Installation and Maintenance Manual IM 731-2

Group: Controls

Part Number: 669479002

Date: November 2011

Supersedes: IM 731-1

© 2011 Daikin

MicroTech II ® AAF® HermanNelson® Unit Ventilator Controller BACnet® MS/TP Communication Module

NOTICE

Use this manual to physically install the Daikin MicroTech II BACnet Communication Module into the unitventilator unit controller and connect the unit controller to your network. Use the appropriate Daikin EngineeringData (ED), known as the Protocol Information document, to integrate the unit into your network. The Protocol Information document contains addressing details, BACnet® 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 III control integration literature is available from your local Daikin sales representative and www.DaikinApplied.com.

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Contents General Information .............................................................................................................. 5 Description............................................................................................................................................ 6 Application............................................................................................................................................ 6 Component Data.................................................................................................................................... 6 Network Connection ............................................................................................................. 7

Address Switch.................................................................................................................................. 7 Dip Switch Settings....................................................................................................................................... 7

12-Pin Header ................................................................................................................................... 8 Termination Resistor ......................................................................................................................... 8

Installation ............................................................................................................................. 9 To install a BACnet MS/TP communication module:....................................................................... 9 To replace a BACnet MS/TP communication module: ................................................................... 10

Integration............................................................................................................................ 12 Network Connection ........................................................................................................................... 12

BACnet MS/TP Network Addressing.......................................................................................................... 12Configuring the Unit Controller .......................................................................................................... 12 Service Information............................................................................................................. 13 Test Procedures................................................................................................................................... 13 Replacement Parts............................................................................................................................... 13

Figures Figure 1. BACnet MS/TP communication module ............................................................................... 6 Figure 2. BACnet MS/TP communication module major components ................................................ 6 Figure 3. TB2 wiring connections......................................................................................................... 7 Figure 4. Address switch (S1) .............................................................................................................. 7 Figure 5. Dip switch values (when ON) ................................................................................................ 8 Figure 6. Address switch (S1) set to example ....................................................................................... 8 Figure 7. BACnet MS/TP communication module mounted on the unit controller ............................ 10 Figure 8. BACnet MS/TP communication module mounting detail.................................................... 11 Figure 9. BACnet MS/TP communication module typical wiring....................................................... 11

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Limited Warranty Consult your local Daikin Representative for warranty details. Refer to Form 933-43285Y. To find your local Daikin Representative, go to www.DaikinApplied.com.

Revision History IM 731-1 7/1/02 Initial Release

IM 731-2 11/1/11 Changed reference to factory default baud rate to 9600. Minor formatting changes.

Reference Documents Number Source Title

OM748 www.DaikinApplied.com Air Source Heat Pump with Electric Heat (Software Model 00)

OM749 www.DaikinApplied.com Water Source Heat Pump with Electric Heat (Software Model 02)

Water Source Heat Pump without Electric Heat (Software Model 03)

OM750 www.DaikinApplied.com DX Cooling with Electric Heat (Software Model 04)

OM751 www.DaikinApplied.com DX Cooling Only (Software Model 05)

OM752 www.DaikinApplied.com Electric Heat Only (Software Model 06)

OM753 www.DaikinApplied.com DX Cooling with Wet Heat - Valve Control (Software Model 07)

DX Cooling with Wet Heat - F&BP Damper Control (Software Model 08)

OM754 www.DaikinApplied.com 2-pipe Wet Heat Only - Valve Control (Software Model 09)

2-pipe Wet Heat Only - F&BP Damper Control (Software Model 10)

OM755 www.DaikinApplied.com 2-pipe Heat/Cool - Valve Control (Software Model 11)

2-pipe Heat/Cool - F&BP Damper Control (Software Model 12)

OM756 www.DaikinApplied.com 4-pipe Heat/Cool - Valve Control (Software Model 13)

4-pipe Heat/Cool - F&BP Damper Control (Software Model 14)

OM757 www.DaikinApplied.com 2-pipe Cooling Only - Valve Control (Software Model 15)

