BACnet VAV Applications For BAC-7000 Series VAV Controllers
Application Guide Contents General Information (All Output Configurations)................................................................... 3 Overview and Installation...............................................................................................................................................4 Support...........................................................................................................................................................................4 Important Notices...........................................................................................................................................................4 Introduction....................................................................................................................................................................5 Wiring Considerations.....................................................................................................................................................6 Inputs and Outputs.........................................................................................................................................................6 Connecting Standard Inputs........................................................................................................................................6 4–20 mA Current Input...............................................................................................................................................7 Principles of Operation...................................................................................................................................................7 Sequence of Operation...................................................................................................................................................8 Objects...........................................................................................................................................................................9 Input Objects (AIs/BIs)................................................................................................................................................9 Binary Variable Objects (BVs)...................................................................................................................................10 Output Objects (AOs/BOs).......................................................................................................................................10 Analog Variable Objects (AVs)...................................................................................................................................11 Program Objects.......................................................................................................................................................12 Balancing Procedure (Pressure Independent only)........................................................................................................12 Control Basic Program Source Code.............................................................................................................................14
BAC-70X1 Series (BACnet AAC for VAV)............................................................................... 19 Sample Applications (BAC-70X1)..................................................................................................................................20 VAV—Pressure Independent.....................................................................................................................................20 VAV—Pressure Independent with Fan.......................................................................................................................22 VAV—Pressure Dependent........................................................................................................................................24
BAC-70X3 Series (BACnet AAC for VAV FIU)........................................................................ 27 Sample Applications (BAC-70X3)..................................................................................................................................28 VAV—Pressure Independent.....................................................................................................................................28 VAV—Pressure Independent with Fan.......................................................................................................................30 VAV—Pressure Dependent........................................................................................................................................32
Index..................................................................................................................................... 34 BAC-70XX General
Specifications, design, and operation1 are subject to change without notice.
Application Guide, AN0311A Rev A
BAC-70XX General
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Application Guide, AN0311A Rev A
General Information (All Output Configurations) This document gives wiring details, schematics of sample applications (including bills of material with KMC Controls products), and other related information for the BAC-7000 series B ACnet-based VAV Controller. This document is divided into: • This general information section • A section specific to the BAC-70X1 series (BACnet AAC for VAV) • A section specific to the BAC-70X3 series (BACnet AAC for VAV FIU) Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
Available Models
BAC-70XX General
Description
BAC-7001
BACnet AAC for VAV, 18°/minute at 60 Hz
BAC-7051
BACnet AAC for VAV, 60°/minute at 60 Hz
BAC-7003
BACnet AAC for VAV FIU, 18°/minute at 60 Hz
BAC-7053
BACnet AAC for VAV FIU, 60°/minute at 60 Hz
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Application Guide, AN0311A Rev A
Overview and Installation
Important Notices
This document gives wiring details, schematics of sample applications (including bills of material with KMC Controls products), and other related information.
The KMC logo and NetSensor are registered trademarks and TotalControl and BACstage are trademarks of KMC Controls, Inc. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the written permission of KMC Controls, Inc.
For general mounting and connection details, including network wiring, EOL termination, power connections, input/output connections, pull-up resistor switch settings, see the relevant Installation and Operation Guide.
The material in this document is for information purposes only. The contents and the product it describes are subject to change without notice. KMC Controls, Inc. makes no representations or warranties with respect to this document. In no event shall KMC Controls, Inc. be liable for any damages, direct or incidental, arising out of or related to the use of this document.
Support Controllers come with a printed Installation Guide. The latest support files are always available on the Partners web site:
NOTE: Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
https://partners.kmccontrols.com For additional instructions on programming, see the Help system for BACstage or TotalControl.
NOTE: Customized programs are the responsibility of the user. KMC Controls does not provide support for such programs.
BAC-70XX General
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Application Guide, AN0311A Rev A
• The controller can be remotely set to standby via a BACnet Building Management System (BMS) and will control to widened heating and cooling setpoints. While in the unoccupied mode, fan terminals and reheat will cycle appropriately to provide local reheat to an individual zone to maintain setback temperature setpoints. Schedule control and time synchronization is maintained by the supervisory BMS system provided by KMC or others.
Introduction KMC Controls manufactures a variety of BACnet self-contained yet networkable VAV controllers that have been certified by BACnet International as Advance Application Controllers (AAC) meeting the stringent conformance requirements for integration in the BACnet community. The BAC-70XX controllers also meet these rigid certifications. They are commonly used as VAV applications. The B AC-7000-01 VAV application describes the factory installed application programming for the KMC BAC-70X1 and BAC-70X3 families of VAV controllers. The embedded standard applications provide for the selection and control of a wide range of standard single duct VAV terminal applications for both pressure independent and pressure dependent (bypass) terminal unit applications. The following single duct VAV terminal applications are supported:
• The controller automatically detects a choice of input sensors, spanning from a simple, low cost thermistor sensor to KMC’s advanced LCD NetSensor. Discrete (passive) STE-6000 series sensors, K MD-11XX NetSensors, and KMD-12XX sensors are supported as standard. • An internal, easy-to-use air balancing program that allows an independent air balance contractor to completely test and balance the air flow through each terminal for minimum and maximum cooling air flow and auxiliary reheat minimum air flow. The embedded air flow balancing program enables a user to closely match the actual measured airflows to the specified design criteria. This matching capability is especially important in today’s modern LEED certified buildings to maximize energy savings and comfort.
Pressure Independent • Cooling only • Single duct with proportional reheat (SCR or modulating hydronic applications) • Single duct with 1 or 2 stages of reheat • Series fan powered with proportional reheat (SCR or modulating hydronic applications) • Series fan powered with 1 stage of reheat
Standard Options
Pressure Dependent (or Bypass VAV)
With minimal effort or external hardware options, the embedded programs can provide additional features and functions including:
• Cooling only • Single duct with proportional reheat (SCR or modulating hydronic applications)
• Three-stage reheat operation (requires REE-5001 staging relay)
The embedded applications also contain a number of energy saving and convenience features including:
• Time proportioned reheat control for older wax valve type reheat systems is provided and available for direct replacement of KMC controllers used in such applications. (Requires enabling of legacy reheat program code via technician tool.)
• Automatic heating/cooling changeover with independent heating and cooling space temperature setpoints. • Automatic standby operation when used with the KMD-12X1 series NetSensor with integral occupancy sensor. If an occupancy sensor device is connected, when an occupied space is temporarily vacated for a period of time, the controlling setpoints are modified to a slightly wider zero energy deadband, resulting in a reduction of heating and cooling energy. When the space is reoccupied, normal operation resumes. BAC-70XX General
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Application Guide, AN0311A Rev A
Wiring Considerations
Inputs and Outputs
Because of the many connections (power, network, inputs, outputs, and their respective grounds or switched commons), be sure wiring is well planned before installation of conduit!
Connecting Standard Inputs Supported input devices include: • Active 0–12 VDC devices • Passive contacts • 10K ohm thermistors
CAUTION To avoid damage from ground loops and other communication issues, correct phasing on network and power connections on ALL the networked controllers is critically important.
Unsupported input devices include: • 1K ohm RTDs • Directly connected 4–20 mA devices—but they can be connected as voltage inputs across an external resistor (see below for information)
• To prevent excessive voltage drop, use a conductor size that is adequate for the wiring length! Allow plenty of “cushion” to allow for transient peaks during startup.
