Installation and Maintenance Manual

IM 702-4 Group: Controls Part Number: IM 702 Date: August 2007 Supersedes: IM 702-3

MicroTech II® Applied Rooftop Unit Controller and Self-Contained Unit Controller LONWORKS® Communication Module Space Comfort Controller (SCC) Module Discharge Air Controller (DAC) Module

NOTICE 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, LONWORKS® protocol information, and a list of the data points available to the network. 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 www.mcquay.com.

© 2007 McQuay International

Contents Notice ................................................................................................................................................................................ 3 Revision History................................................................................................................................................................ 3 Reference Documents........................................................................................................................................................ 3 Limited Warranty .............................................................................................................................................................. 4 INTRODUCTION ...................................................................................................................................................................... 5 Recognize Safety Symbols, Words and Labels .................................................................................................................. 5 GENERAL INFORMATION ................................................................................................................................................ 6 APPLICATION ......................................................................................................................................................................... 7 COMPONENT DATA ................................................................................................................................................................ 7 Service Pin ........................................................................................................................................................................ 7 Light Emitting Diodes (LEDs) .......................................................................................................................................... 8 LONWORKS Network Connector (P8) ................................................................................................................................ 8 12-Pin Header................................................................................................................................................................... 8 LonMark Profile Software................................................................................................................................................. 8 Neuron............................................................................................................................................................................... 8 Transceiver ....................................................................................................................................................................... 8 Specifications .................................................................................................................................................................... 8 INSTALLATION AND NETWORK CONNECTION........................................................................................................ 9 General ............................................................................................................................................................................. 9 Required Equipment.......................................................................................................................................................... 9 Mounting a new MicroTech II LONWORKS Communication Module .............................................................................. 9 Replacing a MicroTech II LONWORKS Communication Module ..................................................................................... 9 INTEGRATION.................................................................................................................................................................... 14 NETWORK CONNECTION ...................................................................................................................................................... 14 Network Topology ........................................................................................................................................................... 14 Free Topology Networks ................................................................................................................................................. 14 Free Topology Restrictions ............................................................................................................................................. 15 Doubly Terminated Networks ......................................................................................................................................... 15 Doubly Terminated Topology Restrictions...................................................................................................................... 15 Physical Network ............................................................................................................................................................ 16 ADDRESSING AND ESTABLISHING COMMUNICATIONS ......................................................................................................... 17 External Interface File (XIF) .......................................................................................................................................... 17 CONFIGURING THE UNIT CONTROLLER ................................................................................................................................ 18 Factory-Installed LONWORKS Communication Modules.............................................................................................. 18 Field-Installed LONWORKS Communication Modules .................................................................................................. 18 Important Notes............................................................................................................................................................... 18 SERVICE INFORMATION ................................................................................................................................................ 20 TROUBLESHOOTING ............................................................................................................................................................. 20 REPLACEMENT PARTS .......................................................................................................................................................... 20

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Figures Figure 1. MicroTech II LONWORKS COMMUNICATION MODULE---------------------------------------------------------------------- 6 Figure 2. Building Automation System ---------------------------------------------------------------------------------------------------- 7 Figure 3. MicroTech II LONWORKS Communication Module Major Components ------------------------------------------------- 7 Figure 4. MicroTech II Applied Rooftop Unit Controller Main Control Board ----------------------------------------------------10 Figure 5. LONWORKS Network Connection Schematic Diagram ---------------------------------------------------------------------11 Figure 6. Mount LONWORKS Communication Module ---------------------------------------------------------------------------------11 Figure 7. Cable Harness Routing - Applied Rooftop Unit -----------------------------------------------------------------------------12 Figure 8. Cable Harness Routing - Self-Contained Unit-------------------------------------------------------------------------------13 Figure 9. Singly Terminated Free Topology Networks---------------------------------------------------------------------------------14 Figure 10. Combining Network Segments With a Repeater ---------------------------------------------------------------------------15 Figure 11. Doubly Terminated Network Topology -------------------------------------------------------------------------------------15

Notice © 2007 McQuay International, Minneapolis MN. All rights reserved throughout the world. 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.

