Daikin MicroTech III Chiller Unit Controller BACnet IP Communication Module

Introduction

This manual contains information regarding the network integration system used with MicroTech III unit controllers on Daikin Applied chillers. It describes how to install or replace a BACnet communication module on a MicroTech III chiller unit controller. It also explains how to set network parameters and establish communication between the chiller and BACnet network.

Revision History

Reference Documents

Software Revision

This document supports BSP (Board Support Package) BACnet communication module firmware version 11.42 and all subsequent versions until otherwise indicated.

Limited Warranty

Consult your local Daikin Applied Representative for warranty details. To find your local Daikin Applied Representative, go to www.DaikinApplied.com.

Hazardous Information Messages

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

• 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.

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

DANGER Dangers indicate a hazardous situation which will result in death or serious injury if not avoided. Electric shock hazard. Can cause personal injury or equipment damage. This equipment must be properly grounded. Connections and service to the unit controller must be performed only by personnel knowledgeable in the operation of the equipment being controlled.

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 from any interference or for the correction thereof.

Features

• Integration into a building automation and control system via BACnet IP (B-AAC profile and BBMD)
• Simple attachment to a MicroTech III chiller unit controller
• LEDs that indicate communication status and network activity
• Network parameters configurable via the unit controller, BAS, or remote HMI
• BACnet application pre-installed and ready for custom configuration
• Circuit board components enclosed in protective housing

Specifications

The following section provides a summary of technical data and conformance to agency listings.

General

Operating

Storage and Transportation

Electrical

Additional Components

Agency Listings

Dimensions

Figure 1 and Figure 2 provide key dimensional data.

Figure 1: BACnet Communication Module Top View

The BACnet Communication Module has dimensions of 1.77 inches (45 mm) in width, 4.33 inches (110 mm) in height, and 2.95 inches (75 mm) in depth. Figure 1 shows the top view with the width and height indicated.

Figure 2: BACnet Communication Module Side View

Figure 2 shows the side view detailing the depth and height of the module.

Component Data

The BACnet communication module is a printed circuit board with a plastic enclosure. It connects directly to the left-hand side of the MicroTech III chiller unit controller as shown in Figure 3. It may be possible that another module is also connected to the unit controller. In this case, the BACnet communication module simply attaches directly to the left side of the existing module instead of the unit controller.

Figure 3: BACnet IP Communication Module Attached to Unit Controller

Figure 3 illustrates the BACnet IP Communication Module physically attached to the left side of a MicroTech III chiller unit controller. It shows the module connecting to the controller, and notes that another module might be present, with the BACnet module attaching to the existing module if necessary.

Figure 4 shows the important features of the BACnet communication module, which are described in the following section.

Figure 4: BACnet IP Communication Module

Figure 4 displays the BACnet IP Communication Module, highlighting key features: the RJ-45 Network Connector for IP connection, the BUS LED for network communication status, and the BSP LED for board support package status. The module itself is labeled MT3041.

Light Emitting Diodes (LEDs)

The BACnet communication module has a BSP LED and a BUS LED to indicate communication activity and status of the BACnet communication module. These indicators are visible when the communication module is connected to the MicroTech III chiller unit controller and the unit is powered on (Figure 4).

BSP LED

The BSP LED indicates the communication state between the BACnet communication module and the MicroTech III chiller unit controller. The table below describes the status of the BSP LED (Figure 4).

¹ In the event that this should occur, cycle power to the unit controller. Contact the Daikin Applied Controls Customer Support group at 866-462-7829 for additional assistance if necessary.

BUS LEDs

The BUS LED indicates the communication status between the BACnet communication module and the BACnet IP network. The table below describes the status of the BUS LED.

¹ For BACnet communication modules with BSP 10.xx or newer, the status indicates "Other" when there is no active network connection from a BAS.

BACnet Network Connector

The BACnet communication module has an RJ-45 port for connection to the IP Network (Figure 4).

Board-To-Board Connector

The 10-pin board-to-board connector connects the MicroTech III chiller unit controller to the BACnet communication module (Figure 5 and Figure 8).

