Objective/ Method/Outcome
Objective: Determines if the pump status and speed signals are matching.
Method: Compares the pump status and speed signals to check if their activity matches and generates an insight when a mismatch occurs for greater than the defined daily threshold. Avoidable Cost and Potential savings are determined based on an hourly cost of faulty operation.
Outcome: This rule generates an insight.
Description
This rule compares the status and speed signals to determine if there is a mismatch. This rule is part of the CopperTree Standard rule-set.
Default Priority
Medium
Diagnosis
1. Check if the equipment is manually overridden.
2. Check VFD speed readings.
3. Check status sensors.
Message
Pump status-speed signals do not match. Please investigate unit control.
Rule Template
Insight Type: Fault Detection
Trigger Type: Active High
Inputs
| Input | Unit | Tags | Description |
|---|---|---|---|
| Pump Status | Chilled Water Pump Status, Hot Water Pump Status, Chiller Condenser Water Pump Status | ||
| Pump VFD Speed | Hot Water Pump VFD Speed, Chilled Water Pump VFD Speed, Chiller Condenser Water Pump VFD Speed | ||
| Acceptable Hours of Fault per Day | Hours | The minimum hours of fault that can trigger an insight | |
| Weeks of Operation | The annual weeks of operation | ||
| Cost per Hour | $ | The defined hourly cost of faulty operation |
Notes
1. Expected values for “Pump Status” inputs are “0” or “1”.
Default Values:
Const. – Acceptable Hours of Fault per Day: 2
Const. – Cost per Hour [$]: 0 Const. – Weeks of Operation: 26
