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Using the VMA1200 Balancing Tool (VBT) Software LONWORKS Systems Manual 1162 VMA1200 Section Issue Date 0401 TECHNICAL BULLETIN Using the VMA1200 Balancing Tool (VBT) Software Using the VMA1200 Balancing Tool (VBT) Software ....................... *3 Introduction........................................................................................................*3 Key Concepts...................................................................................................... 4 Product Overview .......................................................................................................... *4 Navigation and Action Buttons....................................................................................... *4 Units Selection ................................................................................................................6 Parameters Screen .........................................................................................................7 VMA Data Page...............................................................................................................8 Temperature Setpoints Page......................................................................................... *9 Flow Setpoints Page.................................................................................................... *10 Box Parameters Page ................................................................................................. *11 Overrides Page ........................................................................................................... *12 Misc Setpoints............................................................................................................. *13 Balance Screen.............................................................................................................14 Real Time Flow ........................................................................................................... *16 Two Gain Factors ..........................................................................................................17 Procedure Overview........................................................................................*19 Detailed Procedures........................................................................................*20 Installing the VBT Software on a Palm Compatible Handheld Device.......................... *20 Connecting Using CablePRO ...................................................................................... *23 Connecting Using CVTPRO ........................................................................................ *25 Starting the VBT ............................................................................................................26 Stepping Through a Balancing Application .................................................................. *26 Troubleshooting ............................................................................................... 32 *Indicates those sections where changes have occurred since the last printing. © 2001 Johnson Controls, Inc. www.johnsoncontrols.com Part No. 24-9599-1, Rev. — Code No. LIT-1162400 2 VMA1200 Using the VMA1200 Balancing Tool (VBT) Software 3 Using the VMA1200 Balancing Tool (VBT) Software Introduction The Variable Air Volume Modular Assembly (VMA) Balancing Tool (VBT) software is a program that helps you balance Variable Air Volume (VAV) systems with Johnson Controls VMA1200 Series controllers. The software runs on Palm compatible handheld devices (Version 2.0 or higher operating system). In addition to automatically calculating correction factors, the Balancing Tool software is capable of commanding the VMA to desired flow setpoints, overriding some of the outputs for up to 30 minutes after the tool is disconnected, and correcting other configuration properties stored in the VMA. IMPORTANT: If Configuration Properties (CPs) are changed using VBT software, they are saved only in the controller. M-Pro software (used to create VMA1200 controller applications) does not support a method to upload changes made using VBT software. If a controller is replaced and the application is re-downloaded from M-Pro software, changes to the CPs are lost. This document describes how to: • install VBT software on a Palm compatible handheld device • connect using CablePRO • connect using CVTPRO • start the VBT • step through a balancing application 4 VMA1200 Key Concepts Product Overview The VMA Balancing Tool software provides a semi-automated method to balance VAV boxes controlled by VMA1200 Series controllers. The software runs on a Palm compatible handheld device, such as the Palm handheld unit or IBM Workpad. These devices allow data entry by touching the screen with a finger or stylus, or by writing numbers and letters on the device’s pad. Familiarize yourself with the use of a Palm compatible handheld device before you continue with this document. The Palm compatible handheld device connects to a room sensor through a CablePRO (AS-CBLPRO-2) or CVTPRO (AS-CVTPROx00-0) converter. See the Auxiliary Gear Technical Bulletin (LIT-6363080) for more information on these products. The Parameters screen and the Balance screen make up the two main sections of the software. In general, the various Parameters screens provide you with field data from the VMA. Setpoints are adjusted from these screens. The Balance screens provide you with a menu of tools to balance and calibrate the VMA load. Navigation and Action Buttons This section describes the Navigation and Action buttons. Figure 1 shows an example screen with VBT Navigation and Action buttons. Table 1 lists the buttons and descriptions. Notes: If the field is underlined, it is a writeable field. If no underline exists, the field is read-only. If the field contains a string of asterisks, the controller is not configured for this parameter and the field cannot be written. The handheld unit does not continuously communicate with the VMA. Instead, the information is updated each time the user synchronizes the VBT with the VMA. Using the VMA1200 Balancing Tool (VBT) Software 5 Screen Title Tabs FlowSetpoints Balance 100 63.57 700 300 200 FanMinFlw: 120 Synchronizes data with VMA. Nmnl Stp: 400 Stndby: 300 Exits the tool and calls the Application menu. The up and down arrows have the C A Activates P S A R same function as P N L O pull-down LICATIO CULAT the Up and Down menu. a buttons on the b 3 c 2 1 MENU FIND case, which is to Trace numbers move you to the on the keypad next or previous to enter them. screen. Touch either the letters or numbers to bring up their respective keyboard. Vbt1.cdr Figure 1: Navigation and Action Elements Table 1: Navigation Features and Action Buttons Feature/Button Description Applications Opens the Application menu. Use this to switch from the VBT application to another application. Menu Displays a pull down menu for navigation to another Parameters page. Touchpad Trace numbers on the keypad to enter them. Touch letters or numbers to bring up keyboards. Up Arrow Changes the screen to the previous Parameters page. As shown in Figure 1, the Up button functions the same as the up arrow on the VBT screen. Note: Any changes made to this page are lost if the up arrow or down arrow is selected without first selecting the Send Changes button. Down Arrow Changes the screen to the next Parameters page. As shown in Figure 1, the Down button functions the same as the down arrow on the VBT screen. Note: Any changes made to this page are lost if the up arrow or down arrow is selected without first selecting the Send Changes button. VMA Sync (Synchronization Icon) Causes the VBT to communicate with the VMA and update the displayed data. Note: Any changes made to a page are lost if the VMA Sync is selected without first selecting the Send Changes button. Send Changes Sends any parameter changes to the VMA. If you do not make any changes to a field, then touching the Send Changes button does nothing and does not process the request. Screen Title Tabs Toggles the display between the Parameters and Balance screens. 6 VMA1200 Units Selection The VBT software uses either SI (°C; liters/second; Pa) or English (IP [°F; cfm; inches W.C.]) units. Select the desired units in the Welcome screen that appears when the VBT software starts (Figure 2). Alternately, use the Overrides page to override the currently selected units. See Overrides Page in this section. Welcome Johnson Controls VMA 1200 Balancer Tool Version 1.0 Copyright 2000 Johnson Controls Inc. All rights reserved. Cancel Sync Units: SI English welcome Figure 2: Welcome Screen with English (IP) Units Selected Using the VMA1200 Balancing Tool (VBT) Software 7 Parameters Screen Once the VMA communicates with the Balancing Tool software, the first page of the Parameters screens appears. Figure 3 shows a VMA Data page. VMA Data Balance Neuron ID: FF FF FF FF FF FF Location Str: ****** Occupancy: Standby View Actual Setpt Room Temp [F] 72.2 72.0 Air Flow [CFM] 800.0 810.0 Send Service Pin VMAdata Figure 3: VMA Data Page Table 2 lists the available Parameter Data screens and describes their content. Table 2: Parameter Data Screens Page Description VMA Data Views current VMA status and allows Location String to be updated. Temperature Views and changes heating and cooling temperature Setpoints setpoints. Flow Setpoints Views and changes heating and cooling air flow setpoints. Box Parameters Views and changes VAV air balancing parameters. Overrides Temporarily overrides VMA outputs. Miscellaneous Allows values for carbon dioxide
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