Figure 5: Board-to-Board Connector

Figure 5 shows a detailed view of the 10-pin board-to-board connector. It illustrates the arrangement of pins and baffles, noting the 3.5mm element and 1.4mm element, essential for aligning the module with the unit controller.

Installation

Installation and Mounting

The following section describes how to field install a new BACnet IP communication module or replace an existing module on the MicroTech III chiller unit controller.

CAUTION Electrostatic discharge hazard. Can cause equipment damage.

This equipment contains sensitive electronic components that may be damaged by electrostatic discharge from your hands. Before you handle a communication module, you need to touch a grounded object, such as the metal enclosure, in order to discharge the electrostatic potential from your body.

WARNING Electric shock hazard. Can cause personal injury or equipment damage.

This equipment must be properly grounded. Only personnel knowledgeable in the operation of the equipment being controlled must perform connections and service to the unit controller.

Field Installation Kit

The BACnet communication module field-installed kit ships with the following items:

• The BACnet IP communication module
• Board-to-board connector - Figure 5
• This manual (IM 966)

Installing a new Communication Module

Follow these steps to install a BACnet communication module on the unit controller. The BACnet communication module can be connected directly to the unit controller itself or to an existing module, if one is attached.

NOTE: There is a limit of three devices that can be attached to the left side of the unit controller.

1. Disable the chiller by setting the Unit On/Off Switch to "Off" from inside the control panel of the unit. This must be done prior to installing a new communication module. See Figure 6 for switch location.
2. Remove power from the unit controller.
3. Carefully remove the blue plastic knockout strip on the far left end of the unit controller itself (or additional module, if present). Figure 7 shows the knockout strip after it has been removed from the unit controller. To prevent damage to the unit controller, insert a small flathead screwdriver or similar tool into the tab on the bottom of the unit controller and pull the screwdriver away from the controller.
4. Carefully remove the blue plastic knockout strip on the right side of the BACnet communication module.

Figure 6: Chiller Unit Controller On/Off Switch

Figure 6 points out the 'Unit On/Off Switch' located inside the control panel of the chiller unit controller, which must be set to 'Off' before installation or replacement procedures.

Figure 7: Communication Module and Knockout

Figure 7 depicts the process of removing a blue plastic knockout strip from the unit controller or communication module. It shows the knockout strip removed and highlights the importance of aligning the slot in the module with the baffle in the board-to-board connector for proper connection.

5. Insert the board-to-board connector into the BACnet communication module. Note that it only fits one way and that the baffles must line up with corresponding slots in BACnet communication module and the unit controller (Figure 7 and Figure 8).
6. Insert the other end of the board-to-board connector to the far-left side of the unit controller or other module, if attached.
7. Insert a CAT 5 Ethernet cable into the communication module's network connector (Figure 4).
8. Apply power to the unit controller.

NOTE: The unit controller automatically resets itself approximately 30 seconds after power has been applied to it. This reset is necessary so that the BACnet communication module can synchronize with the unit controller.

9. Set the Unit On/Off Switch to "On" from inside the control panel of the unit.

Figure 8: Communication Module with Board-to-Board Connector Inserted

Figure 8 shows the BACnet communication module with the board-to-board connector already inserted. It displays the module's label (e.g., 'Origin: Germany', 'UL LISTED', 'CE') and the connector's pins.

Replacing a Communication Module

Follow these steps to remove an existing BACnet communication module from the unit controller and replace it with a new module.

