Honeywell International Inc.

Jim I Bartels

Timothy J Nordberg

Nathan Longen

A controller that controls both safety and application functions of connected equipment is disclosed. The controller allows a user to freely program application specific functions while preventing the application functions from affecting the safety functions of the controller. This may give the user more flexibility and leeway when programming the application specific programming functions, without having to worry about affecting the safe operation of the connected equipment.

Programmable controller with both safety and application functions

A building appliance controller is disclosed that includes a safety feature. In one illustrative embodiment, the building appliance controller may include a controller and a safety element. In some cases, the controller may include a control panel configured to provide an interface, and one or more option cards configured to communicate with the control panel via the interface and to provide additional functionality to the appliance controller. The safety element may include a first relay or other switching element that is configured to selectively pass power to the building appliance. In some illustrative embodiments, when an unsafe operating condition is detected by the control panel and/or the one or more option cards, the control panel and/or the one or more option cards may open the first relay of the safety element to cut off power to the building appliance. In some cases, a safety key may be passed between the control panel and the one or more option cards to help verify the safe operation of the building appliance.

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Hudson, WI, United States of America

Jim I Bartels