Schneider Electric TAC Xenta 122-FC Data Sheet

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 types1.8 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

03-00146-01-en

2

03-00146-01-en

APPLICATION EXAMPLES

7INDOWSENSOR

OR

SPEED&AN

7ALLMODULE

/CCUPANCYSENSOR

$ISCHARGEAIRSENSOR

2EHEATINGSTAGE

/UTSIDETEMPSENSOR

%CONOMIZER

(UMIDITYSENSOR

(EATINGCOIL #OOLINGCOIL

)NCRDECROR
THERMALACTUATORS

7INDOWSENSOR

OR

SPEEDFAN

7ALLMODULE

/CCUPANCYSENSOR

$ISCHARGEAIRSENSOR

2EHEATINGSTAGE

/UTSIDETEMPSENSOR

%CONOMIZER (EATING#OOLOINGCOIL

)NCRDECROR
THERMALACTUATORS

#/



SENSOR

7ATERTEMPSENSOR

-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