TAC MICROZONE II PROGRAMMER'S MANUAL

Transcription

1 TAC MICROZONE II PROGRAMMER'S MANUAL LITHO IN U.S.A. 8/08 F

2 How to use this Manual This manual is intended for TAC PERSONNEL. It is a supplement to the training available through the TAC TRAINING CENTER. This reference manual will be an aid to the application engineer in the programming of the control applications within the TAC NETWORK 8000 MICROZONE II controllers. The programmer must be familiar with the operation of the TAC NETWORK 8000 system to properly engineer and program the control and energy management applications. The APPENDIX at the back of this manual contains information on the SGRP (SEND GROUP DATA) and the ZONE2 (TAC MICROZONE II) blocks. These blocks reside in the TAC NETWORK 8000 GCM-8xx2x controllers. This information is needed for programming the parent GCM controller as part of an integrated TAC NETWORK 8000 System using TAC MICROZONE II controllers. The SGRP (SEND GROUP DATA) and the ZONE2 TAC (MICROZONE II) blocks will be incorporated in a future release of the TAC GCM/LCM PROGRAMMER'S MANUAL F FCC NOTE This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures. - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/tv technician for help. DOC This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the radio interference regulations of the Canadian Department of Communications. Disclaimer All specifications are nominal and may change as design improvements occur. TAC shall not be liable for damages resulting from misapplication or misuse of its products. Revisions TAC reserves the right to update technical documentation at any time. TAC will issue revisions as specifications change and design improvements occur.

3 Table of Contents Table of Contents Introduction... 1 Tutorial... 3 Introduction... 3 Off-line operation... 5 On-line operation... 9 Programming Basics Introduction System Architecture The Block Programming Concept TAC MICROZONE II Blocks Block execution Basic Block Description Example of Block Programming Common Block Attributes Time and Date Devices with Clock Devices without Clock Valid and invalid time conditions System Resets Power Failure Reset Momentary Power Glitch Reset Sending a New File to a Device Reset Button PSI Reset Block Reset <Alt> R Number system Block Inputs Device Setup User Access Override Point History Log Points History Data BLOCKS - General AO - Analog Output Block Attributes Parameters Inputs Table of Contents Copyright 2008 TAC. All Rights Reserved. i

4 Table of Contents Outputs Applying the block DO - Digital Output Block Attributes Parameters Inputs Outputs Applying the block EMS - EMS Input Block Attributes Parameters Inputs Outputs Applying the block HOLI - Holiday Schedule Block Attributes Parameters Inputs Outputs Applying the block LOOP - General LOOP - One setpoint, Dir/Rev output Attributes Parameters Inputs Outputs Applying the block LOOP - Two SP, combined output Attributes Parameters Inputs Outputs Applying the block LOOP - One setpoint / Two output Attributes Parameters Inputs Outputs Applying the block ii Copyright 2008 TAC. All Rights Reserved. F

5 Table of Contents LOOP - Two setpoint, Two output Attributes Parameters Inputs Outputs Applying the block LOOP - Offset setpoint, Two Output Attributes Parameters Inputs Outputs Applying the block LOOP - ASHRAE Cycle Attributes Parameters Inputs Outputs Applying the block LOOP - ASHRAE Cycle Attributes Parameters Inputs Outputs Applying the block LOOP - ASHRAE Cycle 2 with cooling Attributes Parameters Inputs Outputs Applying the block LOOP - ASHRAE Cycle Attributes Parameters Inputs Outputs Applying the block LOOP - ASHRAE Cycle 3 with cooling Attributes Parameters Table of Contents Copyright 2008 TAC. All Rights Reserved. iii

6 Table of Contents Inputs Outputs Applying the block OSS - Optimum Start Stop Block Attributes Parameters Inputs Outputs Applying the block RESET - Setpoint reset Attributes Parameters Inputs Outputs Applying the block Reset Function using Utility Blocks Direct Action Reset Reverse Action Reset RGRP - Receive Group Data Block Attributes Parameters Inputs Outputs Applying the block SCHED - Schedule Block Attributes Parameters Inputs Outputs Applying the block Scheduling Examples Simple time of day schedule Schedule interaction Interface with the HOLI block Regular and holiday schedules SEQ - Sequence Block Attributes Parameters Inputs iv Copyright 2008 TAC. All Rights Reserved. F

7 Table of Contents Outputs Applying the block Linear Sequencing DIRECT LINEAR Operation REVERSE LINEAR Operation LINEAR Operation BINARY Sequencing DIRECT BINARY Operation REVERSE BINARY Operation Binary with interstage delay UI - Universal Input Block Attributes Parameters Inputs Outputs Active Attribute Table Applying the block Switch Types Thermistor Example Balco Example Copper Example Platinum Example Current 4 to 20 ma Example to 5 VDC Example Digital Input Example Pulse Counter Example Potentiometer Interface Example UTILITY BLOCK-General UTIL - Counter function Attributes Parameters Inputs Outputs Applying the block UTIL - Drive function Attributes Parameters Inputs Outputs Table of Contents Copyright 2008 TAC. All Rights Reserved. v

8 Table of Contents Applying the block UTIL - Flow detect function Attributes Parameters Inputs Outputs Applying the block UTIL - Limit function Attributes Parameters Inputs Outputs Applying the block UTIL - Logic function Attributes Parameters Inputs Outputs Applying the block UTIL - Math function Attributes Parameters Inputs Outputs Applying the block UTIL - Momentary Start / Stop function Attributes Parameters Inputs Outputs Applying the block UTIL - Process Alarm Function Attributes Parameters Inputs Outputs Applying the block UTIL - PWM Function Attributes vi Copyright 2008 TAC. All Rights Reserved. F

