ABB SLTA Option Card Serial LonTalk Datasheet download pdf (Page 63)

Zone Controllers

TAC Xenta 121-FC

Programmable Fan Coil Controller

TAC Xenta 121-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, etc. 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 program-

mable, allowing for numerous different applications. For energy savings the

controller has built-in economizer functionality. Use TAC Xenta 121-FC with

any TAC STR room unit.

Set-up is done using the programming tool TAC ZBuilder, which can be run

stand-alone or as a device plug-in to either TAC Vista or LNS. The conﬁgura-

tion settings are downloaded into a TAC Xenta 120, prepared with the neces-

sary basic application software.

The controller is a L

o n Ma r k

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. Input and output network variables can be monitored

via the TAC Xenta OP, but programming relies on the use of the TAC ZBuilder.

FUNCTIONAL FEATURES

• The controller is designed for

both 2 and 4 pipe installations

• Multi-functional Heating and

Cooling: heating, cooling and

secondary heating

• Multi-stage Fan Control:

up to three stages or analog

speed control

• Indoor Air Quality Control:

full support for CO

and RH

(Relative Humidity) functions

• Exception modes take care of

abnormal conditions like fire

or risk of frost

• Configurable In- and Outputs:

all inputs and outputs are con-

figurable to minimize installa-

tion cost

SPECIFICATIONS

Operating voltage

FC/24 . . . . . . . . . . . . . . . . . . . 24 V AC ±20%, 50–60 Hz

FC/230 . . . . . . . . . . . . . . . . . . 230 V AC ±10%, 50–60 Hz

Power consumption . . . . . . . . . 5 VA

Dimensions . . . . . . . . . . . . . . . 126x122x50mm(5”x4.8”x2”)

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 rating . . . . . . . . . . . . IP 30

Digital inputs . . . . . . . . . . . . . . 3, (X1-X3) NO/NC

Thermistor inputs . . . . . . . . . . . 2, (B1-B2) NTC 1.8 kohm at 25°C (77°F)

Universal input . . . . . . . . . . . . . 1, (U1), conﬁgurable as thermistor, digital

or analog input

Potentiometer input . . . . . . . . . 1, (R1) 10 kohm

Triac outputs . . . . . . . . . . . . . . 4, (V1-V4) 24 V AC Intern. supplied

Relay outputs . . . . . . . . . . . . . . 3, (K1-K3) 250 V AC, 3A

Relay output . . . . . . . . . . . . . . 1 (K4) FC24 24 V AC, FC230 250VAC, 3A

Voltage output . . . . . . . . . . . . . 1 (Y1) 0-10 V DC

DESCRIPTION

0-073-0621-0 Contr Zone TAC Xenta 121-FC/24

0-073-0622-0 Contr Zone TAC Xenta 121-FC/230

0-073-0914-0 LNS Plug-in

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