Passive input devices require setting the pull-up resistor switches to On. For active voltage devices set the pull-up resistor switches to Off. (See Pull-Up Resistor and EOL Switch Positions on page 7.)
• Make sure that conduit for all wiring has adequate diameter for all necessary wiring. Using 1-inch conduit and junction boxes is recommended!
Be sure pull-up resistor switches are set correctly.
• Using multiple conductor wires for all inputs and outputs is recommended. Grounds for all the inputs can be combined on one wire.
Isolation lamps
MS/TP network
RJ-12 connector for NetSensor Input pullup resistors
Input
EIA-485 end-ofline termination
Output
Restart button
Power Power jumper
Terminal Blocks and (General) Connections
(Actual connections may vary—see the Installation and Operation Guide for your selected Controller.)
BAC-70XX General
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Application Guide, AN0311A Rev A
Principles of Operation
Connected
The embedded application code automatically selects the proper sequence by reading the value of input #3 (IN3) on the controller. Four input options are supported: open, 10K ohm thermistor, 1K ohm fixed resistor, and short/jumper. If the input is open (nothing connected across the input) or a 10K ohm thermistor is connected, the controller is defined to operate as a pressure independent VAV controller with proportional and/or 2 stages of reheat. If a 10K ohm thermistor is connected, the controller will reflect the thermistor (Supply Air Temperature application). If the input is short-circuited with a wire jumper, the controller is defined to operate as a pressure independent VAV controller with proportional and/or 1-stage of reheat. A second output is defined to operate as an intermittent fan that will be energized during a call for heating.
Disconnected Network Switch
Pull-up resistors EOL switches
Off
On
Pull-Up Resistor and EOL Switch Positions
Pressure Dependent or Bypass VAV terminals may be automatically selected by placing a 1K ohm resistor across input #3. When this mode of operation is selected, the integral flow sensor input measurement algorithm is disgregarded and the controller operates as a simple pressure dependent controller. Instead of minimum and maximum air flow control settings, the controller uses minimum and maximum damper position settings to regulate expected approximate airflows. These adjustable settings provide adequate adjustability for the control of space temperature within the space.
NOTE: ALL the input pull-up resistor switches must be fully latched in the correct positions. See the Connections and Wiring section of the relevant B AC-7000 Series Installation and Operation Guide.
4–20 mA Current Input To use a 4–20 mA current input:
The use of a KMD-12X1 NetSensor with integral occupancy sensor will provide an additional standby during occupancy. If the space is temporarily vacated for more than 30 minutes, the occupied setpoints will be adjusted to a wider deadband to reduce energy consumption while the local space is unoccupied.
1. Connect an external 250 ohm resistor from input to ground. The resistor converts the 4–20 mA current input to a 1–5 VDC voltage that can be read by the thermostat’s analog-to-digital converter. 2. Set the corresponding pull-up switches to Off.
The general control operations are shown in the following figures. In Illustration 1, a single duct VAV with proportional reheat control is shown. In Illustration 2, a similar figure is shown, however the heating output is depicted with 2 stages of reheat. In Illustration 3, the control of the fan is shown using a KMD-1261 NetSensor to provide standby control. In Illustration 4, the control of the space setpoints is shown using a KMD-1261 NetSensor.
3. Using BACstage or TotalControl, configure the input device type for a 4–20 mA source.
Inputs 4–20 mA DC
(–) (+)
250 ohms
NOTE: Custom programming is required
IN4 IN3 GND IN2
External 250 Ohm Resistor for 4–20 mA Current Inputs
BAC-70XX General
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Application Guide, AN0311A Rev A
Sequence of Operation The BAC-70X1 Outputs 1, 2, and 3 are universal outputs. AO1 is a universal output that comes configured as an analog output for modulating heat, but can be reconfigured as a binary output (BO1) that can used to power a 12 VDC relay for switching a load; BO2 and B03 are configured as digital, but could be reconfigured as analog (AO2 and AO3) if an analog signal is desired and custom programming added.
Illustration 1—Single Duct VAV with Proportional Reheat
The BAC-70X3 has one output that can be reconfigured AO1. Output 3 (BO3) is a normally open relay contact. Output 2 (BO2) is a triac for switching a 24 VAC up to a 1 amp load. AO1 is a universal output that comes configured as an analog output for modulating heat but can be reconfigured as a binary output that can used to power a 12 VDC relay for switching a load. Many of the variables in the controller are calculated automatically, but this document uses BACstage to provide a description of the B AC-70XX VAV controller’s configuration and variables that might require some special attention for initial implementation.
Illustration 2—Single Duct VAV with 2 Stages Reheat
If a KMD-1261/1281 NetSensor with motion is attached to the controller, it will enter a Standby Mode if motion is not sensed in the room for a duration of 30 minutes. The Standby Mode offsets the room temperature by a few degrees in a room that is in unoccupied mode. The controller first determines if a NetSensor is connected. If none is connected, AI1 and AI2 will be referred to for room temperature and setpoint. Illustration 3—Fan Operation with KMD-1261 NetSensor
There are three sequences for temperature control: Pressure Independent, Pressure Independent with Fan, and Pressure Dependent.
Pressure Independent Program 1 (AV10 = 1) sequence automatically modulates flow into the conditioned space between Minimum and Maximum setpoints as defined by the user. This sequence allows for Heating, Cooling, or changeover applications with minimal user initialization. With the provided balancing program, initially these devices will default to a standard Single Duct Cooling VAV configuration.
Illustration 4—Space Setpoints wth KMD-1261
BAC-70XX General
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Application Guide, AN0311A Rev A
You can use either of the Reheat functions by using AO1 for an analog device or BO2 and/or BO3 as single or two stage Reheat.
Objects Input Objects (AIs/BIs) Input 1 (AI1) – The Controller will use this for room temperature if there is no NetSensor present. A 10K thermistor may be used to measure room temperature. Typically a STE-6019 or similar STE-6000 series room temperature sensor would be used.
Pressure Independent with Fan This Sequence (AV10 = 3) works the same as above except: • the fan (BO3) runs anytime the reheat is energized (AO1 > 10 or BO2 is active),
Input 2 (AI2) – The Controller will use this input for setpoint if there is no NetSensor present. A potentiometer may be used to set the room temperature setpoint. Typically a STE-6019 or similarly S TE-6000 series room temperature sensor would be used.
• and the sequence incorporates only 1 stage (BO2) of reheat.
Pressure Dependent
Input 3 (AI3) – The Controller will map this input to AV10.
Program 2 (AV10 = 2) sequence automatically modulates the damper angle to control the room temperature. This sequence allows for heating or cooling using changeover mode to determine if there is heating or cooling available.
1. With nothing placed on AI3, the controller will control for a Pressure Independent VAV box. 2. Placing a 1K to 100K resistor or a 10K thermistor across AI3 and ground will cause the controller to control as a Pressure Dependent VAV box.
After a power cycle, the damper will find its position before it will start to control. It will also do this when mode is changed from cooling to heat. The time required to find position is 3 minutes.
3. A jumper wire across AI3 to ground will control the VAV box for a Pressure Independent with Fan using BO3. The fan energizes only on a call for heat.
You can use either of the Reheat functions by using AO1 for an analog device or BO2 and/or BO3 as single or two stage Reheat. Reheat will not operate unless the controller has calculated the damper position to be at least greater than AV9. AV9 can be adjusted to the desired damper position during reheat. This makes it important that AV31 has the correct drive time of the actuator (both in the Present Value and the Relinquish Default).