9 Table of Contents Parameters Inputs Outputs Applying the block Time Proportioned Control Fixed Duty Cycle Control Compensated Duty cycle PWM for an actuator UTIL - Selection function general UTIL - Selection block, Switch function Attributes Parameters Inputs Outputs Applying the block UTIL - Selection block, High/Low Selection Attributes Parameters Inputs Outputs Applying the block UTIL - Selection block, Loop invert function Attributes Parameters Inputs Outputs Applying the block UTIL - Status function Attributes Parameters Inputs Outputs Applying the block UTIL - Thermostat function Attributes Parameters Inputs Outputs Applying the block Table of Contents Copyright 2008 TAC. All Rights Reserved. vii

10 Table of Contents UTIL - Timer function-general UTIL - Timer function, ON delay Attributes Parameters Inputs Outputs Applying the block UTIL - Timer function, OFF delay Attributes Parameters Inputs Outputs Applying the block UTIL - Timer function, Dual delay Attributes Parameters Inputs Outputs Applying the block UTIL - Timer function, Min ON Attributes Parameters Inputs Outputs Applying the block UTIL - Timer function, Min OFF Attributes Parameters Inputs Outputs Applying the block UTIL - Timer function, Dual min Attributes Parameters Inputs Outputs Applying the block WINDO - Window block Attributes viii Copyright 2008 TAC. All Rights Reserved. F

11 Table of Contents Parameters Inputs Outputs Applying the block Table of Contents Copyright 2008 TAC. All Rights Reserved. ix

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13 Introduction Introduction Intended Audience Prerequisites What this manual is about This reference manual is intended to be an aid in the programming of the control applications within the TAC NETWORK 8000 MICROZONE II controllers. The programmer must be familiar with the operation of the TAC NETWORK 8000 system to properly engineer and program the control and energy management applications. The programmer should be familiar with the complete overview of the TAC NETWORK 8000 system as presented in the OVERVIEW OF TAC NETWORK 8000 Independent Study Course #3119 available through the TAC TRAINING PROGRAM. This field study course provides workbooks, videotapes, and hardware exercises. Some of the subjects covered, exercised, and self tested include: An overview of the architecture and function of the system, system access and operation, exception annunciation, editing, and typical diagnostics and troubleshooting tips. The programmer may want to complete the TAC NETWORK 8000 MICROZONE II ENGINEERING COURSE offered through the TAC TRAINING PROGRAM. This course provides an intensive class that teaches the proper methods to successfully engineer and start up TAC MICROZONE II jobs. Topics include TAC MICROZONE II component structure, block programming skills, product setup, and operations. Training is developed through the use of simulators and engineering work stations. Documentation procedures are presented as well as other tools necessary for the successful implementation of your DDC projects. This manual is a detailed block programming reference manual. Reference information is provided on the block programming concept for the TAC MICROZONE II controller. The basic rules for programming the blocks within the TAC MICROZONE II controller are presented. The block section contains detailed reference information for each of the blocks within the TAC MICROZONE II application software. Illustrations of the blocks used in typical applications are also presented. The blocks within this section are presented in alphabetical order according to the abbreviated name. Configurations within a particular block are presented in the order of appearance in the configuration selection list. It is recommended that you become familiar with the structure of these sections. A tutorial section is provided for the users of the PSI (Personal System Interface) and the TAC MICROZONE II controller. The purpose of this tutorial is to familiarize the programmer through hands-on interaction with the PSI software in the programming and checkout of an application within the TAC MICROZONE II controller. The PSI will be used throughout this tutorial to program the controller. A tutorial on the PSI operations is found Introduction Copyright 2006 TAC. All Rights Reserved. 1

14 Introduction Applicable Documentation in the PSI Programmer's Manual and should be executed before begining the next section. Other documentation that may be helpful on this product. PSI Installation Instruction (F-23056) - Provides information on installing the PSI (LAPT PSI) software into both Personal Computers and the ATARI Portfolio *. PSI Programmer's Manual (F-23117) - Provides information on the operation of the PSI (LAPT PSI) software within both the Personal Computer and the ATARI Portfolio. Portfolio Hand Held Computer Owner's Manual - Provides general information on the ATARI Portfolio, its operating system, its incorporated applications, error messages, etc. Portfolio Smart Parallel Interface Owner's Manual - Provides general information on the ATARI Portfolio Parallel Interface, how to install and de-install it, how to do file transfers, troubleshooting help, etc. MS-DOS * or PC-DOS based personal computer Manual - Provides general information on the use of the DOS operating system, its incorporated applications, error messages, etc. * Atari, the Atari logo, and Portfolio are or of Atari Corporation. * MS-DOS is a registered trademark of Microsoft Corporation. 2 Copyright 2006 TAC. All Rights Reserved. F

