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Momentum 2009 Spyder® for Plant Control John Hutchey – Lou Jones.

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Presentation on theme: "Momentum 2009 Spyder® for Plant Control John Hutchey – Lou Jones."— Presentation transcript:

1 Momentum 2009 Spyder® for Plant Control John Hutchey – Lou Jones

2 2 Spyder® for Plant Control – Description Overview - Intended for contractors and distributors familiar with Spyder programming - Topics include:  Multiple Spyders on a single piece of equipment  Using the ZIO for local override capability  Using auxiliary IO modules in conjunction with Spyders  Using distributed control architecture for large plants Presenters - John Hutchey - Lou Jones

3 3 Multiple Spyder Approach Application - Large control panel / dense IO count - Point count exceeds that of a single Spyder - Sequence of Operations requires more logic than is available in a single Spyder Examples - Built up AHU - Boiler or chiller plant

4 4 Guidelines Keep IO and logic on the same Spyder - Minimize the amount of data sent between devices AHU example - Spyder #1 controls fans and dampers - Spyder #2 controls temperature and humidity

5 5 Pros and Cons Advantages - Significant hardware cost savings vs. typical plant controller - Flexible IO count  Mix and match Spyder models to match the IO required - Single-tool engineering  All programming performed with WEBs AXs  Apps and macros interchangeable on small and large projects

6 6 Pros and Cons Perceived Disadvantages - Fear of Lon bus failure - Difficult to implement inter-controller communication - Communication failure takes too long to detect - No ability to override IO points

7 7 Lon Bus Failure Mitigation Use a second Lon bus for plant control - Plant bus is electrically isolated - Dedicated bus bandwidth available to plant Spyders Plant Bus Field Bus

8 8 Inter-Controller Communication Software Output Source Point Network Variable Software Input Target Point Network Variable

9 9 Inter-Controller Communication Mechanism - Software Output – Sends data - Software Input – Receives data Efficiency - Group multiple points into a single NV Reusability - Package Software Inputs/Outputs into reusable applications

10 10 Inter-Controller Communication New pre-built library of applications - Download from the Buildings Forum Spyder Sample Apps section - Apps available with different point counts to fit most situations  One digital/enum plus one analog values  One digital/enum, one digital, and two analog values  Five digital/enums and 3 analog values

11 11 How to Use Source Spyder - Add ShareOut application to source Spyder’s control program - Link points to its inputs

12 12 How to Use Target Spyder - Add ShareIn application to target Spyder’s control program - Link points from its outputs

13 13 How to Use Link Spyders - Create a Lon link from source Spyder to target Spyder

14 14 How to Use Link Spyders - Create a Lon link from source Spyder to target Spyder - Change link type to Critical

15 15 How to Use Link Spyders - Create a Lon link from source Spyder to target Spyder - Change link type to Critical - Perform a Bind

16 16 Communication Failure Detection Default failure detection time is 300 seconds - Plant control will likely require a more timely response Alternative- Handle fail detection using program logic - Use application logic to periodically update a sent value on the source device - Use application logic to monitor received value for changes on the target device

17 17 Library Components Fail detect logic is already built in Source Spyder updates every five seconds Target Spyder detects failure after missing three updates Timing is adjustable via NCIs

18 18 Library Components Dedicated comm fail point on each receiving app Also includes configurable delay for return to normal

19 19 How to Use Use COMM_FAIL in conjunction with other logic to protect equipment on loss of communication

20 20 Live Demo Demonstration of data sharing and communication failure detection

21 21 Overriding Points Goal: Modify programming to allow local override of IO points via the TR70 wall module Method: Insert override logic between controlling block and the IO block

22 22 Override Block This block sets its output to the highest priority input that is not invalid.

23 23 TR70 Configuration Add a Value from Wall Module parameter. Be sure to configure: - Default value NULL - Allow null value option

24 24 Linking TR70 override is connected to a higher priority slot than the PID. If TR70 value is invalid, the Override block will output the PID value.

25 25 Auto Operation TR70 override is set to NULL

26 26 Auto Operation TR70 override is set to 90

27 27 Network Override You can also configure the application for Network and Local override capability - Use Network Setpoint parameter type

28 28 Network Override Override data value can be accessed by both the Network and the Wall Module - Last one in wins

29 29 Auxiliary IO Module Approach Application - Project requires hardware overrides on outputs - Logic requires status feedback when override is active Examples - Central plant control Cautions - Do not exceed the logic capacity of your Spyders

30 30 Auxiliary IO Module Approach XIO-4DO Capabilities - Command NVI - Feedback NVO - Hand NVO XIO-4AO Capabilities - Command NVI - Feedback NVO - Hand NVO - Scaling NCI

31 31 How To – XIO4DO XIO-4DO command, feedback, and hand NVs are type SNVT_switch This type of NV must be created using the Spyder NV Configuration View

32 32 How To – XIO4DO Use the Add NV button to create a new NV Then select the type - Network Variable Output to send a command to the XIO

33 33 How To – XIO4DO Set Guaranteed Periodic Refresh to TRUE

34 34 How To – XIO4DO Select Copy From, Standard, then SVNT_switch

35 35 How To – XIO4DO Set the Significant Event Notification to 1 for both the state and value fields

36 36 How To – XIO4DO Click the OK button to save

37 37 How To – XIO4DO Highlight your new NV, then click the Show on wiresheet as Points button.

38 38 How To – XIO4DO State and Value fields of the NV will now be available for use in your application

39 39 How To – XIO4DO Switch to Wire Sheet View - State and value software outputs are visible

40 40 How To – XIO4DO Command the state and value parts simultaneously

41 41 How To – XIO4DO Use the same process to bring feedback into your application

42 42 How To – XIO4DO Create links and bind

43 43 How To – XIO4AO XIO-4AO command NVs are type SNVT_lev_percent - Add a Software Output point - Configure it for Percent

44 44 How To – XIO4AO XIO-4AO feedback, and hand NVs are type SNVT_switch - Must be created using NV Configuration View

45 45 How To – XIO4AO Create links and bind

46 46 Typical Central Plant Control

47 47 Typical Central Plant Control

48 48 Spyder Distributed Plant Control

49 49 Sample code Sample libraries for the items discussed during this presentation are now available on the Buildings Forum

50 50 Questions and Answers

51 www.honeywell.com


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