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AssigneeEvolution Controls Inc.
InventorsDavid Lee Haessig, Ronald Sai Kit Yip, Roger Hort, Joshua Lee Welton
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A method and apparatus for a visual local controller (VLC) for a variable speed motor (VS Motor) or other controlled device in an HVACR system to display the output in engineering units instead of the traditional percent of motor output or similar output, and to limit the output to a range between a high limit and a low limit, is disclosed. An engineering units display allows end users to directly see output as performed by the connected HVACR equipment. In place of zero to one-hundred percent output, the user may see torque, CFM, actual control voltage or other engineering units associated with the controlled HVACR equipment. Limiting the output allows the output to be constrained between high and low output limits to keep the connected device operating within a safe range for the HVACR equipment.
1—A visual local controller for heating, ventilating, air-conditioning, and refrigeration systems comprising:
2—The visual local controller of claim 1 further comprising an input to receive an input signal from the controlled heating, ventilating, air-conditioning, and refrigeration device.
3—The visual local controller of claim 2 wherein the display unit displays the input signal.
4—The visual local controller of claim 2 wherein the input signal comprises a signal from a tachometer expressed as pulses per second.
5—The visual local controller of claim 1 wherein one of the plurality of values of the digital adjustment profile comprises a pulses per second value substantially equal to the pulses per second value from the input signal.
6—The visual local controller of claim 1 further comprising a run output to turn on the controlled heating, ventilating, air-conditioning, and refrigeration device.
7—The visual local controller of claim 1 wherein the display unit further displays a decimal point.
8—The visual local controller of claim 1 wherein the display unit further displays engineering units.
9—The visual local controller of claim 8 wherein the display unit further displays a decimal point.
10—The visual local controller of claim 1 wherein the display value comprises a number of revolutions per minute of the controlled heating, ventilating, air-conditioning, and refrigeration device.
11—The visual local controller of claim 1 wherein the display value comprises a torque value of the controlled heating, ventilating, air-conditioning, and refrigeration device.
12—The visual local controller of claim 1 wherein the display value comprises a control voltage value of the controlled heating, ventilating, air-conditioning, and refrigeration device.
13—The visual local controller of claim 1 wherein the display value comprises a mass airflow value of the controlled heating, ventilating, air-conditioning, and refrigeration device.
14—The visual local controller of claim 1 wherein the display value comprises a gallons per minute value of the controlled heating, ventilating, air-conditioning, and refrigeration device.
15—The visual local controller of claim 1 wherein the display value comprises a damper degree angle of the controlled heating, ventilating, air-conditioning, and refrigeration device.
16—The visual local controller of claim 1 wherein the non-volatile memory is integrated with the microcontroller on the same integrated circuit.
17—The visual local controller of claim 1 wherein the controlled heating, ventilating, air-conditioning, and refrigeration device comprises a motor.
18—The visual local controller of claim 17 wherein the motor comprises a variable speed motor.
19—The visual local controller of claim 1 wherein the power connection comprises a 24 Volt power connection.
20—The visual local controller of claim 1 wherein the controlled heating, ventilating, air-conditioning, and refrigeration device comprises an air valve.
21—The visual local controller of claim 1 wherein the controlled heating, ventilating, air-conditioning, and refrigeration device comprises a water valve.
22—The visual local controller of claim 1 wherein the controlled heating, ventilating, air-conditioning, and refrigeration device comprises a temperature controller.
23—The visual local controller of claim 1 wherein the controlled heating, ventilating, air-conditioning, and refrigeration device comprises a linear actuator.
24—The visual local controller of claim 1 wherein the controlled heating, ventilating, air-conditioning, and refrigeration device comprises a pressure regulator.
25—The visual local controller of claim 1 wherein one of the plurality of values of the digital adjustment profile comprises a minimum value allowed for the output signal provided to the controlled heating, ventilating, air-conditioning, and refrigeration device.
26—The visual local controller of claim 1 wherein one of the plurality of values of the digital adjustment profile comprises a maximum value allowed for the output signal provided to the controlled heating, ventilating, air-conditioning, and refrigeration device.
27—The visual local controller of claim 26 wherein one of the plurality of values of the digital adjustment profile comprises a minimum value allowed for the output signal provided to the controlled heating, ventilating, air-conditioning, and refrigeration device.
28—A visual local controller for heating, ventilating, air-conditioning, and refrigeration systems comprising:
29—The visual local controller of claim 28 wherein the display unit displays the input signal.
30—The visual local controller of claim 28 wherein the controlled heating, ventilating, air-conditioning, and refrigeration device comprises a motor.
31—The visual local controller of claim 30 wherein the motor comprises a variable speed motor.
32—The visual local controller of claim 31 wherein the input signal comprises a signal from a tachometer expressed as pulses per second.
33—The visual local controller of claim 32 wherein one of the plurality of values of the digital adjustment profile comprises a pulses per second value substantially equal to the pulses per second value from the input signal.
34—The visual local controller of claim 28 wherein one of the plurality of values of the digital adjustment profile comprises a minimum value allowed for the output signal provided to the controlled heating, ventilating, air-conditioning, and refrigeration device.
35—The visual local controller of claim 28 wherein one of the plurality of values of the digital adjustment profile comprises a maximum value allowed for the output signal provided to the controlled heating, ventilating, air-conditioning, and refrigeration device.
36—The visual local controller of claim 35 wherein one of the plurality of values of the digital adjustment profile comprises a minimum value allowed for the output signal provided to the controlled heating, ventilating, air-conditioning, and refrigeration device.
37—The visual local controller of claim 28 wherein the display unit further displays a decimal point.
38—The visual local controller of claim 28 wherein the display unit further displays engineering units.
39—The visual local controller of claim 38 wherein the display unit further displays a decimal point.