TAC Xenta 102 User manual

Zone controller
TAC Xenta 102
Handbook
0-004-7516-1 (GB), 1999-08-18
TAC improves indoor climate
and reduces operating costs.
Heating
Air flow
Cooling
Cooling
demand
Changeover via
network variable

TAC AB, 1999-08-18
TAC Xenta 102 Handbook Foreword
0-004-7516-1 (GB), i (ii)
Foreword
This is the technical handbook for the TAC Xenta 102 controller, a
zone controller for VAV applications in offices and other larger
buildings.
In this second edition of the handbook, sections that were earlier
complicated to the user, have been made clearer, and most of the
content has been reorganized. The trouble-shooting section has been
made into its own chapter, and there are now appendices in the end of
the handbook; one containing setpoint calculating examples, and one
containing a commissioning protocol which can be used together with
chapter 3 when commissioning.
The programs in TAC Xenta 102 now have new versions. For both the
system program and the application program in the controller, the
versions are 1.10. If there is a service replacement in the system, all
variable bindings—if the controller is run on a network—must be
remade when an older or newer version of the controller is fitted. This
is because the controller has got a new “Standard Program ID”. There
are also three new network variables.

TAC AB, 1999-08-18
TAC Xenta 102 Handbook Foreword
ii (ii), 0-004-7516-1 (GB)
Revisions list
Part number Comment Editor Date
0-004-7516-0 First edition. KRRO 1997-09-11
0-004-7516-1 Second edition. System and application program in a new SUWA 1999-08-18
version 1.10.
Copyright © 1999 TAC AB
ThisdocumentcontainsinformationwhichisthepropertyofTACandisthereforeonlyavailableforthoseusingandmaintainingTAC’sequipment.Disclosure,
reproductionoruseofeitherthedocumentortheinformationwithinforanyotherpurposearestrictlyprohibited.
TACreservstherighttomakenecessarychangesofandadditionstothematerial.
Echelon,Lon,LonWorks,LonTalk,Neuron,3150,LonMarkandtheLonMarklogoareregisteredtrademarksforEchelonCorporation,USA.TAC Xenta®isa
registeredtrademarkforTACABinSwedenandothercountries.Allothertrademarksarethepropertyoftheirrespectiveowners.

TAC AB, 1999-08-18
TAC Xenta 102 Handbook Contents
0-004-7516-1 (GB), 1 (2)
Zone controller TAC Xenta 102
Handbook
Reservations for changes.
Contents
1 Introduction .................................................................................................................. 1:1
1.1 Thecontentofthehandbook ............................................................................................................... 1:1
1.2 Documentation .................................................................................................................................... 1:2
1.3 Terminology ........................................................................................................................................ 1:3
2 The zonecontrollerTACXenta102 ............................................................................ 2:1
2.1 General ................................................................................................................................................ 2:1
2.2 Wallmodules ....................................................................................................................................... 2:3
2.3 Applications ......................................................................................................................................... 2:4
2.3.1 General ............................................................................................................................................... 2:4
2.3.2 Air flow control only (TAC Xenta 102-B) ........................................................................................ 2:4
2.3.3 Air flow control with modulating valve reheat (TAC Xenta 102-VF) ................................................ 2:5
2.3.4 Air flow control with modulating valve water reheat and fan (TAC Xenta 102-VF) .................... 2:5
2.3.5 Air flow control with one stage electric reheat (TAC Xenta 102-EF)............................................. 2:6
2.3.6 Air flow control with one stage electric reheat and fan (TAC Xenta 102-EF) ............................... 2:6
2.3.7 Air flow control with thermo-actuator for radiators (TAC Xenta 102-EF)................................... 2:7
3 Installation .................................................................................................................... 3:1
3.1 Mechanicalinstallation....................................................................................................................... 3:1
3.1.1 Fitting.................................................................................................................................................. 3:1
3.2 Electricalinstallation.......................................................................................................................... 3:3
3.2.1 General ............................................................................................................................................... 3:3
3.2.2 Wiring of TAC Xenta 102-B ............................................................................................................. 3:5
3.2.3 Wiring of TAC Xenta 102-EF .......................................................................................................... 3:6
3.2.4 Wiring of TAC Xenta 102-VF .......................................................................................................... 3:7
3.3 Commissioning ................................................................................................................................... 3:8
3.3.1 General ............................................................................................................................................... 3:8
3.3.2 Node status .......................................................................................................................................... 3:8
3.3.3 Configuration parameters (nci’s)...................................................................................................... 3:9
3.3.4 Network installation......................................................................................................................... 3:10
3.3.5 Network variable binding................................................................................................................ 3:10
3.3.6 Function test ..................................................................................................................................... 3:10
4 Configurationparameters ............................................................................................ 4:1
4.1 Basicparameters ................................................................................................................................ 4:2
4.2 Otherconfigurationparameters......................................................................................................... 4:3

