Two-wire field-mounted process device
First Claim
1. A two-wire field-mountable process device comprising:
- a power module couplable to a two-wire process control loop and adapted to wholly power the process device with power received from the two-wire process control loop;
a loop communicator coupled to the power module, and being couplable to the two-wire loop to communicate on the two-wire loop in accordance with the Fieldbus or Profibus protocol, wherein the communicator is configured to provide an output on the loop;
a controller coupled to the loop communicator and power module;
a first input connection operably coupled to the controller, the first input connection configured to couple to at least a first sensor and configured to receive a sensor input; and
a second input connection operably coupled to the controller, the second input connection configured to couple to a second sensor and receive a sensor input; and
wherein the first and second input connections are substantially electrically isolated from each other and from the two-wire loop.
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Accused Products
Abstract
A two-wire field-mounted process device with multiple isolated channels includes a channel that can be an input channel or an output channel. The given input or output channel can couple to multiple sensors or actuators, respectively. The process device is wholly powered by the two-wire process control loop. The process device includes a controller adapted to measure one or more characteristics of sensors coupled to an input channel and to control actuators coupled to an output channel. The controller can be further adapted to execute a user generated control algorithm relating process input information with process output commands. The process device also includes a loop communicator that is adapted to communicate over the two-wire loop.
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Citations
57 Claims
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1. A two-wire field-mountable process device comprising:
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a power module couplable to a two-wire process control loop and adapted to wholly power the process device with power received from the two-wire process control loop;
a loop communicator coupled to the power module, and being couplable to the two-wire loop to communicate on the two-wire loop in accordance with the Fieldbus or Profibus protocol, wherein the communicator is configured to provide an output on the loop;
a controller coupled to the loop communicator and power module;
a first input connection operably coupled to the controller, the first input connection configured to couple to at least a first sensor and configured to receive a sensor input; and
a second input connection operably coupled to the controller, the second input connection configured to couple to a second sensor and receive a sensor input; and
wherein the first and second input connections are substantially electrically isolated from each other and from the two-wire loop. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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2-28. -28. (canceled)
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49. A two-wire field-mountable process device comprising:
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a power module couplable to a two-wire loop and adapted to wholly power the process device with power received from the two-wire loop;
a loop communicator coupled to the power module, and being couplable to the two-wire loop to communicate on the two-wire loop in accordance with a digital protocol, wherein the communicator is configured to provide an output of the loop;
a controller coupled to the loop communicator and power module;
a first input connection operably coupled to the controller, the first input connection configured to couple to at least a first sensor and configured to receive a sensor input;
a second input connection operably coupled to the controller, the second input connection configured to couple to a second sensor and receive a sensor input; and
wherein the first and second input connections are substantially electrically isolated from each other and from the two-wire loop. - View Dependent Claims (50, 51, 52)
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53. A two-wire field-mountable process device comprising:
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a power module couplable to a two-wire loop and adapted to wholly power the process device with power received from the two-wire loop;
a loop communicator coupled to the power module, and being couplable to the two-wire loop to communicate on the two-wire loop;
a controller coupled to the loop communicator and power module;
a first input connection operably coupled to the controller, the first input connection configured to couple to at least a first sensor and configured to receive a sensor input;
a second input connection operably coupled to the controller, the second input connection configured to couple to a second sensor and receive a sensor input;
wherein the first and second input connections are substantially electrically isolated from each other; and
wherein circuitry of the first input connection and circuitry of the second input connection are powered by the power module. - View Dependent Claims (54, 55, 56, 57)
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Specification