TAC INET MR-VAV-X1X2 VAV Controllers.EN.pdf

TAC I/NET M R-VAV-X X Series

Application Speciic

MicroRegulator ™

TAC’s MR-VAV-XX Series Application Speciic

MicroRegulator TM has an extensive range of pre-engineered

VAV control sequences which, combined with a fully

integrated airlow transducer, makes it a low “Total Installed

Cost” solution for most VAV terminal unit control applications

requiring an external actuator. An intelligent I/STAT TM

interface for independent local control and an interface to a

TAC I/NET TM Distributed Control System are

standard options.

M R-VAV-X X Series

Application Speciic MicroRegulator

Features

Operation

The MR-VAV-XX is the complimentary VAV

controller to the MR-VAV-AX except it has no

integral damper actuator. It has been designed for

applications requiring connection to a box-supplied

damper actuator. This controller has also been

designed to minimize the total installation, setup,

coniguration and commissioning costs typically

associated with VAV controllers.

PRoDuCT AT A GLANCE

MR-VAV-XX Features

• Fully Integrated Airflow Transducer(s) and

Controller in a single DIN rail mountable package

• Standalone and Networked Applications

• Extensive VAV Control Sequences:

– Single/Dual Duct

– Three Stage Heating, Multiple Modes

– Series/Parallel Fan

– Local/Remote occupancy override

– Local/Remote Central Plant Heat or Morning

Warm-up Control

– Local/Remote Shut Down override (fire,

failure, etc.)

– Indoor Air Quality Airflow Setpoint override

– Demand Control Setpoint override

– Minimum and Maximum Airflow Parameters for

both Heating and Cooling

• Complete “out-of-the-Box” Installation,

Configuration and Commissioning

– DIP Switch Configuration and Network

Addressing with Local/Remote override

– Automated Calibration of Airflow and

Temperature Sensors

– Autoconfiguration of Heating Stages

– “Prove It” function for Performance

Verification

– Automatic Database Distribution for

Networked Configurations

– Default Parameter Values

– Configuration and Commissioning from I/

STAT, M/STAT or PC

– Auto rescaling of velocity transducer(s) in low

flow application

– Self-Test Diagnostics

Installation costs have been reduced by totally

integrating the airlow transducer(s) and controller

into a single, plenum rated package that can be

mounted on a DIN rail.

Setup costs have been reduced by the provision of

DIP switches that can be set during installation and

before power is applied. Default parameters will

allow the controller to run immediately from startup

based on these switch settings.

The MR-VAV-XX is also supplied with an

extensive range of pre-engineered and tested

control sequences and therefore, no application

programming is required.

All coniguration parameters are pre-installed with

the most typical default values. However, they

can be overwritten either by a connected I/STAT,

an M/STAT (a portable I/STAT) or the Operator

Station PC. Heating stage setpoints, proportional

bands and delays are automatically calculated

and set in the controller based on the controller

setup selection.

Commissioning costs have been reduced

by the use of several automated processes.

Airlow conversion parameters are automatically

calculated once the box duct diameter and the

manufacturer’s K-factor are entered. By measuring

and entering the low and high airlow values for the

box, automatic calibration of the installed airlow

transducer is then performed.

Automated calibration of the temperature sensor

is also initiated once a measured value is entered

into the controller. A “Prove It” function allows a

Schneider Electric One High Street, North Andover, MA 01845 USA Telephone: +1 978 975 9600 Fax: +1 978 975 9674 www.schneider-electric.com/buildings

SDS-INET-VAV-X1-X2-A4.BU.N.EN.5.2006.0.00.CC

M R-VAV-X X Series

Application Speciic MicroRegulator

Features

connected Application Speciic MicroRegulators.

This database can also include a unique eight-

character name for each controller as part of each

point descriptor.

In a standalone coniguration, the controller

provides auxiliary inputs for VAV Shutdown (e.g.

ire alarm), Occupancy Override (e.g. Timer, Push-

button or Occupancy Sensor), and Central Plant

Heat or Morning Warm-Up Override (e.g. contacts

from a central plant).

