Controller for use in an environment control network capable of

Details Controller for use in an environment control network capable of Controller for use in an environment control network capable of

1994-07-22

1996-09-10

Voeltz, Emanuel T.

Boots, shoes, and leggings

364510, 62 93, 62126, 236 493, 165100, 165217, G01F 106

Patent

active

055551955

ABSTRACT:
The present invention relates to a diagnostic system for use in a network control system. The diagnostic system is preferably utilized to analyze VAV box performance in an environmental control system such as a network facilities management system. The diagnostic system advantageously records temperature, airflow, and actuator position data in the controller associated with the VAV box. Such a system allows person to analyze VAV boxes and controller performance over a particular timely period and the lifetime of the system. Box and damper warnings may be provided by the diagnostic system when the box or damper is operating below particular performance levels. Preferably, the diagnostic system formats the air flow actuator positions and temperature data so that it can be displayed for graphing. The diagnostic data is advantageously stored in the individual controllers.

REFERENCES:
patent: 4630670 (1986-12-01), Wellman et al.
patent: 5058388 (1991-10-01), Shaw et al.
patent: 5071065 (1991-12-01), Aalto et al.
patent: 5311451 (1994-05-01), Barrett
patent: 5446677 (1995-08-01), Jensen et al.

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