15 Tutorial Tutorial Introduction What you need to perform this tutorial: Interfacing with the TAC MICROZONE II controller is achieved with the use of an ATARI or a Personal Computer running the TAC MICROZONE II PSI software. The basic operation is covered in the PSI Programmer's Manual (F-23117). The purpose of this tutorial is to familiarize the programmer with the programming and checkout of an application within the TAC MICROZONE II controller. The functions that will be demonstrated will include: OFF-LINE operation. With the use of the PSI program we will demonstrate the creation of a new application program (File) and the editing of this new application program. ON-LINE operation. The PSI program will be interfaced with the TAC MICROZONE II controller. This will provide the ability to download a file to a controller, verify that the program was successfully transferred to the controller and checkout the operation of the application using the CURRENT STATUS, TREND and OVERRIDE functions. This tutorial is set up so that the operator can interface directly with the TAC MICROZONE II controller through an ATARI Portfolio or PC. Some wiring will be required as shown on the wiring diagram. Equipment needed: TAC MICROZONE II controller. Line to 24 VAC transformer, 20 VA, 60 Hz or 30 VA, 50 Hz. Line cord for transformer. Single pole, single throw switch or equivalent. 250Ω ± 1%, 50 ppm, 1/4 watt resistor (TAC part number AD , kit of six resistors). Wire - 22 to 18 gauge, lengths as required. Shielded wire is not required for this tutorial. PSI software on an ATARI or PC. The PSI software must include the TUTORIAL file (TUTORIAL.MZ2) in the same DOS subdirectory. ASD bus interface (EMSC-413 for ATARI Portfolio). Note: This tutorial can be performed using the EMSC TAC MICROZONE II Demonstrator. This demonstrator can be purchased from TAC. Setup and wiring instructions for using the demonstrator are located at the end of this Tutorial section. Tutorial Copyright 2006 TAC. All Rights Reserved. 3

16 Tutorial Setup of the Hardware Wire the MICROZONE II controller as shown: Note: This tutorial can be preformed with a TAC MICROZONE II controller where the inputs and the outputs have not been wired, however, some of the operations described in this tutorial will not be able to be completed as described. The PC or Atari Portfolio hardware needs to be assembled as shown: For assembly details see the PSI Programmer's Manual (F-23117). The PSI software should be loaded into the ATARI or the PC. To perform the tutorial, the PSI software must include the TUTORIAL file. For details on how to load the PSI software and how to run the PSI program see the PSI Installation Instruction (F-23056). 4 Copyright 2006 TAC. All Rights Reserved. F

17 Tutorial Off-line operation Introduction Start-up File creation Even when the PSI is not connected to a controller, a number of functions can be performed. These include: EDIT - FILES, and PSI SETUP. As an off line operation, we will create, edit, and save a new file. Later we will download this file into the TAC MICROZONE II controller which we prepared for our on line operation. This tutorial assumes that the reader is familiar with the PSI setup and operations as described in the PSI Programmer's Manual (F-23117). Log on to the PSI. The user must log on with a username USER and password PASS. This username and password should be set up in the PSI with a level 6 access. Level 6 provides full access to all of the programming functions of the system. First make a copy of the TUTORIAL file and name it AHU_2. The steps required to accomplish this are as follows: Select FILES from the Functions menu. Select COPY from the Files operations menu. Select the TUTORIAL file. When prompted, enter AHU_2 <ENTER> to ccreate a copy of the TUTORIAL file Now the Files list will contain a new file called AHU_2. No Connected Device Operations GET SEND COPY DELETE Files AHU_2 TUTORIAL No Connected Device Directory: [C:\PSI\MZ2] No Connected Device Operations GET SEND COPY DELETE Files -DIR- AHU_2 TUTORIAL Editing a file Atari Portfolio Screen PC Screen EDIT the AHU_2 file. Go to the Functions menu and select EDIT. Note: To get to the main menu press <Esc> repeatedly until the Functions menu appears or press the Tab key. We wish to edit a file in the PSI database so we must select FILE. Select the AHU_2 file to edit. Files Edit -NEW- DEVICE AHU_2 FILE TUTORIALAO:1 AO:2 AO:3 -SETUP- -ACCESS- Data List <MIX AIR > <HT VALVE> < > Note: If the tutorial is being performed on a PC, the list of attributes displayed is longer than on the Portfolio. Tutorial Copyright 2006 TAC. All Rights Reserved. 5

18 Tutorial Using the arrow keys, review the list of blocks. The list should contain the following active blocks: AO:1 <MIX AIR > AO:2 <HT VALVE> AO:4 <Signal > DO:1 <CL 1 > DO:2 <CL 2 > DO:3 <CL 3 > DO:4 <CL 4 > DO:5 <FAN > LOOP:1 <Ht/Cl > UI:1 <FAN S/S > UI:3 <ZONE T > UTIL:25 <Speed > UTIL:26 <Off Dely > UTIL:27 <Hold Sw > UTIL:28 UTIL:29 UTIL:30 <Ramp Spd> <Ramp Gen> <Ramp Lmt> Note: The complete list of blocks will be displayed. However, only the blocks which have been assigned names will be classified as active blocks in this tutorial presentation. The complete diagram of how these blocks are interconnected is shown in the next figure. The utility blocks below the solid line are used to generate a simulated temperature fluctuation between 50 F and 90 F. This signal is interconnected between AO:4 and UI:3 as the zone sensor temperature. The blocks above the solid line are used in the tutorial application. 6 Copyright 2006 TAC. All Rights Reserved. F

