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Table Of Contents

140-0960

Building Technologies

2015

-10-05

BACnet PTEC Controller

Unit Conditioner - Slave Mode,

Application 6689

Application Note

Summary of content (11 pages)

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BACnet PTEC Controller Unit Conditioner - Slave Mode, Application 6689 Application Note 140-0960 2015-10-05 Building Technologies
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Table of Contents Overview ............................................................................................................................. 4 BACnet .............................................................................................................................. 5 Hardware Inputs .................................................................................................................. 5 Hardware Outputs .......................................................................
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Overview BACnet Overview Generic Controller I/O Layout. See Wiring Diagram for application specific details. Application 6689 is the slave mode application for the BACnet PTEC Unit Conditioner Controller (550-433PA). Slave mode is the default application that comes up when power is first applied to the controller. Slave mode provides no control.
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Overview BACnet BACnet The controller communicates using BACnet MS/TP protocol for open communications on BACnet MS/TP networks.
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Overview Using Auxiliary Points Using Auxiliary Points It is possible to have extra points available in addition to the ones used by the current application that is running in the controller. These extra points must be controlled by PPCL in the PTEC controller or by the field panel.
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Overview Room Unit Operation Room Unit Operation Sensor Select SENSOR SEL is a configurable, enumerated point (values are additive). This point tells the controller what type of room unit is being used and how to handle loss of communication, for more information see Fail Mode Operation. It also provides the ability to enable the optional RH and CO2 sensors and indicates which thermistor type is connected.
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Overview PPCL STATUS Room RH RM RH displays the relative humidity value in percent. RM RH can be used for PPCL in the PTEC or unbundled for control or monitoring purposes. RM RH displays the relative humidity value in percent. Room DEW POINT The controller provides a calculation for DEW POINT temperature in Fahrenheit degrees (or Celsius degrees) using room temperature (using CLT TEMP) and room humidity (using RM RH). This calculation is valid for ranges of 55°F (12.
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Application 6689 Point Database Application 6689 Point Database Object Type1 Object Instance (Point Number) Object Name (Descriptor) Factory Default (SI Units)2 Engr Units (SI Units) Range Active Text Inactive Text AO 1 CTLR ADDRESS 255 -- 0-255 -- -- AO 2 APPLICATION 6689 -- 0-32767 -- -- AO 3 RMTMP OFFSET 0.0 (0.0) DEG F (DEG C) -31.75-32 -- -- AI {04} ROOM TEMP 74.0 (23.44888) DEG F (DEG C) 48-111.75 -- -- AI {13} RM STPT DIAL 74.0 (23.
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Application 6689 Point Database Object Type1 Object Instance (Point Number) Object Name (Descriptor) Factory Default (SI Units)2 Engr Units (SI Units) Range Active Text Inactive Text AO {78} CTL TEMP 74.0 (23.44888) DEG F (DEG C) 48-111.
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Issued by Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Pkwy Buffalo Grove IL 60089 Tel. +1 847-215-1000 Document ID 140-0960 Edition 2015-10-05 © Siemens Industry, Inc., 2015 Technical specifications and availability subject to change without notice.