NOTE: When a 10K thermistor is used on AI3 and option 1 or 3 is required, then AV10 can be set in software by manually changing the present value to: 1 = Pressure Independent VAV box. 2 = Pressure Dependent VAV box. 3 = Pressure Independent with Fan VAV box.
Basic configuration objects that require immediate confirmation or change may include the objects discussed below.
BAC-70XX General
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Application Guide, AN0311A Rev A
Binary Variable Objects (BVs)
Output Objects (AOs/BOs)
BV5 (REHEAT) enables the reheat function of the controller. Enable this function if reheat is to be used by setting the Relinquish Default (found in the “more” properties of the object) to Active. This function is enabled by default. To disable, set to Disabled and Inactive.
Up to two stages of reheat can be initiated by this controller using outputs 2 and 3. The sequence of operations controls the outputs in the same fashion regardless of the physical outputs available on the controller. The B AC-70X1 has three universal outputs that come configured as analog outputs. They can be reconfigured as a binary outputs to switch 12 VDC relay for loads.
BV4 (CW-CLOSE) determines the drive direction of the actuator. If the actuator drives clockwise to close, set Relinquish Default to Yes. If not, set it to No.
The BAC-70X3 has one universal output, one triac output, and one normally open relay. The function of each output is described below (default configuration). Output 1 (AO1) – Modulated Heating: A modulated heating signal is provided by output 1. No additional configuration is required. This output is active by default, but may be disabled with BV5. Output 2 (BO2) – Heating Stage 1: Output 2 is the first stage of binary heat regardless of the control sequence that is active. This output is active by default, but may be disabled with BV5. Output 3 (BO3) – Heating Stage 2/Fan: The function of output 3 is based on the control sequence that is active. If Non-Fan-Powered Pressure Independent VAV or Pressure Independent VAV is selected, output 3 is a second stage of binary reheat. If FanPowered Pressure Independent VAV is active, output 3 provides a fan start/stop signal. This output is active by default, but the heating function may be disabled with BV5. If a proportional 0–10 VDC output is required to modulate a reheat valve, output AO1 would be used. No configuration changes are required. This heating output is also enabled/disabled with BV5. This variable is enabled by default.
BAC-70XX General
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Application Guide, AN0311A Rev A
If an increased airflow is required when the space temperature falls below the setpoint, a value for the required velocity is set in AUX-FLOW (AV28). If CFM is known but FPM is not, divide the desired airflow rate in CFM by the value of the VOLFACTR (VAR22) and enter that value.
Analog Variable Objects (AVs) Some values in the AVs require your attention to confirm or to change before balancing. 1. The description of each AV that does NOT require change by you is designated with “(auto)” in the Description. These values are calculated within the program and are available for diagnostic or graphic display purposes only.
1. “Actual Flow at Min” (AV36) and “Actual Flow at Max (AV37)” are variables used during the balancing procedure of the VAV box discussed later in this document.
2. AV10 – Sequence Control: AV10 selects which control sequence is active: Non-Fan-Powered Pressure Independent (1), Pressure Independent (2), or Fan-Powered Pressure Independent (3). Normally AV10 is controlled by internal programming and input 3. If custom features beyond the factory programming are required, or the user requires the control sequence to be “locked,” AV10 may be taken Out of Service and the desired value set in the Relinquish Default and at a priority greater than nine.
2. When reheats are used, Aux Flow (AV28) is used to set the airflow setpoint when the VAV box moves into the heating mode. It can be higher than the Minimum SP. 3. AV31 – Actuator Drive Time: AV31 is used to calculate the damper position for pressure dependent applications.
3. Minimum Flow Setpoint (AV20) is set in CFM and is used to control the minimum airflow of the box. This is automatically set as the Relinquish Default value after 5 minutes of non-use by the user. 4. Maximum Flow Setpoint (AV21) is set in CFM and is used to control the maximum airflow of the box when maximum air volume is required. This will also be set as the Relinquish Default. 5. Volume Factor VOLFACTR (AV22) needs to be entered. For rectangle or square ducting, multiply the height by the width. Below is a list of the most common round sizes of duct and their area. Volume Conversion Correction Factors Duct Diameter in Inches
Volume Factor
6 7 8 9 10 12 14 16
0.1964 0.2673 0.3491 0.4418 0.5454 0.7854 1.0690 1.3963
BAC-70XX General
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Application Guide, AN0311A Rev A
Balancing Procedure (Pressure Independent only)
Program Objects Program Objects are set to run automatically on startup or upon power failure and do so if the appropriate Auto Run box is checked to enable this feature. These programs can be stopped, unloaded, started, etc. from this page.
The balancing procedure for this program requires the use of a NetSensor (KMD-1161) as the Balancing Tool (DO NOT use K MD-1181/1281). The image of a NetSensor below illustrates the N etSensor’s configuration button assignment. These buttons can be used to set Minimum and Maximum airflow values as well to as calibrate the airflow sensor’s readings.
Program 1, 2, 3, and 4 are started automatically by default (Auto Run is checked). If reheats are not used, Program 3 should be unchecked for Auto Run or BV5 can be set to disable with its Relinquish Default property set to Inactive. AO1, BO2, and/or BO3 run concurrently for staged or modulating heat, so either can be used from the correct terminals.
See Control Basic Program Source Code on page 14 for listings of the program code.
The procedure for balancing the VAV airflow sensor compensation has been simplified in this version. Simply set the controller to the Balancer Override mode. This allows the box to drive easily between Maximum and Minimum settings. At both ends, simply measure the actual airflow and enter the values through the NetSensor to calibrate the airflow sensor. Once the Balancer Override is initiated, actual measured airflow readings at MIN and MAX are required by the program (Button 4 and 6). The actual flow reading variables track the respective min/max flow values until the Balancer Override is enabled the first time. This means that Button 4 and 6 of the NetSensor (AV4 and AV6) will require attention for an accurate automatic calculation of the sensor correction value. This feature automatically calculates a value to AV23@9 to increase the quality of the airflow sensor accuracy. If this feature is not required and the Balancer Override is initiated, a manual setting for AV23@8 must be entered or the Actual Airflow values must be changed to match the Min/Max Setpoints to assure proper airflow measurement. During the Normal Mode, Buttons 4–6 are disabled but will display the values of those variables. BAC-70XX General
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Application Guide, AN0311A Rev A
The procedure for Balancing and Calibration is as follows:
6. Recheck Values and Readjust if necessary: Recheck the values again by repeating steps 4 and 5 until no further adjustment is needed. Should more than a normal error occur, minor readjustments may be necessary. If the actual value is lower than it should be, take the error (difference) and add/subtract to the current value in B6 or B4 by the amount of the error of the reading to the value in the button. These adjusted values (B4, B5, B6, B7) will be set as default values (written to the Relinquish Default property) in the controller after five (5) minutes of nonuse of the NetSensor. The entered values are sent to flash memory and will return again as default values in the event of a power failure or loss of power.