19 Tutorial UI:1 DO:5 Fan Fan Start/Stop FAN S/S FAN DO:1 CL 1 Stage 1 Cooling SEQ:1 DO:2 CL 2 Stage 2 Cooling 250 ž Resistor + UI:3 ZONE T - 1 to 5 VDC 50 to 90 F UI:2 OUT FLOW ON ON 10% LOOP:1 ENABL OCCUP INPUT AV SP REVAV TR ECAV ECENA ECMIN HT/CL ASHRAE Cyle 2//Cool ECCL= Disabled CL SEQ DO:3 CL 3 DO:4 CL 4 AO:2 HT VALVE AO:1 MIX AIR Stage 3 Cooling Stage 4 Cooling Heating Valve Mixed Air Damper If device is not wired, point LOOP:1ENABLE to UTIL:25 OUT1. UTIL: UTIL:27 Simulated temperature generator OFF.3 Min Off Delay TIMER UTIL: Ramp Spd Hold Sw UTIL: Ramp Gen UTIL:25 Speed (A1+A2)/A3 AO:4 Signal UTIL:30 AI OUT1 SP INDIF Ramp Lmt TSTAT Completing the application To complete the tutorial application it will be necessary to add two more blocks to the active list. These blocks are shown in the diagram with dashed outlines. The first block we will add will be UI:2. Use the arrow keys to locate and select UI:2. Edit Files -NEW- Data List SCHED:4 < > DEVICE AHU_2 SEQ:1 < > FILE TUTORIALSEQ:2 < > UI:1 <FAN S/S > UI:2 < > EDIT the UI:2 block Edit UI:2 to make it a direct acting digital input point. Tutorial Copyright 2006 TAC. All Rights Reserved. 7

20 Tutorial Edit the UI:2 block to contain the following attributes: CONFG = DIRECT DIGITAL NAME = UNITS = FLOW DIGTL DIRECT DIGITAL FLOW DIGTL -Outputs- Edit Block: UI:2 < > -Parameters- <CONFG> <NAME> <UNITS> EDIT the SEQ:1 block As learned during the PSI tutorial, you can save these changes to the file by pressing Alt S. If you forget to save the changes and try to leave the block by pressing Esc, you will be prompted with a message asking if you want to save these changes before quitting the edit function. If you were to enter N for NO, any modifications you may have made since the last time the block was saved will not be made and you will exit from the block. If you enter Y for YES, the block modifications will be saved to the file. The second block we will add will be SEQ:1. Use the arrow keys to locate and select SEQ:1. Edit SEQ:1 to make it a four stage sequencer to perform the staged mechanical cooling. The block should be setup to contain the following attributes: -Parameters- NSTAG = 4STAGES NAME = CL SEQ ACTON = DIR LINEAR -Inputs- AI = LOOP:1:AV DELAY = 0.0 SEC Edit Block: SEQ:1 < > -Parameters- <NSTGS> <NAME> <ACTON> 4 STAGES CL SEQ DIR LINEAR -Inputs- Note: The pointer assignment for the analog input (AI) attribute can be setup using one of two methods. First, with the cursor located at the AI attribute, you can type in the attribute LOOP:1:AV Ret. Secondly, with the cursor located at the AI attribute, you can press Alt P for pointer help. A list of all of the blocks will be displayed. Select the LOOP:1 block and a list of all the available outputs will be displayed. Select the AV output. 8 Copyright 2006 TAC. All Rights Reserved. F

21 Tutorial LOOP:1:AV 0.0 -Outputs- ***** Edit Block: SEQ:1 < > -Inputs- <AI> <DELAY> <STAG1> SEC Naming the device Save the changes to the file. Verify that the block list now contains the two new active blocks, SEQ:1 <CL SEQ > and UI:2 <FLOW >. Note: To make a block not active, edit the block and select NOT USED as its configuration. Last, this application will be applied theoretically in a TAC MICROZONE II controlling one of the air handlers (AHU 2) in section 1 of our building. We can add a descriptive device name to this file which can be helpful when we monitor different controllers within a system. A descriptive name for the device can be assigned under -SETUP- in the data list menu. Select SETUP and scroll down to <DEVIC> and add a device name such as Sec1 Zn2 to this file. Files Edit -NEW- DEVICE AHU_2 FILE TUTORIALAO:1 AO:2 AO:3 -SETUP- -ACCESS- Data List <MIX AIR > <HT VALVE> < > <UNIT2> <UNIT3> <UNIT4> <DEVIC> <APPL > Edit Block: -SETUP- GPM kpa Lsec Sec1 Zn2 NONE Use <ALT> S to save this new setup and <ESC> to the main function menu. If this tutorial is to be preformed with a TAC MICROZONE II controller where the inputs and the outputs have not been wired, it will be necessary to modify (edit) the LOOP:1 block. Change the INPUT pointer to UTIL:25:OUT1. In this OFF-LINE tutorial we have learned through the use of the PSI program how to create of a new application program (File) by coping an existing file. We learned how to edit the new application blocks and setup. We now have an application file which we can download into a TAC MICROZONE II controller and by using the PSI program interact with it dynamically in an on-line operation. On-line operation Introduction When the PSI is connected to a TAC MICROZONE II controller, all of the functions can be performed. These include: CURRENT STATUS, EDIT, SYSTEM, TREND, DEVICE NUMBER, NODE LIST, FILES, and PSI SETUP. As an on line operation, we will download a file into a TAC MICROZONE II controller, we will checkout the operation of this application using Tutorial Copyright 2006 TAC. All Rights Reserved. 9

