Schneider Electric TAC Xenta 401:B Data Sheet

TAC Vista

2 3 4 5 6 7 8 10

12 13 14 15 16 17 18 20

48 – 0.5

(1.89–0.02)

70 – 2.0

(2.75–0.08)10.1

(0.40)

4 (0.16)

90 (3.55)

110 (4.33)

77.4

(3.05)

45

(1.77)

TAC Xenta 401:B

Controller, Freely Programmable

TAC Xenta 401:B belongs to a family of freely programmable controllers, with communi cation features, designed for heating and
air handling systems.

A TAC Xenta 401:B holds full HVAC functionality including control loops, curves, time control, alarm handling, etc. The controller
does not have any physical inputs or outputs and no TAC Xenta 400 I/O modules can be connected.

This controller may serve as a data manager that can provide time scheduling, data logging, and other logical functions to less ca­pable network nodes.

With the TAC Menta programming tool, a TAC Xenta controller is simple to program and place into operation.

The controller communicates on a LonTalk TP/FT-10 network via a twisted-pair, non-polarized cable. It is able to operate both as a
stand-alone unit and as part of a system.

TAC Xenta 401:B can be connected to a modem or the TAC Vista Building Management System.

The controller can be removed/inserted from/to the terminal part without disconnecting the power supply. When adding or replacing
a controller it’s also possible to pre-configure it in order to achieve Plug and Play functionality without any on-site configurations.

For local use, the TAC Xenta OP (Operator Panel) can be connected. The operator panel has a display and push buttons for
navigating and altering settings. The operator panel can be snapped onto the TAC Xenta controller unit, mounted on the front of
the cabinet, or used as a portable terminal.

TECHNICAL DATA

Supply voltage..... 24 V AC ±20%, 50/60 Hz or 19–40 V DC

Power consumption.......................... max. 2 W

Transformer sizing ...............................2 VA

Ambient Temperature

Storage ...............–20 °C to +50 °C (–4 °F to +122 °F)

Operation .............±0 °C to +50 °C (+32 °F to +122 °F)

Humidity ..................max. 90% RH non-condensing

Mechanical

Enclosure....................................ABS/PC

Enclosure rating.................................IP 20

Flammability class, materials ...................UL 94 5VB

Dimensions ................................ see Fig. 1

Weight ................................ 0.5 kg (1.2 lb)

CPU

CPU....32 bit, 12.28 MHz, 2 MB flash memory, 128 kB SRAM

Real Time Clock

Accuracy at +25 °C (77 °F) ............±12 minutes per year

Power outage protection ...........................72 h

Communication

TAC Menta; modem ..............9600 bps, RS-232, RJ-45

TAC Vista ......................TP/FT-10, screw terminal

(also for application program download)

TAC Xenta OP....................TP/FT-10, modular jack

LonMark Standard

Interoperability ...........LonMark Interop. Guidelines v 3.0

Application ......LonMark Functional Profile: Plant Controller

Agency Compliances

Emission:

CE ..................EN 61000-6-3, C-Tick, FCC Part 15

Immunity:

CE ..................................EN 61000-6-1

Safety:

CE ....................................EN 61010-1

UL 916, C-UL US, Enclosed Energy Management Equipment
Approved for plenum installations

RoHS directive............................ 2002/95/EG

Part Numbers

Electronics part TAC Xenta 401:B...............007301030

Terminal part TAC Xenta 400..................007309020

Operator panel TAC Xenta OP ................007309072

TAC Xenta: Programming Serial Kit .............007309200

Figure 1

03-00010-03-en

2

03-00010-03-en

DESIGN

The TAC Xenta 401:B controller has been
designed as a general purpose controller.
It is normally mounted in a cabinet with
several controllers collected per floor or
per building.

The large network variable input capacity
makes TAC Xenta 401:B well suited for
zone system management applications.

TAC Xenta 401:B is microprocessor based.
It consists of a terminal and electronics
mounted together (Fig. 2).

TAC Xenta 401:B can, via network
variables, be interfaced with other LON­based field sensors/transducers and
controlled devices.

The 401:B does not, however, support
TAC Xenta I/O modules.

Local Operator Panel

The TAC Xenta OP (Operator Panel) is a
small operator panel which can be con­nected to the unit through its enclosure.
The operator can read the point status,
perform manual override, read measured
values, alter set points etc., from the
operator panel.

The functions are selected from menus.
Access to the unit is enabled by using an
access code. It is possible to access other
TAC Xenta units on the same network.

Power Outage Protection

With non-volatile (flash) memory, the
unit will start up with user settings and
work normally after a power outage.

Real Time Clock

The real time clock provides data such as
year, month, date, day, hour, minute and
second. A built-in capacitor maintains op­eration of the clock for at least 72 hours
in the event of a power outage.

Daylight Saving Time:
European, Australian or USA/Canada

Once set, Daylight Saving Time (DST) is
fully automatic. The change-over date
and the number of hours to change are
programmable. This function can also be
disabled.

Figure 2

LonWorks SNVT Support

The use of Standard Network Variable
Types (SNVT), in accordance with the
Echelon specification, makes it possible to
communicate with nodes made by other
manufacturers.

SOFTWARE FEATURES

With the assistance of TAC Menta,
a graphical programming tool using
Functional Block Diagrams (FBDs), the
TAC Xenta 401:B may be easily adapted
to different control and monitoring tasks.

The basic functions available with this
controller include:

• alarmhandling,alarmconditionsmay

be detected via LonWorks Network
variables

• equipmentruntimetotalsonselected

objects

• programsforoptimumstart/stop

• controlcharacteristiccurves

• PIDcontrolloops(loopsmaybecon-

nected in cascade)

• trendloggingforupto50channels

• localleveloperatorinterfacevia

TAC Xenta OP (Operator Panel)

• networkcommunicationaccordingto

the LonTalk protocol

• communicationwiththeTACVista

Building Management System via mo­dem

The basic software is adapted to the
current application by connecting pre­programmed functional blocks and by
adjusting the relevant parameters. These
connections and parameters are stored in
non-volatile memory.

The parameters may be changed dur­ing ongoing operation either from the
TAC Vista Building Management System
or locally from the TAC Xenta OP
(Operator Panel).