N30 Supervisory Controller User`s Manual: Chapter 20: Working
Contents
1. Dean ADMIN Fri O1 Oct 1999 13 58 CDT Object Object Name e Description Object Type LOAD Object Category HVAC Enabled True Setup Comfort Alarm Attr Output Alarm Attr Output Attribute DLLR Object Load Priority 4 Load Locked False Load Use For DL LR Restart Release False Number Of States 2 Alarm Release False Shed State 0 Offline Release False F3 Save F4 Cancel Page Enter an alphanumeric string Figure 20 1 Load Object Attribute Screen 1 of 2 20 8 N30 Supervisory Controller User s Manual Dean ADMIN Fri O1 Oct 1999 13 59 CDT Rate 1 Ts Min Shed Time 1 minute Rate Z 0 0 kW Max Shed Time l minut Rate 3 0 0 kW Min Release Time l minute Rate Units kW Display Precision LOths Advanced Setup Registering Delay 0 second Restart Register False Period 6400 second F3 Save F4 Cancel Page Enter float value greater than or equal to 0 Figure 20 2 Load Object Attribute Screen 2 of 2 4 Fill in the fields using Table 20 2 Table 20 2 Attribute Entry Requirements Screen Attribute Required Default Options Range Area Object Object Name No Blank Maximum 32 characters Invalid characters If not completed the system assigns a name Description No Blank Maximum 40 characters Object Type Yes Load The default is preset and cannot be changed Object Yes HVAC Use the Spacebar and Backspace key to view Category and select options HVAC Fire Security Services Administrat2. help define user access capability and message routing Enabled Indicates if the object is active and executing an operational condition Comfort Alarm Attr Attribute References the attribute supplying the comfort override alarm condition Output Alarm Attr Attribute References the attribute supplying the output alarm condition Output Attribute References the attribute controlling the physical output DLLR Object Identifies the DLLR object that determines the load to be shed Load Priority Specifies the load priority Load Use Specifies the use of the Load object for either DL only LR only or both DL and LR Number of States Indicates the output attribute s number of states Shed State Specifies the output attribute state s to be switched to when the load is shed 20 4 N30 Supervisory Controller User s Manual Load Locked Indicates that the Load object is locked and will not shed its load It does not prevent the load from being released Restart Release Specifies if the load should be released when the Load feature is started Alarm Release Specifies if the load should be released upon release time when the DLLR object is in the alarm state Offline Release Specifies if the load should be released upon release time when it has lost communication with its DLLR object Rate 1 Indicates the absolute power difference when output changes from State 1 to State 0 Rate 2 Indicat
3. Chapter 20 N30 Supervisory Controller User s Manual 20 1 Working with Load Objects Introduction Load objects identify pieces of equipment corresponding to an N2 Binary Output Binary Value BV Multistate Output MSO Multistate Value MSV or Multiple Command MC object that consumes a certain noticeable amount of energy Load objects register with the DLLR Demand Limiting Load Rolling object meaning they let the DLLR know they exist and can be shed to save energy when appropriate This chapter describes how to e adda Load object e edit a Load object e command a Load object e delete a Load object November 01 2001 Johnson Controls Inc www johnsoncontrols com Code No LIT 6892200 Software Release 5 0 20 2 N30 Supervisory Controller User s Manual Key Concepts Load Object Shedding Releasing Attributes This object allows a user to shut off equipment based on the evaluation of information from the DLLR object how much energy is used on average and how much energy does not need to be used One Load object exists for every Load that participates in the DLLR feature The Load object receives a Shed Load command from the DLLR object and takes immediate actions to switch off its associated output which then leads to the actual physical Load shedding causing the desired power reduction The Load object is responsible for monitoring the conditions that require the Load to be released The reque
4. dit a Load Object Command a Load Object Delete a Load Object Follow These Steps Browse to and highlight the Energy container Press the F3 Add key Highlight Load and press Enter Fill in the fields using Table 20 2 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 and highlight a Load object Press Enter to open the object Press the F3 Edit key Edit the fields according to Table 20 2 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 Load object Press the F2 Command key Use the Spacebar and the Backspace key to cycle through the list until the desired command appears Press Enter Browse to and highlight a Load 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 20 7 Detailed Procedures Adding a Load Object To add a Load object 1 Browse to and highlight the Energy container 2 Press the F3 Add key The Add Object list appears 3 Highlight Load and press Enter The first of two Load object attribute screens appears Figure 20 1 and Figure 20 2
5. es the absolute power difference when output changes from State 2 to State 0 Rate 3 Indicates the absolute power difference when output changes from State 3 to State 0 Rate Units Defines unit for demand values for example kW Min Minimum Shed Time Specifies the minimum time in which the Load must be shed Max Maximum Shed Time Specifies the maximum amount of time the load can be shed in minutes This time must be equal to or greater than the Minimum Shed Time Min Minimum Release Time Specifies the minimum amount of time in which the load must be released in minutes N30 Supervisory Controller User s Manual 20 5 Display Precision Indicates the rounded position and decimal places to display for this object Registered Delay Defines the delay in seconds for registering at the DLLR object after the Load object is informed by the DLLR object that it is time to register or after the Load feature is started This attribute can be varied to avoid too many Load objects registering at the DLLR object at the same time and to help in getting a certain order in the DLLR object s database Period Defines the time period of the registering attempts in seconds Restart Register Specifies if the load should register when the Load object is started or restarted 20 6 N30 Supervisory Controller User s Manual Procedure Overview Table 20 1 Working with Load Objects To Do This Add a Load Object E