Reference Documents Number

Company

IM696

McQuay International

OM137

McQuay International

OM138

McQuay International

IM710

McQuay International

OM711

McQuay International

OM712

McQuay International

ED15060

McQuay International

ED15061

McQuay International

078-0014-01E

LonMark Interoperability Assoc. LonMark Interoperability Assoc. LonMark Interoperability Assoc. LonMark Interoperability Assoc. Echelon Corporation

078-0120-01E 8500_10 8610_10 078-0156-01G

IM702-4

Title

Source

MicroTech II® Applied Rooftop Unit Controller Installation Manual MicroTech II Applied Rooftop Discharge Air Controller Operation Manual MicroTech II Applied Rooftop Space Comfort Controller Operation Manual MicroTech II Vertical Self-Contained Unit Controller Installation Manual MicroTech II Vertical Self-Contained Discharge Air Controller Operation Manual MicroTech II Vertical Self-Contained Space Comfort Controller Operation Manual MicroTech II Protocol Information Data for McQuay International Applied Rooftop Units MicroTech II Protocol Information Data for McQuay International Self-Contained Units LonMark® Layers 1-6 Interoperability Guidelines, Version 3.0 LonMark Application Layer Interoperability Guidelines, Version 3.2 LonMark Functional Profile: Space Comfort Controller, Version 1.0 LonMark Functional Profile: Discharge Air Controller, Version LONWORKS FTT-10A Free Topology Transceiver Users Guide

www.mcquay.com www.mcquay.com www.mcquay.com www.mcquay.com www.mcquay.com www.mcquay.com www.mcquay.com www.mcquay.com www.lonmark.org www.lonmark.org www.lonmark.org www.lonmark.org www.lonmark.org

3

Limited Warranty Consult your local McQuay Representative for warranty details. Refer to Form 933-43285Y. To find your local McQuay Representative, go to www.mcquay.com. Notice Copyright © 2007 McQuay International, Minneapolis MN. All rights reserved throughout the world. McQuay International reserves the right to change any information contained herein without prior 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.; LONWORKS and LONMARK from Echelon, Inc.; Windows from Microsoft Corporation; McQuay and MicroTech II from McQuay International.

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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.

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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 LONWORKS Local Operating Network (LON). It translates the LonTalk® variables used on the network to the variables used in the unit controller and vice versa. Two versions are available: one in accordance with the LonMark® Space Comfort 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 LONWORKS Communication Module. This manual covers both the SCC and DAC functional profiles. Each MicroTech II LONWORKS 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 LONWORKS COMMUNICATION MODULE

3.750

0.250

0.250 6.750

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Application The MicroTech II LONWORKS Communication Module connects the MicroTech II rooftop or self-contained unit controller to the Building Automation System (BAS) on a LONWORKS network. It is the interface adapter for the exchange of LonTalk variables between the network and the unit controller. The MicroTech II LonWorks Communication Module translates the LONWORKS variables of the profile into the native information of the unit controller. Figure 2 shows the MicroTech II LONWORKS Communication Module and unit controller integrated into a BAS. Refer to the appropriate Unit Operation manual for keypad details (see Reference Documents section). Figure 2. Building Automation System LonWorks FTT-10A Network

MicroTech II Main Control Board

MicroTech II LonWorks Communications Module

LonWorks Work Station LonWorks Interface Adapter

MicroTech II Keypad

Component Data Figure 3 shows the location of the major components of the MicroTech II LONWORKS Communication Module. Figure 3. MicroTech II LONWORKS Communication Module Major Components 12-Pin Header Service Pin

SW1

J6

DS3 DS2

DS1 P8 Light Emitting Diodes 1

2

3

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 LONWORKS network.

