• •

TAC MICROZONE II

Direct Digital Controllers

®

• Complete user creation of custom control strategies through block programming structure adapts MZII to virtually any HVAC control sequence or mechanical system.

• Models with battery backed-up time clock provide true stand-alone direct digital control with optimum start stop, scheduling functions, and battery backed-up random access memory (RAM).

• Input/output auto trending with adjustable sample rates continually accumulate and time stamp last 48 analog values and last 10 digital changes of state.

• Satellite point command capability from global controllers eliminates “waste” of unused points.

• “Fast” half (0.5) second input to output response times make MZII directly applicable to static pressure, fume hood and laboratory pressurization applications.

The TAC NETWORK 8000 MICROZONE II (MZII) is a fully programmable controller that enhances the TAC NETWORK 8000 Facility Management System family offering. The

MZII has the ability to employ custom block programs and run them in a stand-alone mode. The MZII block programming language provides the system operator with 100% flexibility for creation of new and unique control strategies.

TAC MICROZONE II is easily applied to a wide variety of mechanical equipment including those that are application specific. Through the Personal System Interface (PSI TM ) and

Xtended Personal System Interface (XPSI TM ), control programs can be downloaded to all devices requiring the sequence of operation. With the MZII, the TAC NETWORK 8000 provides the best of both worlds; full programmability for easy creation and modification of custom control strategies, and easy duplication of controller databases for mechanical equipment containing similar or identical control strategies.

The MZII utilizes state-of-the-art, surface mount technology which helps reduce the size and cost of the product while providing powerful product features. Modularity of hardware along with the networking capabilities allow easy expandability as the needs of the facility change in the future. As with all other programmable TAC NETWORK 8000 controllers, the MZII utilizes non-volatile EEPROM memory to store application control programs. EEPROM memory allows an owner to modify existing control sequences or create new ones through the Personal System Interface (PSI).

Communications

Ports

RS-485 asynchronous at 19,200 baud (adjustable) to global controller. Modular jack provided for local connection of the Personal System Interface.

Local Terminal (PSI)

PSI can monitor all device parameters and has access to all program blocks and attributes for complete program editing and creation. Provides up/download capability for system maintenance.

Network Device Access

PSI connected at one device has access to all network-wide devices on an ASD communication bus. Connection of PSI will not disrupt the network communications between the MZII controller and other devices on the bus.

TAC NETWORK 8000

Up to 128 MZIIs per Global Control Module. Shared network data includes all physical input/output points plus capability of WINDO and EMS blocks which are program definable.

2

Table-1 Model Chart.

Model Description

MZ2A-101

Controller card only

MZ2A-102

Battery

Backed-up Time Clock

No

Yes

• AO

• DO

• EMS

• HOLI

• LOOP

• OSS

• RESET

• RGRP

• SCHED

• SEQ

• UI

• UTIL

SOFTWARE SPECIFICATIONS

Control Functions

Refer to Table-2.

Table-2 TAC MICROZONE II Block Library.

Type Description

A

nalog Output

Digital Output

GCM™ Input

Holiday Schedule

Complex PID Loops

Optimum Start/Stop

Setpoint Reset

Receive Global Group Data

Weekly/Daily Schedule

Linear/Binary Sequencer

Universal Input

Utility: Counter, Drive, Flow Detect, Limit, Logic, Math,

Stop/Start, Process Alarm, Switch, High/Low, Pulse

Width Modulation, Thermostat, Status, Timer

Window Output to GCM

• WINDO

Accessories

AD-8969-101

AD-8969-202

AD-8969-206

AD-8961-220

AE-690

ENCL-MZ800-PAN

ENCL-MZ800-WAL

LAPT-80800-PSI

LAPT-80800-EPS-I

10 k ohm shunt resistor kit for high speed count input

250 ohm shunt resistor kit for 4 to 20 mA analog input

11 k ohm shunt resistor kit for 10 k thermistor sensor (non-

850 series)

Voltage divider (converts 1 to 11 Vdc signal to 0.5 to 5 Vdc signal)

Accessory outboard gear panel

10-7/8 H x 8-1/2 W x 4-1/4 D in. (276 x 216 x 108 mm) for direct nipple connection to MZ2-1E and MZ2-1CE

Enclosure, panel mount

10-5/8 H x 8-1/2 W x 4-1/8 D in. (270 x 216 x 105)

Enclosure, wall mount

10-7/8 H x 8-1/2 W x 4-1/4 D in. (276 x 216 x 108 mm)

TAC Personal System Interface software (see F-24317)

Xtended TAC Personal System Interface software

(see F-24317)

3

2

ASD Bus

Communications

Wiring

5.1 V Source (20 mA)

Universal Input or High

Speed (10 per second)

Pulse Counting Input

ASD Bus

Communication

Indication

RECEIVE (Yellow)

TRANSMIT (Green)

Universal Inputs

Analog Outputs

C

IN6

C

IN7

C

IN8

C

IN4

C

SHLD

SHLD

IN5

C

AO1

AO2

C

AO3

AO4

C

SHLD

PSI

5.1V

IN1

C

IN2

C

IN3

ASD-

ASD+

SHLD

TIE-

TIE+

Reset

Button

Status

(Red)

Address

Switch

ON OFF

Personal

System

Interface

Receptable

Figure-1 Terminal Connections and LED Indicators.