2-pipe Cooling Only - F&BP Damper Control (Software Model 16)

OM758 www.DaikinApplied.com 2-pipe Cooling with Electric Heat - Valve Control (Software Model 17)

2-pipe Cooling with Electric Heat - F&BP Damper Control (Software Model 18)

ED 15069 www.DaikinApplied.com MicroTech II™ Unit Ventilator Unit Controller

Protocol Implementation Conformance Statement

ED 15065 www.DaikinApplied.com MicroTech II™ AAF®-HermanNelson® Unit Ventilator Unit Controller Protocol Information

IM729 www.DaikinApplied.com MicroTech II™ AAF®HermanNelson® Unit Ventilator ControllerLonWorks® Communication modules

IM747 www.DaikinApplied.com MicroTech II™ Unit Ventilator Unit Controls Installation Manual

ANSI/ASHRAE 135-1995

ASHRAE 1791 Tullie Circle NE, Atlanta, GA

30329

BACnet® A Data Communication Protocol for Building Automation and Control Networks

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Notice Copyright © 2011 Daikin, Minneapolis MN. All rights reserved throughout the world.Daikin reserves the right to change any information contained herein without prior notice. The user is responsiblefor 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, Daikin, ServiceTools, and MicroTech II from Daikin.

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General Information

Use this manual to physically install the MicroTech II® BACnet® MS/TP communication module onto the Unit Ventilator main control board (i.e. unit controller) and to make the wiring connections to your network. You also need the appropriate Protocol Information document (i.e. Engineering Data - ED 15065) to integrate the unit into your network. The ED document contains addressing details, BACnet protocol information, and a list of the data points available to the network. See the Reference Documents section for details. These documents are available from your local Daikin representative and at www.DaikinApplied.com.

! DANGERDangers indicate a hazardous situation that will result in death or serious injury if not avoided.

! WARNING Warnings indicate potentially hazardous situations, which can result in property damage, severe personal injury, or death if not avoided.

! CAUTION Cautions indicate potentially hazardous situations, which can result in personal injury or equipment damage if not avoided.

! WARNINGElectric shock hazard. Can cause personal injury or equipment damage.

This equipment must be properly grounded. Connections and service to the MicroTech II UV Unit Controller must be performed only by personnel 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. Daikin disclaims any liability resulting fromany interference or for the correction thereof.

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Description

The MicroTech II® BACnet® MS/TP communication module is a printed-circuit board that plugs onto the MicroTech II Unit Ventilator Unit Controller board. Figure 1 shows an outline drawing of the BACnet MS/TP communication module with reference dimensions.

Figure 1. BACnet MS/TP communication module

Application The MicroTech II BACnet MS/TP communication module connects the MicroTech II Unit Controller to the Building Automation System (BAS) on a BACnet MS/TP Local Area Network (LAN). It is the interface adapter for the exchange of BACnet objects between the network and the unit controller.

Component Data Figure 2 shows the major components of the communication module.

Figure 2. BACnet MS/TP communication module major components

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Network Connection

MS/TP BACnet network wiring connections are made to TB2. This connector is physically made in two parts. There is:

♦ A board-mounted (4-terminal) male plug

♦ A (4-terminal) female plug with screw-type wiring connections.

Note: The two portions come plugged together and look like a single part. However, they can be separated at the middle by gently pulling them apart. Connect the wiring (that has been stripped of insulation by about 1/3-inch) to the TB2 female plug portion. Insert the wires into the proper screw-terminals and tighten the connections with a small flat-blade screwdriver. Verify that the wiring connections are not shorted and that they are tight.

Figure 3. TB2 wiring connections

Pin Function

RT+ Non-inverting Input (clear)

RT- Inverting Input (black)

COM Common

SH Unused

Address Switch

The Address Switch (S1) must be field-configured on each MicroTech II BACnet MS/TP communication module to a unique Media Access Control (MAC) address, so that it can be located and addressed when wired into the network. The system integrator usually pre-assigns an address to each module.

