BACnet PTEC Controller Dual Duct Two Air Velocity Sensors Owner's Manual 125-5069 2014-09-03 Building Technologies
Table of Contents How To Use This Manual .................................................................................................. 4 Chapter 1 – Product Overview ......................................................................................... 6 Hardware Inputs .................................................................................................................. 7 Hardware Outputs ...................................................................................................
How To Use This Manual How To Use This Manual This manual is written for the owner and user of the Siemens BACnet PTEC Dual Duct 2 AVS Controller. It is designed to help you become familiar with the Siemens BACnet PTEC and its applications. This section covers manual organization, manual conventions, symbols used in the manual, and other information that will help you use this manual.
How To Use This Manual Convention Examples This symbol signifies Notes. Notes provide additional information or helpful hints. Cross references to other information are For more information on creating flowcharts, see indicated with an arrow and the page Flowcharts [→92]. number, enclosed in brackets: [→92] Placeholders indicate text that can vary based on your selection. Placeholders are specified by italicized letters, and enclosed with brackets [ ]. Type A C D H [username] [field panel #].
Chapter 1 – Product Overview Hardware Inputs Chapter 1 – Product Overview The Siemens BACnet PTEC Dual Duct 2 AVS Controller is the Siemens Industry FLN controller used in pressure independent Variable Air Volume and Constant Volume applications. It provides Direct Digital Control (DDC) for a number of applications. The controller can operate as an independent, stand-alone, DDC room controller or it can be networked with a field panel.
Chapter 1 – Product Overview Hardware Inputs Hardware Inputs Analog Air velocity sensor (two required) Application 6665 Application 6666 Application 6667 Application 6668 Application 6669 Duct temperature sensor (100K or 10K thermistor software selectable) (optional) Application 6669 Room temperature sensor Application 6665 Application 6666 Application 6667 Application 6668 Application 6669 Room temperature setpoint dial (optional) Application 6665 Application 6666 Application 6667 Application 6668
Chapter 1 – Product Overview Hardware Outputs Hardware Outputs Analog Spare analog output (three) (0-10Vdc) Application 6665 Application 6666 Application 6667 Application 6668 Application 6669 Digital Damper actuator (two required) Application 6665 Application 6666 Application 6667 Application 6668 Application 6669 Autozero module (two) (optional) Application 6665 Application 6666 Application 6667 Application 6668 Application 6669 Stage 1 electric heat (optional) Application 6665 Application 6666 Ap
Chapter 1 – Product Overview Ordering Notes Ordering Notes Siemens BACnet PTEC Dual Duct 2 AVS Controller 550-497PA Siemens BACnet PTEC Dual Duct 2 AVS Controller. Power Wiring The controller is powered by 24 Vac. Power wiring connects to the three screw terminals on the controller board labeled “C” (Common), “H” (Hot), and “E” (Earth Ground) on the terminal block labeled “24 Vac”. Communication Wiring The controller connects to the field panel by means of a Floor Level Network (FLN) trunk.
Chapter 1 – Product Overview Controller LED Indicators Controller LED Indicators NOTE: The TX and RX LEDs indicate communication over the FLN. To determine if the controller is powered up and working, verify that the Basic Sanity Test (BST) Light Emitting Diode (LED) is flashing ON/OFF once per second. The controller has eleven Light Emitting Diode (LED) indicators (see Figure Siemens BACnet PTEC Dual Duct 2 AVS Controller).
Chapter 1 – Product Overview Actuators Room Temperature Sensor The room temperature sensor connects to the controller by means of a cable terminated at both ends with a six-conductor RJ-11 plug-in connector. See the Ordering Notes section for the location of the room temperature sensor/Human Machine lnterface (HMl) port. Duct Temperature Sensor An optional duct temperature sensor provides duct air temperature sensing inputs to the controller.
Chapter 2 – Applications Basic Operation Chapter 2 – Applications Basic Operation The Siemens BACnet PTEC Dual Duct 2 AVS Controller provides Direct Digital Control (DDC) for Constant Volume (CV) or Variable Air Volume (VAV) applications. Control Temperature Setpoints The controller maintains a specified temperature setpoint based on Day/Night mode, the heating/cooling mode, or the setpoint dial (if used).
Chapter 2 – Applications Basic Operation Notes 1. If the temperature swings in the room are excessive, or if there is trouble in maintaining the setpoint, contact your local Siemens Industry representative for more information. 2. The Siemens BACnet PTEC Dual Duct 2 AVS Controller, as shipped from the factory, keeps all associated equipment OFF. The controller and its equipment are released to application control at start-up. 13 Siemens Industry, Inc.
