N30 Supervisory Controller User`s Manual: Chapter 25: Working
Contents
1. Press the F3 Save key Check the User Assistance area of the screen to verify if the save was successful or if there were errors If errors were detected correct them and resave the entries Once the save is successful continue with Step 7 Press any key to continue Press the F4 Cancel key to return to the container hierarchy Commanding a Runtime Totalization Object To command a Runtime Totalization object 1 2 3 Browse to and highlight a Runtime Totalization object Press the F2 Command key The Command field appears Use the Spacebar and the Backspace key to cycle through the list of commands until the desired command appears The Runtime Totalization object supports the commands identified in Table 25 5 Table 25 5 Supported Commands Command Description 4 Reset Terminates ongoing calculations restores the present value to its initial state creates a reset date and time stamp and reinitializes all Changes of Value Enable Forces a Reset on the Runtime Totalization object and returns it to normal operation Disable Locks out all outputs and prevents functionality of the Runtime Totalization object Temporarily suspends totalization Press Enter 25 10 N30 Supervisory Controller User s Manual Deleting a Runtime Totalization Object To delete a Runtime Totalization object l 2 3 4 Browse to and highlight a Runtime Totalization Press Enter to open the object Press2. the User Assistance area of the screen to verify if the save was successful or if there were errors Press any key to continue Press the F4 Cancel key to return to the container hierarchy Browse to and highlight a Runtime Totalization object Press the F2 Command key Use the Spacebar and the Backspace key to cycle through the list of commands until the desired command appears Press Enter Browse to and highlight a Runtime Totalization object Press Enter to open the object Press the Delete key Press the Tab key to confirm the deletion N30 Supervisory Controller User s Manual 25 7 Detailed Procedures Adding a Runtime Totalization Object To add a Runtime Totalization object 1 Browse to and highlight the container or object where the Runtime Totalization object is to be added 2 Press the F3 Add key The Add Object list appears Select Runtime Totalization and press Enter The Runtime Totalization object attribute screen appears Figure 25 1 Dean ADMIN Mon 20 Sep 1999 13 57 CDT Object Object Name Ss Description Object Type RUNTIME TOTALIZATI Object Category HVAC Enabled True Input Reference Engineering Values Display Reference State 1l States Text States Scalefactor L206 Units hours Totalize Limit hours Display Precision lOths Rollover False F3 Save F4 Cancel Enter an alphanumeric string Figure 25 1 Runtime Totalization Object Attribute Screen 4 Fill in the fi
3. N30 Supervisory Controller Users Manual 25 1 Working with Runtime Totalization Objects Introduction The Runtime Totalization object tracks the number of one minute time intervals that elapse while a designated input such as a binary or multistate value has matched a specified state This chapter describes how to e adda Runtime Totalization object e edit a Runtime Totalization object e command a Runtime Totalization object e delete a Runtime Totalization object November 01 2001 Johnson Controls Inc www johnsoncontrols com Code No LIT 6892250 Software Release 5 0 25 2 N30 Supervisory Controller User s Manual Key Concepts Runtime Totalization Object A Runtime Totalization object accumulates total time only while a particular condition is satisfied for instance Supply Fan 1 is on It answers the question How long and is typically used to even out the use and wear of equipment or to schedule maintenance after a certain amount of use Data is recorded in minutes and converted to hours for the display The Runtime Totalization object can be added to any container or object The Runtime Totalization object references any binary or multistate attribute value for input data for its own calculations Note The Input Reference of a Runtime Totalization object should refer to enumeration or Boolean based attributes in order to perform as intended Runtime Totalization objects referencing other attribute data t
4. ched the currently defined Totalize Limit value Rollover when the Present Value has reached the currently defined Totalize Limit value e Following a return from a Totalization object s disabled state to an enabled state e Termination of ongoing calculations Attributes e Restoration of the Present Value and Rollover Count values to their initial states e Retriggering of all Change of Value state changes The values of an object s attributes determine how the object operates The Runtime Totalization object attributes described below are listed in the order that they appear on the screen Entry requirements for these attributes are in Table 25 4 For additional information about the Runtime Totalization object and its attributes refer to Object Dictionary Object Name Identifies the object on the user interface Description Provides optional information to further describe the object Object Type Indicates the kind of object such as Schedule N2 Analog Input or Runtime Totalization 25 4 N30 Supervisory Controller User s Manual Object Category Determines the general classification of an object to help define user access capability and message routing Enabled Indicates if the object is active and executing an operational condition Input Reference Specifies the object and attribute totalized by this object If this attribute is unreliable or changes from the Reference state to another state to
5. elds using Table 25 4 25 8 N30 Supervisory Controller User s Manual Table 25 4 Attribute Entry Requirements Screen Area Object Engineering Values Display Attribute Object Name Description Object Type Object Category Enabled Input Reference Reference Scalefactor Totalize Limit Rollover States Text Units Display Precision Required No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Press the F3 Save key Default Blank Blank Runtime Totalization HVAC True State 1 1 0 hours False States hours 10ths Options Range Maximum 32 characters Invalid characters If not completed the system assigns a name Maximum 40 characters The default is preset and cannot be changed Use the Spacebar and Backspace key to view and select options HVAC Fire Security Services Administrative Use the Spacebar and Backspace key to view and select options True False If this Runtime Totalization object is being added to a container the exact name of the object and attribute to be totalized must be entered If this Runtime Totalization object is being added to another object the name of that object appears automatically with its Present Value attribute Example HEATING SP Present Value Present Value is the default attribute that appears Use the Spacebar and the Backspace key to cycle through the list o