This unique address setting is made using the first seven switches of S1 (1-7). Always leave switch 8 in the OFF position (Master position). The available range of possible addresses using the binary switches is 0 through 127.

NOTE: Disregard any ON-OFF marking designations on the switch. The UP position (toward the board edge) is OFF. See Figure 4.

Figure 4. Address switch (S1)

Dip Switch Settings When a switch is in the up (OFF) position, its value is 0. So when all the switches are in the OFF position, the communication module address is 0. When switches are set in the ON (closed) position, their individual values are shown in Table 2 below. When all switches (except 8) are ON (closed), the communication module address is 127.

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Figure 5. Dip switch values (when ON)

Switch # Value Number when closed

1 2 to the zero power 1

2 2 to the 1st power 2

3 2 to the 2nd power 4

4 2 to the 3rd power 8

5 2 to the 4th power 16

6 2 to the 5th power 32

7 2 to the 6th power 64

8 Must always be in the up (OFF) position

Figure 6 shows an example of a typical address setting. The digital switch positions as read from left to right are: 00110010. This provides an address of 76 as illustrated below.

Figure 6. Address switch (S1) set to example

0+0+4+8+0+0+64+0=76

12-Pin Header

The 12-pin header, J1, connects the Unit Controller board to the MicroTech II BACnet MS/TP communication module through the bottom side of the printed-circuit board.

Termination Resistor

The MicroTech II Unit Ventilator Unit Controller provides 100k-ohm high impedance local bias resistors. It is therefore required that at least one other device on the network (but no more than two) provide the network bias. In addition to the network bias, terminating resistors must be installed across the (+) and (-) terminals at each end of the MS/TP segment bus. Terminating resistors rated at 120-ohm ¼-W +/- 5% must be used.

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Installation

The MicroTech II BACnet MS/TP communication module may either be installed in the factory or field installed. The communication module mounts on connector pins and is held in place with four plastic locking standoffs. The BACnet MS/TP network connects to the MicroTech II BACnet MS/TP communication module at the network connector plug (TB2).

The MicroTech II BACnet MS/TP communication module is included in a kit (part number 107293126). You need to know the MAC address that is assigned to the communication module. The network administrator can supply this information.

To install a BACnet MS/TP communication module:

1. Disconnect power from the Unit Controller board.

2. Unplug the unwired network cable connector from the terminal block TB2.

3. Install the three standoffs on the Unit Controller board. (see Figure 7).

4. Locate the 12-pin male connector (JP1) on the Unit Controller board. Orient the communicationmodule board so that the component side faces out and the connector pins can penetrate theconnector through the bottom of the board. Then push the board onto the connector pins andstandoffs until you hear the faint click of the locking standoffs securing the board in place(see Figure 8).

5. Connect the network wiring to the network cable connector and plug it into the terminal block,TB2, on the MicroTech II MS/TP communication module (see Figure 9).

Note: You must maintain the polarity of the signal throughout the network. Always connect + to + and – to –. The shield connection must be continuous throughout the entire network and must be connected to earth ground at one (and only one) point. The BACnet MS/TP network must be terminated at each end with 120-ohm resistors between the + and - terminals.

6. Set the Media Access Control (MAC) address which was supplied by the network administratorusing the Address Switch (S1). The valid range is 0 to 127 (see Address Switch). Do not useswitch #8. It must be left in the OFF position so that the unit may retain its Master status.

7. Reapply power to the Unit Controller board.

Note: The application software version loaded in the BACnet communication module must match the application software version of the Unit Ventilator Unit Controller. To confirm this match, it is best to perform an application download whenever a communication module is installed. For further details, refer to the MicroTech II ServiceTools™ for ATS Users Manual (UM732), available on www.DaikinApplied.com.

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To replace a BACnet MS/TP communication module:

1. Disconnect power from the Unit Controller board.

2. Record the MAC address on the Address Switch (S1).

3. Unplug the wired network cable connector from the terminal block TB2.

4. Locate the four standoffs for the MicroTech II BACnet MS/TP communication module on theUnit Controller board (see Figure 7 and Figure 8).