1. Set the N etSensor to Balancer Override (B5 and B7): With the NetSensor plugged into the Controller, press buttons 5 and 7 at the same time to set the VAV box into the Balancer Override mode. The box will remain in this state for 30 minutes or until you press 5 and 7 simultaneously again to turn this mode off. Once in this mode, Button 2 will display ‘1’ or ‘0.’ By using the Up/Down arrows, you can change the box from Minimum to Maximum airflow. If you don’t press anything, the NetSensor returns to its normal display of Space Temperature in approximately 10 seconds. Holding the NetSensor in your hand will cause this value to read higher than the actual space temperature. 2. Set Minimum airflow setpoint (B5). Press button 5 (B5) for the Minimum airflow setting. Adjust the value in the display using the Up/Down arrows to the show the required Minimum airflow setpoint. 3. Set Maximum airflow setpoint (B7). Press button 7 (B7) for the Maximum airflow setting. Adjust the value in the display using the Up/Down arrows to the show the required Maximum airflow setpoint. 4. Set Actual Airflow at Maximum Flow (B6): Monitor the sensed airflow by pressing button 3 (marked OAT). Wait until the sensed airflow volume settles down and remains constant for about 30 seconds or so. Once the airflow displayed on button 3 is stable, measure the actual CFM airflow using a good instrument like a flow hood to measure the TOTAL airflow leaving the box. Now, adjust the ActualFlow@Max (AV37) by pressing button 6 and using the Up/Down arrows adjust the display to the actual measured airflow from the instrument. 5. Set Actual Airflow at Minimum Flow (B4): Monitor the sensed airflow by pressing button 3 (marked OAT). Wait until the sensed airflow volume settles down and remains constant for about 30 seconds or so. Once the airflow displayed on button 3 is stable, measure the actual CFM airflow leaving the box again. Now, adjust the ActualFlow@Min (AV36) by pressing button 4 and using the Up/Down arrows adjust the display to the actual measured airflow from the instrument.
BAC-70XX General
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Application Guide, AN0311A Rev A
Control Basic Program Source Code 190 IF AV2 = 1 THEN AV25 = AV21 / AV22 ELSE AV25 = AV20 / AV22 : REM Bal Flow Settings
The following sections provide the source code for the controller’s internal programs being executed. Program objects are configured to run automatically.
200 GOTO 380
NOTE: Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
210 REM Check For No Motion
220 IF AV8 = -2 THEN START O
230 IF AV8 > -2 THEN STOP O , STOP BV1
240 IF TIMEON( O ) > 0:30:00 THEN START BV1
Program One – Single Duct Pressure Independent
250 REM Temp SPs If no NetSensor use AI1 & AI2 (Not for STE-6012/16)
10 REM *** CHECK AI1 FOR VAV BOX TYPE ***
260 BV9 = NETSENSORSTATUS 270 IF BV9 THEN GOTO 310
20 IF MODELNUMBER = 32 OR MODELNUMBER = 34 THEN AV31 = 3z00 ELSE AV31 = 90
280 IF NOT BV9 THEN RLQ AV8@8
290 IF AI1 < 0 THEN RLQ AV1@8 , RLQ AV2@8 , GOTO 310 ELSE AV1@8 = AI1 : REM Use Sensor if present
30 IF AI3 < -40 THEN AV10 = 1 : REM Pressure Independent VAV box
40 IF AI3 > -45 AND AI3 < 205 THEN AV10 = 2 : REM Pressure Dependent VAV box.
300 IF AI2 > 89 THEN GOTO 310 ELSE AV2@8 = AI2 : REM Use Setpoint if present
50 IF AI3 > 210 THEN AV10 = 3 : REM Pressure Independent with a fan
310 IF BV3 THEN AV26 = AV29 ELSE AV26 = AV30
60 REM *** CHECK AV10 FOR PRESSURE DEPENDENT CONTROL ***
320 IF BV3 THEN A = 1 - AV16 / 100 ELSE A = AV16 / 100
70 IF AV10 = 1 OR AV10 = 3 THEN GOTO 90 80 END
330 AV2@8 = MIN( MAX( AV2 , AV11 ) , AV12 ) : REM Apply SP limits
90 REM BALANCER OVRD
340 IF BV1 = 0 THEN AV29 = AV2 - AV13 / 2 ELSE AV29 = AV2 - AV3
100 IF AV8 = 1 THEN START BV8
