# US 12,761,624 B2 · Safety switched on machine power supply > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,761,624 B2 - Document ID: US12761624B2 - Status: Granted - Kind: B2 - Application number: 18/466,331 - Filed: 2023-09-13 - Published: 2025-03-13 - Granted: 2026-10-13 - Earliest claimed: 2023-09-13 - Assignees: Rockwell Automation Technologies, Inc. - Applicants: Rockwell Automation Technologies, Inc. - Inventors: William H. Martin; Allison M. Keller - Web page: https://patentgrep.com/patent/US12761624B2 ## CPC - G05B 19/058: {Safety, monitoring} - G05B 19/054: {Input/output} - G05B 2219/14117: Emergency shut down of control processor, power down - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) ## Abstract A power supply for use in an industrial automation environment includes a housing, a safety input interface, a switched-mode power supply, safe-off circuitry, a first power output channel, a first protection circuit, a second power output channel, a second protection circuit, and a processor. The processor is configured to receive a safety input signal instructing the power supply to shut off power that is provided to industrial automation equipment via the first power output channel and further to cause the safe-off circuitry to shut off the power that is provided to the industrial automation equipment via the first power output channel. ## Claims ### Claim 1 A power supply for use in an industrial automation environment, comprising: a housing; a safety input interface; a switched-mode power supply contained within the housing; safe-off circuitry contained within the housing and connected to the switched-mode power supply; a first power output channel that is connected to the switched-mode power supply and is for providing power to first industrial automation equipment; a first protection circuit that is connected to the first power output channel and configured to protect the first power output channel; a second power output channel that is connected to the switched-mode power supply and is for providing power to second industrial automation equipment, wherein the switched-mode power supply is configured to simultaneously supply regulated output power to the first power output channel and the second power output channel; a second protection circuit that is connected to the second power output channel and configured to protect the second power output channel; and a processor configured to: receive a safety input signal via the safety input interface, the safety input signal instructing the power supply to shut off the power that is provided to the first industrial automation equipment via the first power output channel; and responsive to receipt of the safety input signal, cause the safe-off circuitry to shut off the power that is provided to the first industrial automation equipment via the first power output channel without causing the safe-off circuitry to shut off the power that is provided to the second industrial automation equipment via the second power output channel. ### Claim 2 (depends on 1) The power supply of claim 1, wherein the processor is configured to receive the safety input signal from a safety controller in the industrial automation environment that is separate from the power supply. ### Claim 3 (depends on 1) The power supply of claim 1, wherein the processor is configured to receive the safety input signal from an emergency stop device in the industrial automation environment that is separate from the power supply. ### Claim 4 (depends on 3) The power supply of claim 3, wherein the emergency stop device is hard-wired to the power supply. ### Claim 5 (depends on 1) The power supply of claim 1, wherein: the first protection circuit is configured to prevent the power supply from delivering more than a first threshold amount of current via the first power output channel; and the second protection circuit is configured to prevent the power supply from delivering more than a second threshold amount of current via the second power output channel. ### Claim 6 (depends on 1) The power supply of claim 1, wherein the first power output channel provides the power to the first industrial automation equipment in the industrial automation environment in accordance with National Electric Code (NEC) Class 2 standards. ### Claim 7 (depends on 1) The power supply of claim 1, wherein: the first industrial automation equipment comprises a first industrial robot; and the second industrial automation equipment comprises a second industrial robot. ### Claim 8 (depends on 1) The power supply of claim 1, wherein the housing of the power supply is mounted outside of an electrical panel and on a barrier that at least partially surrounds at least one of the first industrial automation equipment or the second industrial automation equipment. ### Claim 9 (depends on 1) The power supply of claim 1, wherein the housing of the power supply is mounted inside of an electrical panel in the industrial automation environment. ### Claim 10 (depends on 1) The power supply of claim 1, wherein: the first power output channel is configured as a safety power channel that is subject to the safety input signal; and the second power output channel is configured as a standard power channel that is not subject to the safety input signal. ### Claim 11 (depends on 1) The power supply of claim 1, comprising: a third power output channel that is connected to the switched-mode power supply for providing power to third industrial automation equipment; and a third protection circuit that is connected