| Property | Type | Description |
|
Active Setpoint |
Numeric |
This is the current value of the temperature setpoint used to control the leaving chilled water temperature or the leaving hot water temperature. Based on the operating mode of the chiller, this setpoint will be the value of either the "Chilled Water Setpoint: Tracer" property or the "Hot Water Setpoint: Tracer" property.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Alarm Event Class [1-3] |
Numeric |
This is a three element array containing entries for alarm classes: Informational Diagnostics, Auto Reset Diagnostics, and Manual Reset Diagnostics. Each entry contains an index into the event action table. The event action table contains both a set of instructions for alarm routing, and a stretchy list of referencer objects (the potential receivers). |
|
Capacity Control: Active |
Binary |
This is the capacity control status. Capacity control will be reduced only when "Capacity Control: Tracer" is "Reduced" and "Unit Control Source" is "Tracer".0 = Normal, 1 = Reduced |
|
Capacity Control: Ref |
Referencer |
This is the value used by the BCU to determine which value to communicate to the chiller UCM as the normal or reduced capacity request. (This property feeds the "Capacity Control: Tracer" property.)0 = Normal, 1 = Reduced |
|
Capacity Control: Tracer |
Binary |
This is the value communicated by the system to the chiller UCM and used to request normal or reduced capacity operation. Reduced capacity is implemented by disabling circuit 2.0 = Normal, 1 = ReducedDefault: Normal |
|
Chilled Water Flow Status |
Binary |
This is the status of chilled water flow.0 = No Flow, 1 = Flow |
|
Chilled Water Pump Output |
Binary |
This is the current state of the evaporator pump output.0 = Off, 1 = On |
|
Chilled Water Setpoint: Source |
Binary |
This is the source of the chiller setpoints.0 = Local, 1 = Tracer |
|
Chilled Water Setpoint: Ref |
Referencer |
This is the value used by the BCU to determine which value to communicate to the chiller UCM as the chilled water setpoint. (This property feeds the "Chilled Water Setpoint: Tracer" property.)Range: -14.8 to 86.0 °F (-26.0 to 30.0 °C) |
|
Chilled Water Setpoint: Tracer |
Numeric |
This is the value communicated by the system to the chiller UCM and used as the leaving chilled water temperature setpoint. (This setpoint is the primary control value for the chiller in the cool mode.)Range: -14.8 to 86.0 °F (-26.0 to 30.0 °C)Default: 42.8 °F (6.0 °C) |
|
Chilled Water Temp: Entering |
Numeric |
This is the temperature of the water entering the chiller.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Chilled Water Temp: Leaving |
Numeric |
This is the temperature of the water leaving the evaporator. Maintaining this temperature is the primary control objective of the chiller. For single circuit chillers, this property will represent the actual temperature of the water leaving the evaporator. For dual circuit chillers, this property will represent the average temperature of the water leaving both evaporators.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Chilled Wtr Pump Request: Ref |
Referencer |
This is the value used by the BCU to determine which value to communicate to the chiller UCM as the chilled water pump request. (This property feeds the "Chilled Wtr Pump Request: Tracer" property.)0 = Auto, 1 = On |
|
Chilled Wtr Pump Request: Tracer |
Binary |
This is the value communicated by the system to the chiller UCM and used to request chilled water pump control.0 = Auto, 1 = OnDefault: Auto |
|
Chiller Enable/Disable: Tracer |
Binary |
This is the value communicated by the system to the chiller UCM and used to disable the chiller or put it into an auto mode.0 = Disable, 1 = AutoDefault: (priority arbitrated by "Present Value") |
|
Ckt Limited / Not Ready: CKT1 |
Binary |
This is whether circuit 1 is either limited or not ready.0 = No, 1 = Yes |
|
Ckt Limited / Not Ready: CKT2 |
Binary |
This is whether circuit 2 is either limited or not ready.0 = No, 1 = Yes |
|
Communication Address |
Numeric |
This is the assigned communication address of the UCM. |
|
Communication Bad Message Count |
Numeric |