5. Using a pliers or screwdriver to depress the barb on one standoff, gently pull the corner of thecommunication module over the barb. Be careful to not bend the communication module ormisalign the connector pins.

6. Proceeding to the other two corners, remove the communication module from each standoff, andpull the module over the standoffs.

7. Gently lift the MicroTech II BACnet MS/TP communication module from the Unit Controllerboard.

8. Locate the empty connector pins and three standoffs for the MicroTech II BACnet MS/TPcommunication module on the Unit Controller board.

9. Orient the communication module printed-circuit board so that the component side faces outwardand the connector pins can penetrate the 12-pin header on the communication module.

10. Push the communication module onto the connector pins and standoffs until you hear the faintclick of the locking standoffs securing the board in place.

11. Connect the communication module to the network by reinserting the network-cable plug intoTB2 (see Figure 9).

12. Using Address Switch (S1), set the MAC address the same as the original MicroTech II BACnetMS/TP communication module.

13. Reapply power to the Unit Controller board.

Note: The communication module application-software model must match that which is loaded in the Unit Ventilator Unit Controller. To ensure this match, it is best to perform an application download whenever a communication module is installed. For further details, refer to the MicroTech II ServiceTools for ATS Users Manual (UM732), available on www.DaikinApplied.com.

Figure 7. BACnet MS/TP communication module mounted on the unit controller

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Figure 8. BACnet MS/TP communication module mounting detail

Figure 9. BACnet MS/TP communication module typical wiring

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Integration

Network Connection

BACnet MS/TP Network Addressing

The BACnet MS/TP MAC address of the unit controller in a BACnet Master Slave/Token-Passing (MS/TP) Local Area Network (LAN) is set by using the eight-position DIP switch on the BACnet MS/TP communication module (see Address Switch section for details). The address is physically set using the first seven of the binary switches. Always leave switch 8 in the 0 (OFF) position to confirm that the unit ventilator control board is set as a master controller.

A switch that is set to OFF (up or toward edge of board) is a 0, and the value of a switch that is set to ON (down or toward board center) is shown in Figure 5. The address naming starts with switch 1. Each address must be unique and set during installation. After setting the address with the switches, you must cycle power to the controller (turn the controller off and then on again) for the new address to take effect.

The factory default data transmission rate is set to 9600-bps (baud). The data transmission rate can be changed to 19200-bps, if desired. Refer to the MicroTech II Protocol Information Document, ED 15065, for further information.

Configuring the Unit Controller

Each Unit Controller and MicroTech II BACnet MS/TP communication module ships ready to operate using the factory default values. These default values may be changed via the unit’s keypad, using MicroTech II ServiceTools for ATS and a PC, or via the network. See the appropriate operation manual for default values and keypad operating instructions, and refer to the appropriate MicroTech II Protocol Information for descriptions of the network variables.

The MS/TP Network Address and the MS/TP Baud Rate of the unit controller must be the same as all other BACnet devices on the network in order for the devices to communicate with each other. Both BACnet object identifiers (device instances) and BACnet device object names must be unique to the entire BACnet network.

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Service Information

Test Procedures

If you can control the unit from the keypad but are unable to communicate with it via the network, try the following:

• Verify the network (bus) wiring

• Check the integrity of the cable harness to the network terminals

• Verify that the MS/TP MAC address (S1) is set to a unique binary number and that Switch 8 is inthe open (OFF) position.

If the MicroTech II BACnet MS/TP communication module still doesn’t respond, replace the module.

For technical assistance, contact the Daikin Controls Customer Support group at 866-462-7829.

Replacement Parts

You can order direct replacement parts from Daikin (1-800-37-PARTS).

Description Part Number

MicroTech II BACnet MS/TP Communication Module Kit for Unit Ventilators (kit includes communication module, IM 731, and standoffs)

107293126

MicroTech II ServiceTools™ for ATS software kit (kit includes software CD and service cable)

250604301