PRoDuCT AT A GLANCE

(CoNTINuED)

• I/STAT and M/STAT Support Standard

– Local Display – 3 Digit & Decimal

– Local Point Control – Analog or Digital

– Local override & Setpoint Adjustment

– Service Mode for Commissioning and

Calibration

– user-Defined Passwords

• Slide/STAT Support Standard

– Slide Setpoint override

– occupancy override

– Integral Port for M/STAT Connection

• Inputs

– Airflow Transducer (one or two)

– Thermistor or Discrete (four)

• Low Voltage Triac outputs for

– Primary and Secondary Damper Actuators

– Series/Parallel Fan Control

– First Stage Heater Control

(Two Position, Frequency Modulated, Pulse

Width Modulated or Floating Control Modes)

– Second Stage Heater Control

(Two Position Control only)

– Third Stage Heater Control

(Two Position Control only)

In a network environment, these signals can be

provided locally for the standalone mode or via

the network. If these inputs are not used for local

override signals, then they can be designated as

“free” and used for any auxiliary input condition

monitoring desired in a networked environment

(e.g. supply air temperature). This is also applicable

to any unused outputs. They can become available

for control applications resident in the MCI or I/

SITE LAN (e.g. lighting control).

A networked environment of MR-VAV-XX

controllers can provide an extensive range of global

interlocks. These include Demand Mode setpoint

override, Central Plant Heat/Morning Warm-up,

Smoke Control (purge and isolate), Indoor Air

Quality (IAQ) Minimum Airlow setpoint override,

Temperature Setpoint override and Occupancy

override.

Also, the current damper actuator position is

continuously calculated and available as an Analog

Output value that is a percentage of full damper

stroke. This eliminates the need for expensive

feedback potentiometers and analog voltage

controlled (0-10Vdc) damper actuators. Also,

this analog output point can be overridden either

manually from an operator station or automatically

via an application program in the MCI or I/SITE LAN

and the actuator driven to any desired absolute

position.

complete veriication of the control sequence from

an I/STAT or M/STAT. Once initiated, the space

temperature is placed in Test Mode and can be

“increased” or “decreased” by the buttons on the I/

STAT. As the temperature value is changed through

the control range, the I/STAT displays the airlow

value and the state of the fan and auxiliary heating.

This allows conirmation of the thermodynamic

process from end to end. Finally, in a networked

environment, the database for the MicroController

Interface or an I/SITE LAN can be automatically

generated by an upload of all the data in the

The controller can also provide an analog value of

the current controller loading as a percentage value

of full load, for both cooling and heating modes.

This value can be used in the networked system

to provide an accurate signal to the central plant

controllers of actual system load requirements.

Schneider Electric One High Street, North Andover, MA 01845 USA Telephone: +1 978 975 9600 Fax: +1 978 975 9674 www.schneider-electric.com/buildings

SDS-INET-VAV-X1-X2-A4.BU.N.EN.5.2006.0.00.CC

M R-VAV-X X Series

Application Speciic MicroRegulator

Features

MR-VAV-XX

Model

Number Description

Comments

Connections

7716

Process Control unit,

8 uI, 8 Do (Relay),

24Vac

Baseplate

Mounted,

accommodates

the RS-232

Communications

Expansion Board,

and/or one of the

Point I/o modules

listed below.

MR-VAV-X1

Application Speciic

MicroRegulator,

1 I/STAT Port, 1

Integrated Airlow

Transducer, 4

Thermistor or

Discrete Inputs, 6

Low Voltage Triac

outputs, 24Vac

External Actuator

required

MR-VAV-X2

Application Speciic

MicroRegulator,

1 I/STAT Port, 2

Integrated Airlow

Transducers, 4

Thermistor or

Discrete Inputs, 6

Low Voltage Triac

outputs, 24Vac

External Actuator

required

TCoN155

Application Speciic

MicroRegulator

Installation Guide

MR-VAV-X1

TCoN156

Application Speciic

MicroRegulator

Installation Sheet

MR-VAV-X2

TCoN149

Application Speciic

MicroRegulator

Pocket Guide

MR-VAV

TCoN164

MR-VAV-X2

Installation/

Reference Guide

TCoN165

MR-VAV-X2

Installation Sheet

TCoN166

MR-VAV-X2 Pocket

Guide

Schneider Electric One High Street, North Andover, MA 01845 USA Telephone: +1 978 975 9600 Fax: +1 978 975 9674 www.schneider-electric.com/buildings

SDS-INET-VAV-X1-X2-A4.BU.N.EN.5.2006.0.00.CC

M R-VAV-X X Series

Application Speciic MicroRegulator

Speciications

Process Control unit

SOFTWARE

POINT CAPACITY:

20 resident points. Hardware (external)

points are a function of model selected,

and software (internal or indirect) points

activated. Indirect points are non-local

relections of any “global” point in the TAC I/

NET system.