Chapter 2 – Applications Application 6665 Constant Volume Two Inlet Sensors with Optional Reheat Application 6665 Constant Volume Two Inlet Sensors with Optional Reheat In Application 6665, the controller provides independent control of the hot duct and cold duct inlet dampers to provide a constant volume of air to the space during occupied periods and a lower constant volume of air during unoccupied periods.
Chapter 2 – Applications Application 6666 Constant Volume One Inlet and One Outlet Sensor with Optional Reheat Application 6666 Constant Volume One Inlet and One Outlet Sensor with Optional Reheat In Application 6666, the controller provides independent control of the hot duct and the cold duct inlet dampers to provide a constant volume of air to the space during occupied periods and a lower constant volume of air during unoccupied periods.
Chapter 2 – Applications Application 6667 VAV - Two Inlet Sensors with Optional Reheat Application 6667 VAV - Two Inlet Sensors with Optional Reheat In Application 6667, the controller modulates two inlet damper actuators–one for the hot duct and one for the cold duct. In cooling mode, the controller modulates the cold duct damper to maintain the room temperature setpoint and modulates the hot duct damper to ensure minimum airflow.
Chapter 2 – Applications Application 6668 VAV - One Inlet and One Outlet Sensor with Optional Reheat Application 6668 VAV - One Inlet and One Outlet Sensor with Optional Reheat In Application 6668, the controller provides independent control of the hot duct and the cold duct inlet dampers to provide variable air volume control to modulate the cold and hot duct dampers via two flow sensors-one in the cold duct and one in the common discharge duct.
Chapter 2 – Applications Application 6669 VAV with Changeover Application 6669 VAV with Changeover In Application 6669, in cooling mode, the controller provides independent control of the hot duct and the cold duct inlet dampers to provide variable air volume control to modulate the cold duct damper to maintain the room temperature setpoint and the hot duct damper to ensure minimum flow. Under severe cooling loads, the hot duct can be operated as a secondary cold duct.
Chapter 2 – Applications Application 6693 Dual Duct 2 AVS Slave Mode Application 6693 Dual Duct 2 AVS Slave Mode Application 6693 is the slave mode application for the BACnet PTEC (see Ordering Notes for product numbers). Slave mode is the default application that comes up when power is first applied to the controller. Slave mode provides no control.
Chapter 3 – Point Database Chapter 3 – Point Database Chapter 3 presents a description of the Siemens BACnet PTEC Dual Duct 2 AVS Controller point database, including point descriptors, point addresses, and a listing of applications in which each point is found. Descriptor Address1 Application Description CTLR ADDRESS 01 All Identifies the controller on the LAN trunk. APPLICATION 02 All Identification number of the program running in the controller. HOT.
Chapter 3 – Point Database Descriptor Address1 Application RM STPT MAX 12 6665-6669 The maximum temperature setpoint in degrees that the controller can use from the setpoint dial. This overrides any temperature setpoint from the setpoint dial that falls above this maximum. RM STPT DIAL {13} All The temperature setpoint in degrees from the room temperature sensor (not available on all temperature sensor models).
Chapter 3 – Point Database Descriptor Address1 Application Description while in heating mode. When HTG LOOPOUT is above this value, then the reheat modulates upward. REHEAT END 23 6667-6669 Determines how the reheat modulation will be sequenced while in heating mode. When HTG LOOPOUT is below this value, then the reheat modulates downward. DI 2 {24} All Actual status of a contact connected to the controller at DI 2. ON indicates that the contact is closed; OFF indicates that the contact is open.
Chapter 3 – Point Database Descriptor Address1 Application Description the cooling air duct. CLG FLO COEF 36 6665-6669 Calibration factor for the cold duct airflow sensor. FLOW COEFF 1 36 6693 Calibration factor for air flow 1. MTR3 COMD 37 6693 The value to which the Motor 3 actuator is commanded in percent of full travel. VALVE COMD {37} 6665-6669 The value to which the valve actuator is commanded in percent of full travel for applications using a water valve.
Chapter 3 – Point Database Descriptor Address1 Application MTR1 CMD {48} 6693 The value to which the Motor 1 actuator is commanded in percent of full travel. CLG DMP POS {49} 6665-6669 The current position of the damper motor in percent of full travel. This value is calculated based on motor run time. MTR1 POS {49} 6693 The current position of Motor 1 in percent of full travel. This value is calculated based on motor run time. See MTR1 TIMING.
Chapter 3 – Point Database Descriptor Address1 Application Description depending on duct shape and size. It is used in calculating all points in units of CFM, CF, LPS, and L. TOTDUCT AREA 60 6666,6668 Area, in square feet (square meters), of the volume duct where the air velocity sensor is located. This value is calculated by the portable operator’s terminal or by the field panel depending on duct shape and size. It is used in calculating all points in units of CFM, CF, LPS, and L.