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Light Emitting Diodes (LEDs) The communications module has three LEDs to indicate communication activity and status of the communication module. LED

Function

DS1

Lights when the service pin is pressed Lights when there is a problem with the module On Steady during normal operation Blink during a Wink command Flicker during Communications Activity Blink during a Wink command

DS2 DS3

LONWORKS Network Connector (P8) The P8 connector connects the MicroTech II LONWORKS Communication Module to the LONWORKS FTT-10A bus. Pin

Designation

Function

1 2 3

None - (minus sign) + (plus sign)

No Connection FTT-10A FTT-10B

12-Pin Header The 12-pin header, J6, connects the unit controller main control board to the MicroTech II LONWORKS Communication Module through the bottom of the module.

LonMark Profile Software The MicroTech II LONWORKS Communication Module software translates the Standard Network Variable Types (SNVTs) and Standard Network Configuration Parameters (SCPTs) in accordance with the LonMark profiles used on the LONWORKS network into the variables and parameters used in the MicroTech II rooftop unit controller.

Neuron The basis of the communications module is an Echelon Neuron chip. Each Neuron chip stores a globally (i.e., worldwide) unique, 48-bit serial number called the Neuron ID. The Neuron ID can be used to address the device on the LONWORKS network.

Transceiver

The Echelon® Corporation Free Topology Transceiver (FTT-10A) is used to communicate on the LONWORKS network. The network topology may consist of a: star, daisy-chain, or other topology. Data transmission rate on the network is 78 kbps (baud).

Specifications Characteristic

Description

Network Topology Neuron Chip Processor Free Topology Transceiver (FTT-10A) Cable Types Maximum Bus Length Maximum Node Separation Data Transmission Data Transmission Rate

Flexible Free Topology 3150 50051 TIA Category 5 (recommended) 1476 ft (450) meters per segment 820 ft (250 meters) Two-wire, half duplex 78 kbps (baud)

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Installation and Network Connection General The MicroTech II LONWORKS Communication Module can be factory or field installed and can be purchased by itself or as a kit. The kit includes a wire harness and this Installation Manual. See Replacement Parts for detailed descriptions and part numbers. This document provides the information required to field install the MicroTech II LONWORKS Communication Module on the MicroTech II rooftop or self-contained unit controller and connect it to the LONWORKS network. The module mounts on connector pins and is held in place with four plastic locking standoffs. A cable harness connects the MicroTech II LONWORKS Communication Module to field wiring terminals and the LONWORKS network at a terminal block in the unit cabinet assembly.

Required Equipment Field installation and network connection requires the following: •

A MicroTech II LONWORKS Communication Module (included in kit)

•

Wire harness (included in kit)

•

LONWORKS FTT-10A acceptable network wiring (refer to Qualified Cables section for details)

•

Small straight-blade screwdriver

Mounting a new MicroTech II LONWORKS Communication Module 1. Remove power from the rooftop or self-contained unit controller. 2. Remove the plug-in connector terminal block in P8 (see Figure 3.) 3. Locate the blank connector and four standoffs for the MicroTech II LONWORKS Communication Module on the unit controller’s main control board (see Figure 4.) 4. Orient the printed circuit board so that the side with the components faces out and connector pins can penetrate the connector on the board. 5. Push the board onto the connector pins and standoffs until you hear the faint click of the locking standoffs securing the board in place. Connecting the MicroTech II LONWORKS Communication Module to the Network: Applied Rooftop Units 1. Connect the MicroTech II LONWORKS Communication Module to the network with provided wire harness (see Figure 7.) 2. Connect the cable harness white/blue wire (No. 522) to the A terminal of the P8 connector. Connect the blue wire (No. 523) to the B terminal of the P8 connector. No wire is connected to the remaining terminal of P8. 3. Route the cable harness down to the shelf below the unit controller and to the left along the shelf to the edge. Route the cable through a hole down the raceway to Terminal Block TB2. 4. Connect the cable harness white/blue wire (No. 522) to terminal 128 of TB2. Connect the blue wire (No. 523) to terminal 129 of TB2. 5. Connect the network cable to TB 2 terminals 128 and 129 (see Figure 5). Connecting the MicroTech II LONWORKS Communication Module to the Network: Self-Contained Units 1. Connect the MicroTech II LONWORKS Communication Module to the network with wire harness (see Figure 8.) 2. Connect the wire harness white/blue wire (No. 522) to the + terminal of the P8 connector. Connect the blue wire (No. 523) to the - terminal of the P8 connector. No wire is connected to the remaining terminal of P8. 3. Route the wire harness over to the right side of the unit controller and up to Terminal Block TB2 4. Connect the wire harness white/blue wire (No. 522) to terminal 128 of TB2. Connect the blue wire (No. 523) to terminal 129 of TB2. 5. Connect the network cable to TB 2 terminals 128 and 129 (see Figure 5).

