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TAC Vista
TAC Xenta® 122-FC
Flexible Control for Zone Applications
TAC Xenta 122-FC is an easily programmable controller intended for both 2-pipe and 4-pipe applications, with or without re-heat.
It can be configured for use with a multitude of valve actuator types, such as on/off, multistage, increase/decrease, PWM, and so
on. The controller has different types of fan control and advanced fan control functions, including on/off delays, boosting, and
conditioning.
The sequences for cooling, heating, and fan are completely user-programmable, allowing for numerous applications. For energy
savings the controller has built-in economizer functionality. Use TAC Xenta 122-FC with any TAC STR (1.8 kohm) room unit or I/A
10 kohm sensor.
The controller offers a comprehensive and flexible set of I/O-ports, making it ideal for many other applications provided for downloading.
Set-up is done using the programming tool TAC ZBuilder, which can be run stand-alone or together with either SmartStruxure, TAC
Vista® or an LNS-based tool. Using Vista or an LNS-based tool, the configuration settings are downloaded into a TAC Xenta 122,
prepared with the necessary basic application software.
The controller is a LonMark® compliant device aimed at communicating on a LonTalk® TP/FT-10 channel. It is able to operate both
as a stand-alone device and as part of a system. In- and output net work variables can be monitored via the TAC Xenta OP, but
programming relies on the use of the TAC ZBuilder.
TECHNICAL DATA
Supply Voltage
FC/24 .......................24 V AC ±20%, 50–60 Hz
FC/230 ......................230 V AC ±10%, 50–60 Hz
Power Consumption
Controller .....................................3 VA
Xenta OP (light on) ..............................1 VA
FC/24:
Triac Outputs...................max 4 x 19 VA = 76 VA
FC/230:
Triac Outputs, individually and total........... max 16 VA
.............(at nominal voltage with no OP connected)
Total power ............................ FC/24 = 84 VA
..................................FC/230 = 20 VA
Ambient Temperature
Operation ................0 °C to +50 °C (32 °F to 122 °F)
Storage ................ –20 °C to +50 °C (–4 °F to 122 °F)
Humidity ..................max. 90% RH non-condensing
Enclosure
Material................................ABS/PC plastic
Enclosure rating.................................IP 20
Flammability class, materials ...................UL 94 5VB
Color ...................................... gray/red
Dimensions, mm (in.)............. 122×126×50 (4.8x5.0x2)
Weight, kg (lb..) ....... FC/24: 0.3 (0.66), FC/230: 0.6 (1.3)
Inputs X1–X3, U1–U4 as digital input
Voltage across open contact .............23 V DC ± 1 V DC
Current through closed contact .................2.5 - 4 mA
Minimum pulse input duration . . . . . . . . . . . . . . . . . . . 250 ms
U1–U4 as temperature inputs
Thermistor types1.8 kW (Xenta)
10 kW (I/A)
Measuring range .........–10 °C to +50 °C (14 °F to 122 °F)
Accuracy .............................±0.2 °C (±0.4 °F)
U1–U4 as voltage inputs
Range ....................................0–10V DC
Accuracy ......................10 mV ± 0.5 % of reading
Input R1
Type ........................10 kW linear potentiometer
Adjustment range .................. software configurable
Triac Outputs V1–V4 for heating/cooling valve actuators, 24 V
AC Internally Supplied
Maximum load per output.......FC/24: 0.8 A, FC/230: 0.7 A
Total output load ..............FC/24: 3.2 A, FC/230: 0.7 A
Relay Outputs K1–K3
Maximum voltage ........................... 250 V AC
Maximum resistive load............................ 3 A
Relay Output K4
Maximum voltage .......FC/24: 24 V AC, FC/230: 250 V AC
Maximum resistive load........................... 12 A
Voltage Output Y1–Y3
Range ................................... 0–10 V DC
Accuracy .....................30 mV ± 0.5 % of set value
Maximum load .................................2 mA
Indication LED Colors
Power ........................................green
Service..........................................red
Interoperability
Standard ..................TAC Xenta 122-FC conforms to
Lo n Ma r k Interoperability Guidelines 3.4 and
Lo n Ma r k Functional Profile: 8501 SCC – Fan Coil
Communication protocol ........................LonTalk
Physical channel ......................TP/FT-10, 78 kbps
Neuron .................................... FT-5000
Agency Compliances
Product Standard ..........................EN 50491-1
Emission: CE ..........EN 50491-5-2, RCM, FCC 47/15/B/B
Immunity: CE............................EN 50491-5-3