TAC AB, 1999-08-18
TAC Xenta 102 Handbook Contents
2 (2), 0-004-7516-1 (GB)
5 Functionaldescription................................................................................................. 5:1
5.1 General ................................................................................................................................................ 5:1
5.2 The controller’sbasic functions ......................................................................................................... 5:2
5.2.1 Operation modes ................................................................................................................................ 5:2
5.2.2 Operation mode, manual mode and emergency mode.................................................................... 5:4
5.2.3 Measuring zone temperature ............................................................................................................ 5:5
5.2.4 Setpoint calculation ........................................................................................................................... 5:6
5.2.6 Control sequence with TAC Xenta 102-B ......................................................................................... 5:8
5.2.5 Control sequence with TAC Xenta 102-EF and 102-VF .................................................................. 5:8
5.3 Moreaboutfunctions......................................................................................................................... 5:10
5.3.1 Air flow control ................................................................................................................................ 5:10
5.3.2 Heating and fan control ................................................................................................................... 5:11
5.3.3 Air quality control ........................................................................................................................... 5:12
5.3.4 Window contact ................................................................................................................................ 5:13
5.3.5 Occupancy sensor ............................................................................................................................ 5:13
5.3.6 Minimum value for heating valve (TAC Xenta 102-VF only) ...................................................... 5:14
5.3.7 Alarm................................................................................................................................................ 5:15
5.3.8 Master/slave operation.................................................................................................................... 5:16
6 Trouble-shooting........................................................................................................... 6:1
6.1 General ................................................................................................................................................ 6:1
6.2 Inputsandoutputs(nvi/nvo’s).............................................................................................................. 6:2
6.3 Problemsandsolutions ....................................................................................................................... 6:3
7 Technicaldata............................................................................................................... 7:1
7.1 Technicaldata...................................................................................................................................... 7:1
7.2 Dimensions.......................................................................................................................................... 7:3
7.2.1 With semi-protection ......................................................................................................................... 7:3
7.2.2 Without semi-protection .................................................................................................................... 7:3
8 Communication ............................................................................................................. 8:1
8.1 General ................................................................................................................................................ 8:1
8.2 Defaultsettingsandpoweron ............................................................................................................. 8:1
8.3 Monitoringnetworkvariables,Heartbeat ........................................................................................... 8:2
8.4 Notacceptedvalues.............................................................................................................................. 8:3
8.5 Thenodeobject .................................................................................................................................... 8:3
8.5.1 The node object’s inputs (nvi) ............................................................................................................ 8:3
8.5.2 The node object’s outputs (nvo) ......................................................................................................... 8:4
8.5.3 The node object’s configuration parameters (nci) ........................................................................... 8:4
8.6 Thecontrollerobject ........................................................................................................................... 8:4
8.6.1 The controller object’s inputs (nvi) ................................................................................................... 8:6
8.6.2 The controller object’s outputs (nvo) ................................................................................................ 8:7
8.6.3 The controller object’s configuration parameters (nci) .................................................................. 8:8
AppendixA:Setpointcalculation
AppendixB:Commissioningprotocol
Index
Replyform