This is the number of message errors that occur when attempting to communicate with the UCM. |
|
Communication Channel |
Numeric |
This is the assigned communication channel of the UCM. |
|
Communication Error Count |
Numeric |
This is the number of communications errors that occur when attempting to communicate with the UCM. |
|
Communication No Answer Count |
Numeric |
This is the number of unanswered communications with the UCM. |
|
Communication State |
Binary |
This is the chiller’s communication state.0 = Down, 1 = Up |
|
Compressor A Output |
Binary |
This is the current state of the compressor A1 output.0 = Off, 1 = On |
|
Compressor A Run Time |
Numeric |
This is the number of hours compressor A1 has run. Once it has reached its maximum value, this hours counter will automatically be reset back to 0.Range: 0 to 1,048,576 hours |
|
Compressor A Starts |
Numeric |
This is the number of starts compressor A1 has had. Once it has reached its maximum value, this starts counter will automatically be reset back to 0.Range: 0 to 1,048,575 starts |
|
Compressor B Output |
Binary |
This is the current state of the compressor B1 output.0 = Off, 1 = On |
|
Compressor B Run Time |
Numeric |
This is the number of hours compressor B1 has run. Once it has reached its maximum value, this hours counter will automatically be reset back to 0.Range: 0 to 1,048,576 hours |
|
Compressor B Starts |
Numeric |
This is the number of starts compressor B1 has had. Once it has reached its maximum value, this starts counter will automatically be reset back to 0.Range: 0 to 1,048,575 starts |
|
Compressor C Output |
Binary |
This is the current state of the compressor A2 output.0 = Off, 1 = On |
|
Compressor C Run Time |
Numeric |
This is the number of hours compressor A2 has run. Once it has reached its maximum value, this hours counter will automatically be reset back to 0.Range: 0 to 1,048,576 hours |
|
Compressor C Starts |
Numeric |
This is the number of starts compressor A2 has had. Once it has reached its maximum value, this starts counter will automatically be reset back to 0.Range: 0 to 1,048,575 starts |
|
Compressor D Output |
Binary |
This is the current state of the compressor B2 output.0 = Off, 1 = On |
|
Compressor D Run Time |
Numeric |
This is the number of hours compressor B2 has run. Once it has reached its maximum value, this hours counter will automatically be reset back to 0.Range: 0 to 1,048,576 hours |
|
Compressor D Starts |
Numeric |
This is the number of starts compressor B2 has had. Once it has reached its maximum value, this starts counter will automatically be reset back to 0.Range: 0 to 1,048,575 starts |
|
Compressor In Anti-Recycle |
Binary |
This is whether one or more of the compressors is in an anti-recycle state.0 = No, 1 = Yes |
|
Compressor Running |
Binary |
This is the current status of the chiller, and indicates when one or more compressors is running.0 = No, 1 = Yes |
|
Cond Saturated Refrig Press CKT1 |
Numeric |
This is the value of the condenser saturated refrigerant pressure input from circuit 1 on the chiller.Range: -14 to 507 PSI (-96.5 to 3495.6 kPa) |
|
Cond Saturated Refrig Press CKT2 |
Numeric |
This is the value of the condenser saturated refrigerant pressure input from circuit 2 on the chiller.Range: -14 to 507 PSI (-96.5 to 3495.6 kPa) |
|
Cond Saturated Refrig Temp: CKT1 |
Numeric |
This is the value of the condenser saturated refrigerant temperature from circuit 1, and is used to monitor the condition of the condenser on circuit 1.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Cond Saturated Refrig Temp: CKT2 |
Numeric |
This is the value of the condenser saturated refrigerant temperature from circuit 2, and is used to monitor the condition of the condenser on circuit 2.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Condenser Fan Status |
Binary |
This is the status of line fan 1.0 = Off, 1 = On |
|
Condenser Water Temp: Entering |
Numeric |
This is the temperature of the water entering the condenser, and is used for monitoring the condition of the condenser.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Condenser Water Temp: Leaving |
Numeric |
