Digital Designer's Guide

Digital Designer’s Guide 000-035-07B SP-022B Important notices ©2010, KMC Controls, Inc. BACstage, FullBAC and TotalControl are trademarks of KMC Controls, Inc. WinControl XL Plus, NetSensor and the KMC logo are registered 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. Printed in U.S.A. Disclaimer The material in this manual 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 manual. 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 manual. KMC Controls P. O. B ox 4 97 19476 Industrial Drive New Paris, IN 46553 U.S.A. TEL: 1.574.831.5250 FAX: 1.574.831.5252 E-mail: [email protected] Digital Designer’s Guide Contents Part 1: DDC practices AN0504L Connecting inputs and outputs to KMC controllers............................................ 1-3 AN0604D Tips for connecting 24-volt power................................................................... 1-15 Part 2: Networking connectivity AN0903A Building Controls & Your Ethernet Network ...................................................... 2-3 AN0404A Planning BACnet networks................................................................................ 2-7 AN0704A Connecting EIA–485 network segments with fiber optic cables ....................... 2-31 Part 3: Job specific controllers AN0404B KMD-7001 and KMD-7051 VAV Controller...................................................... 3-3 AN0404C KMD–7002 and KMD–7052 VAV Controller................................................... 3-29 AN0905A KMD-7003 and KMD-7053 VAV Controller.................................................... 3-43 AN0404D KMD–7011 VAV Controller ............................................................................ 3-67 AN0404E KMD–7013 VAV Controller ............................................................................ 3-89 AN0404F KMD–7101/02 Fan Coil Unit Controller........................................................ 3-109 AN0404G KMD–7301 AHU Controller.......................................................................... 3-127 AN0404H KMD–7302 Roof Top Unit Controller............................................................ 3-143 AN0404I KMD-7401 Heat Pump Controller................................................................. 3-157 AN0905B Using the NetSensor on preprogrammed controllers ..................................... 3-171 AN0805A The NetSensor VAV balancer program.......................................................... 3-175 Part 4: Program modules AN0504A Dial-out program for KMD-5501....................................................................... 4-3 AN0504B Calculating enthalpy ......................................................................................... 4-9 AN0504C Controlling a tri-state valve actuator from two outputs .................................... 4-13 AN0504E Examples of lead/lag programs........................................................................ 4-19 AN0604A Optimal start/stop routine................................................................................ 4-27 AN0909A A simplified optimum start program ................................................................ 4-31 AN0504F Programming override timers .......................................................................... 4-39 AN0504G Working with pulse inputs .............................................................................. 4-43 AN0504H Calculating boiler reset temperature................................................................ 4-45 AN0604B Calculating discharge reset based on space temperature ................................. 4-53 AN0504I Signal conditioning ......................................................................................... 4-55 AN0504J Example programs using tables ....................................................................... 4-59 AN0604C Monitoring refrigeration systems for moisture and flash gas............................. 4-65 AN1009A Determining occupancy with motion sensing.................................................. 4-75 AN0410A Measuring outside air temperature .................................................................. 4-83 iii KMC Controls iv Digital Designer’s Guide Part 1 DDC practices The application notes in this part of the Digital Designers Guide covers topics that are common to connecting all KMC Controllers to HVAC systems and components. AN0504L Connecting inputs and outputs to KMC controllers ....................... 1-3 AN0604D Tips for connecting 24-volt power .............................................. 1-15 1–1 KMC Controls 1–2 Digital Designer’s Guide Application Note–AN0504L Revision A Connecting inputs and outputs to KMC controllers This application note describes methods to connect input and output devices to KMC digital controllers. Related materials In addition to the material presented in this application note, review and have available the following reference materials. ◆ Installation and operation guides for equipment connecting to the controller ◆ User’s manuals for Acuity, BACstage or WinControl XL Plus ◆ System drawings ◆ Installation and operation guides for equipment to which the KMC controllers will be connected Topics covered in this application note The information covered in this application note describes various methods for connecting a KMC controller—either a KMD series or BACnet model—to external equipment and devices. The examples in the illustrations show connections to a KMD–5801 controller; exact connecting points for other KMC models can be found in the installation and operation guides for those controllers. ◆ Connecting inputs on page 1-4. Active voltage inputs and passive inputs are both described in this section. ◆ Connecting outputs on page 1-8. This section includes directly connecting devices and using the HPO–6700 series output boards. ◆ Current loop inputs and outputs on page 1-11. 1–3 Connecting inputs and outputs to KMC controllers Connecting inputs KMC Controls Connecting inputs KMC Controls designed the KMD an BAC series controllers to respond to either analog or digital signals (analog and binary signals in BACnet controllers). For the exact method to program each type of input see the on-line help and the reference manual for the software in use. By using the optional pull-up resistors, either passive or active devices may be connected to the inputs. Active voltage inputs are described in the following section; see Passive inputs on page 1-5 for examples of thermistor, resistive and switch contact inputs. Active voltage source inputs This section includes examples of active voltage inputs; current inputs are described in Current loop inputs and outputs on page 1-11. Controller inputs respond to a voltage signal which can be either an analog or digital format. To connect active devices to a universal input on a KMC controller, connect the output signal from the device—typically identified as (+), Signal or Output—to the appropriate input terminal on the controller. Connect the common or ground of the device to the nearest input ground terminal. Illustration 1 and Illustration 2 are examples of input configurations for active inputs. The circuit in Illustration 1 is an input configuration suitable for signals up to 5 volts DC. Set pull-up resistor options for None or Off. + 5 DC 05 Volt DC Internal (+) Input () 10k GROUNDS To microprocessor 12345678 Illustration 1 Voltage input from a 5–volt device 1–4 AN0504L Revision A Connecting inputs and outputs to KMC controllers Digital Designer’s Guide Connecting inputs Inputs on KMC controllers are limited to input signals that are less than 5 volts DC. To use a a higher voltage input, add a resistive voltage divider. Illustration 2 is an example of a voltage divider suitable for a 0–10 volt input. Set pull-up resistor options for None or Off. + 5 DC 010 Volt DC Internal (+) Input () 10k GROUNDS 10k To 10k microprocessor 12345678 Illustration 2 Voltage divider for 0-10 volt DC input Passive inputs Passive inputs, unlike active inputs, do not produce an active input signal. They require a voltage source that can be sensed by the controller. All KMC controllers include a pull-up resistor option which, when selected, supplies voltage to the passive device. This voltage can then be detected by the input circuit in the controller. The various models of KMC controllers use different methods to select the pull-up resistor. Table 1 lists the various methods to select pull-up resistors in controllers. For the exact method to select pull-up resistors, see the installation guide supplied with the controller. Table 1 Pull-up resistors Controller type Pull-up value Selection method BAC–5801 10k DIP switch BAC–5831 1kand0k DIP switch BAC–7000 series 10k DIP switch BAC–7300 series 10k DIP switch KMD–5220 input module 250, 1kand0k Jumper KMD–5205 1kand0k Jumper KMD–5270 KMD–5801 10k DIP switch KMD–5802 KMD–5821 1kand0k DIP switch KMD–5831 1kand0k Jumper 5100 and 6000 series 10k Clip out resistor AN0504L Revision A 1–5 Connecting inputs and outputs to KMC controllers Connecting inputs KMC Controls Thermistor input A thermistor is a passive input

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