Safety: CE ........ EN 50491-3, EN 60730-1, EN 60730-2-11
UL 916, C-UL US, Open Energy Management Equipment
(TAC Xenta 122-FC/24): ..Approved for plenum installations
Energy ............... eu.bac Certified Products 03-00147
RoHS directive............................ 2011/65/EU
Part Numbers
Contr Zone TAC Xenta 122-FC/24 .............007307110
Contr Zone TAC Xenta 122-FC/230 ............007307120
Manual ..................................0-004-7692
Plug-in Terminal Blocks TAC Xenta 100 ..........007309140
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APPLICATION EXAMPLES
7INDOWSENSOR
OR
SPEED&AN
7ALLMODULE
/CCUPANCYSENSOR
$ISCHARGEAIRSENSOR
2EHEATINGSTAGE
/UTSIDETEMPSENSOR
%CONOMIZER
(UMIDITYSENSOR
(EATINGCOIL #OOLINGCOIL
)NCRDECROR
THERMALACTUATORS
7INDOWSENSOR
OR
SPEEDFAN
7ALLMODULE
/CCUPANCYSENSOR
$ISCHARGEAIRSENSOR
2EHEATINGSTAGE
/UTSIDETEMPSENSOR
%CONOMIZER (EATING#OOLOINGCOIL
)NCRDECROR
THERMALACTUATORS
#/
SENSOR
7ATERTEMPSENSOR
-100 -83 -50 0
0 33 100
Fan
Primary Heating
Secondary Heating
Output
signal
Cooling
Terminal
Load
Control sequence fan coil (example)
TAC Xenta 122-FC can be programmed
to have up to two heating devices and
one cooling device. Each of these can be
a multistage, pwm, analog, or increase/
decrease device.
A Fan Coil unit can have a heating coil
and a cooling coil (4-pipe, Fig. 1a).
It can also be a combined cooling and
heating coil (2-pipe, Fig. 1b). For the
2-pipe application, a water temperature
sensor is required for crossover.
An electrical heater is common as the
second device.
The user defines the sequence; there are
no restrictions that a specific device be
activated first, in parallel, in series, or so
on.
Fan control outputs are always either a
multi stage output (1, 2, or 3 stages) or an
analog output.
Economizer control using an outside air
damper, as well as CO2 control and %RH
control are available.
When the temperature in the zone increa ses, the heating valve closes, see
Fig. 2. If there is still a cooling de mand,
the cooling valve opens and the fan
speed increa ses in steps until the highest
fan speed is reached.
This sequen ce is reversed when the temperature drops.
Figure 1a: Fan Coil unit, 4-pipe
Figure 1b: Fan Coil unit, 2-pipe
Figure 2
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CONTROL OPTIONS
The valve control options are as follows:
Analog, 0–10V
6-Way Control Valve
Control of heating and cooling using
one single 0-10V signal. The ranges for
cooling and heating are configurable. Alternatively, the change-over can be done
by means of a digital output.
Incr/Decr (3-point)
Pulse Width Modulation
One digital signal gives a modulating
signal by using a variable duty cycle.
Multistage
1–3 digital outputs are used to give up to
three levels of control. A special case of
this is one stage, which is just on/off.
General
For the different types of control, different set-ups like scaling or signal limitation
values, hysteresis, timing, and so on, can
be given.
Any type of control can be used with any
equipment, but some types are more suitable than others.
All control can be done either over physical outputs of the controller or on other
devices connected to the controller over a
LON® network.
Available I/O
3 digital inputs (X)
4 universal input (U): temperature, digital
or analog
1 pot.meter input (R): linear 10 kohm
4 Triac outputs (V): valve actuators or
other devices
4 relay outputs (K): Fan or other devices
3 analog outputs, 0-10 V (Y): analog or
LED
INSTALLATION
To satisfy regulatory safety requirements,
the controller must be built-in when line
voltage is connected.
It may be mounted on a DIN rail or
fastened onto a surface with screws.
There are two sockets provided for that
purpose.
Cable lengths
Communication cables: please refer to
the TAC Xenta Network Guide, part no.
0-004-7460.
CONFIGURATION OPTIONS
By selecting among the Configuration
Modules in the TAC ZBuilder, it is possible
to achieve diffe rent options in TAC Xen ta
122-FC for the following:
Space (Wall module) and outside tem-
perature sensors
Discharge (Supply) Air temperature sen-
sor
Water temperature sensor (2-pipe)
Setpoint adjustment
Outside air damper (Economizer control)
Relative Humidity sensors, space and
outside
Reversing valve
CO2 sensor
Bypass or On/Off button
Room temperature offset scaling
Occupancy sensor
Fan status
Window contact
Freeze protection
Alarm output
Main switch (for example, hotel room key)
TAC Xenta OP can be used to inspect nvi
and nvo values. Due to the many configuration possibilities, it cannot be used
to configure the controller.
