MicroTech II®
Applied
Self-Contained Unit Controller
LONWORKS® Communication Module
Space Comfort Controller (SCC) Module
Discharge Air Controller (DAC) Module
Rooftop Unit Controller and
NOTICE
Group: Controls
Part Number: IM 702
Date: August 2007
Supersedes: IM 702-3
Use this manual to physically install the McQuay MicroTech II Communication Module into the
rooftop or self-contained unit controller and connect the unit controller to your network. Use the
appropriate McQuay Engineering Data (ED), known as the Protocol Information document, to
integrate the unit into your network. The Protocol Information document contains addressing
details, L
See the Reference Documents section of this manual for Protocol Information document
numbers. MicroTech II control integration literature is available from your local McQuay
International sales representative and
Recognize Safety Symbols, Words and Labels .................................................................................................................. 5
GENERAL INFORMATION ................................................................................................................................................ 6
COMPONENT DATA ................................................................................................................................................................ 7
Service Pin ........................................................................................................................................................................ 7
INSTALLATION AND NETWORK CONNECTION........................................................................................................ 9
General ............................................................................................................................................................................. 9
CONFIGURING THE UNIT CONTROLLER ................................................................................................................................ 18
Factory-Installed LONWORKS Communication Modules.............................................................................................. 18
Field-Installed LONWORKS Communication Modules.................................................................................................. 18
Important Notes............................................................................................................................................................... 18
SERVICE INFORMATION ................................................................................................................................................ 20
McQuay International reserves the right to change any information contained herein without prior notice. The user is
responsible for determining whether this product is appropriate for his or her application.
The following are trademarks or registered trademarks of their respective companies. Windows from Microsoft
Corporation; BACnet from ASHRAE; LONWORKS from Echelon Corporation; McQuay, MicroTech II from McQuay
International.
Revision History
IM 702 Initial release
IM 702-4 Clarified equipment required and commissioning steps.
ONWORKS Communication Module Major Components ------------------------------------------------- 7
Reference Documents
Number Company Title Source
IM696 McQuay International MicroTech II® Applied Rooftop Unit Controller
OM137 McQuay International MicroTech II Applied Rooftop Discharge Air
OM138 McQuay International MicroTech II Applied Rooftop Space Comfort
IM710 McQuay International MicroTech II Vertical Self-Contained Unit
OM711 McQuay International MicroTech II Vertical Self-Contained Discharge Air
OM712 McQuay International MicroTech II Vertical Self-Contained Space Comfort
ED15060 McQuay International MicroTech II Protocol Information Data for McQuay
ED15061 McQuay International MicroTech II Protocol Information Data for McQuay
notice. The user is responsible for determining whether this software is appropriate for his or her
application.
®™ The following are tradenames or registered trademarks of their respective companies. BACnet
from the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.; L
and LONMARK from Echelon, Inc.; Windows from Microsoft Corporation; McQuay and MicroTech II
from McQuay International.
www.mcquay.com.
ONWORKS
4 IM702-4
Introduction
Recognize Safety Symbols, Words and Labels
The following symbols and labels are used throughout this manual to indicate immediate or potential hazards. It is the
owner and installer’s responsibility to read and comply with all safety information and instructions accompanying these
symbols. Failure to heed safety information increases the risk of property damage and/or product damage, serious personal
injury or death. Improper installation, operation and maintenance can void the warranty.
! CAUTION
Hazards or unsafe practice CAN result in property damage, product damage, severe
personal injury and or death.
NOTICE
Hazards or unsafe practices, which CAN result in property, damage, product damage, and
or personal injury.
IM702-4 5
General Information
This manual contains the information you need to install the MicroTech II® LONWORKS® Communication Module to a
MicroTech II rooftop or self-contained unit controller, incorporate it into the network, and maintain it.
! WARNING
Electric shock hazard. Can cause personal injury or equipment damage.
This equipment must be properly grounded. Connections and service to the MicroTech II control panel must be
performed only by personnel who are knowledgeable in the operation of the equipment being controlled.
! CAUTION
Static sensitive components. Can cause equipment damage.
Discharge any static electrical charge by touching the bare metal inside the control panel before performing any
service work. Never unplug cables, circuit board terminal blocks, or power plugs while power is applied to the panel.
NOTICE
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with this instruction manual, may cause interference to radio communications. It has been tested and found to comply
with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his or her own expense. McQuay International disclaims any liability resulting
from any interference or for the correction thereof.
Description
A MicroTech II LONWORKS Communication Module provides the interface between a MicroTech II unit controller and a
L
ONWORKS Local Operating Network (LON). It translates the LonTalk
in the unit controller and vice versa. Two versions are available: one in accordance with the LonMark
Control (SCC) Functional Profile and one in accordance with the LonMark Discharge Air Control (DAC) Functional
Profile. Profiles are interpreted in loaded programs (firmware). Each profile is interpreted in a separate MicroTech II
ONWORKS Communication Module. This manual covers both the SCC and DAC functional profiles.
L
Each MicroTech II L
ONWORKS Communication Module is a printed circuit board that plugs onto the MicroTech II unit
controller. Figure 1 is an outline drawing with dimensions of a printed circuit board.
Figure 1. MicroTech II L
3.750
ONWORKS COMMUNICATION MODULE
®
variables used on the network to the variables used
®
Space Comfort
0.250
6 IM702-4
0.250
6.750
Application
12
The MicroTech II LONWORKS Communication Module connects the MicroTech II rooftop or self-contained unit controller
to the Building Automation System (BAS) on a L
variables between the network and the unit controller. The MicroTech II LonWorks Communication Module translates the
ONWORKS variables of the profile into the native information of the unit controller. Figure 2 shows the MicroTech II
L
ONWORKS Communication Module and unit controller integrated into a BAS. Refer to the appropriate Unit Operation
L
manual for keypad details (see Reference Documents section).
Figure 2. Building Automation System
ONWORKS network. It is the interface adapter for the exchange of LonTalk
LonWorks
FTT-10A
Network
MicroTech II
Main Control
Board
MicroTech II
LonWorks
Communications
Module
MicroTech II
Keypad
LonWorks W ork Station
LonWorks
Interface
Adapter
Component Data
Figure 3 shows the location of the major components of the MicroTech II LONWORKS Communication Module.
Figure 3. MicroTech II L
ONWORKS Communication Module Major Components
-Pin Header
Service Pin
SW1
J6
DS1
DS2
DS3
P8
Light Emitting Diodes
3
12
P8 Connector
Service Pin
The service pin, switch SW1, generates a service pin message, which contains the Neuron ID and the program code
identification of the node. A service pin message is a network message that is generated by a node and broadcast on the
network. It can be used to commission the L
IM702-4 7
ONWORKS network.
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