350 IF BV1 = 0 THEN AV30 = AV2 + AV13 / 2 ELSE AV30 = AV2 + AV3
110 IF+ BV8 THEN S = AV2
120 IF AV8 = 0 THEN STOP BV8
130 IF- BV8 THEN START T , END
360 REM Flow Calc (FPM & CFM)
140 IF TIMEON( BV8 ) > 0:30:00 THEN RLQ AV8@8 , END
370 AV25 = ( ( AV21 - AV20 ) * A + AV20 ) / AV22 : REM RQSTFLOW(fpm)
150 IF TIMEON( T ) > 20 THEN AV2@8 = S , STOP T , END
380 AV24 = AI4 * AV23 : REM CORRECTED FPM
160 IF T THEN END
390 AV27 = AV24 * AV22 : REM CFM In
170 IF BV8 = 0 THEN GOTO 210
400 REM Damper Control
180 IF AV2 > 1 THEN AV2@8 = 1 : IF AV2 < 1 THEN AV2@8 = 0 : REM Bal Limits BAC-70XX General
410 IF AV17 > 65 AND BV4 THEN START B
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Application Guide, AN0311A Rev A
420 IF AV17 > 65 AND NOT BV4 THEN START C
Program Two – Single Duct Pressure Dependent
430 IF AV17 < 35 AND BV4 THEN START C
10 REM *** CHECK AV10 FOR PRESSURE DEPENDENT CONTROL ***
440 IF AV17 < 35 AND NOT BV4 THEN START B
20 IF AV10 = 2 THEN GOTO 40
450 IF AV17 > 35 AND AV17 < 65 THEN STOP B , STOP C
30 END
460 IF B THEN STOP C
40 REM Check For No Motion
470 IF C THEN STOP B
50 IF AV8 = -2 THEN START O
480 X = 1 / SCANS
60 IF AV8 > -2 THEN STOP O , STOP BV1
490 IF AV17 < 99 AND AV17 > 1 THEN GOTO 500 ELSE GOTO 560
70 IF TIMEON( O ) > 0:30:00 THEN START BV1
500 IF AV17 < 36 OR AV17 > 64 THEN START D ELSE STOP D
510 IF TIMEON( D ) > 0:00:10 THEN GOTO 560
80 REM Temp SPs If no NetSensor use AI1 & AI2 (Not for STE-6012/16)
530 IF Y > 5 THEN Y = 0
100 IF BV9 THEN GOTO 140
550 IF Y > Z THEN STOP B , STOP C
120 IF AI1 < 0 THEN RLQ AV1@8 , RLQ AV2@8 , GOTO 140 ELSE AV1@8 = AI1 : REM Use Sensor if present
520 Y = X + Y
90 BV9 = NETSENSORSTATUS
540 Z = ABS( AV17 - 50 ) / 50
110 IF NOT BV9 THEN RLQ AV8@8
560 IF B THEN AO4 = 10 570 IF C THEN AO4 = 0
590 IF AO4 > 7 THEN START G ELSE STOP G
130 IF AI2 > 89 THEN GOTO 140 ELSE AV2@8 = AI2 : REM Use Setpoint if present
610 IF TIMEON( G ) > 0:06:00 OR TIMEON( H ) > 0:06:00 THEN AO4 = 5 , START I ELSE STOP I
150 AV2@8 = MIN( MAX( AV2 , AV11 ) , AV12 ) : REM Apply SP limits
580 IF NOT B AND NOT C THEN AO4 = 5
140 IF BV3 THEN AV26 = AV29 ELSE AV26 = AV30
600 IF AO4 < 3 THEN START H ELSE STOP H
620 IF TIMEON( I ) > 0:06:00 THEN STOP G , STOP H , STOP B , STOP C
160 IF BV1 = 0 THEN AV29 = AV2 - AV13 / 2 ELSE AV29 = AV2 - AV3
640 IF BV4 AND AO4 > 7 THEN AV32 = AV32 - X * 100 / AV31
180 REM HEAT MODE
170 IF BV1 = 0 THEN AV30 = AV2 + AV13 / 2 ELSE AV30 = AV2 + AV3
630 IF BV4 AND AO4 < 3 THEN AV32 = AV32 + X * 100 / AV31
650 IF NOT BV4 AND AO4 < 3 THEN AV32 = AV32 - X * 100 / AV31
190 IF LOOP3 > 30 THEN START Q 200 IF LOOP3 < 1 THEN STOP Q
660 IF NOT BV4 AND AO4 > 7 THEN AV32 = AV32 + X * 100 / AV31
210 IF TIMEON( Q ) > 0:01:00 THEN START BV3 ELSE STOP BV3
670 IF AV32 > 100 THEN AV32 = 100 680 IF AV32 < 0 THEN AV32 = 0
220 REM CALIBRATE DAMPER
690 END
230 IF+ INT( TIME / 100 ) < 1 THEN START U 240 IF POWERLOSS THEN START U
250 IF TIMEON( U ) > AV31 THEN STOP U BAC-70XX General
15
Application Guide, AN0311A Rev A
260 IF U AND BV4 THEN AO4 = 0 , STOP BV3
510 REM ESTIMATE DAMPER POSITION
270 IF U AND NOT BV4 THEN AO4 = 10 , STOP BV3
520 P = 1 / SCANS
530 IF NOT BV4 AND AO4 < 3 THEN AV32 = AV32 - P * 100 / AV31
280 IF U OR BV3 THEN GOTO 520
540 IF NOT BV4 AND AO4 > 7 THEN AV32 = AV32 + P * 100 / AV31
290 REM Damper Control
300 IF AV16 > 70 THEN START C , STOP B 310 IF AV16 < 30 THEN START B , STOP C
550 IF BV4 AND AO4 < 3 THEN AV32 = AV32 + P * 100 / AV31
330 X = 1 / SCANS
570 IF AV32 > 100 THEN AV32 = 100
320 IF AV16 > 35 AND AV16 < 65 THEN STOP B , STOP C
560 IF BV4 AND AO4 > 7 THEN AV32 = AV32 - P * 100 / AV31
340 IF AV16 < 99 AND AV16 > 1 THEN GOTO 350 ELSE GOTO 420
580 IF AV32 < 0 THEN AV32 = 0 590 END
350 IF AV16 < 36 OR AV16 > 64 THEN START D ELSE STOP D
Program Three – Reheat (Modulating and 2-Stage)
