuitry in the case of an overload or overvoltage.
COMPUTERCONTROL
The controller can be connected to a computer, thus making it possible to
centralizethemanagementofinformation and diversify controlstrategies.
CONTROL OF AIR INLET MOVEMENT
IftheTC5-1N5FABisused incombinationwith aPF-5Bcontroller,themove-
mentoftheair inletscanbecoordinated with theoperationof the fansusing
a potentiometer located on the panel drive. This allows the air inlets to be
adjusted correctly, without the influence of uncontrollable factors such as
windorairfromadjoining rooms.
TEST MODE
Atestmodeallows you to simulatetemperaturechangesand verify control-
lerperformance.