Replacing a MicroTech II LONWORKS Communication Module To replace an existing MicroTech II LONWORKS Communication Module on a rooftop or self-contained unit controller: 1. Remove power from the unit controller. 2. Remove the connector in P8 (see Figure 3.) IM702-4

9

3. Locate the four standoffs for the MicroTech II LONWORKS Communication Module on the unit controller’s main control board. 4. Use a small screwdriver to depress the barb on one standoff and gently pull the corner of the board over the barb. Be careful to not bend the board or misalign the connector pins. 5. Proceed to the other three corners and pull the board over the standoffs. 6. Gently lift the MicroTech II LONWORKS Communication Module from the unit controller. 7. Locate the blank connector and four standoffs for the MicroTech II LONWORKS Communication Module on the unit controller (see Figure 4.) 8. Orient the board so that the side with the components faces out and connector pins can penetrate the connector on the board. 9.

Push the board onto the connector pins and standoffs until you hear the faint click of the locking standoffs securing the module in place. Connecting the MicroTech II LONWORKS Communication Module to the Network 1. Replace the network plug in P8 (see Figure 3.) 2. Reconnect the network cable to TB 2 terminals 128 and 129 if necessary (see Figure 5). Figure 4. MicroTech II Applied Rooftop Unit Controller Main Control Board

Main Control Board

Terminal Block Connector Connector

Location of Standoff (4 places)

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Figure 5. LONWORKS Network Connection Schematic Diagram

Main Control Board (MCB)

Unit Terminal Block Tb2

128 LonWorks Network

129

522

A+

523

B-

LonWorks Communications Module

Figure 6. Mount LONWORKS Communication Module 12-Pin Header

Communications Module

Locking Standoff

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Figure 7. Cable Harness Routing - Applied Rooftop Unit Controller

LonWorks

Communications Comunications Module Cable Shelf

Network Cable

Cable Raceway

Terminal Block TB2

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Figure 8. Cable Harness Routing - Self-Contained Unit

Controller

Terminal Block TB2

LonWorks Communications Comunications Module

Network Cable Harness

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Integration Integrating the MicroTech II LONWORKS Communication Module into a BAS involves three steps: •

Physically connecting the MicroTech II unit controller (node) to the network

•

Addressing and establishing communications with the unit controller

•

Configuring the unit controller to the building

Network Connection After inserting the MicroTech II LONWORKS Communication Module to the MicroTech II unit controller, connect the MicroTech II unit controller into the LONWORKS network (see Installation and Network Connection section of this document for details.)

Network Topology Each MicroTech II LONWORKS Communication Module is equipped with an FTT-10A transceiver for network communications. This transceiver allows for (1) free topology network wiring schemes using twisted pair (unshielded) cable and (2) polarity insensitive connections at each node. This feature simplifies installation and reduces potential network commissioning errors. Additional nodes may be added with little regard to existing cable routing.