360 IF TIMEON( D ) > 0:00:10 THEN GOTO 420
10 REM --------- FAN POWERED AND/OR 2-STAGE AND/OR MODULATING REHEAT SEQUENCE ----------
370 REM The following will pulse the actuator as it nears satisfied position to reduce overshoot
20 REM Entire reheat sequence is easily disabled by toggling BV5 on-off.
380 Y = X + Y : IF Y > 5 THEN Y = 0 390 Z = ABS( AV16 - 50 ) / 50
30 REM -- STAGES ON AT 35, 65 % OF PROPORTIONAL BAND BELOW SETPOINT.
400 IF Y > Z THEN STOP B , STOP C 410 REM Drive Damper
40 REM Auxillary flow setpoint is used when AUX-FLOW (AV28) IS GREATER THEN THAN MIN-FLOW
420 IF B AND NOT BV4 THEN AO4 = 0 : REM Close damper CCW 430 IF B AND BV4 THEN AO4 = 10 : REM Close damper CW
50 IF BV5 THEN GOTO 90
440 IF C AND NOT BV4 THEN AO4 = 10 : REM Open damper CW
60 AO1 = 0 : STOP BO2
70 IF TIMEOFF( BO2 ) > 0:00:30 THEN STOP BO3
450 IF C AND BV4 THEN AO4 = 0 : REM Open damper CCW
80 END : REM If no reheat then stop
460 IF NOT B AND NOT C THEN AO4 = 5 : REM Stop Damper
90 REM *** Check AV10 Status to determine reheat type ***
470 IF AO4 > 7 THEN START G ELSE STOP G : REM Check Drive Time
91 IF AV28 0:06:00 OR TIMEON( H ) > 0:06:00 THEN AO4 = 5 , START I ELSE STOP I : REM Stop Driving Damper
100 IF AV10 = 2 AND BV3 THEN GOTO 300 : REM Check for Pressure Dependent
500 IF TIMEON( I ) > 0:03:00 THEN STOP G , STOP H , STOP B , STOP C : REM Allow Damper to be Driven BAC-70XX General
110 IF AV10 = 3 THEN GOTO 210 : REM PRESSURE INDEPENDENT Reheat with Fan
16
Application Guide, AN0311A Rev A
120 REM Reheat Without Fan
390 REM CONTROL REHEAT STAGES
140 AO1 = AV18 : REM Modulating Valve
400 IF AV18 > 35 AND AV32 > AV9 - 2 THEN START BO2
150 IF AV18 > 10 AND X > AV20 THEN AV25 = X
410 IF AV18 > 65 AND AV32 > AV9 - 2 THEN START BO3
160 IF AV18 > 35 AND AV24 > X - X * 0.1 THEN START BO2 : REM Staged Reheat
420 IF AV18 < 45 OR AV32 < AV9 - 2 THEN STOP BO3
170 IF AV18 > 65 AND BO2 THEN START BO3
430 IF AV18 < 15 OR AV32 < AV9 - 2 THEN STOP BO2
180 IF AV18 < 45 THEN STOP BO3 190 IF AV18 < 15 THEN STOP BO2
440 AO1 = AV18 : REM Modulating Valve
200 END
450 END
210 REM Reheat With Fan
Program Four – Balancing/Calibration Utility
230 AO1 = AV18 : REM Modulating Valve
240 IF AV18 > 10 AND X > AV20 THEN AV25 = X
10 REM If Rnd box value present, RLQ values (@8) from Rect (and visa versa)
250 IF AV18 > 15 THEN START BO3 : REM START FAN
20 IF AV33 > 0 THEN RLQ AV34@8 , RLQ AV35@8 , RLQ AV34@1 , RLQ AV35@1
260 IF AV18 > 35 AND AV24 > X - X * 0.1 THEN START BO2 : REM START HEAT
30 IF AV34 > 0 THEN RLQ AV33@8 , RLQ AV33@1
270 IF AV18 < 15 THEN STOP BO2 : REM STOP HEAT
40 IF AV35 > 0 THEN RLQ AV33@8 , RLQ AV33@1
280 IF AO1 < 3 AND TIMEOFF( BO2 ) > 0:00:30 THEN STOP BO3 : REM STOP FAN
50 REM Calc box area via AV32 Rnd duct or AV34 & AV35 for Rect duct
290 END
60 REM IF AV33 > 0 THEN AV22 = 0.785 * AV33 ^ 2 / 144 ELSE AV22 = AV34 * AV35 / 144
300 REM --------- Pressure Dependent 2-STAGE REHEAT SEQUENCE ----------
310 REM Entire reheat sequence is easily disabled by toggling BV5 on-off.
70 REM Calculate SensorCorrection AV23 (using AV36 & AV37 values )
320 REM -- STAGES ON AT 35%, 65% OF PROPORTIONAL BAND BELOW SETPOINT.
80 H = AV37 / AV21 : L = AV36 / AV20
330 REM *** OPEN DAMPER TO AV9%
90 AV23 = ( AV38 - AV20 ) * ( H - L ) / ( AV21 - AV20 ) + L
350 IF AV32 < AV9 AND NOT BV4 THEN AO4 = 10
100 REM Calculate SensorCorrection AV23 (using AV36 & AV37 values )
370 IF AV32 > AV9 + 2 AND NOT BV4 THEN AO4 = 0
120 AV36@10 = AV20 : AV37@10 = AV21 : REM Sets temporary values
340 IF AV32 < AV9 AND BV4 THEN AO4 = 0
360 IF AV32 > AV9 + 2 AND BV4 THEN AO4 = 10
110 AV38 = AV25 * AV22 : REM RQSTFLOW in CFM..AV38 for display on graphics
380 IF AV32 > AV9 AND AV32 < AV9 + 2 THEN AO4 = 5
130 END
BAC-70XX General
17
Application Guide, AN0311A Rev A
Program Five – NetSensorButtons 10 REM -- NetSensor Buttons -20 IF BV8 = 0 THEN GOTO 90 30 REM Balancing Mode
40 AV20@8 = AV5 : REM AV20 = MinCFMSP Btn 5 50 AV21@8 = AV7 : REM AV21 = MaxCFMSP Btn 7 60 AV36@8 = AV4 : REM AV36 = ActualMinCFM Btn 4
70 AV37@8 = AV6 : REM AV37 = ActualMaxCFM Btn 6 80 GOTO 140
90 REM Normal Mode
100 AV5@8 = AV20 : REM MinCFMSP Btn 5 = AV20 110 AV7@8 = AV21 : REM MaxCFMSP Btn 7 = AV21 120 AV4@8 = AV36 : REM ActualMinCFM Btn 4 = AV36 130 AV6@8 = AV37 : REM ActualMaxCFM Btn 6 = AV37 140 END
BAC-70XX General
18
Application Guide, AN0311A Rev A
BAC-70X1 Series (BACnet AAC for VAV) This section is specific to the BAC-70X1 series (BACnet AAC for VAV). Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
Isolation lamps
MS/TP network
RJ-12 connector for NetSensor Input pullup resistors
Input
EIA-485 end-ofline termination
Output
Restart button
Power Power jumper
BAC-70X1 Series (BACnet AAC for VAV) Section
19
Application Guide, AN0311A Rev A
Sample Applications (BAC-70X1) VAV—Pressure Independent
Input Terminals
VAV Pressure Independent Input Connections
BACnet Objects
I1
SPACE TEMP (OPT)
AI1
I2
SPACE SETPOINT (OPT)
AI2
I3
DISCH AIR TEMP (OPT)
AI3
AIRFLOW (INTERNAL)
AI4
Output Terminals
VAV Pressure Independent Output Connections
BACnet Objects
O1
MODULATING HEAT
AO1
O2
STAGE 1 HEAT
AO2
STAGE 2 HEAT
AO3
DAMPER (INTERNAL)
AO4
O3
NOTE: See also Sequence of Operation on page 8.
CAUTION
NOTE: Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
Do not mistakenly connect 24 VAC to an analog output ground. See the terminal label for the correct terminal.
BAC-70X1 Series (BACnet AAC for VAV) Section
20
Application Guide, AN0311A Rev A
REFERENCE ST ST DAT AF
# AO1 AO2 AO3 AO4
OUTPUTS OUTPUT NAME MODULATING HEAT STAGE 1 HEAT STAGE 2 HEAT DAMPER (INTERNAL)
INPUT/OUTPUT LIST: BAC-70X1_PI_VAV
PART DESCRIPTION BACNET AAC FOR VAV, 3UI, 25VA AIRFLOW SENSOR, CHOOSE SIZE 'X' FROM DATA SHEET CHOOSE 6011 OR 6014 SPACE TEMP SENSOR MODEL TEMP SENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH CHOOSE APPROPRIATE NETSENSOR MODEL W/OCC NETSENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH 4" RIGID DUCT TEMP SENSOR, 10K TYPE III MODULATING 24VAC VALVE, SIZE 'YYY' FROM DATA SHEET 3-STAGE RELAY CONTROLLER 12VDC CONTROL RELAY CONTROL TRANSFORMER, 120/240/277/480: 24VAC, 50VA
BAC-70X1 SSS-100X STE-60XX-10 KMD-569X KMD-12X1 KMD-569X STE-1405 VEB-43YYYBCK REE-5001 REE-3112 XEE-6311-050 DDC AF ST ST-C NS1 NS-C DAT HTV HT3 HTX TX
REFERENCE HTV HT1 HT2 DMPR
PART #
BILL OF MATERIAL: BAC-70X1_PI_VAV
INPUTS INPUT NAME SPACE TEMP (OPT) SPACE SETPOINT (OPT) DISCH AIR TEMP (OPT) AIRFLOW (INTERNAL)
REFERENCE
# AI1 AI2 AI3 AI4
VAV Sample Schematic—Pressure Independent
BAC-70X1 Series (BACnet AAC for VAV) Section
21
Application Guide, AN0311A Rev A
VAV—Pressure Independent with Fan
Input Terminals
VAV Pressure Independent with Fan Input Connections
BACnet Objects
I1
SPACE TEMP (OPT)
AI1
I2
SPACE SETPOINT (OPT)
AI2
I3
CONFIG
AI3
AIRFLOW (INTERNAL)
AI4
Output Terminals
VAV Pressure Independent with Fan Output Connections
BACnet Objects
O1
MODULATING HEAT
AO1
O2
STAGE 1 HEAT
AO2
O3
FAN
AO3
DAMPER (INTERNAL)
AO4
NOTE: See also Sequence of Operation on page 8.
CAUTION
NOTE: Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
Do not mistakenly connect 24 VAC to an analog output ground. See the terminal label for the correct terminal.
