Siemens BACNET 125-699 User Manual
Siemens BACnet Heat
Pump Controller – MultiStage Owner’s Manual
125-699 Rev. BA, July 2009
Siemens Building Technologies, Inc. i
Rev. BA, July 2009
NOTICE
The information contained within this document is subject to change without notice and should not be construed as a
commitment by Siemens Building Technologies, Inc. Siemens Building Technologies, Inc. assumes no responsibility
for any errors that may appear in this document.
All software described in this document is furnished under a license and may be used or copied only in accordance
with the terms of such license.
WARNING
This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance
with the instructions manual, may cause interference to radio communications. It has been tested and found to
comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against such interference when operated in a commercial environment. Operation of
this equipment in a residential area is likely to cause interference in which case users at their own expense will be
required to take whatever measures may be required to correct the interference.
SERVICE STATEMENT
Control devices are combined to make a system. Each control device is mechanical in nature and all mechanical
components must be regularly serviced to optimize their operation. All Siemens Building Technologies branch offices
and authorized distributors offer Technical Support Programs that will ensure your continuous, trouble-free system
performance.
For further information, contact your nearest Siemens Building Technologies, Inc. representative.
Copyright 2009 by Siemens Building Technologies, Inc.
TO THE READER
Your feedback is important to us. If you have comments about this document, please contact your local Siemens
Building Technologies representative.
CREDITS
Product or company names mentioned herein may be the trademarks of their respective owners
Pirnted in the U.S.A.
Table of Contents
How to Use This Manual ............................................................................................... III
Manual Organization .................................................................................................. III
Manual Conventions .................................................................................................. III
Manual Symbols ........................................................................................................ IV
Getting Help ............................................................................................................... IV
Product Overview ......................................................................................................... 1
Introduction ................................................................................................................... 1
Ordering Notes........................................................................................................... 1
Hardware Inputs ........................................................................................................ 2
Analog ..................................................................................................................... 2
Digital ...................................................................................................................... 2
Hardware Outputs ...................................................................................................... 2
Analog ..................................................................................................................... 2
Digital ...................................................................................................................... 3
Power Wiring ........................................................................................................... 3
Communication Wiring ............................................................................................ 3
Controller LED Indicators ........................................................................................... 4
Temperature Sensors ................................................................................................ 4
Room Temperature Sensor ..................................................................................... 4
Mixed Air Temperature Sensor ............................................................................... 4
Actuators .................................................................................................................... 4
Related Equipment .................................................................................................. 5
Applications ................................................................................................................... 7
Basic Operation ............................................................................................................. 7
Control Temperature Setpoints.................................................................................. 7
Day/Night Mode ......................................................................................................... 7
Night Mode Override Switch ...................................................................................... 7
Control Loops ............................................................................................................. 7
Mixed Air Control Loop ............................................................................................ 7
Calibration .................................................................................................................. 8
Heating and Cooling Switchover ............................................................................... 9
Electric Reheat ........................................................................................................... 9
Siemens Building Technologies, Inc. I
Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual
Compressor Operation .............................................................................................. 9
Fan Operation ............................................................................................................ 9
Power Failure Recovery ............................................................................................ 10
Centralized Alarm Monitoring .................................................................................... 10
Overriding DOs .......................................................................................................... 10
Fail-safe Operation .................................................................................................... 10
Using Auxiliary Points ................................................................................................ 11
Application 2583: Multiple Compressor Heat Pump with Reversing Valve Control and
Mixed Air Control .......................................................................................................... 12
Compressor Staging .................................................................................................. 12
Reversing Valve Operation ........................................................................................ 12
Application Notes ....................................................................................................... 12
Application 2584: Multiple Heating and Cooling Heat Pump with Mixed Air and Internal
Reversing Valve Control............................................................................................... 14
Compressor/Electric Heat Staging ............................................................................ 14
Application Notes ....................................................................................................... 14
Application 2590: BACnet Heat Pump Slave Mode ................................................... 16
Using the Controller as a Point Extension Device ..................................................... 16
Point Database .............................................................................................................. 18
Overview ........................................................................................................................ 18
Troubleshooting ............................................................................................................ 28
Basic Service Information .......................................................................................... 28
Preventive Maintenance ............................................................................................ 28
Safety Features .......................................................................................................... 29
Controller LEDs.......................................................................................................... 29
Glossary ......................................................................................................................... 30
Overview .................................................................................................................... 30
Index ............................................................................................................................... 34
II Siemens Building Technologies, Inc.