Free Topology Networks A LONWORKS "free topology network" means that devices (nodes) can be connected to the network in a variety of geometric configurations. For example, devices can be daisy-chained from one device to the next, connected with stub cables branching off from a main cable, connected using a tree or star topology, or any of these configurations can be mixed on the same network (see Figure 9.) Free topology segments require termination for proper transmission performance. Only one termination is required. It may be placed anywhere along the segment. Refer to Echelon LONWORKS FTT-10A Transceiver User's Guide. Free topology networks may take on the following topologies: •

Bus

•

Ring

•

Star

•

Mixed - Any combination of Bus, Ring, and Star

Note: Limitations to wire lengths apply and must be observed. Figure 9. Singly Terminated Free Topology Networks Ring Topology

Star Topology Singly Terminated Bus Topology Stub

Termination

Termination

}

Termination

Mixed Topology

Termination

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A network segment is any part of the free topology network in which each conductor is electrically continuous. Each of the four diagrams in Figure 9 is an illustration of a network segment. Some applications may require two or more segments (see Free Topology Restrictions section). If necessary, segments can be joined with FTT-10A-to-FTT-10A physical layer repeaters. See Figure 10. Refer to Echelon LONWORKS FTT-10A Transceiver User’s Guide.

FTT-10A

Termination

FTT-10A

Figure 10. Combining Network Segments With a Repeater

Termination

Free Topology Restrictions Although free topology wiring is very flexible, there are restrictions. Refer to the Echelon LONWORKS FTT-10A User’s Guide for details. 1. The maximum number of nodes per segment is 64. 2. The maximum total bus length depends on the wire size (see Physical Networks section for details.) 3. One termination is required in each segment. It may be located anywhere along the segment. Wire Size

Maximum Node-to-Node Length

Maximum Cable Length

24 AWG 22 AWG 16 AWG

820 ft (250 m) 1312 ft (400 m) 1640 ft (500 m)

1476 ft (450 m) 1640 ft (500 m) 1640 ft (500 m)

The longest cable path between any possible pair of nodes on a segment must not exceed the maximum node-to-node distance. If two or more paths exist between a pair of nodes (e.g., a loop topology), the longest path should be considered. Note that in a bus topology, the longest node-to-node distance is equal to the total cable length. The total length of all cable in a segment must not exceed the maximum total cable length.

Doubly Terminated Networks You can extend the maximum total cable length without using a repeater by using doubly terminated network topology. See Figure 11. The trade-offs are (1) this network topology must be rigorously followed during the installation and subsequent retrofits and (2) two terminations must be installed at the ends of the bus for proper transmission performance. Refer to Echelon LONWORKS FTT-10A Transceiver User’s Guide. Limitations to wire lengths apply and must be observed. Figure 11. Doubly Terminated Network Topology

Termination

Termination

Doubly Terminated Topology Restrictions The restrictions on doubly-terminated bus topology are as follows: 1. The maximum number of nodes per segment is 64. 2. The maximum total bus length depends on the wire size (see Qualified Cables section for details). 3. The maximum stub length is 9.8-ft (3 m). The length of the cable harness stub is 7.2-ft (2.19 m). 4. Two terminations are required in each segment. One must be located at each end of the bus. Wire Size

Maximum Cable Length

24 AWG 22 AWG 16 AWG

2952 ft (900 m) 4590 ft (1400 m) 8855 ft (2700 m)

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Note:

A stub is a piece of cable that is wired between the node and the bus (see Figure 9.) Note that if the bus is wired directly to the node, there is no stub, and thus the stub length is zero. If you are wiring to a field terminal strip on a unit, you must account for any factory wiring between the terminal strip and the controller. This wiring is considered part of the stub.

Physical Network Qualified Cables Echelon has qualified three twisted-pair network communications cables that are available from various sources. Refer to Echelon LONWORKS FTT-10A Free Topology Transceiver Users Guide. Some local codes or applications may require the use of plenum rated cable. The following cables meet this specification. •

TIA568A Category 5 cable (24AWG/0.51mm)

•

NEMA Level IV cable (22AWG/0.65mm)

•

Generic 16AWG (1.3mm) (similar to Belden 85102)

Do not install the cable in the same conduit with power wiring. The temperature of the cable must not exceed 131°F (55°C). Note:

Ideally, you should connect two controllers with one continuous piece of cable in order to reduce the risk of communications errors. If you must splice the cable, use crimp-type butt connectors (good) or solder (best). Do not use wire nuts.