22 Tutorial Setup the current status, trend, edit, and override features. We will also upload and delete files. The application AHU_2 has been designed to provide both an user interactive simulator to learn how to use the functions of the PSI and a simulated application in which good software checkout procedures can be practiced. Connect the PSI interface to the TAC MICROZONE II controller by inserting the RJ-12 plug into the receptacle on the TAC MICROZONE II controller. The TAC MICROZONE II controller should be wired as shown in the wiring diagram. The switch wired to IN1 (input 1) should be open (OFF). The address switch on the controller should be set to address #1. Apply power to the MICROZONE II controller. Log On to the PSI (User must log on with a username of USER and password of PASS). When the function menu appears, the device type and address to which the PSI is connected will appear in the header if you are using an Atari Portfolio. The name that was assigned to the device will also appear in the header after a control program with a device name has been downloaded into the device. If you are using a PC, the header will indicate "No Connected Device", press the backspace key to initiate the communication function. 10 Copyright 2006 TAC. All Rights Reserved. F

23 Tutorial HEADER Device: MZII #001 < > Functions CURRENT STATUS EDIT SYSTEM TREND DEVICE NUMBER Downloading a file into a controller If the header indicates "No Connected Device", make sure that the Atari or PC is properly connected to the controller and try logging on again or press the backspace key to initiate the communications link again. Download the AHU_2 file into the TAC MICROZONE II controller. Select FILES from the main function menu. Select SEND file. Select the file to be sent to the controller (AHU_2), press Return. Device: MZII #001 < > Operations Files GET AHU_2 SEND TUTORIAL COPY DELETE The device address to which we want to send this file is one (1). Device: MZII #001 < > Operations Files GET AHU_2 Enter Device Number to Send To SEND TUTORIAL 1 COPY DELETE The PSI will respond with a number of quick flashes of Loading File and sending User Access Data screens ending up with the Sending the Control Program screen. Sending the control program will take a few seconds. Sending Control Program Verifying a file in a controller To verify that the file was successfully loaded into the controller, ESC back to the Function Menu. Select EDIT, then select DEVICE (not the FILE). The PSI will respond with a screen indicating that the program is being uploaded into the computer and show the Data List. Review the items in the Data List. The list should contain all the setup information and the active blocks that were set up in the file during the off-line session. If the download was not successful, diagnostic screens will be displayed indicating why. For example, if the ASD communications wire is not connected to the controller when a download is attempted, a communications error will be displayed. Correct the problem and retry the download function. Tutorial Copyright 2006 TAC. All Rights Reserved. 11

24 Tutorial Editing a program in a controller CURRENT STATUS Operation CURRENT STATUS on the Personal Computer When editing the control program in a device, a copy of the program is uploaded into the computer. The PSI editor allows the user to view and change the data in this working file. If changes are made to any item in the data list, the user can save the changes by pressing (Alt S). The changes will be saved to the working file in the computer and sent down to the controller where the changes are made to the database in the device. Note: Changes to the control program are not saved in the device until you type <ALT> S or ESC to leave the block and save the changes. The working file in the computer is the file in the editor and is NOT the original stored file. If the user makes changes and forgets to save them, he will be prompted, when leaving the block, with a request to either save the changes or exit the item without saving. If he chooses to exit without saving, the changes made since the last time a save was done will be lost. Note: These changes will not be saved to the original file in the PSI until an upload (GET file) is done and saved to a file name with the same name. For example: If we were to edit the Device Name under SETUP to a new name such as Sec1 Ut2, we would edit the device name, and save (<Alt> S) the changes. The changes will be saved to the working file in the computer and sent down to the controller where the changes are made to the file in the device. The AHU_2 file in the PSI will still have the device name as Sec1 Zn2. To keep both the device file and the file in the PSI current, it is wise to do an upload (GET file) periodically and save it as the same name (in this case AHU_2) in the PSI. Select CURRENT STATUS on the Functions menu. The current status function allows the user to monitor the real time values of the physical input and output points. The CURRENT STATUS function behaves differently on the PC version then on the Atari version. Instructions for each are described below: The CURRENT STATUS screen on the Personal Computer displays all of the active inputs and outputs. The name assigned to each of the points is displayed after the point number. The current point value is displayed in both text and graphical formats. 12 Copyright 2006 TAC. All Rights Reserved. F

25 Tutorial Universal Input Block/Point Number Analog Output Block/Point Number Digital Output Block/Point Number Point Names INPUTS: 1 FAN S/S 2 FLOW 3 ZONE T ANALOG OUTPUTS: MIX AIR HT VALVE Signal Universal Input Values OFF OFF 69.4 DEG F 0.0% 0.0% 50.1% Connected Device ID MZ2:1 Graphical Representation of Analog Values DIGITAL OUTPUTS: 1 CL 1 2 CL 2 3 CL 3 4 CL 4 OFF OFF OFF OFF FAN OFF Digital Output Values Analog Output Values Graphical Representation of a Digital Value Analog Inputs as displayed on the PC Lets take a closer look at the representation of the analog inputs. The analog input values are displayed both in text and in bar chart format. The real time updated text value and its graphical representation are displayed side by side. In this example, the UI range for the bar chart is from 0.0 to units. This range applies to all of the displayed analog input values only. It is the intent of this bar chart to be used for monitoring increasing, decreasing, or stable trends. INPUTS: 1 FAN S/S 2 FLOW 3 ZONE T ANALOG OUTPUTS: OFF OFF 69.4 DEG F MZ2: Analog Value Scale 69.4 UI RANGE: 0.0 to The UI RANGE can be changed by pressing the F1 key. The UI range values can be assigned between and The MIN value must be less than the MAX value by at least 1.0 for the display to operate properly. Tutorial Copyright 2006 TAC. All Rights Reserved. 13