This is the temperature of the water leaving the condenser, and is used for monitoring the condition of the condenser.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Config: Unit Type |
Multi-State |
This is the unit configuration, and is edited by the operator. 0 = CGAH/RAUH 1 = CGWH/CCUH 2 = CGCH/RACH 3 = CXAH 4 = Other Trane Europe ChillerDefault: CGAH / RAUH |
|
Control Event Class |
Numeric |
This determines where control messages are routed when the object’s present value is controlled. |
|
Diag: Automatic Reset |
Binary |
This indicates that an automatic reset diagnostic exists.0 = No, 1 = Yes |
|
Diag: Automatic Reset CKT1 |
Binary |
This indicates that an automatic reset diagnostic exists on circuit 1.0 = No, 1 = Yes |
|
Diag: Automatic Reset CKT2 |
Binary |
This property indicates an automatic reset diagnostic exists on circuit 2.0 = No, 1 = Yes |
|
Diag: Information Warning |
Binary |
This indicates an informational warning diagnostic exists. It is calculated based on the last diagnostic enumeration. Since the last diagnostic is prioritized such that the informational warning diagnostics are of the lowest priority, this property will not indicate any potential informational warning diagnostic exists when nearly any of the automatic reset diagnostics exist or any of the manual reset required diagnostics exist.0 = No, 1 = Yes |
|
Diag: Last |
Multi-State |
This is the last diagnostic to occur on the chiller. The diagnostics are ordered here from lowest priority (first) to highest priority (last). When a diagnostic occurs, the UCM will place it in the last diagnostic only if it is of higher priority than any existing last diagnostic. |
|
Diag: Last (continued) |
Multi-State |
37 = Communication I/O 4 |
|
Diag: Man Reset Reqd: CKT1 |
Binary |
This indicates a manual reset required diagnostic exists on circuit 1.0 = No, 1 = Yes |
|
Diag: Man Reset Reqd: CKT2 |
Binary |
This indicates a manual reset required diagnostic exists on circuit 2.0 = No, 1 = Yes |
|
Diag: Manual ResetRequired |
Binary |
This indicates a manual reset required diagnostic exists.0 = No, 1 = Yes |
|
Evap Leaving Water Temp: CKT1 |
Numeric |
This is the temperature of the water leaving the evaporator on circuit 1.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Evap Leaving Water Temp: CKT2 |
Numeric |
This is the temperature of the water leaving the evaporator on circuit 2.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Evap Saturated Refrig Press CKT1 |
Numeric |
This is the value of the evaporator saturated refrigerant pressure input from circuit 1 on the chiller.Range: -14 to 507 PSI (-96.5 to 3495.6 kPa) |
|
Evap Saturated Refrig Press CKT2 |
Numeric |
This is the value of the evaporator saturated refrigerant pressure input from circuit 2 on the chiller.Range: -14 to 507 PSI (-96.5 to 3495.6 kPa) |
|
Evap Saturated Refrig Temp: CKT1 |
Numeric |
This is used to monitor the condition of the evaporator on circuit 1.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Evap Saturated Refrig Temp: CKT2 |
Numeric |
This is used to monitor the condition of the evaporator on circuit 2.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Evaporator Heater Output |
Binary |
This is the status of the evaporator heater output .0 = Off, 1 = On |
|
Heat/Cool Mode: Ref |
Referencer |
This is the value used by the BCU to determine which value to communicate to the chiller UCM to request heating or cooling. (This property feeds the "Heat/Cool Mode: Tracer" property.)0 = Cooling, 1 = Heating |
|
Heat/Cool Mode: Tracer |
Binary |
This is the value communicated by the system to the chiller UCM and used to request the heat or cool mode.0 = Cooling, 1 = HeatingDefault: Cooling |
|
Hot Water Setpoint: Ref |
Referencer |
This is the value used by the BCU to determine which value to communicate to the chiller UCM as the hot water setpoint. (This property feeds the "Hot Water Setpoint: Tracer" property.)Range: 68.0 to 140.0 °F (20.0 to 60.0 °C) |
|
Hot Water Setpoint: Tracer |
Numeric |
This is the value communicated by the system to the chiller UCM and used as the leaving hot water temperature setpoint. (This setpoint is the primary control value for the chiller in the heat mode.)Range: 68.0 to 140.0 °F (20.0 to 60.0 °C)Default: 113.0 °F (45.0 °C) |
