Safety switched on machine power supply
AssigneeRockwell Automation Technologies, Inc.
InventorsWilliam H. Martin, Allison M. Keller
Life of this patent
Estimating the term…
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.
Claims20
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 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 for providing power to second industrial automation equipment;
- 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
- 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.
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, 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, power to second industrial automation equipment in the industrial automation environment, wherein the first 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.
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 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 for providing power to second industrial automation equipment;
- 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
- 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.
Dependencies are inferred from the claim text.