Position - Agrowtek GrowControl GCX Instruction Manual

Position

The position function is used to ontrol reversible motors used in shade and black-out curtains, ridge vents,
side-wall vents and similar applications. MX motor controllers are required to use position functions.
Position is controlled in MX motor controllers by tracking how long the motor is moving in the forward or
reverse direction. The "travel time" programmed into the MX controller is the total amount of time it takes for
the motor to move between the fully opened and fully closed positios. If the system needs to open from 0%
to 50% it will operate the motor in the forward (open) direction for half of the travel time.
Position Tracking
The travel time parameter and current position
are stored in the MX motor controller.
See the device information page.
If an operator manipulates the manual override
knob, the position will continue to be updated
by the MX controller and the position relayed
back to the GCX control system. Upon returing
the knob to the Auto position, the system will
regain control of the MX controller.
Equipment
Assign sensors and a motor controller which will operate the reversible motor on the equipment tab.
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2
3
1. Motor Controller
2. Function Mode
3. Position Limits
Position functions can be be con gured for shade/blackout curtain or ventilation type control.
Shade/Blackout Curtain
In this mode the position can be by a static setting, a temperature position and a light intensity position.
Ventilation
In this mode the position can be modulated to variable positions based on rising temperature.
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Select an MX motor controller to operate with the position function.
Shade Curtain: 0% Open = Full Shade, 100% Open = No Shade
Ventilation: 0% Open = Vent Closed, 100% Open = Vent Open
Final minimum and maximum position limits for the function.
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