Network Cable Termination LONWORKS network segments require termination for proper data transmission performance. The type and number of terminations depend on network topology. Refer to Echelon LONWORKS FTT-10A Transceiver User’s Guide.

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Addressing and Establishing Communications The following steps are required to establish communication between the MicroTech II LONWORKS Communication Module and the LONWORKS network: •

Press the service pin on the MicroTech II LONWORKS Communication Module

•

Address the unit controller (device) using a LONWORKS network configuration software tool (software must be procurred separately)

General Every Neuron Chip has a unique 48-bit Neuron ID or physical address. This address is generally used only at initial installation or for diagnostic purposes. For normal network operation, a device address is used. Device addresses are defined at the time of network configuration. All device addresses have three parts. The first part is the Domain ID, designating the domain. Devices must be in the same domain in order to communicate with each other. The second part is the Subnet ID that specifies a collection of up to 127 devices that are on a single channel or a set of channels connected by repeaters. There may be up to 255 subnets in a domain. The third part is the Node ID that identifies an individual device within the subnet. A group is a logical collection of devices within a domain. Groups are assembled with regard for their physical location in the domain. There may be up to 256 groups in a domain. A group address is the address that identifies all devices of the group. There may be any number of devices in a group when unacknowledged messaging is used. Groups are limited to 64 devices if acknowledged messaging is used. A broadcast address identifies all devices within a subnet or domain. LONWORKS Network Addressing Pressing 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 LONWORKS network. A LONWORKS network configuration tool (such as LonMaker®) maps device Neuron IDs to the domain/subnet/node logical addressing scheme when it creates the network image, the logical network addresses, and connection information for all devices (nodes) on the network.

External Interface File (XIF) LonMark guidelines specify exact documentation rules so that proprietary configuration tools are not required to commission and configure LONWORKS devices. The MicroTech II LONWORKS Communication Module is selfdocumenting so that any network management tool can obtain all the information needed over the network to connect it into the system and to configure and manage it. An external interface file (a specially formatted PC text file with an extension .XIF) is also available so that any network tool can design and configure it prior to installation. The XIF file is available on www.mcquay.com.

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Configuring the Unit Controller All Rooftop and Self-contained unit controllers are loaded with software and configured at the factory for stand-alone operation. The unit is ready to operate with default set point parameters that can be changed with the unit’s keypad/display or via a network signal. Refer to the appropriate operation manual for the default values and keypad/display operating instructions. Refer to the appropriate MicroTech II Protocol Information documents for descriptions of the available network variables (see Reference Documents section). There are 12 communication parameters involved in setting up the unit controller for proper communication with the various communication module options (BACnet IP, BACnet MS/TP or LONWORKS). These parameters are set differently by the factory depending on which communication module is ordered and shipped with the unit. Table 1 below lists the four possible sets of default parameter settings. Not all the parameters apply to all the communication module options. The entries in the table that are shown in bold font apply to a particular communication module option.

Factory-Installed LONWORKS Communication Modules If the rooftop or self-contained unit controller is equipped with a factory-installed LONWORKS Communication Module (DAC or SCC), the controller is pre-configured with the values shown in Table 1. These parameters do not require field modification.

Field-Installed LONWORKS Communication Modules A LONWORKS Communication Module can be added to a rooftop or self-contained unit controller in the field for these reasons: 1.

The unit did not originally ship with a communication module.

2.

The unit originally shipped with a BACnet® Communication Module but requires replacement with a LONWORKS Communication Module. Refer to Table 1 to determine whether or not changes are required to communication setup parameters.

3.

