System and method for replacing 16-pin ECM motor with non-16-pin field adjustable ECM motor

Patent metadata

Field	Value
Publication number	US-10831165-B2
Application number	US-201916375482-A
Country	US
Kind code	B2
Filing date	Apr 4, 2019
Priority date	Apr 4, 2019
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A system and method for replacing a sixteen-pin ECM with a non-sixteen-pin, field adjustable ECM in an HVAC or other system, and adjusting the performance of the replacement motor at the point of installation. A converter module receives programming information from an existing control board via an existing sixteen-pin harness, and converts the information to six signals. The module includes potentiometers for tuning speed/torque for first and second settings, adjusting a horsepower output of the replacement ECM, and adjusting a ramp time to increase or decrease a rate at which the speed/torque changes. The module includes switches for selecting between clockwise and counterclockwise directions for the replacement ECM, selecting between PWM and non-PWM control, and selecting between torque and speed modes. A non-sixteen-pin motor controller receives the information from the converter module via a four-wire harness, translates the information, and outputs a control signal to the replacement ECM.

First claim

Having thus described one or more embodiments of the invention, what is claimed as new and desired to be protected by Letters Patent includes the following:

1. A system for replacing a sixteen-pin electronically commutated motor with a non-sixteen-pin electronically commutated motor in a particular application, the particular application including an existing control board configured to allow for setting a desired operating condition and to output corresponding programming information via an existing sixteen-pin harness, the system comprising:
a converter module configured to receive the programming information from the existing control board via the existing sixteen-pin harness, convert the programming information to between five and seven signals, wherein the converter module includes—
a first potentiometer configured to allow for tuning a speed for a first setting between no more than plus and minus twenty percent of a default first setting value, and
a second potentiometer configured to allow for tuning a speed for a second setting between no more than plus and minus twenty percent of a default second setting value; and

the converter module further configured to send the five to seven signals via a reduced-wire harness to a non-sixteen-pin motor controller configured to translate the programming information based on a known relationship between speed, torque, and the operating condition, and based thereon, output a control signal to the non-sixteen-pin electronically commutated motor.

2. The system of claim 1 , wherein the particular application is a heating, ventilation, and cooling application, the operating condition is an air flow, the first setting is a heat setting, and the second setting is a cool setting.

3. The system of claim 1 , wherein the converter module converts the programming information to six signals, and the reduced-wire harness communicates the six signals over four wires.

4. The system of claim 1 , wherein the converter module further includes a third potentiometer configured to allow for adjusting a horsepower output of the non-sixteen-pin electronically commutated motor.

5. The system of claim 1 , wherein the converter module further includes a fourth potentiometer configured to allow for adjusting a ramp time to increase or decrease a rate at which the speed changes.

6. The system of claim 1 , wherein the converter module further includes a first switch configured to allow for selecting a between a clockwise direction and a counterclockwise direction for the non-sixteen-pin electronically commutated motor.

7. The system of claim 1 , wherein the converter module further includes a second switch configured to allow for selecting between a pulse-width-modulation control and non-pulse-width-modulation control for the non-sixteen-pin electronically commutated motor.

8. The system of claim 1 , wherein the converter module further includes a third switch configured to allow for selecting between a torque mode and a speed mode for the non-sixteen-pin electronically commutated motor.

9. A system for replacing a sixteen-pin electronically commutated motor with a non-sixteen-pin electronically commutated motor in a particular application, the particular application including an existing control board configured to allow for setting a desired air flow and to output corresponding programming information via an existing sixteen-pin harness, the system comprising:
a converter module configured to receive the programming information from the existing control board via the existing sixteen-pin harness, convert the programming information to between five and seven signals, wherein the converter module includes—
a first potentiometer configured to allow for tuning a speed for a heat setting between no more than plus and minus twenty percent of a default heat setting value, and
a second potentiometer configured to allow for tuning a speed for a cool setting between no more than plus and minus twenty percent of a default cool setting value;

a non-sixteen-pin motor controller configured to receive the programming information from the converter module via a reduced-wire harness, translate the programming information based on a known relationship between speed, torque, and air flow, and based thereon, output a control signal to create the desired air flow; and
the non-sixteen-pin electronically commutated motor configured to receive and operate in accordance with the control signal to create the desired air flow.

10. The system of claim 9 , wherein the converter module further includes a third potentiometer configured to allow for adjusting a horsepower output of the non-sixteen-pin electronically commutated motor.

11. The system of claim 9 , wherein the converter module further includes a fourth potentiometer configured to allow for adjusting a ramp time to increase or decrease a rate at which the speed changes.

12. The system of claim 9 , wherein the converter module further includes a first switch configured to allow for selecting a between a clockwise direction and a counterclockwise direction for the non-sixteen-pin electronically commutated motor.

13. The system of claim 9 , wherein the converter module further includes a second switch configured to allow for selecting between a pulse-width-modulation control and non-pulse-width-modulation control for the non-sixteen-pin electronically commutated motor.

14. The system of claim 9 , wherein the converter module further includes a third switch configured to allow for selecting between a torque mode and a speed mode for the non-sixteen-pin electronically commutated motor.

15. A method for replacing a sixteen-pin electronically commutated motor with a non-sixteen-pin electronically commutated motor in a particular application, the particular application including an existing control board configured to allow for setting a desired air flow and to output corresponding programming information via an existing sixteen-pin harness, the method comprising:
disconnecting the existing sixteen-pin harness from an existing sixteen-pin motor controller, and removing the existing sixteen-pin motor controller and an existing sixteen-pin electronically commutated motor;
installing a replacement non-sixteen-pin motor controller and a replacement non-sixteen-pin electronically commutated motor in place of the existing sixteen-pin motor controller and the existing sixteen-pin electronically commutated motor which were removed;
connecting the existing sixteen-pin harness from the existing control board to a sixteen-pin connector of a converter module, and connecting a reduced-wire harness from the converter module to the replacement non-sixteen-pin motor controller; and
adjusting a potentiometer associated with the converter module, including—
adjusting a first potentiometer to tune a speed for a heat setting between no more than plus and minus twenty percent of a default heat setting value, and
adjusting a second potentiometer to tune a speed for a cool setting between no more than plus and minus twenty percent of a default cool setting value.

16. The method of claim 15 , further including adjusting a third potentiometer to adjust a horsepower output of the non-sixteen-pin electronically commutated motor.

17. The method of claim 15 , further including adjusting a fourth potentiometer to adjust a ramp time to increase or decrease a rate at which the speed changes.

18. The method of claim 15 , further including adjusting a first switch associated with the converter module to select between a clockwise direction and

Assignees

• Nidec Motor Corp

Inventors

• Reed Tarris A
• Schock Christopher D
• Wade Ryan Timothy
• Silvey Morgan Jeremy
• Shahi Prakash B
• Ploof Jr Robert J

Classifications

• H02P23/0027 Primary

  using different modes of control depending on a parameter, e.g. the speed · CPC title

• H02P23/00

  Arrangements or methods for the control of AC motors characterised by a control method other than vector control · CPC title

• G05B19/042 Primary

  using digital processors (G05B19/05 takes precedence) · CPC title

• G05B2219/2614

  HVAC, heating, ventillation, climate control · CPC title

• Y02B30/70

  Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating · CPC title