6. ies the DLLR object that the Load object exists Used if the user suspects the Load object is not registered correctly Release Load Releases and sheds the Load while obeying all constraints concerning the releasing of loads such as when the Minimum Shed Time has not yet elapsed the Load is not yet released but will wait until it becomes eligible to be released Options include e For DL e ForLR e For DL and LR Force Release Load Releases and sheds the load while ignoring all constraints concerning the release of loads Enable Allows the functionality of the Load object and makes the Load available to shed Disable Prevents the functionality of the Load object and makes 5 the Load unavailable to shed If the desired command appears with additional parameters below it press the Tab key to highlight the field and either type in the necessary information or use the Spacebar and Backspace key to cycle through the list of options Press Enter Deleting a Load Object To delete a Load object 1 2 3 4 Browse to and highlight a Load object Press Enter to open the object Press the Delete key Press the Tab key to confirm the deletion
7. is successful continue with Step 7 Press any key to continue Press the F4 Cancel key to return to the container hierarchy 20 10 N30 Supervisory Controller User s Manual Editing a Load Object To edit a Load object 1 Browse and highlight a Load object 2 Press Enter to open the object Note Additional attributes appear Refer to the Object Dictionary for more information 3 Press the F3 Edit key The Load object attribute screen appears Figure 20 1 and Figure 20 2 4 Edit the fields according to Table 20 2 5 Press the F3 Save key 6 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 7 Press any key to continue 8 Press the F4 Cancel key to return to the container hierarchy N30 Supervisory Controller User s Manual 20 11 Commanding a Load Object To command a Load object l 2 3 Browse to and highlight a Load object Press the F2 Command key The Command field appears Use the Spacebar and the Backspace key to cycle through the list until the desired command appears The Load object supports the commands described in Table 20 3 Table 20 3 Supported Commands Command Description Unlock Load Unlocks load making it available to shed Lock Load Locks load making it unavailable to shed Force Register Re notif
8. ive Enabled Yes True Use the Spacebar and Backspace key to view and select options True False Setup Comfort Alarm Yes Blank Enter the exact object and attribute name of the Attribute object controlling Comfort Alarm Output Alarm Yes Blank Enter the exact object and attribute name of the Attribute object controlling Output Alarm Output Yes Blank Enter the exact object and attribute name of the Attribute object controlling the Output DLLR Object Yes Blank Enter the exact name of the DLLR object Load Priority Yes 4 Enter a whole number from 1 to 4 Continued on next page Screen Area Cont Setup Cont Advanced Setup Attribute Load Use Number of States Shed State Load Locked Restart Release Alarm Release Offline Release Rate 1 Rate 2 Rate 3 Rate Units Min Shed Time Max Shed Time Min Release Time Display Precision Registering Delay Period Restart Register Required Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Press the F3 Save key N30 Supervisory Controller User s Manual Default For DL and LR False False False False 0 0 kW 0 0 kW 0 0 kW kW 1 minute 1 minute 1 minute 10ths 0 second 86400 seconds False 20 9 Options Range Use the Spacebar and Backspace key to view and select options For DL only For LR only For DL and LR Enter a whole number f
9. rom 2 to 4 Enter a whole number from 0 and 2 must be at least 2 less than the Number of States Use the Spacebar and Backspace key to view and select options True False Use the Spacebar and Backspace key to view and select options True False Use the Spacebar and Backspace key to view and select options True False Use the Spacebar and Backspace key to view and select options True False Enter a float value greater than or equal to 0 Enter a float value greater than or equal to 0 Enter a float value greater than or equal to 0 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 Enter a whole number Integer value greater than 0 Enter a value greater than 0 or equal to Minimum Shed Time Enter a value greater than 0 or equal to Minimum Shed Time 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 Enter an integer value greater than or equal to 0 Enter an integer value greater than or equal to 0 Use the Spacebar and Backspace key to view and select options False True 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
10. st to release a Load can also come from outside of the Load object To achieve optimal operation the Load object should be placed into the device as close as possible to the device containing the output attribute If comfort override and output alarm checking are defined these attributes should be also very close to the Load object The comfort override attribute and the DLLR may be shared by several Load objects but the output attribute must not be referenced by more than one Load object The Load object interacts with other objects For more information refer to Appendix A Building an Energy Management Application LIT 6892310 in this document The entire process of turning off equipment for DLLR The entire process of turning on equipment shed by DLLR The values of an object s attributes determine how the object operates The Load object attributes described below are listed in the order that they appear on the screen Entry requirements for these attributes are in Table 20 2 For additional information about the Load object and its attributes refer to the Object Dictionary N30 Supervisory Controller User s Manual 20 3 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 Load Object Category Determines the general classification of an object to
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