OTHER FUNCTIONS
Exception Modes
Exception Mode is a common name for
all kinds of situations where normal control no longer can be used.
Up to eight different exception modes
can be configured.
Each mode will have its predefined values
on heating devices one and two, cooling
device, fan status, speed, and outside air
damper. If applicable, it can also be connected to a digital output.
Each of the eight exception modes has its
own indicator in nvoSystemStatus.
When the exception mode situation
clears, it is possible to configure if it is
allowed to go out of the exception mode
and, if so, the delay before normal control
is resumed.
Examples where exception modes are
useful:
Window contact
Main Switch
Smoke input
Freeze protection
Resync
All outputs configured as inc/dec outputs
will have a cyclic resync interval of 18 h.
Resync can also be initiated via
nviDOResync and is. It is configurable
to synchronize toward open or closed
position.
Installations Test – Checkout Mode
To facilitate the testing and installation,
it is possible to override the physical outputs. By setting a certain status override
SNVT, all outputs will be controlled by
the user, who can test them freely. No fan
interlock or other logical conditions will
be activated.
Forcing the Space temp makes it possible
to verify the sequence.
Unused Digital Inputs and Outputs
Some digital outputs will have a SNVT
input, which allows any other LON device
to control these digital outputs.
A condition is that the application is not
using the output. Some unused inputs
will have the same functionality, using a
SNVT output.
Not all digital inputs/outputs can have a
mirror SNVT, due to the limitation of the
SNVTs. If feasible, the same will be applied for analog in/outputs.
Flexible Combinations
By using TAC ZBuilder stand-alone on
a PC, you can easily explore the many
features and the great versatility of this
product.
Please refer to the TAC ZBuilder data
sheet 0-003-3010 for further details
about the easy way to program your
TAC Xenta 122.
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Lo n Ma r k OBJECTS AND NETWORK VARIABLES
1 - Space Comfort Control Fan Coil
Object Type: 8501
Mandatory
Network
Variables
Optional
Network
Variables
Configuration Properties
Manufacturer Defined Section
nvoFanSpeed
SNVT_switch
nvoSpaceTemp
SNVT_temp_p
nvoUnitStatus
SNVT_hvac_status
nvoEffectSetpt
SNVT_temp_p
nvoEffectOccup
SNVT_occupancy
nvoDischAirTemp
SNVT_temp_p
nvoTerminalLoad
SNVT_lev_percent
nvoHeatPrimay
SNVT_lev_percent
nvoHeatSecondary
SNVT_lev_percent
nvoCoolPrimary
SNVT_lev_percent
nvoOADamper
SNVT_lev_percent
nvoSpaceRH
SNVT_lev_percent
nvoSpaceCO2
SNVT_ppm
nvoEnergyHoldOff
SNVT_switch
nvoOutdoorRH
SNVT_lev_percent
nvoAlarmStatus
SNVT_state
nvoSystemStatus
SNVT_state
nvoWaterTemp
SNVT_temp_p
nvoOccSensor
SNVT_occupancy
nvoSetpntOffset
SNVT_temp_p
nvoRawDOStatus
SNVT_state
nvoGenericTemp
SNVT_temp_p
nvoGenericDI1
SNVT_switch
nvoGenericDI2
SNVT_switch
nvoGenericAI
SNVT_lev_percent
nvoSupplySetpt
SNVT_temp_p
nvoDehumidActive
SNVT_switch
nviSpaceTemp
SNVT_temp_p
nviSetpoint
SNVT_temp_p
nviSetPntOffset
SNVT_temp_p
nviOccManCmd
SNVT_occupancy
nviOccSensor
SNVT_occupancy
nviApplicMode
SNVT_hvac_mode
nviFanSpeedCmd
SNVT_switch
nviAuxHeatEnable
SNVT_switch
nviEnergyHoldOff
SNVT_switch
nviEmergOverride
SNVT_hvac_overid
nviSourceTemp
SNVT_temp_p
nviOutdoorTemp
SNVT_temp_p
nviSpaceRH
SNVT_lev_percent
nviOutdoorRH
SNVT_lev_percent
nviSpaceIAQ
SNVT_ppm
nviUnitOverride
SNVT_hvac_status
nviFanProof
SNVT_switch
nviDischAirTemp
SNVT_temp_p
nviEconMode
SNVT_switch
nviOAEnthalpy
SNVT_enthalpy
nviDOResync
SNVT_switch
nviOvrAO1
SNVT_lev_percent
nviOvrAO2
SNVT_lev_percent
nviOvrDO1
SNVT_switch
nviMainSwitch
SNVT_switch
nviDO1
SNVT_switch
nviDO2
SNVT_switch
nviCO2Setpoint
SNVT_ppm
(The Configuration parameters are all handled by ZBuilder.)
