Applicable Systems
- Primary: AHU, RTU, MUA, ERV
Objective/Method/Outcome
- Objective: Determine if mode has not changed at least once during the course of a week
- Method: Monitors the mode TL, and generates an insight if the mode has not changed at least once during the course of a week.
- Outcome: An insight is generated if the equipment mode hasn’t changed over the week.
Logic
The logic flow starts by taking the Mode data and using the Delta block to check out the possible changes in the input value. If the number of changes is lower than one time per week, an insight will be triggered
{
if ((Agg(Mode(sample n+1)-Mode(sample n)) < 1 time/week), Insight_Flag, No_Insight)
}
Description / Method
Monitors the mode TL, and generates an insight if the mode has not changed at least once during the course of a week (user adjustable).
Diagnosis / Recommended Action
- Review mode change sequence.
Message
Mode of operation has not changed at least once for this week. Please review mode sequence.
Notes
All thresholds are adjustable. Please note that the aggregation interval can be changed from weekly aggregation, as required (example: daily aggregation) by editing the Aggregate Block [24]. The rule has been designed to determine if the faulty condition is true when the first set of samples for the seventh day arrive in Kaizen. The rule also generates a CTL to store the count of mode changes every day.
Default Values for Constants
- Weekly_Threshold: 1
Rule Template Type
- Insight Type: Fault Detection
- Trigger Type: Active High
Default Priority
Medium
Inputs
| Inputs | Units | Default Value | Tags | Description |
|---|---|---|---|---|
| Mode | mode | Occupancy Indicator | ||
| Weekly_Threshold | 1 | Minimum number of times mode change should occur without triggering an insight |
