CN-115718440-B - System for providing power to a load, test circuit for testing voltage supply of a load, and tangible non-transitory computer readable medium

Abstract

The present invention relates to an input/output (IO) module power supply with on-line load testing capability. Embodiments of the present disclosure include an input/output (IO) power supply module coupled to a load. The IO power supply module may include test circuitry coupled to a voltage supply of the IO power supply module. The test circuitry may perform an on-line load current test to verify performance of the IO power supply module. To this end, the test circuitry may include a current measurement circuit coupled to the switch. The current measurement circuit may receive current via the switch when closed to determine whether the output current generated by the voltage supply is equal to the rated output current.

Inventors

• JOHN R. O'CONNELL
• Edward - C - Hope Seger

Assignees

• 罗克韦尔自动化技术公司

Dates

Publication Date

20260505

Application Date

20220728

Priority Date

20210824

Claims (20)

1. 1. A system for providing power to a load, comprising: a voltage supply configured to supply an output current to a load; test circuitry coupled to the voltage supply, wherein the test circuitry comprises: An additional voltage supply; A switch configured to close in response to a voltage signal from the additional voltage supply, and A current measurement circuit configured to be coupled to the switch, wherein the current measurement circuit is configured to receive the output current from the voltage supply when the switch is closed and the voltage supply operates as an auxiliary supply role for the load; A diode coupled to the load, wherein an anode of the diode is disposed toward the voltage supply, and A control system configured to: receiving an indication of a voltage across the current measurement circuit from a sensing circuit when the switch is closed; Determining an amount of current present in the output current based on resistance values associated with the current measurement circuit and the voltage, and An operation is performed based on the amount of current.
2. 2. The system of claim 1, wherein the control system is configured to: comparing the amount of current with a rated output current associated with the voltage supply, and The operation is performed based on the amount of current being within a threshold amount relative to the rated output current.
3. 3. The system of claim 1, comprising a current limiter and a diode, wherein, An input to the current limiter is coupled to the voltage supply; the output from the current limiter is coupled to the anode of the diode, and The load is coupled to the cathode of the diode.
4. 4. The system of claim 1, wherein the test circuitry comprises a timing circuit configured to limit an amount of time the voltage signal is applied to the switch.
5. 5. The system of claim 4, wherein the timing circuit comprises at least one capacitor and at least one resistor associated with a time constant period.
6. 6. The system of claim 1, comprising: a second voltage supply coupled to the load, and And second test circuitry, wherein the second test circuitry is configured to test a second output current from the second voltage supply at a different time than the test circuitry.
7. 7. The system of claim 6, wherein the control system is configured to: determining the second voltage supply to assist in supplying character operation, and Operating in the auxiliary supply role in response to the second voltage supply: Causing the second test circuitry to couple the second voltage supply to one or more second resistors via a second switch a plurality of times, and A determination is made as to whether a second amount of current present in the second output current is within a threshold amount of a rated output current associated with the second voltage supply.
8. 8. The system of claim 7, wherein the voltage supply is configured to output the output current to the load when the second test circuitry determines whether the second amount of current is within a threshold amount of the rated output current.
9. 9. The system of claim 1, wherein the current measurement circuit comprises one or more resistors.
10. 10. A test circuit for testing a voltage supply of a load, comprising: An additional voltage supply; a switch configured to close in response to receiving a voltage signal from the additional voltage supply; a timing circuit coupled to the additional voltage supply and to a ground terminal, wherein the timing circuit is configured to limit an amount of time that the voltage signal is provided to the switch; a current measurement circuit configured to be coupled to the switch, wherein the current measurement circuit is configured to receive an output current from the voltage supply during the amount of time when the switch is closed and the voltage supply operates as an auxiliary supply role for the load, and A diode coupled to the load, wherein an anode of the diode is disposed toward the voltage supply.
11. 11. The test circuit of claim 10, wherein the timing circuit includes at least one capacitor and at least one resistor associated with a time constant period configured to limit an amount of time the voltage signal is applied to the switch.
12. 12. The test circuit of claim 11, wherein the current measurement circuit comprises one or more resistors.
13. 13. The test circuit of claim 12, wherein the switch is configured to be coupled to a first resistor, and wherein the first resistor is configured to be coupled in series to a second resistor coupled to the ground terminal.
14. 14. The test circuit of claim 10, wherein the switch is configured to be coupled to an anode of a diode coupled to the additional voltage supply via a current limiter.
15. 15. A tangible, non-transitory computer-readable medium configured to store instructions executable by a processor of an electronic device, the instructions when executed by the processor cause the processor to: Receiving an indication of a request to verify an output current of a first input/output power supply module configured to be coupled to a load; closing a switch for a duration in response to an indication of the request; responsive to determining that the power supply module provides an auxiliary supply level to the load, detecting a voltage across one or more resistors coupled between the switch and a ground terminal; Determining an amount of current present in an output current delivered via the one or more resistors based on the resistance values of the one or more resistors and the voltage, and A notification is transmitted in response to a difference between the amount of current and a rated output current being greater than a threshold amount.
16. 16. The tangible, non-transitory computer-readable medium of claim 15, storing instructions that, when executed by the processor, cause the processor to compare the amount of current to a rated output current of a voltage supply of a first input/output power supply module.
17. 17. The tangible, non-transitory computer-readable medium of claim 15, storing instructions that, when executed by the processor, cause the processor to close an additional switch in response to another indication of a request to verify an additional output current of a second input/output power supply module.
18. 18. The tangible, non-transitory computer-readable medium of claim 17, wherein the voltage supply of the first input/output power supply module is configured to output the output current to the load when an additional switch of the second input/output power module is closed.
19. 19. The tangible, non-transitory computer-readable medium of claim 15, storing instructions that, when executed by the processor, cause the processor to, in response to receiving the indication of the request, cause a voltage pulse to be transmitted to the switch, wherein the voltage pulse is configured to close the switch for the duration.
20. 20. The tangible, non-transitory computer-readable medium of claim 15, wherein the first input/output power supply module is configured to attenuate a control signal for closing the switch after the duration.