1. Disable the chiller by setting the Unit On/Off Switch to "Off" from inside the control panel of the unit. This must be done prior to replacing a communication module. See Figure 6 for switch location.
2. Remove power from the unit controller.
3. Locate the BACnet communication module to the left of the unit controller (Figure 3).
4. Gently pull the network cable connector from the BACnet communication module (Figure 4).
5. Grasp the BACnet communication module and carefully pull it from the unit controller (or from an adjacent module, if it is attached to one).
6. Install the new BACnet communication module:
1. Remove power from the unit controller.
2. Carefully remove the blue plastic knockout strip on the far left end of the unit controller itself (or additional module, if present). Figure 7 shows the knockout strip after it has been removed. NOTE: To prevent damage to the unit controller, insert a small flathead screwdriver or similar tool into the tab on the bottom of the unit controller and pull the screwdriver away from the controller.
3. Carefully remove the blue plastic knockout strip on the right side of the BACnet communication module.
4. Insert the board-to-board connector into the BACnet communication module. Note that it only fits one way and that the baffles must line up with corresponding slots in BACnet communication module and the unit controller (Figure 7 and Figure 8).
7. Insert a CAT 5 Ethernet cable into the communication module's network connector (Figure 4).
8. Apply power to the unit controller.

NOTE: The unit controller automatically resets itself approximately 30 seconds after power has been applied to it. This reset is necessary so that the BACnet communication module can synchronize with the unit controller.

9. Set the Unit On/Off Switch to "On" from inside the control panel of the unit.

Network Configuration

The following section describes how to configure the BACnet IP communication module for BAS network integration. Follow these instructions to set addressing parameters for the BACnet communication module using the MicroTech III chiller unit controller. Configuration varies depending on the structure of your network and BACnet broadcasting requirements for IP subnets.

BACnet IP Network Types

Single IP Subnet

In BACnet/IP networks with only IP subnet (IP domain), broadcast messages from a device (ex. 172.16.255.255 or 0xBAC0) are sent to all other subnet members as IP broadcasts without requiring any additional configuration.

Multiple IP Subnets

A BACnet/IP network may consist of multiple IP subnets assigned the same BACnet network number. In this case, a BBMD (BACnet Broadcast Management Device) allows broadcasts to be transmitted to all other BBMDs on the BACnet network. BBMDs allow devices on one network to distribute broadcasts, or communicate, across multiple subnets. A BBMD also provides for foreign device registration. This allows a device on one network to communicate with a device on another network by using the BBMD to forward and route the messages.

The BACnet communication module can be registered as a BBMD device. This is done by registering the IP Address and subnet mask of the communication module as a Foreign Device with the BBMD.

DHCP Networks

BACnet IP networks with DHCP use a server (typically a router or gateway) to automatically request network configuration parameters, such as IP addresses, to all devices. DHCP-enabled networks eliminate the need for a user to configure these settings manually since IP Addresses and other parameters are determined dynamically by the server.

There are several important aspects to consider with DHCP-enabled networks:

BACnet IP Configuration

The BACnet communication module is configured using the keypad/display on the unit controller. Table 3 describes the available BACnet IP network parameters used to establish communication between the unit controller and the BAS. The items shown in bold text are required for minimum network configuration.

Refer to the applicable MicroTech III Chiller Unit Controller Operation Manual (see Reference Documents) for additional information on using the keypad/display to adjust parameters and set defaults. Systems integrators should refer to Protocol Document ED 15120 for descriptions of the available BACnet objects (www.DaikinApplied.com).

A preview of the basic procedure is listed directly below, followed by detailed instructions for each step. If your IP network does not require DHCP to be enabled, refer to Configure Parameters for non-DHCP Networks. If your IP network is DHCP-enabled, refer to Configure Parameters for DHCP Networks

1. Disable the chiller
2. Enter the password
3. Non-DHCP networks: Set DHCP to "Off" and then modify the Given IP Address, IP Mask, and IP Gateway (typically during initial configuration only.) See Configure Parameters for non-DHCP Networks section
4. DHCP networks: See Configure Parameters for DHCP Networks section
5. Set other network parameters as required
6. Save changes and cycle power to the unit controller
7. Enable the chiller

Disable the Chiller

1. Set the Unit On/Off Switch to "Off" from inside the control panel of the unit. See Figure 6 for switch location.

Enter Password

1. If you have not already entered a password and are on the Main Menu, turn the circular knob on the unit controller (Figure 9) until Enter Password is highlighted from the menu list (Figure 10). If you have already entered a password, skip to Step 4.
2. Select Enter Password by pressing down on the circular knob.