6. f options 0 to 31 A float value greater than 0 A float value greater than 0 Use the Spacebar and Backspace key to view and select options True False Use the Spacebar and Backspace key to view and select options Refer to States Text in Appendix A Object Enumeration Sets of the Object Dictionary LIT 694980 Use the Spacebar and Backspace key to view and select options Refer to Units Enumeration Set in Appendix A Object Enumeration Sets of the Object Dictionary LIT 694980 Use the Spacebar and Backspace key to view and select options Refer to Display Precision Enumeration Set in Appendix A Object Enumeration Sets of the Object Dictionary LIT 694980 Check the User Assistance area of the screen to verify if the save was successful or if there were errors If errors were detected correct them and resave the entries Once the save is successful continue with Step 7 Press any key to continue Press the F4 Cancel key to return to the container hierarchy N30 Supervisory Controller User s Manual 25 9 Editing a Runtime Totalization Object To edit a Runtime Totalization object l 2 Browse to and highlight a Runtime Totalization object Press Enter to open the object Note Additional attributes appear Refer to the Object Dictionary 7 8 for more information Press the F3 Edit key The Runtime Totalization object attribute screen appears Figure 25 1 Edit the fields using Table 25 4
7. ontainer hierarchy after the object is created Reset Forces a Reset condition after a write of this attribute to True The reading of this attribute always returns a False condition It is not displayed on the attributes screen but it is useful for advanced diagnostics Rollover Count Indicates how many rollovers have occurred since the object started totalization when the Rollover attribute is True This is an internal attribute value It is not displayed on the attributes screen but it is useful for advanced diagnostics 25 6 N30 Supervisory Controller User s Manual Procedure Overview Table 25 3 Working with Runtime Totalization Objects To Do This Add a Runtime Totalization Object Edit a Runtime Totalization Object Command a Runtime Totalization Object Delete a Runtime Totalization Object Follow These Steps Browse to and highlight the container or object where the Runtime Totalization object is to be added Press the F3 Add key Select Runtime Totalization and press Enter Fill in the fields using Table 25 4 Press the F3 Save key Check the User Assistance area of the screen to verify if the save was successful or if there were errors Press any key to continue Press the F4 Cancel key to return to the container hierarchy Browse to and highlight a Runtime Totalization object Press Enter to open the object Press the F3 Edit key Edit the fields using Table 25 4 Press the F3 Save key Check
8. talization is temporarily suspended Reference Defines the state 0 31 totalized as defined in the Input Reference attribute Writing this attribute forces the Reset condition Scalefactor Indicates the value used to scale the totalized value to either a larger or smaller value than would otherwise result Writing this attribute forces the Reset condition Totalize Limit Defines a threshold value that the Present Value must meet or exceed in order for the Runtime Totalization object to take special action The special action taken depends on the setting defined for the Rollover attribute Rollover Defines the special action the Runtime Totalization object must take when the Present Value reaches the Totalize Limit value If the Rollover attribute is set to False the Runtime Totalization object ceases further operation when the Present Value equals or exceeds the Totalize Limit value If it is True it will reset the present Value to 0 0 and resume a new cycle of totalization States Text Indicates the text that appears for the Present Value Units Indicates the measurement units of this object N30 Supervisory Controller User s Manual 25 5 Display Precision Indicates the rounded position and decimal places to display for this object Present Value Represents the current totalized value of the object Writing this attribute forces the Reset condition Present Value appears to the right of the object name in the c
9. the Delete key Press the Tab key to confirm the deletion
10. ypes e g floating point yield unusual results though not necessarily unusable results Neither the VT100 nor Project Builder give an error message when this object is attached to any attribute other than enumeration or Boolean based attributes Typical uses for a Runtime Totalization object are determining e fan or pump runtime e the amount of time a point is in alarm e runtime of fixed loads such as lighting for energy totalization and tenant billback The Runtime Totalization formula and an example are illustrated in Table 25 1 Refer to the Attributes section of this chapter for information about attributes used in the calculation Table 25 1 Runtime Totalization Formula and Example Calculations Runtime Calculation Totalization Formula Present Value current TA 3600 x Scalefactor Present Value new Example 1 5 hours 60 seconds 3600 seconds hour x 1 1 52 hours Note TA represents the time the Input Reference spends in the Reference state N30 Supervisory Controller Users Manual 25 3 Runtime Totalization Object Reset Describes under what conditions the reset of the Runtime Totalization object occurs and what conditions result due to the reset Table 25 2 Runtime Totalization Reset Reset Occurs Results In Conditions e When a Reset Command is received e When the following attributes are rewritten Low Cutoff Value Timebase Scalefactor Reset Totalize Limit when the Present Value has rea
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