26 Tutorial Digital Inputs as displayed on the PC The value assigned as MIN will be the left extent of the bar chart and the value assigned as the MAX will be the right extent of the bar chart. After the values have been assigned, it will be necessary to save the changes, <Alt> S. The values assigned will remain active until they are changed or you exit the PSI program. The range is not displayed on the Current Status screen pressing the F1 key is the only way of verifing the assigned range. Active digital values will be shown as square boxes. If the box has a dot in its center, it is ON. If the box has no dot, it is OFF. Graphical Representation of a Digital Value Relay ON Relay OFF Analog Outputs as displayed on the PC The real time updated analog output values are displayed both in text and bar chart format. The scale for the bar chart is from 0.0 to 100.0% for all analog output values. This scaling is fixed and cannot be changed. It is the intent of this bar chart to be used for monitoring increasing, decreasing, or stable trends. Digital Outputs as displayed on the PC The range of 0 to 100% is not displayed on the Current Status screen The a ctive digital output values will be shown as square boxes. If the box has a dot in its center, it is ON. If the box has no dot, it is OFF. Graphical Representation of a Digital Value Relay ON Relay OFF CURRENT STATUS display on the ATARI Portfolio When the ATARI Portfolio is used for viewing the CURRENT STATUS there are five types of displays available to monitor these values. These include: 1. ALL POINTS 2. NAMED INPUTS 3. NAMED OUTPUTS 4. GRAPHICAL INPUTS 5. GRAPHICAL OUTPUTS 14 Copyright 2006 TAC. All Rights Reserved. F

27 Tutorial ALL POINTS display on the ATARI Portfolio By using the ATARI key, you can choose which type of display you wish to view. The ALL POINTS display is the default screen selection. The ALL POINTS display provides a screen with all of the physical input and output values displayed in a text format. Real time updated values will be shown next to their associated point block. The assigned engineering unit will be displayed with the analog values. Digital values will be shown as OFF or ON. Analog outputs will be the OUT attribute values of the AO block and indicated as 0 to 100%. Blocks that are "NOT USED" display values of "--". NAMED INPUTS display on the ATARI Portfolio Press the ATARI key and choose to view the NAMED INPUTS display. The NAMED INPUTS display provides a screen with all of the physical input values shown with their assigned point names. The real time updated values will be displayed in a text format. The assigned engineering unit will be displayed with the analog values. Digital values will be shown as OFF or ON. NAMED OUTPUTS display on the ATARI Portfolio Press the ATARI key and choose to view the NAMED OUTPUTS display. The NAMED OUTPUTS display provides a screen with all of the physical output values shown with their assigned point names. The real time updated values will be displayed in a text format. Digital values will be shown as OFF or ON. Analog outputs will be the OUT attribute values of the AO block displayed as 0 to 100%. Tutorial Copyright 2006 TAC. All Rights Reserved. 15

28 Tutorial Digital Output Values Point Name Analog Output Digital Output Block/Point Number Block/Point Number Point Name Analog Output Values DO:1 CL 1 2 CL 2 3 CL 3 4 CL 4 5 FAN OFF OFF OFF OFF OFF AO:1 MIX AIR 0.0% 2 HT VALVE 0.0% 3 4 Signal 50.1% MZ2:001 Connected Device ID GRAPHICAL INPUTS display on the ATARI Portfolio Press the ATARI key and choose to view the GRAPHICAL INPUTS display. The GRAPHICAL INPUTS display provides a screen with all of the physical input values displayed in a graphical format. The real time updated values will be displayed as a bar chart. Universal Input Block/Point Number Graphical Representation of a Digital Value Graphical Representation of a Analog Value UI: UI RANGE: 0.0, MZ2:001 Analog Value Scale Connected Device ID The scale for the bar chart is indicated at the bottom of the screen. In this example, the range is from 0.0 to units. This range applies to all of the displayed analog values. It is the intent of this display to be used to monitor increasing, decreasing, or stable trends. Note: The Analog Value Scale shown on the next display is not an active part of the display but rather shown for clarification only. The RANGE for the bar chart can be changed by pressing the ATARI key and selecting 6. RANGE from the Curstat Modes list. Curstat Modes 2. NAMED INPUTS 3. NAMED OUTPUTS 4. GRAPHICAL INPUTS 5. GRAPHICAL OUTPUTS 6. RANGE 16 Copyright 2006 TAC. All Rights Reserved. F

29 Tutorial The UI range values can be assigned between and The MIN value must be less than the MAX value for the display to operate properly. The value assigned as MIN will be the left extent of the bar chart and the value assigned as the MAX will be the right extent of the bar chart. After the values have been assigned it will be necessary to save the changes. The values assigned will remain active until they are changed or you exit the PSI program. <MIN > <MAX > UI RANGE: -Parameters Change the MIN value to 50.0 and the MAX value to After the values have been changed it is necessary to save (<Alt S>) the changes before the graphical inputs can be viewed with the new bar chart scaling. Return to the GRAPHICAL INPUTS display by pressing the <ESC> key. <MIN > <MAX > UI RANGE: -Parameters Active digital input values will be shown as square boxes. If the box has a dot in its center, it is ON. If the box has no dot, it is OFF. Graphical Representation of a Digital Value Relay ON Relay OFF GRAPHICAL OUTPUTS display on the ATARI Portfolio Press the ATARI key and choose to view the GRAPHICAL OUTPUTS display. The GRAPHICAL OUTPUTS display provides a screen with all of the physical output values displayed in a graphical format. The real time updated analog output values will be displayed as a bar chart. The scale for the bar chart is from 0.0 to 100.0% for all analog values. It is the intent of this display to be used to monitor increasing, decreasing, or stable trends. Tutorial Copyright 2006 TAC. All Rights Reserved. 17