NOTE: If you are not at the Main Menu and need to enter a password, press the Back button from any other menu screen until you reach the Main Menu and then follow Steps 1 and 2.

3. Enter Password 5321 and then press Enter.
4. Scroll down to View/Set Unit and press Enter.
5. Scroll down to the BACnet IP Setup menu and press Enter.

NOTE: The BACnet IP Setup menu only appears if a BACnet communication module is installed correctly (see Installation and Mounting section). If the BACnet communication module is installed correctly and this menu still does not appear, cycle power to the unit controller and repeat the procedure above.

Figure 9: Unit Controller Main Features

Figure 9 illustrates the main features of the MicroTech III Unit Controller's interface, including the circular knob used for navigation and selection, and the 'Back' button. It shows a sample menu with options like 'Enter Password' and 'Unit Status'.

Figure 10: BACnet IP Setup Menu: Enter Password

Figure 10 displays the unit controller's screen showing the 'Main Menu' with 'Enter Password' highlighted, indicating the current password entry state.

Configure Parameters for non-DHCP Networks

Follow these steps if your BACnet IP network requires static IP addressing for non-DHCP networks.

NOTE: The chiller should be disabled and with a valid password having been entered before proceeding.

1. Set DHCP to Off.
1. From the BACnet IP Setup menu, turn the knob clockwise until DHCP is highlighted and then press Enter (Figure 12).
2. Turn the knob counter-clockwise until DHCP = Off and then press Enter.
2. Change the default Given IP Address (Gvn IP) to match the Actual IP Address (Act IP) as specified by the BAS and/or Network Administrator (Figure 11 and Figure 12).
1. If all three digits of all four octets have been modified, proceed to step b. Otherwise, if all three digits of all four octets have not been modified (ex. 172.16.1.2) and the last octet has been entered, turn the knob clockwise until a blank space appears (i.e. the space character) and press Enter.
2. Navigate back to the BACnet IP Setup menu by pressing the Back button.
3. Scroll down to change the default Given Subnet Mask (Gvn Msk) to match the Actual Subnet Mask (Act Msk) as specified by the BAS and/or Network Administrator (Figure 11 and Figure 12).
1. If all three digits of all four octets have been modified, proceed to step b. Otherwise, if all three digits of all four octets have not been modified (ex. 255.255.0.0) and the last octet has been entered, turn the knob clockwise until a blank space appears (i.e. the space character) and press Enter.
2. Navigate back to the BACnet IP Setup menu by pressing the Back button.

Figure 11: BACnet IP Setup Menu: Given IP Address, Subnet Mask, and IP Gateway

Figure 11 presents the BACnet IP Setup menu screen on the unit controller, showing fields for 'Given IP Address' (Gvn IP), 'Given Subnet Mask' (Gvn Msk), 'Given IP Gateway' (Gvn Gwy), and 'Unit Support' (e.g., English).

Figure 12: BACnet IP Setup Menu: Actual IP Address, Subnet Mask, and IP Gateway

Figure 12 displays another BACnet IP Setup menu screen, showing the 'DHCP' status (On/Off), 'Actual IP Address' (Act IP), 'Actual Subnet Mask' (Act Msk), and 'Actual Gateway' (Act Gwy).

Configure Parameters for DHCP Networks

Follow these steps if your BACnet IP network is DHCP-enabled.

NOTE: The chiller should be disabled with a valid password having been entered before proceeding.

1. Set DHCP to On.
1. From the BACnet IP Setup menu, turn the knob clockwise until DHCP is highlighted and then press Enter.
2. Turn the knob counter-clockwise until DHCP = On and then press Enter.
2. Change any additional parameters as required for your network (Table 3).
3. Set ApplyIPChgs to Yes to save the changes and cycle power to the unit controller (Figure 13).
4. Navigate back to the BACnet IP Setup menu to verify the parameter setting(s). This procedure may take several minutes while the BACnet communication module powers up.
5. Set the Unit On/Off Switch to "On" from inside the control panel of the unit.