BAC-70X1 Series (BACnet AAC for VAV) Section
22
Application Guide, AN0311A Rev A
AF
REFERENCE ST ST
OUTPUTS OUTPUT NAME
AO4 DAMPER (INTERNAL)
AO1 MODULATING HEAT AO2 STAGE 1 HEAT AO3 FAN
#
INPUT/OUTPUT LIST: BAC-70X1_PI_FAN
PART # BAC-70X1 SSS-100X STE-60XX-10 KMD-569X KMD-12X1 KMD-569X VEB-43YYYBCK REE-5001 REE-3112 REE-3112 XEE-6311-050
DDC AF ST ST-C NS1 NS-C HTV HT3 HT1 FAN TX
BAC-70X1 Series (BACnet AAC for VAV) Section REFERENCE HTV HT1 FAN DMPR
BACNET AAC FOR VAV, 3UI, 25VA AIRFLOW SENSOR, CHOOSE SIZE 'X' FROM DATA SHEET CHOOSE 6011 OR 6014 SPACE TEMP SENSOR MODEL TEMP SENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH CHOOSE APPROPRIATE NETSENSOR MODEL W/OCC NETSENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH MODULATING 24VAC VALVE, SIZE 'YYY' FROM DATA SHEET 3-STAGE RELAY CONTROLLER 12VDC CONTROL RELAY 12VDC CONTROL RELAY CONTROL TRANSFORMER, 120/240/277/480: 24VAC, 50VA
PART DESCRIPTION
BILL OF MATERIAL: BAC-70X1_PI_FAN
INPUTS INPUT NAME SPACE TEMP (OPT) SPACE SETPOINT (OPT) CONFIG AIRFLOW (INTERNAL)
REFERENCE
# AI1 AI2 AI3 AI4
VAV Sample Schematic—Pressure Independent with Fan
23
Application Guide, AN0311A Rev A
VAV—Pressure Dependent
VAV Pressure Independent with Fan Input Connections
BACnet Objects
I1
SPACE TEMP (OPT)
AI1
I2
SPACE SETPOINT (OPT)
AI2
CONFIG
AI3
AIRFLOW (INTERNAL)
AI4
Input Terminals
I3
Output Terminals
VAV Pressure Independent with Fan Output Connections
BACnet Objects
O1
MODULATING HEAT
AO1
O2
STAGE 1 HEAT
AO2
O3
FAN
AO3
DAMPER (INTERNAL)
AO4
NOTE: See also Sequence of Operation on page 8.
CAUTION
NOTE: Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
Do not mistakenly connect 24 VAC to an analog output ground. See the terminal label for the correct terminal.
BAC-70X1 Series (BACnet AAC for VAV) Section
24
Application Guide, AN0311A Rev A
REFERENCE ST ST
# AO1 AO2 AO3 AO4
OUTPUTS OUTPUT NAME MODULATING HEAT STAGE 1 HEAT STAGE 2 HEAT DAMPER (INTERNAL)
INPUT/OUTPUT LIST: BAC-70X1_PD_VAV
PART DESCRIPTION BACNET AAC FOR VAV, 3UI, 25VA CHOOSE 6011 OR 6014 SPACE TEMP SENSOR MODEL TEMP SENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH CHOOSE APPROPRIATE NETSENSOR MODEL W/OCC NETSENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH MODULATING 24VAC VALVE, SIZE 'YYY' FROM DATA SHEET 3-STAGE RELAY CONTROLLER 12VDC CONTROL RELAY MODULATING 24V ACTUATOR, SIZE 'X' FROM DATA SHEET CONTROL TRANSFORMER, 120/240/277/480: 24VAC, 50VA 1k RESISTOR
BAC-70X1 STE-60XX-10 KMD-569X KMD-12X1 KMD-569X VEB-43YYYBCK REE-5001 REE-3112 MEP-4X02 XEE-6311-050 DDC ST ST-C NS1 NS-C HTV HT3 HTX DD TX RES
REFERENCE HTV HT1 HT2 DMPR
PART #
BILL OF MATERIAL: BAC-70X1_PD_VAV
INPUTS INPUT NAME SPACE TEMP (OPT) SPACE SETPOINT (OPT) CONFIG N/A
REFERENCE
# AI1 AI2 AI3 AI4
VAV Sample Schematic—Pressure Dependent
BAC-70X1 Series (BACnet AAC for VAV) Section
25
Application Guide, AN0311A Rev A
BAC-70X1 Series (BACnet AAC for VAV) Section
26
Application Guide, AN0311A Rev A
BAC-70X3 Series (BACnet AAC for VAV FIU) This section is specific to the BAC-70X3 series (BACnet AAC for VAV FIU). Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
Isolation lamps
MS/TP network
RJ-12 connector for NetSensor Input pullup resistors
Input
EIA-485 end-ofline termination
Output
Restart button
Power Power jumper
BAC-70X3 Series (BACnet AAC for VAV FIU) Section
27
Application Guide, AN0311A Rev A
Sample Applications (BAC-70X3) VAV—Pressure Independent
Input Terminals
VAV Pressure Independent Input Connections
BACnet Objects
I1
SPACE TEMP (OPT)
AI1
I2
SPACE SETPOINT (OPT)
AI2
I3
DISCH AIR TEMP (OPT)
AI3
AIRFLOW (INTERNAL)
AI4
Output Terminals
VAV Pressure Independent Output Connections
BACnet Objects
O1
MODULATING HEAT
OUT1
T2
STAGE 1 HEAT
BO2
STAGE 2 HEAT
BO3
DAMPER (INTERNAL)
AO4
R3
NOTE: See also Sequence of Operation on page 8.
CAUTION
NOTE: Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
Do not mistakenly connect 24 VAC to an analog output ground. See the terminal label for the correct terminal.
BAC-70X3 Series (BACnet AAC for VAV FIU) Section
28
Application Guide, AN0311A Rev A
REFERENCE ST ST DAT AF
OUTPUTS OUTPUT NAME BO2 STAGE 1 HEAT BO3 STAGE 2 HEAT AO4 DAMPER (INTERNAL)
OUT1 MODULATING HEAT
#
INPUT/OUTPUT LIST: BAC-70X3_PI_VAV
PART DESCRIPTION BACNET AAC FOR VAV, 1UI, 1 TRIAC, 1 N.O. RELAY, 25VA AIRFLOW SENSOR, CHOOSE SIZE 'X' FROM DATA SHEET CHOOSE 6011 OR 6014 SPACE TEMP SENSOR MODEL TEMP SENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH CHOOSE APPROPRIATE NETSENSOR MODEL W/OCC NETSENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH 4" RIGID DUCT TEMP SENSOR, 10K TYPE III MODULATING 24VAC VALVE, SIZE 'YYY' FROM DATA SHEET N.O., 24VAC, 10VA VALVE, SIZE 'YYY' FROM DATA SHEET 3-STAGE RELAY CONTROLLER CONTROL TRANSFORMER, 120/240/277/480: 24VAC, 50VA 30VAC VARISTOR. PURCHASE FROM KELE & ASSOC.
BAC-70X3 SSS-100X STE-60XX-10 KMD-569X KMD-12X1 KMD-569X STE-1405 VEB-43YYYBCK VEZ-41YYYMBM REE-5001 XEE-6311-050 V47ZA1 DDC AF ST ST-C NS1 NS-C DAT HTV PWM HT3 TX VAR
REFERENCE HTV HT1 HT2 DMPR
PART #
BILL OF MATERIAL: BAC-70X3_PI_VAV
INPUTS INPUT NAME SPACE TEMP (OPT) SPACE SETPOINT (OPT) DISCH AIR TEMP (OPT) AIRFLOW (INTERNAL)
REFERENCE
# AI1 AI2 AI3 AI4
VAV Sample Schematic—Pressure Independent
BAC-70X3 Series (BACnet AAC for VAV FIU) Section
29
Application Guide, AN0311A Rev A
VAV—Pressure Independent with Fan
VAV Pressure Independent with Fan Input Connections
BACnet Objects
I1
SPACE TEMP (OPT)
AI1
I2
SPACE SETPOINT (OPT)
AI2
CONFIG
AI3
AIRFLOW (INTERNAL)
AI4
Input Terminals
I3
Output Terminals
VAV Pressure Independent with Fan Output Connections
BACnet Objects
O1
MODULATING HEAT
OUT1
T2
STAGE 1 HEAT
BO2
R3
FAN
BO3
DAMPER (INTERNAL)
AO4
NOTE: See also Sequence of Operation on page 8.