30 Tutorial Analog Output Block/Point Number Graphical Representation of a Analog Value AO: DO: MZ2:001 Active digital output values will be shown as square boxes. If the box has a dot in its center, it is ON. If the box has no dot, it is OFF. Graphical Representation of a Digital Value Relay ON Relay OFF Monitoring Active Point Values using CURRENT STATUS We will now review the control application AHU-2 and verify its operation using the different CURRENT STATUS monitoring screens. The control loop is set up to provide ASHRAE Cycle 2 with Cooling operation, For details on the ASHRAE Cycle 2 with Cooling operation refer the the section in this manual which describes control LOOPs. Note: You may want to refer back to the figure.at the begining of this tutorial section which shows the complete diagram of how the blocks are interconnected in the AHU_2 application. The utility blocks below the solid line are used to generate a simulated temperature fluctuation between 50 F and 90 F. The blocks above the solid line are used in the tutorial application. The temperature signal generator will output approximately 70 F when the FLOW input is OFF. This temperature signal generator will begin ramping after the FLOW input is ON, and continue to ramp (up and down) between 50 and 90 F. When the FLOW input is changed to OFF, the temperature signal generator will continue to ramp for 15 seconds before it returns to its 70 F start point. If this tutorial is to be preformed with a TAC MICROZONE II controller where the inputs and the outputs have not been wired it will be necessary to OVERRIDE UI:1:OUT1 and UI:2:OUT1 to ON. To accomplish this perform the following steps: Press the TAB key to return to the function menu. Select SYSTEM from the function menu. Select OVERRIDES. Select UI:1. Select FOREVER and ON Send/Save the override (<Alt>S). Select UI:2. Select FOREVER and ON Send/Save the override (<Alt>S). 18 Copyright 2006 TAC. All Rights Reserved. F

31 Tutorial These overrides will remain in affect until they are CLEARED. Press the TAB key to return to the function menu and select CURRENT STATUS or press the C key. Note: When viewing the CURRENT STATUS screen you will note that there is a next to the UI:1 and UI:2 inputs. This indicates that the values are overriden. On a PC, the override is shown as OV next to the assigned point name. If this tutorial is preformed with a TAC MICROZONE II controller where the inputs and the outputs have been hard wired it will be necessary to turn the fan start/stop switch ON. This is the switch wired, to input 1 (UI:1). Select the CURRENT STATUS function and review the sequence of operation below for the control application AHU-2 using the different CURRENT STATUS monitoring screens. Sequence of operation AHU Startup and Shutdown When the fan is OFF, the mechanical cooling equipment will be OFF, the outdoor air damper will be closed and the heating valve will be shut. The closing and opening of the manual Fan Switch (UI:1) will start and stop the fan control contactor (DO:5). Note: If the device is not wired, the sequence can be controlled by Overriding the output of the FLOW detect input UI:2 - ON and OFF. When the fan is running, the air flow sensor (typically a differential pressure switch) will start the control sequence. In this example, the air flow input (UI:2) enables the control loop. The control loop (LOOP:1) is set up to provide ASHRAE Cycle 2 with Cooling operation. The control setpoint is set for 70 F. Note: The Throttling Range is set at 20 F for the purpose of demonstration only. Mixed Air Operation The mixed air damper will respond based on the demand by the space sensor. If the temperature within the zone is at the assigned LOOP setpoint, the damper will be positioned at 50%. If the zone temperature increases, the damper will open increasing the amount of outdoor air mixture with the return air attempting to add cooling to the zone. If the temperature continue to increase and the damper opens to maximum (100% outdoor air) and cooling of the zone can not be achieved, mechanical cooling will be activated. If the zone temperature decreases, the damper will close decreasing the amount of outdoor air mixture with the return air attempting to decrease the cooling to the zone. If the temperature continues to decrease and the damper closes to its minimum position setting (10% outdoor air) and heating of the zone can not be achieved, mechanical heating will be activated. Cooling Operation On a call for cooling (after the mixed air damper is fully open) the first stage of mechanical cooling will be activated. When the Tutorial Copyright 2006 TAC. All Rights Reserved. 19

32 Tutorial Monitoring Active Values using the TREND Function mechanical cooling is activated, the mixed air damper will be positioned at its minimum outdoor air position. If the zone temperature continues to increase, the cooling will be staged on until all four stages have been activated. Heating Operation On a call for heating (after the mixed air damper has been closed to its minimum ventilating position), the heating valve will be proportionally opened. If the zone temperature continues to decrease, the heating valve will be opened until it is fully open, then the outdoor air damper will be closed from its minimum ventilating position. The trend function provides an effective method of graphically monitoring a number of values both in relation to one another and over a period of time. Trends can be used to monitor inputs, intermediate operations, and outputs (any block output value). Both analog and digital values can be trended. The trend is an effective tool used to assist in the performance monitoring of controlled points. There are a number of values that can be monitored in the AHU_2 application using the trend function. First we will monitor the temperature generator signal. Select TREND from the function menu. The trend setup screen will be displayed. Modify the trend parameters and input to represent the following: One input, with a 5 second sample frequency. The signal will be ramping between 50 and 90 F, so the MIN will equal 50.0 and the MAX will equal The input attribute (IN1) for the trend will be the output of the universal input block (UI:3:OUT) named ZONE T. Note: Modified TREND SETUP screens If this tutorial is to be preformed with a TAC MICROZONE II controller where the inputs and the outputs have not been wired it will be necessary to point the input to UTIL:25:OUT1. When the trend has been setup properly, press <Alt> M to monitor the values and save the setup. 20 Copyright 2006 TAC. All Rights Reserved. F