Figure 13: BACnet IP Setup Menu: Apply Changes

Figure 13 shows the BACnet IP Setup menu screen for 'Apply Changes', indicating options like 'Apply Changes' (Yes/No), 'Name', 'Device Instance', and 'UDP Port'.

NOTE: If the unit controller application software requires a field upgrade, the network configuration parameters revert to their default values. Please contact the Chiller Technical Response Center at 540-248-9239 (techresponse@daikinapplied.com) for assistance.

Table 3: Network Parameter Settings

Table 3 defines the network parameters of the BACnet IP communication module that are available on the Main Menu_View/Set Unit_BACnet IP Setup menu of the unit controller keypad/display. Change parameters as required for your network.

¹ Parameter must be configured via the unit controller keypad/display.

² The BACnet communication module defaults to DHCP-enabled. See your system integrator for additional information regarding BACnet IP networks with DHCP functionality.

³ The parameters shown in boldface text are required for minimum network configuration.

Parts and Service

Troubleshooting

Follow these procedures if you can control the MicroTech III chiller unit controller from its keypad/display, but you are not able to communicate with the unit via the network.

Network Parameters

• Verify that network parameters are set correctly as shown in Table 3.
• Make sure there are no duplicate devices on the network (Device Name and Device ID, for example).
• Check the use of the character # at the end of each IP setting. There should not be a "space" at the end.
• Be aware that the unit controller must be restarted when a "Reset Required" message appears. Power off/on the unit controller after all settings have been configured and then select Apply Changes.

Network wiring

• Check for loose connections and that devices are plugged in properly.
• Confirm that the link light for each device's connector is on, which indicates that information is capable of being sent and received.

Compatibility

• Verify the unit controller software application version and communication module BSP version.

Network Communications

• Confirm that the DHCP parameter is set to "Off" when a static IP address is being used for non-DHCP networks.
• Check that the defined UDP port, e.g. BAC0, is open in the firewall.
• Verify if BBMDs are required. BBMD must be used if the BACnet client and BACnet server are located on different subnets. Use the command "tracert" to check this. Tracert shows all stations used to forward the signal to another segment. See Figure 14 for the result of a BBMD network as displayed by using the "tracert" command.

Figure 14: Example of Confirmed BBMD Network

Figure 14 shows a command prompt output from a 'tracert' command, which traces the network path to a specific IP address. This output is used to verify network routing and potential BBMD requirements.

Security

(No specific content found for Security in the provided text, but listed in TOC)

Use the standard TCP/IP suite of tools to check connectivity with other devices. Ping the unit controller using these steps if the communication module is not working:

Figure 15: Successful Ping Result

Figure 15 displays a successful 'ping' test result from a Windows command prompt. It shows that packets were sent and received, with minimal round-trip times, confirming network connectivity to the specified IP address.

If you get a response from that IP address, you are connected to the BACnet communication module. If the ping fails and you do not get a response, then there is an issue with the network or the IP settings. Verify the BACnet communication module and the PC network settings.

Contact the Daikin Applied Controls Customer Support Group at 866-462-7829 for additional assistance, if necessary.

Parts

To find your local parts office, visit www.DaikinApplied.com or call 800-37PARTS (800-377-2787).

Daikin Applied Training and Development

Now that you have made an investment in modern, efficient Daikin equipment, its care should be a high priority. For training information on all Daikin HVAC products, please visit us at www.DaikinApplied.com and click on Training, or call 540-248-9646 and ask for the Training Department.

Warranty

All Daikin equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product Warranty. Consult your local Daikin Applied Representative for warranty details. To find your local Daikin Applied Representative, go to www.DaikinApplied.com.

Aftermarket Services

To find your local parts office, visit www.DaikinApplied.com or call 800-37PARTS (800-377-2787).

To find your local service office, visit www.DaikinApplied.com or call 800-432-1342.

This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.DaikinApplied.com.

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