CAUTION Do not mistakenly connect 24 VAC to an analog output ground. See the terminal label for the correct terminal.
NOTE: Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
BAC-70X3 Series (BACnet AAC for VAV FIU) Section
30
Application Guide, AN0311A Rev A
AF
REFERENCE ST ST
OUTPUTS OUTPUT NAME BO2 STAGE 1 HEAT BO3 FAN AO4 DAMPER (INTERNAL)
OUT1 MODULATING HEAT
#
INPUT/OUTPUT LIST: BAC-70X3_PI_FAN
PART DESCRIPTION BACNET AAC FOR VAV, 1UI, 1 TRIAC, 1 N.O. RELAY, 25VA AIRFLOW SENSOR, CHOOSE SIZE 'X' FROM DATA SHEET CHOOSE 6011 OR 6014 SPACE TEMP SENSOR MODEL TEMP SENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH CHOOSE APPROPRIATE NETSENSOR MODEL W/OCC NETSENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH MODULATING 24VAC VALVE, SIZE 'YYY' FROM DATA SHEET N.O., 24VAC, 10VA VALVE, SIZE 'YYY' FROM DATA SHEET 3-STAGE RELAY CONTROLLER CONTROL TRANSFORMER, 120/240/277/480: 24VAC, 50VA 30VAC VARISTOR. PURCHASE FROM KELE & ASSOC.
PART # BAC-70X3 SSS-100X STE-60XX-10 KMD-569X KMD-12X1 KMD-569X VEB-43YYYBCK VEZ-41YYYMBM REE-5001 XEE-6311-050 V47ZA1
REFERENCE HTV HT1 FAN DMPR
DDC AF ST ST-C NS1 NS-C HTV PWM HT3 TX VAR
BILL OF MATERIAL: BAC-70X3_PI_FAN
INPUTS INPUT NAME SPACE TEMP (OPT) SPACE SETPOINT (OPT) CONFIG AIRFLOW (INTERNAL)
REFERENCE
# AI1 AI2 AI3 AI4
VAV Sample Schematic—Pressure Independent with Fan
BAC-70X3 Series (BACnet AAC for VAV FIU) Section
31
Application Guide, AN0311A Rev A
VAV—Pressure Dependent
VAV Pressure Independent with Fan Input Connections
BACnet Objects
I1
SPACE TEMP (OPT)
AI1
I2
SPACE SETPOINT (OPT)
AI2
Input Terminals
I3
CONFIG
AI3
DAMPER (INTERNAL)
AO4
Output Terminals
VAV Pressure Independent with Fan Output Connections
BACnet Objects
O1
MODULATING HEAT
OUT1
T2
STAGE 1 HEAT
BO2
R3
STAGE 2 HEAT
BO3
DAMPER (INTERNAL)
AO4
NOTE: See also Sequence of Operation on page 8.
CAUTION Do not mistakenly connect 24 VAC to an analog output ground. See the terminal label for the correct terminal.
NOTE: Starting in late April 2011, KMC Controls began manufacturing BAC-7000 series controllers with the application programs described in this application guide. Controllers configured with these applications are identified with date code “11115” and later.
BAC-70X3 Series (BACnet AAC for VAV FIU) Section
32
Application Guide, AN0311A Rev A
REFERENCE ST ST
OUTPUTS OUTPUT NAME BO2 STAGE 1 HEAT BO3 STAGE 2 HEAT AO4 DAMPER (INTERNAL)
OUT1 MODULATING HEAT
#
INPUT/OUTPUT LIST: BAC-70X3_PD_VAV
PART # BAC-70X3 STE-60XX-10 KMD-569X KMD-12X1 KMD-569X VEB-43YYYBCK VEZ-41YYYMBM REE-5001 MEP-4X02 XEE-6311-050 V47ZA1
DDC ST ST-C NS1 NS-C HTV PWM HT3 DD TX RES VAR
REFERENCE HTV HT1 HT2 DMPR
BACNET AAC FOR VAV, 1UI, 1 TRIAC, 1 N.O. RELAY, 25VA CHOOSE 6011 OR 6014 SPACE TEMP SENSOR MODEL TEMP SENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH CHOOSE APPROPRIATE NETSENSOR MODEL W/OCC NETSENSOR PLENUM CABLE W/CONN. CHOOSE LENGTH MODULATING 24VAC VALVE, SIZE 'YYY' FROM DATA SHEET N.O., 24VAC, 10VA VALVE, SIZE 'YYY' FROM DATA SHEET 3-STAGE RELAY CONTROLLER MODULATING 24V ACTUATOR, SIZE 'X' FROM DATA SHEET CONTROL TRANSFORMER, 120/240/277/480: 24VAC, 50VA 1k RESISTOR 30VAC VARISTOR. PURCHASE FROM KELE & ASSOC.
PART DESCRIPTION
BILL OF MATERIAL: BAC-70X3_PD_VAV
INPUTS INPUT NAME SPACE TEMP (OPT) SPACE SETPOINT (OPT) CONFIG N/A
REFERENCE
# AI1 AI2 AI3 AI4
VAV Sample Schematic—Pressure Dependent
BAC-70X3 Series (BACnet AAC for VAV FIU) Section
33
Application Guide, AN0311A Rev A
Index Symbols
O
4-20 mA Inputs: 7
Occupancy Sensor. See Motion Sensor Outputs: 8, 10
A
P
Actual Airflow: 12 Additional Information: 4 Air Balancing: 5 Auto Run: 12
Phasing, Network and Power: 6 Pressure Dependent: 9 Pressure Independent: 9, 20 with fan: 9 Programming. See Control Basic Programs Program Objects, Auto Run: 12 Pull-Up Resistor Switches: 6, 7
B BAC-70X1 Series: 5, 19 BAC-70X3 Series: 5, 27 Balancer Override: 12
R
C
Reheat: 10 Relinquish Default: 12, 13 RTD Inputs: 6
Conductor Size and Number: 6 Conduit: 6 Connecting Inputs: 6 Control Basic Programs: 14 CW-Close: 10
S Sequencing Pressure Dependent: 9 Pressure Independent: 8 Space Setpoints: 7 Standby Mode: 8 Standby Operation: 5 STE-6000 Sensors: 5, 9 Switches, EOL and Pull-Up: 7
E External 250 Ohm Resistor: 7
F Fan Control: 7
G
V
Ground Loops: 6
VAV 2-stage Reheat: 7 Pressure Dependent: 24, 32 Pressure Independent: 20, 22, 28 Proportional Reheat: 7 VOLFACTR: 11 Volume Conversion Factor: 11
I Important Notices: 4 Inputs: 6 Installation: 4
K
W
KMD-12X1 NetSensor: 5 KMD-1161 NetSensor: 12
Wiring Considerations: 6
M Maximum Flow Setpoint: 11, 13 Minimum Flow Setpoint: 11, 13 Motion Sensor: 7
KMC Controls 19476 Industrial Drive
N
New Paris, IN 46553 574.831.5250; Fax 574.831.5252
NetSensor: 8
BAC-70XX General © 2012 KMC Controls, Inc.
www.kmccontrols.com;
[email protected]
34
Application Guide,AN0311A AN0311ARev RevAA