TAC AB, 1999-08-18 0-004-7516-1 (GB), 1:1 (4)
TAC Xenta 102 Handbook About this handbook
1 Introduction
1.1 The content of the handbook
•Chapter 1 Introduction,
gives an overview over the structure of this handbook,
additional information about the product, and has a short
terminology section.
•Chapter 2 The zone controller TAC Xenta 102,
briefly describes the wall module, the controller’s functions
and control examples of the three different models of TAC
Xenta 102.
•Chapter 3 Installation,
contains instructions on mechanical and electrical
installation of the controller, and instructions on
commissioning and network installation.
•Chapter 4 Configuration parameters,
describes the setting of the zone controller’s configuration
parameters.
•Chapter 5 Functional description,
gives detailed information about the zone controller’s basic
functions, operating modes, and other functions.
•Chapter 6 Trouble-shooting during operation and
commissioning,
contains trouble-shooting measures you can use to find and
remedy possible faults in the system.
•Chapter 7 Technical data,
lists all technical data and dimensions for TAC Xenta 102.
•Chapter 8 Communication,
describes the zone controller’s communication with other
units via the network by means of network variables.
•Appendix A, Setpoint calculation
contains calculating examples for the setpoint calculation in
chapter 5.
•Appendix B
contains a commissioning protocol, which can be used
together with chapter 3 during installation and
commissioning.

1:2 (4), 0-004-7516-1 (GB) TAC AB, 1999-08-18
TAC Xenta 102 Handbook About this handbook
•Index and Reply form,
are in the end of the handbook. Use the index to make your
search for information easier, and the reply form to let us
know whether there is something wrong or unclear in this
handbook.
1.2 Documentation
Enclosed documentation
TAC Xenta 102 is delivered with an installation instruction for
each of the controllers below:
•TAC Xenta 102-B,
Installation instruction, part number 0FL-3857
•TAC Xenta 102-EF,
Installation instruction, part number 0FL-3859
•TAC Xenta 102-VF,
Installation instruction, part number 0FL-3861
Other documentation
There is additional information about TAC Xenta 102 in the
following documents:
•Data sheet for TAC Xenta 102-B,
part number 0-003-1611
•Data sheet for TAC Xenta 102-EF,
part number 0-003-1617
•Data sheet for TAC Xenta 102-VF,
part number 0-003-1623
•Data sheet for ZS 101–ZS 105,
part number 0-003-1661. Here the wall modules are described.
•TAC Xenta Network Guide,
part number 0-004-7460. Here you can find additional infor-
mation on network installation.
•TAC Xenta OP Handbook,
part number 0-004-7506. Here you find information on how to
use TAC Xenta OP together with TAC Xenta 102 and the wall
modules.
•TAC Xenta, Zone System Guidelines
part number 0-004-7637. Here you find information on how a
zone system is built with TAC Xenta components.
•TAC Xenta 102 Handbook,
part number 0-004-7516-0. Here you find information on the
earlier version of the zone controller.
All the above mentioned documents can be found on the internet:
www.tac.se or they can be ordered from the nearest TAC service
point.

TAC AB, 1999-08-18 0-004-7516-1 (GB), 1:3 (4)
TAC Xenta 102 Handbook About this handbook
1.3 Terminology
In this handbook there are some abbreviations and terms which
are specific for the zone controller’s applications and network
communication. Therefore, the most common terms have been
gathered, together with a short explanation, in the list below.
neuron..................communication processor with built-in
protocol
node .....................communication unit on the network
SNVT ...................Standard Network Variable Type
nvixxx..................variable which gets its value from another
unit on the network
nvoxxx .................variable which value is sent out to another
unit on the network
ncixxx..................configuration parameter; variable which gets
its value from another unit on the network
and which keeps it during a power failure
service pin ...........function which can be used during installation
on the network
wink .....................confirmation that the connection to a controller
via the network is working (a light emitting
diode is lit for appr. 15 seconds)
LNS ......................LonWork Network Services. System tool for
installation, configuration and maintenance of
LonWorks network

1:4 (4), 0-004-7516-1 (GB) TAC AB, 1999-08-18
TAC Xenta 102 Handbook About this handbook
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