How to Use This Manual
This manual is written for the owner and user of the Siemens Building Technologies, Inc.
Heat Pump Controller—Multi-Stage, often referred to as controller for the remainder of this
manual. This manual is designed to help you become familiar with the controller and its
applications.
This chapter covers manual organization, manual symbols and conventions used in the
manual, and how to access help.
Manual Organization
This manual contains the following chapters:
• Chapter 1 Product Overview, describes the hardware components and accessories
used with the controller.
• Chapter 2 Applications, describes the control applications available in the controller.
• Chapter 3 Point Database, defines the point database descriptors and includes
addresses and applications.
• Chapter 4 Troubleshooting, describes basic corrective measures to take should you
encounter a problem when using this controller. For issues not covered in this
chapter, contact your local Siemens Building Technologies representative.
• A Glossary describes the terms and acronyms used in this manual.
• An Index is provided to assist you in finding information.
Manual Conventions
The following table lists conventions used in this manual.
Convention Example
Actions that you should
perform are specified in
boldface font.
Error and system
messages are displayed
in Courier New font.
Type F for Field panels.
Click OK to save changes and close the dialog box.
The message Report Definition successfully renamed
appears in the status bar.
New terms appearing for
the first time are
italicized.
Siemens Building Technologies, Inc. III
The Open Processor continuously executes a user-defined set of
instructions called the control program.
Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual
Manual Symbols
The following table lists symbols that are used to draw your attention to important
information.
Notation Symbol Meaning
CAUTION:
WARNING:
Getting Help
For more information about the Siemens BACnet Heat Pump Controller—Multi-Stage,
contact your local Siemens Building Technologies representative.
Indicates that equipment damage or loss of data may occur
if the user does not follow a procedure as specified.
Indicates that personal injury or loss of life may occur to the
user if a procedure is not performed as specified.
IV Siemens Building Technologies, Inc.
1
Product Overview
Introduction
The Siemens BACnet Heat Pump Controller—Multi-Stage is used in multiple compressor
heat pump applications. lt provides Direct Digital Control (DDC) for two heat pump
applications. The controller can operate as an independent, stand-alone DDC room controller
or it can be networked with a field panel.
The controller provides all termination, input/output, system, and local communication
connections (Figure 1). The controller hardware consists of the controller with cover and
mounting bracket.
Table 1. Siemens BACnet Heat Pump Controller – Multi-Stage Applications.
Application
Number
2583 Multiple Compressor with Reversing Valve and Mixed Air Control
2584 Multiple Heating and Cooling with Internal Reversing Valve
and Mixed Air Control
2590 Slave Mode
Application Description
Ordering Notes
Siemens BACnet Heat Pump Controller – Multi-Stage 550-490
Siemens Building Technologies, Inc. 1
Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual
COVER
DO 2
DO 1
DO 3
DO 4
DO 5
24 V-AC
C H GND
RX
TX
BST
FLN TRUNK
+-
-
+
NO C
NO C
NO C
NO C
NO C
DO 7
DO 6
NO C
NO C
0
NO C
AI 3
AI 4
+ -
+ -
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 161 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4
+ -
1 2 1 2 3 4 5 6 7 8 9 101 2 3 4 5 6 7 8 9 1 11 12 13 14 15 16
AO 3AO 2AO 1DI 6DI 2AI 5DO 8
+ -+ -+ -
RTS
CONTROLLER
BOARD
MOUNTING
HOLE
(2)
MOUNTING
RAIL
POWER
TRUNK
TERMINATIONS
TEC04XXR1
FLN TRUNK
TERMINATIONS
RECEIVE LED, TRANSMIT LED, AND BST LED
Hardware Inputs
Analog
• Mixed air temperature sensor (optional)
• Room Temperature Sensor (RTS)
• Room temperature setpoint dial (optional)
Digital
• Heat pump alarm (optional)
DO LEDS
INPUT / OUTPUT TERMINATIONS
Figure 1. Siemens BACnet Heat Pump ControlIer—Multi-Stage.
