US 12,305,876 B2
Systems and methods for communication with motors in climate control systems
John F. Broker, Warrenton, MO (US); and Richard N Brower, St. Louis, MO (US)
Assigned to Copeland Comfort Control LP, St. Louis, MO (US)
Filed by Copeland Comfort Control LP, St. Louis, MO (US)
Filed on Oct. 24, 2022, as Appl. No. 18/049,043.
Application 18/049,043 is a continuation in part of application No. 16/948,112, filed on Sep. 3, 2020, granted, now 11,480,361.
Prior Publication US 2023/0065986 A1, Mar. 2, 2023
Int. Cl. F24F 11/88 (2018.01); F24F 11/56 (2018.01); F24F 11/77 (2018.01)
CPC F24F 11/88 (2018.01) [F24F 11/56 (2018.01); F24F 11/77 (2018.01)] 19 Claims
OG exemplary drawing
 
1. An HVAC system comprising:
a motor having five taps and a motor controller including a motor memory and a motor processor, the motor memory storing a first set of control data and instructions that cause the motor processor to drive the motor according to the first set of control data in response to energization of one or more of the five taps, wherein the five taps includes at least one bidirectional tap;
an HVAC controller, the HVAC controller connected to the five taps and configured to control the motor based on a plurality of operating conditions, the HVAC controller including an HVAC controller processor and an HVAC controller memory; and
interface circuitry connected between the bidirectional tap and an output of the HVAC controller to facilitate bidirectional communication between the motor and the HVAC controller,
wherein the HVAC controller memory stores instruction that program the HVAC controller processor to:
control the motor to desired operating points by outputting direct current (DC) pulse width modulated (PWM) signals to one or more taps of the five taps of the motor;
output instructions to the motor by outputting data from the output of the HVAC controller to the bidirectional tap of the motor, the instructions instructing the motor controller to change at least one element of the first set of control data to create a second set of control data different than the first set of control data; and
selectively place the output of the HVAC controller in a serial input mode to receive serial communication output by the motor controller on the bidirectional tap.