Chapter 3 – Point Database Descriptor Address1 Application Description HTG LOOPOUT {80} 6665-6669 The heating temperature control loop output value in percent. AVG HEAT OUT {81} 6665-6669 This point is used to determine what stages of electric heat are used for a given loop output value. The ranges for the value are determined by the number of stages used: 0 to 100 for 1 stage of electric heat, 0 to 200 for 2 stages of electric heat, and 0 to 300 for 3 stages of electric heat.
Chapter 3 – Point Database Descriptor Address1 Application CAL SETUP 95 All The configuration setup code for the calibration sequence options. CAL TIMER 96 All Time interval, in hours, between the calibration sequence initiations if a timed calibration option is selected in CAL SETUP. CLGDUCT AREA 97 6665-6669 Area, in square feet (square meters), of the cooling duct where the air velocity sensor is located.
Chapter 3 – Point Database Descriptor Address1 Application Description the communication failure uniquely. This is an indicator for the occupant to know that there is a communication problem between the controller and room unit. RM CO2 {125} All This point may be used in a control strategy as occupancy increases (CO2 levels increase) in the room being controlled. RM RH {126} All This point may be used in a control strategy as humidity levels varies in the room being controlled.
Chapter 4 – Basic Service and Maintenance Basic Service Information Chapter 4 – Basic Service and Maintenance This chapter describes basic service and maintenance measures you can take when using a BACnet PTEC. You may want to contact your local Siemens Industry representative if a problem occurs or you have any questions about the controller. NOTE: When troubleshooting, record the problem and what actions were performed immediately before the problem occurred.
Chapter 4 – Basic Service and Maintenance Safety Features Safety Features The controller board stores the controller's address, applications, and point values. In the event of a power failure or a reset, these values are retrieved from the controller's permanent memory and are used by the controller unless overridden by a field panel. If one of the following conditions occurs, the controller will activate safety features present in its fail-safe mode. Sensor failure. Loss of power.
Glossary Glossary This glossary contains the collected terms and acronyms that are used in Siemens BACnet PTEC and TEC Controllers. For definitions of point database descriptors, see Chapter 3 - Point Database, in this manual. airflow Rate at which a volume of air moves through a duct. Usually expressed in cubic feet per minute (cfm) or liters per second (lps). algorithm Mathematical formula and control logic that uses varying inputs to calculate an output value. AVS Air Velocity Sensor.
Glossary Demand Control Ventilation A control algorithm that provides for the control or reduction of outdoor air intake below design rates when the actual occupancy of spaces served by the system is at less than design occupancy. DCV Demand Control Ventilation. DDC Direct Digital Control. Direct digital control The automated control of a condition or process by a digital device (computer). DO Digital Output. Physical output point that sends a two-state signal (ON/OFF, OPEN/CLOSED, YES/NO).
Glossary HMI Human Machine Interface. Terminal and its interface program that allows you to communicate with a field panel or equipment controller. Occupancy sensor A control device that detects presence of people in a space by using infrared or ultrasonic technology. Occupancy sensors are used to save energy by controlling lighting and temperature and, along with CO2 sensors, to provide control input of demand control ventilation (DCV) algorithms.
Glossary UI Universal Input. Can be used as an AI or DI. An AI input is a point receiving a signal that represents a condition that has more than two states. A DI input is a physical input point that receives a two-state signal. unbundle Term used to describe the entering of a point that resides in a controller's database into the field panel's database so that it can be monitored and controlled from the field panel. VAV Variable air volume.
Index Index A actuators, 11 damper actuator, 11, 12 valve actuator, 11 algorithm, 31 application, slave mode overview, 19 applications calibration, 12, 23 control temperature setpoints, 12 fail-safe operation, 12 notes, 13, 13 occupied/unoccupied mode, 12 unoccupied mode override switch, 12 B basic operation, 12 Basic Sanity Test (BST), 10 basic service information, 29 BST LED, 10 C calibration, 12 centralized control, 31 Chilled Beam, 31 CO2, 31 control loop, 31 controller LEDs/LED indicators, 10 Ter
Index SI units, 33 slave mode, 33 slave mode application, 19 stand-alone, 6 stand-alone control, 33 static discharge, 29 T temperature sensor, 10 temperature sensors duct temperature sensor, 10, 11 room temperature sensor, 10 RTS, 11 Terminal Box (VAV) Controller product overview, 6 troubleshooting basic service information, 29 TX LED, 10 U unbundle, 34 Unit Conditioner Controller calibration, 12 units, English, 32 36 Siemens Industry, Inc.
Issued by Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Pkwy Buffalo Grove IL 60089 Tel. +1 847-215-1000 Document ID 125-5069 Edition 2014-09-03 © 2014 Copyright Siemens Industry, Inc. Technical specifications and availability subject to change without notice.
