Compressor sensor module

1. A system for a compressor having an electric motor connected to a power supply, the system comprising:

a sensor module comprising:

an input that receives current measurements generated by a current sensor based on a current of the power supply; and

a processor that is connected to the input, that determines a maximum continuous current for the electric motor set based on a type of refrigerant used by the compressor, that selectively compares the current measurements with a value equal to the maximum continuous current multiplied by a predetermined value, and that sets a flag when the current measurements are greater than the value for a predetermined period; and

at least one of a control module and a system controller that selectively adjusts at least one of compressor and refrigeration system operation based on the setting of the flag.

2. The system of claim 1 further comprising:

an electrical enclosure that is configured to house electrical terminals for connecting the power supply with the electrical motor,

wherein the sensor module is disposed within the electrical enclosure.

3. The system of claim 1 wherein the processor determines whether to compare the current measurements with the value based on a period that the compressor has been in a run state.

4. The system of claim 3 wherein the processor compares the current measurements with the value in response to a determination that the period is greater than a predetermined period.

5. The system of claim 4 wherein the processor disables the comparison in response to a determination that the period is less than the predetermined period.

6. The system of claim 1 wherein the processor determines whether to compare the current measurements with the value based on whether the compressor is in a run state.

7. The system of claim 6 wherein the processor:

disables the comparison of the current measurements with the value when the compressor is not in the run state;

disables the comparison of the current measurements with the value when a period of operation of the compressor in the run state is less than a predetermined period; and

compares the current measurements with the value when the period of operation of the compressor in the run state is greater than the predetermined period.

8. The system of claim 1 wherein the maximum continuous current for the electric motor is set during manufacture of the compressor.

9. The system of claim 8 wherein the maximum continuous current for the electric motor is user configurable.

10. The system of claim 1 further comprising memory that stores the maximum continuous current.

11. The system of claim 1 wherein the predetermined value is equal to 1.1.

12. A method performed by a system comprising a sensor module for a compressor having an electric motor connected to a power supply, the method comprising:

receiving, by the sensor module, current measurements generated by a current sensor based on a current of the power supply;

determining, by the sensor module, a maximum continuous current for the electric motor set based on a type of refrigerant used by the compressor;

selectively comparing, by the sensor module, the current measurements with a value equal to the maximum continuous current multiplied by a predetermined value;

setting a flag when the current measurements are greater than the value for a predetermined period; and,

using at least one of a control module and a system controller, selectively adjusting at least one of compressor and refrigeration system operation based on the setting of the flag.

13. The method of claim 12 further comprising determining whether to compare the current measurements with the value based on a period that the compressor has been in a run state.

14. The method of claim 13 further comprising comparing the current measurements with the value in response to a determination that the period is greater than a predetermined period.

15. The method of claim 14 further comprising disabling the comparison in response to a determination that the period is less than the predetermined period.

16. The method of claim 12 further comprising determining whether to compare the current measurements with the value based on whether the compressor is in a run state.

17. The method of claim 16 further comprising:

disabling the comparison of the current measurements with the value when the compressor is not in the run state;

disabling the comparison of the current measurements with the value when a period of operation of the compressor in the run state is less than a predetermined period; and

comparing the current measurements with the value when the period of operation of the compressor in the run state is greater than the predetermined period.

18. The method of claim 12 further comprising setting the maximum continuous current for the electric motor during manufacture of the compressor.

19. The method of claim 18 further comprising setting the maximum continuous current for the electric motor based on user input.

20. The method of claim 12 further comprising storing the maximum continuous current in memory of the sensor module.

21. The method of claim 12 wherein the predetermined value is equal to 1.1.