This article is about general and Fault Detection and Diagnostic for Sun Control System used in Integrated Automation System or Building Automation System.
Sun Control System Fault Detection and Diagnostic
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Blind/Shade Closure Failure
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Description:
- Generates a fault when the blinds and/or shades are open and the outside light level is above a threshold as measured by the sun sensor. This indicates that either the associated blind/shade motor or controller is not closing the blind/shades when the outside lighting level exceeds a set point. Fault dependencies and associated scenarios include the following;
- The fault rule will make sure the exterior lighting level, as measured by the associated sun sensor, is currently utilized and above the set point.
- The fault rule will make sure the interior lighting level, as measured by the associated daylight or multi sensor, is currently utilized and above the set point.
- Generates a fault when the blinds and/or shades are open and the outside light level is above a threshold as measured by the sun sensor. This indicates that either the associated blind/shade motor or controller is not closing the blind/shades when the outside lighting level exceeds a set point. Fault dependencies and associated scenarios include the following;
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Requirements:
- Blind Position Command or Shade Position Command: Blind/Shade position command is required, but status can be used as a primary reference.
- Exterior Lighting Level: Measured in either lumens of foot candles from the sun sensor.
- Interior Lighting Level: Measured in either lumens of foot candles from the ceiling mounted daylight or multi sensor.
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Blind/Shade Opening Failure
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Description:
- Generates a fault when the blinds and/or shades are closed and the outside light level is within a threshold as measured by the sun sensor. This indicates that either the associated blind/shade motor or controller is not opening the blind/shades when the outside lighting level is within the setpoint. Fault dependencies and associated scenarios include the following;
- The fault rule will make sure the exterior lighting level, as measured by the associated sun sensor, is currently utilized and within the setpoint.
- The fault rule will make sure the interior lighting level, as measured by the associated daylight or multi sensor, is currently utilized and within the set point.
- Generates a fault when the blinds and/or shades are closed and the outside light level is within a threshold as measured by the sun sensor. This indicates that either the associated blind/shade motor or controller is not opening the blind/shades when the outside lighting level is within the setpoint. Fault dependencies and associated scenarios include the following;
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Requirements:
- Blind Position Command or Shade Position Command: Blind/Shade position command is required, but status can be used as a primary reference.
- Exterior Lighting Level: Measured in either lumens of foot candles from the sun sensor.
- Interior Lighting Level: Measured in either lumens of foot candles from the ceiling mounted daylight or multi sensor.
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Sensor Failure
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Description:
- Finds periods over a duration when a sensor does not change by a threshold for a 24-hour period and equipment is running.
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Requirements:
- Sensor: Any numerical data point, including statuses and operating mode(s).
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