|
Last Control Date Time |
Date/Time Numeric |
This is the date and time recorded at the last control of the present value. Its value is updated when an attempt to control occurs and 1] a priority change occurs (up or down), OR 2] a change in the commandable property value occurs (e.g., OCCUPIED to UNOCCUPIED), OR, 3] a change in the priority owner occurs and the priority level stays the same. |
|
Low Noise Control: Ref |
Referencer |
This is the value used by the BCU to determine which value to communicate to the chiller UCM to request normal or low noise control. (This property feeds the "Low Noise Control: Tracer" property.)0 = Normal, 1 = Low |
|
Low Noise Control: Tracer |
Binary |
This is the value communicated by the system to the chiller UCM and used to select normal or low noise control.0 = Normal, 1 = LowDefault: Normal |
|
Minimum Off Time |
Numeric |
This is the minimum off time assigned to the UCM. This value serves to protect the hardware from cycle times that might harm it. Range: 0 to 120 minutes |
|
Minimum On Time |
Numeric |
This is the minimum on time assigned to the UCM. This value serves to protect the hardware from cycle times that might harm it. |
|
Range: 0 to 120 minutes |
|
|
|
Minimum Time Remaining |
Numeric |
This is the minimum time remaining (if any) of a minimum On/Off time control action for the UCM. Range: 0 to 120 minutes |
|
Mode: Heat/Cool |
Binary |
This is the heat / cool mode of the chiller. 0 = Cooling, 1 = Heating |
|
Object Identifier |
Object ID |
This property uniquely identifies a particular object. |
|
Object Name |
Character |
This property allows the assignment of a unique printable name to the object for user identification. |
|
Object Type |
Object Type |
This is the object’s type (i.e., analog input, binary input, TCM, PCM, etc.). |
|
Operating Capacity |
Numeric |
This is the current operating capacity of the chiller.Range: 0 to 100 % |
|
Outdoor Air Temperature: Input |
Numeric |
This is the value of the outdoor air temperature input from the chiller.Range: -31.0 to 177.8 °F (-35.0 to 81.0 °C) |
|
Present Value |
Multi-State |
This is used to control the chiller to one of nine standard operation modes. These modes are defined as Unoccupied, Optimal Start, Occupied, Optimal Stop, Demand Limit, Duty Cycle, Priority Shutdown, Night Economize, and Night Heat Cool. A translation (within the BCU) takes place to map these modes into a simpler mode set. |
|
Unit Control Source |
Binary |
This is the control source of the chiller.0 = Local, 1 = Tracer |
|
Unit Control Source: Setup |
Binary |
This is the value used by the BCU to determine which value to communicate to the chiller UCM to request local or Tracer chiller control. (This property feeds the "Unit Control Source: Tracer" property.)0 = Local, 1 = Tracer |
|
Unit Control Source: Tracer |
Binary |
This is the value communicated by the system to the chiller UCM and used to select Local or Tracer control. This property must be set to ‘Tracer’ for Tracer Summit control; otherwise, the chiller will be under local control.0 = Local, 1 = Tracer Default: Tracer |
|
Unit Stop: External Input |
Binary |
This is whether the chiller has been placed in the stop mode by an external input.0 = Stop, 1 = Auto |
|
Unit Stop: ICS |
Binary |
This is whether Tracer has placed the chiller in the stop mode.0 = Stop, 1 = Auto |
|
Unit Stop: Low Ambient |
Binary |
This is whether the chiller has been placed in the stop mode by a low ambient condition.0 = Stop, 1 = Auto |
|
Unit Stop: Menu |
Binary |
This is whether the chiller has been placed in the stop mode by the menu. The chiller will be placed in the stop mode when both refrigerant circuits are disabled.0 = Stop, 1 = Auto |
|
Unit Stop: Operator |
Binary |
This is whether the chiller has been placed in the stop mode by an operator. The chiller will be placed in the stop mode when "0" is selected on the SMM front panel or Auto when "1" is selected on the SMM front panel.0 = Stop, 1 = Auto |
|
Update Tag |
Numeric |
Its purpose is to keep the PC Workstation and BCU copies of the object instance in synchronization. |