to the third power output channel and configured to protect the third power output channel. ### Claim 12 (depends on 1) The power supply of claim 1, wherein at least one of the first protection circuit or the second protection circuit comprises a current sensor. ### Claim 13 A method for supplying power in an industrial automation environment, the method comprising: providing, via a first power output channel of a power supply device that receives regulated output power from a switched-mode power supply of the power supply device, power to first industrial automation equipment in the industrial automation environment, wherein the first power output channel is connected to a first protection circuit of the power supply device configured to prevent the power supply from delivering more than a first threshold amount of current to the first industrial automation equipment via the first power output channel; providing, via a second power output channel of the power supply device that receives regulated output power from the switched-mode power supply of the power supply device simultaneously with the first power output channel, power to second industrial automation equipment in the industrial automation environment, wherein the second power output channel is connected to a second protection circuit of the power supply device configured to prevent the power supply from delivering more than a second threshold amount of current to the second industrial automation equipment via the second power output channel; receiving, via a safety input interface of the power supply device, a safety input signal instructing the power supply device to shut off the power that is provided to the first industrial automation equipment; and causing the power supply device to shut off the power provided to the first industrial automation equipment via the first power output channel responsive to receiving the safety input signal via the safety input interface without causing the safe-off circuitry of the power supply device to shut off the power provided to the second industrial automation equipment via the second power output channel. ### Claim 14 (depends on 13) The method of claim 13, wherein receiving the safety input signal via the safety input interface of the power supply device comprises receiving the safety input signal from a safety controller in the industrial automation environment that is separate from the power supply device. ### Claim 15 (depends on 13) The method of claim 13, wherein receiving the safety input signal via the safety input interface of the power supply device comprises receiving the safety input signal from an emergency stop device in the industrial automation environment that is separate from the power supply device. ### Claim 16 A power supply for use in an industrial automation environment, comprising: a safety input interface; a switched-mode power supply; safe-off circuitry connected to the switched-mode power supply; a first power output channel that is connected to the switched-mode power supply and is for providing power to first industrial automation equipment; a first protection circuit that is connected to the first power output channel and configured to prevent the power supply from delivering more than a first threshold amount of current to the first industrial automation equipment via the first power output channel; a second power output channel that is connected to the switched-mode power supply and is for providing power to second industrial automation equipment, wherein the switched-mode power supply is configured to simultaneously supply regulated output power to the first power output channel and the second power output channel; a second protection circuit that is connected to the second power output channel and configured to prevent the power supply from delivering more than a second threshold amount of current to the second industrial automation equipment via the second power output channel; and a processor configured to: receive a safety input signal via the safety input interface, the safety input signal instructing the power supply to shut off the power that is provided to the first industrial automation equipment; and responsive to receipt of the safety input signal, cause the safe-off circuitry to shut off the power that is provided to the first industrial automation equipment via the first power output channel without causing the safe-off circuitry to shut off the power that is provided to the second industrial automation equipment via the second power output channel. ### Claim 17 (depends on 16) The power supply of claim 16, wherein the processor is configured to receive the safety input signal from a safety controller in the industrial automation environment that is separate from the power supply. ### Claim 18 (depends on 16) The power supply of claim 16, wherein the processor is configured to receive the safety input signal from an emergency stop device in the industrial automation environment that is separate from the power supply and hard-wired to the power supply. ### Claim 19 (depends on 16) The power supply of claim 16, wherein a housing of the power supply is mounted outside of an electrical panel and on a barrier that at least partially surrounds at least one of the first industrial automation equipment or the second industrial automation equipment. ### Claim 20 (depends on 1) The power supply of claim 1, wherein the switched-mode power supply comprises a switching regulator configured to convert alternating current (AC) power to direct current (DC) power.