ROOM TEMPERATURE
SENSOR / HMI PORT
• Night mode override (optional)
• Wall switch (optional)
Hardware Outputs
Analog
• Damper actuator (spring return) (optional)
2 Siemens Building Technologies, Inc.
Product Overview
Digital
Power Wiring
• Compressor 1
• Compressor 2 (optional); or stage 3 electric heat (optional)
• Compressor 3 (optional); or stage 2 electric heat (optional)
• Stage 1 electric heat (optional)
• Reversing valve
• Damper actuator (floating control) (optional)
• Fan
• Stage 1 cooling compressor (optional)
• Stage 2 cooling compressor (optional)
• Stage 1 heating compressor (optional)
• Stage 2 heating compressor (optional)
Application
2583
2583
2583
2583, 2584
2583
2583, 2584
2583, 2584
2584
2584
2584
2584
The controller is powered by 24 Vac. Power wiring connects to terminals on the controller
labeled “C” (Common) and “H” (Hot). An earth ground termination is also present. See Figure
3.
Communication Wiring
The controller connects to the field panel by means of a Field Level Network (FLN) trunk. See
Figure 4.
POWER TRUNK
C H EGRND WHEN THIRD TER-
MINA TION IS PRESENT
24 V COMMON
24 V HOT
TEC0471R2
Figure 3. Power Wiring. Figure 4. Communication Wiring.
E GRND
3-WIRE FLN TRUNK
TWISTED PAIR
SHIELD
TEC0528R1
WIRENUT
REFERENCE (EQUIPOTENTIAL)
GROUNDED AT SINGLE LOCATION
TYPICALLY AT FIELD PANEL
REFERENCE CONNECTION ABSENT
IF 2-WIRE CABLE MUST BE USED
REFERENCE
IS NOT SHIELD
Siemens Building Technologies, Inc. 3
Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual
Controller LED Indicators
The controller has several Light Emitting Diode (LED) indicators. (Figure 1). Table 2 lists the
LED types and what they indicate.
Table 2. Controller LEDs.
LED Type Label
(if present)*
DO LED 1–LED 8 Indicates the ON/OFF status of the DO associated with it. A
Receive RX Indicates , when flashing, that the controller is receiving
Transmit TX Indicates, when flashing, that the controller is transmitting
Basic Sanity
Test
* Some LED labels may be hidden by the controller cover.
BST Indicates, when flashing ON and OFF once per second, that
Temperature Sensors
An electronic Room Temperature Sensor (RTS) or an optional auxiliary temperature sensor
may be used with the Siemens BACnet Heat Pump Controller—Multi-Stage.
Room Temperature Sensor
The controller room temperature sensor connects to the controller by means of a cable
preterminated at both ends with a 6-conductor RJ-11 plug-in connector. See Figure 1 for the
location of the RTS/Human-Machine lnterface (HMl) port.
Indication
glowing LED indicates that the DO is energized.
information from the field panel.
information to the field panel.
the controller is functioning properly.
Mixed Air Temperature Sensor
The mixed air temperature sensor is a 10K Ω thermistor that connects to the controller at Al
5.
For more information about Siemens temperature sensors, contact your local Siemens
Building Technologies representative.
Actuators
The actuator used with the Siemens BACnet Heat Pump Controller—Multi-Stage may be an
optional floating control or 0 to 10V spring return electronic damper motor that is powered
through the controller to position an outside air damper.
For more information about Siemens actuators, contact your local Siemens Building
Technologies representative.
4 Siemens Building Technologies, Inc.
Related Equipment
• Relay Module
• Damper Actuator(s)
• Mixed Air Temperature Sensor (optional)
• Room Temperature Sensor
Contact your local Siemens Building Technologies, Inc. representative for product numbers
and more information.
Product Overview
Siemens Building Technologies, Inc. 5
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