The LONWORKS Communication Module that shipped with the unit requires replacement.

Note:

McQuay MicroTech II ServiceTools™ software is required to modify these parameters. Call the McQuay Controls Customer Support group at 866-4MCQUAY for more information.

Table 1. Factory Communication Setup Parameter Settings Parameter Name

lP Address IP Subnet Mask UDP Port Number IP Router Address IP Network Address MSTP Network Address MSTP MAC Address1 MSTP Baud Rate Communication Option Device Instance Number2 Max APDU Length3 Device Object Name4

BACnet IP

172.16.83.46 255.255.0.0 47808 172.16.128.0 1001 2001 129 19200 None XXXXXX 1024 MTll RTUC XXXXXXXXX or MTII SCUC XXXXXXXXX

BACnet MSTP

LON (DAC or SCC)

No Communication Module

172.16.83.46 255.255.0.0 47808 172.161.28.0 1001 2001 2 19200 MSTP XXXXXX 501

172.16.83.46 255.255.0.0 47808 172.16.128.0 1001 2001 129 19200 MSTP XXXXXX 501

172.16.83.46 255.255.0.0 47808 172.16.128.0 1001 2001 129 19200 MSTP XXXXXX 501

MTll RTUC XXXXXXXXX or MTII SCUC XXXXXXXXX

MTll RTUC XXXXXXXXX or MTII SCUC XXXXXXXXX

MTll RTUC XXXXXXXXX or MTII SCUC XXXXXXXXX

Important Notes 1.

The MSTP MAC Address is not adjustable from MicroTech II ServiceTools software. It is set via the dipswitch block on the MSTP communication module.

2.

The Device Instance Number is factory set equal to the last six significant digits of the 18 digit number on the barcode label on the unit's main control board (MCB). For example if the last six digits are 043.066, then the Device Instance Number is set to 43066. Whether or not this parameter is use by the system integrator, it must be set to a unique value from all other controllers in the network.

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3.

The Max APDU Length parameter should not be set higher than 1024 for BACnet IP or 501 for BACnet MSTP.

4.

The Xs in Device Object Name are factory set equal to the last nine digits of the 18 digit number on the bar-code label on the units main control board (MCB). For example if the last nine digits are 000.043.066, then the Device Object Name is set to MTII RTUC 000043066 for an applied rooftop unit or MTII SCUC 000043066 for a vertical selfcontained unit. Whether or not this parameter is use by the system integrator, it must be set to a unique value from all other controllers in the network.

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Service Information

Troubleshooting If you can control the unit from the unit’s keypad, but you are not able to communicate with unit via the network: • Check the network wiring. •

Check the cable harness to the network terminals.

•

Check addressing.

•

Press the Service Pin on the MicroTech II LONWORKS Communication Module to send the service message to the network.

•

The service pin message contains the Neuron ID and the program code identification of the node.

•

Check the network communication set up parameters in the controller for proper settings (see Configuring the Unit Controller section).

If the MicroTech II LONWORKS Communication Module still does not respond, contact McQuay Controls Customer Support at 866-4MCQUAY (866-462-7829).

Replacement Parts Contact the McQuay Parts group at 763-553-5451 for replacement parts related to the LONWORKS Communication Module. McQuay does not supply the network connection plug. The three-contact network connection plug has custom graphics, but can be replaced with a standard network connector. The table below provides two manufacturers with the generic version of the network connection plug. Description

Part Number

Contact

LONWORKS Communication Module (SCC) installation kit (kit includes communication module, wire harness and IM) LONWORKS Communication Module (DAC) installation kit (kit includes communication module, wire harness and IM) LONWORKS Communication Module (SCC) LONWORKS Communication Module (DAC) Wire harness Network connection plug Network connection plug

090016703

McQuay Parts

090016704

McQuay Parts

060006203 060006204 090011184 17 57 02 2 37.003

McQuay Parts McQuay Parts McQuay Parts Phoenix Contact Altech Corp

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