INPUT/OUTPUT

SPACE SENSOR INPUT:

Supports I/STAT, Slide/STAT or

10K Ohm NTC Thermistor

(Dale 1M1002-C3)

Accuracy: 1°F (0.60°C)

Resolution: 0.32°F (0.18°C) @ 77°F (25°C)

INPUTS:

May be either thermistor or discrete contacts

per the following speciications.

ANALOG INPUTS:

10K Ohm NTC Thermistor

(Dale 1M1002-C3)

Accuracy: 1%

Resolution: 0.4% Span

A/D Digital Filtering: Median value ilter and

60 Hz notch ilter

Calibration Coeficients: Factory set in

NOVRAM, ield adjustable,

7 individual pairs.

DIGITAL INPUTS:

Dry contact input

Contact Excitation: 5V @ 0.5 mA

DISCRETE OUTPUTS:

Low Voltage Triac: 24Vac @ 0.5A max

(voltage sourcing), fused.

POINT SCAN INTERVAL:

1 – 255 seconds

VELOCITY PRESSURE INPUT:

Operating Range: 0.0 to 1.00 in. of W.C.

(0.0 to 250Pa)

Sensitivity: 0.0029˝ W.C. (0.73Pa) below

midscale and 0.0049˝ W.C. (1.10Pa) above

midscale.

Tubing Connections: Barb ittings for

0.170˝ (4.3 mm) I.D. FRPE polyethyl-

ene tubing or 0.25˝ O.D./0.125˝ I.D. (6.3

mm/3.2 mm) tygon tubing.

Tubing Length: 4 ft (1.2 m) maximum each

tube.

TERMINATIONS

TERMINAL BLOCKS:

Removable screw termina connectors

INDICATION

LEDs:

MR LAN activity (transmitting & receiving –

each channel), test mode (microprocessor

check, EPROM check, NOVRAM check)

DIP SWITCH

SW1 – 5:

Address (0 to 31)

SW6 – 12:

Function Selection

AGENCY APPROVALS

FCC Part 15

UL916 Energy Management Equipment

UL94-V0 Plenum Rated Enclosure

MICROREGULATOR INTERFACE

(MRI)

AVAILABLE PLATFORMS:

7792 MRI

7793 MCI

7798 I/SITE LAN

COMMUNICATION PORTS

MICROREGULATOR LAN:

RS-485, 9600 baud, asynchronous, polling

NETWORK WIRING REQUIREMENTS

MR LAN LENGTH:

5000 ft (1500 m)

CABLE SUPPORTED

Twisted pair, shielded. 24 AWG or larger, 30

pF/ft or less between conductors, 55 pF/ft

or less conductor to shield, 85 to 150 Ohm

impedance. Belden 9841 or equivalent.

PROCESSOR

PROCESSOR:

Zilog 86193

MEMORY

EPROM:

32KBytes

RAM:

464Bytes

NOVRAM:

4096Bytes.

PHYSICAL DECRIPTION

BASEPLATE AND COVER DIMENSIONS:

8.0˝ L x 4.3˝ W x 2.4˝ H

(196 mm x 105 mm x 61 mm).

DIN RAIL MOUNTING ON BASE ENCLO-

SURE:

PC/ABS plastic rated UL94-VO

POWER REQUIREMENTS:

24Vac, +10%, 50/60 Hz

(8VA, plus triac load, 4 amp fused)

OPERATING TEMPERATURE:

32°F to 122°F (0°C to 50°C)

OPERATING HUMIDITY:

10 – 90% RH, non-condensing

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.

Schneider Electric One High Street, North Andover, MA 01845 USA Telephone: +1 978 975 9600 Fax: +1 978 975 9674 www.schneider-electric.com/buildings

SDS-INET-VAV-X1-X2-A4.BU.N.EN.5.2006.0.00.CC

May 2006 gg

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