Description

System for providing power to a load, test circuit for testing voltage supply of a load, and tangible non-transitory computer readable medium Technical Field The present disclosure relates generally to systems and methods for input/output (IO) module power supply within an industrial automation system. More particularly, embodiments of the present disclosure relate to providing power to a load from a concurrently operating IO module power supply of an industrial automation system. Background This section is intended to introduce the reader to various aspects of art that may be related to various aspects of the present technology, which are described and/or claimed below. This discussion is believed to be helpful in providing the reader with background information to facilitate a better understanding of the various aspects of the present disclosure. It should therefore be understood that these statements are to be read in this light, and not as admissions of prior art. An industrial automation system can include an automation control and monitoring system. The automated control and monitoring system may monitor conditions and/or receive sensed data from a number of various devices, such as valves, electric motors, various types of sensors, other suitable monitoring devices, and the like. Further, one or more components of an automation control and monitoring system, such as programming terminals, automation controllers, input/output (IO) modules, communication networks, human-machine interface (HMI) terminals, etc., may use the status and/or collected information to provide an alert to an operator to change or adjust operation of one or more components of an industrial automation system (e.g., such as adjusting operation of one or more actuators) to manage the industrial automation system, etc. The automated control and monitoring system may change how the load is operated based on the monitored conditions or sensed data. To this end, the automation control and monitoring system may change the control signal supplied to the networked devices, which may control whether the power supply provides power to a load downstream of the power supply. For example, a power-enabled IO module (e.g., an IO power processing module) may supply power to one or more loads coupled downstream. Over time, the physical materials forming the IO power module may degrade, components of the IO power module may operate erroneously, and so on. These types of problems that may be caused by the IO power module may attenuate or reduce the current output of the IO power module such that the current output no longer meets the desired current rating for the IO power module. To test for undesired current output, the load may be energized via the IO power module to verify that the current level output by the IO module meets the current rating of the load. With this in mind, it should be noted that in some cases it may not be desirable to energize a load to perform conventional testing of IO power modules in an industrial automation system in which devices are continuously operating to perform manufacturing and other automation tasks. Accordingly, improved systems and methods for load current testing of devices within an industrial automation system may be desired. Disclosure of Invention The following sets forth an overview of certain embodiments disclosed herein. It should be understood that these aspects are presented merely to provide the reader with a brief summary of these certain embodiments and that these aspects are not intended to limit the scope of this disclosure. Indeed, the present disclosure may encompass a variety of aspects that may not be set forth below. In one embodiment, a system may include a voltage supply that may supply an output current to a load, and test circuitry coupled to the voltage supply. The test circuitry may include an additional voltage supply, a switch, and a current measurement circuit, the switch being closed in response to a voltage signal from the additional voltage supply. The current measurement circuit may be coupled to the switch. The current measurement circuit may receive the output current from the voltage supply when the switch is closed. Further, the system may include a control system that receives an indication of the voltage across the current measurement circuit from the sensing circuit when the switch is closed, determines an amount of current present in the output current based on resistance values associated with the current measurement circuit and the voltage, and performs an operation based on the amount of current. In another embodiment, the test circuit may include a voltage supply and a switch. The switch may be closed in response to receiving a voltage signal from the voltage supply. The test circuit may also include a timing circuit coupled to the voltage supply and the ground terminal. The timing circuit may limit the amount of time that the voltage signal is provided to the swit