NO4

NC5

C5

NO5

NO2

NC3

C3

NO3

NC4

C4

NC1

C1

NO1

NC2

C2

NC6

C6

NO6

NC7

C7

NO7

NC8

C8

NO8

24H

24G

GND

Exhaust

Air (N.C.)

Outside

Air (N.C.)

Economizer

Damper Actuator

Enthalpy

Input

Device

Digital Outputs

*

DO Status (Red)

24 Vac Power

Supply Wiring

Return Fan

F

L

O

Return

Air (N.O.)

Mixed

Air

Filter

Mixed Air Temp.

Vortex

Damper

Actuator

Fan

On-Off

DP Across Air

Flow Station

C

L

G

Coil

Vortex

Damper

Actuator

Supply Fan

Fan

On-Off

F

L

O

CWR

CWS

DP

Across

Air

Flow

Station

Discharge

Air Temp.

Primary

Supply

Duct to VAV

Boxes

Static pressure sensor located

2/3 distance down the duct

Smoke

Detect

MZII

Occupancy

Output

(Lighting Enable)

Note: All field wiring shall be twisted, shielded pairs.

Figure-2 MZII Control Schematic of a Typical Fan Tracking VAV Air Handling System.

3

SPECIFICATIONS

MF2 SERIES

HARDWARE SPECIFICATIONS

Enclosure

Conforms to NEMA-1. UL-916 rated.

Power Supply Input

20.4 to 30.0 Vac, 50/60 Hz.

Maximum Power Consumption

20 VA at 50/60 Hz.

Transient Compliance Tests

ANSI C62.41 (IEEE 587), Categories A and B.

Electrostatic Discharge Test

±15 kV to case, ±5 kV to field wiring terminals.

AMBIENT LIMITS

Operating Temperature

UUKL Smoke Control

77 °F (25 °C) nominal.

PAZX Energy Management

-40 to 140 °F (-40 to 60 °C).

Shipping and Storage Temperature

-40 to 140 °F (-40 to 60 °C).

Humidity

5 to 95% RH, non-condensing.

Microprocessor

80C198, 7 MHz clock speed, 16-bit word size.

Memory

64 KB of EPROM, 2 KB of EEPROM, 8

KB of RAM.

Wiring Terminals

See Figure-1.

Battery Backup - Clock and RAM

30 days (replaceable lithium battery).

Battery Backed-up Time Clock

Accuracy ±150 sec./mo at 77 °F (25 °C).

Analog To Digital Conversion Resolution

10 bit.

Digital To Analog Conversion Resolution

10 bit.

Input to Output Response Time

0.5 seconds maximum.

UNIvERSAL INPUTS

Quantity

8.

Thermistor Input

20 to 140 °F (-6.67 to 60 °C) range.

TAC Barber-Colman TS-5700-850 series or equivalent.

Balco Input

-40 to 250 °F (-40 to 121 °C) range.

TAC Barber-Colman TS-8000 series or equivalent.

Copper Input

-31 to 240 °F (-35 to 116 °C) range.

TAC Barber-Colman TS-5600 series or equivalent.

Platinum Input

-40 to 240 °F (-40 to 116 °C) range.

TAC Barber-Colman TS-5800 series or equivalent.

Potentiometers

1000 to 20,000 ohm resistance.

voltage

0 to 5 Vdc.

Current

4 to 20 mAdc with 250 ohm shunt resistor.

Contact Input

Dry.

Maximum Pulse Count Rate

10 per second (50 msec. minimum On or Off time per pulse) to 1 per 4 minutes (1 input per MZII).

1 per second (0.5 sec. minimum On or

Off time per pulse) to 1 per minute (up to 7 inputs per MZII).

ANALOg OUTPUTS

Quantity:

4.

Type

0 to 20 mA range programmable source into 500 ohm maximum load, momentary short circuit protection.

DIgITAL OUTPUTS

Quantity:

8.

Contact Ratings

30 VA at 24 Vac, pilot duty.

120 VA at 120 Vac, pilot duty.

Contact Type

Form C (SPDT) isolated.

Status Indication

Light emitting diode.

voltage Reference

5.1 Vdc, 20 mA maximum.

Copyright © 2006, TAC

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.

TAC

1354 Clifford Avenue

PO Box 2940

Loves Park, IL 61132-2940

www.tac.com

F-24315-6