33 Tutorial The trend monitoring screen will appear and after 5 seconds the first plot will be drawn on the screen. If the plot is a straight line across the mid section of the screen, the fan start/stop switch is OFF and should be switched ON. The trend will continue to plot samples until it reaches the right extreme of the screen. Each time a new sample is plotted the data will be shifted to the left one segment. With the 5 second per sample frequency assigned, the screen will show a running trend for the last 1 minute and 45 seconds for the Portfolio and the last 2 minutes and 10 seconds for the PC MZ2: UI:3:OUT (ZONE T ) The PC screen also provides a scaled vertical axis with the bottom limit being the MIN setting and the top limit being the MAX setting. Press <ESC> to switch back to the trend setup screen. Next we will take a look at the control outputs of the AHU_2 application as the temperature ramps across its control range. Modify the trend setup to be: Two inputs, with a 2 second sample frequency. The output signals will be controlling between 0 and 100%, so the MIN will equal 0.0 and the MAX will equal The input (IN1) for the trend will be the output going to the mixed air damper (AO:1:OUT) and input (IN2) will be the output for the heat valve (AO:2:OUT). Tutorial Copyright 2006 TAC. All Rights Reserved. 21

34 Tutorial A plot similar to the one shown below will be generated at the time when the temperature at the input is increasing. (MAX ) (MIN ) MZ2:1 AO:1:OUT AO:2:OUT 2 Seconds between samples (FREQ) Temperature Increasing The solid line is the output for driving the mixed air damper actuator. The dashed line is the output signal for driving the hot water valve actuator. When the temperature is below 58 F (12 F below the setpoint of 70 F), the outdoor air damper is closed (0%) and heating valve is full open (100%). As the temperature increases, the damper opens to its minimum position (10%). As the temperature continues to increase, the heating valve proportionally closes (from 100 to 0%). As the temperature approaches setpoint, the mixed air damper continues to open. As the temperature passes above the setpoint and continues to increase, the mixed air damper is opened to its maximum (100%). When the first stage of mechanical cooling is energized, the mixed air damper signal is returned to its minimum position. The cooling will continue to stage on until all four stages have been energized. The cooling stages can be monitored by the LEDs located on the controller output termination board. Relay 1 (DO:1) is the first stage of mechanical cooling, relay 2 (DO:2) is the second, relay 3 (DO:3) is the third and relay 4 (DO:4) is the fourth stage of cooling. As the temperature signal ramps down, the sequence is reversed. Compare test results with the cooling operation shown in the block section under LOOP ASHRAE Cycle 2 with cooling. 22 Copyright 2006 TAC. All Rights Reserved. F

35 Tutorial When running on a PC, the trend function allows for four variables to be plotted simultaneously. In this example, the zone temperature, the mixed air output, the heating value output, and the analog cooling signal were plotted on the same trend screen MZ2: AO:1:OUT (MIX AIR ) AO:2:OUT (HT VALVE ) UI:3:OUT (ZONE T ) LOOP:1:AV (Ht/Cl ) 2 Seconds between samples (FREQ) Temperature Increasing Note: The plot lines on the PC will be a combination of solid and dashed lines on monochrome PCs and different colors on PCs with a color monitor. The key for the plot lines is located at the bottom of the screen. The cooling stages (digital values) can be setup as a trend. Here the first two stages of cooling (DO:1 and DO:2) have been assigned to a trend. Digital values can be displayed with analog values. Therefore, the MIN and MAX values assigned should be selected to cover the analog signal. If the trend is to monitor digital values only, it is important to remember that the MAX value still must have a number assigned to it that is at least one (1.0) greater then the MIN value for the trend to work. ON OFF MZ2:1 DO:1:OUT DO:2:OUT 3 Seconds between samples (FREQ) Temperature Increasing Temperature Decreasing Tutorial Copyright 2006 TAC. All Rights Reserved. 23

36 Tutorial In the next example, a PC is used to show that the four stages of mechanical cooling can be plotted on one trend screen. Note: Based on the number of digital values being trended, the screen will be divided up equally with the first digital value displayed on top of any others. The scale on the left is reserved for use with analog values. Things to try on your own: Overrides With the fan start/stop switch OFF, use the OVERRIDE function to turn on the air handler for a specified time of 15 minutes and monitor the operation for proper shut down. Edit Use the EDIT function and modify the setpoint of the control loop for 75 F. MONITOR (<Alt> M ) the operation in respect to the new control point. Modify the cooling output for use with a chilled water valve. Practice using the FOLLOW POINTERS function to checkout the application setup. Also, use the MONITOR feature <Alt> M to monitor pointer and output real time values. Use CURRENT STATUS and TRENDS to verify the proper operation of the application. Apply and test other LOOP configurations. Try adding some interstage delay at the SEQ block. (The signal generator is fairly fast so you can not add long delay times or you may have to manually force the input values to test the application.) Review the HISTORY DATA of the physical points. Set up and review the point history on the active inputs. 24 Copyright 2006 TAC. All Rights Reserved. F