nvoEffSetptsHC
SNVT_temp_setpt
nvoRawDOStatus2
SNVT_state
nv1
nv2
nv3
nv6
nv7
nv8
nv10
nv12
nv14
nv17
nv18
nv19
nv20
nv21
nv28
nv26
nv27
nv29
nv33
nv34
nv37
nv38
nv39
nv40
nv42
nv43
nv46
nv49
nv44
nv22
nviOvrAO3
SNVT_lev_percent
Additionally, the following objects are used, all with their configuration parameters handled by TAC ZBuilder:
Config. Param. Description
20023 Application Object
20024 Control Object
20026 Fan Object
20028 I/O Object
20025 Temperature Control Device Object
20027 Exception Mode Object
Figure 3
Figure 4
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HARDWARE INTERFACE
mm (in.)
No. Designation Description
1 X2 Input, digital
2 U2 Universal input 2
3 X3 Input, digital
4 U4 Universal input 4
5 Y1 Analog output 1
6 Y2 Analog output 2
7 X1 Input, digital
8 R1 Input, setpoint offset dial on wall module
9 M Measurement neutral
10 U3 Universal input 3
11 K4 Output, relay 4
12 KC2 Relay 4, common
13 G0 or N See 14
14 G or L FC/24: 24V AC Supply
FC/230: Mains Supply
OP TAC Xenta OP RJ-10 access
connector
DIMENSIONS
No. Designation Description
15 C1 TP/FT-10 communication channel
16 C2 See above
17 Y3 Analog output 3
18 U1 Universal input 1
19 V1 Output, Triac 24 V AC
20 G 24 V AC (L) output for V1 and V2
21 V2 Output, Triac 24 V AC
22 V3 Output, Triac 24 V AC
23 G 24 V AC (L) output for V3 and V4
24 V4 Output, Triac 24 V AC
25 K3 Output, relay 3
26 K2 Output, relay 2
27 K1 Output, relay 1
28 KC1 Relay 1-3, common
Figure 5
ROOM UNITS
The STR is a series of wall modules optimized for public facilities such as office buildings, hotels, hospitals, schools and shopping malls.
The following room units can be configured with the TAC Xenta 122-FC.
Model Temp.
Sensor
Mode
Indicator
Setpoint
Offset
Bypass
Button
Fan
Speed
Control
Back
Light
SNVT
Binding
Required
STR100 X
STR101 X X
STR102 X X X
STR103 X X X
STR104 X X X X
STR106 X X X X X*
STR107 X X X X X**
STR150 X X X X X***
STR350 X X X X X*** X
STR351 X X X X X*** X X
* STR106 Fan speed: Auto-0-I-II-III
** STR107 Fan speed: Auto-Off-On
*** STR150, 350/351 Fan speed: configurable
PART NUMBERS
STR100 . . . . . . . . . . . . . . . . .004600100
STR100-W (White) ........004600110
STR101 . . . . . . . . . . . . . . . . .004600200
STR102 . . . . . . . . . . . . . . . . .004600300
STR103 . . . . . . . . . . . . . . . . .004600700
STR104 . . . . . . . . . . . . . . . . .004600400
STR106 . . . . . . . . . . . . . . . . .004600500
STR106-B ...............004600800
STR106-3 ...............004600900
STR107 . . . . . . . . . . . . . . . . .004600600
STR150 . . . . . . . . . . . . . . . . .004602800
LON Modules
STR350 . . . . . . . . . . . . . . . . .004605000
STR351 . . . . . . . . . . . . . . . . .004605100
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ENERGY CERTIFICATION
A TAC Xenta 122-FC/230 controller, connected to various field devices, forms a
system which is energy certified according
to the eu.bac regulation EN 15500.
All eu.bac certified products and peripheral
devices are found on the Eubac website.
For more information,
see www.eubaccert.eu
Copyright © 2008-2017, Schneider Electric
All brand names, trademarks and registered trademarks are
the property of their respective owners. Information contained
within this document is subject to change
without notice. All rights reserved.
03-00146-01-en Feb 2017
For more information visit
www.schneider-electric.com/buildings
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