Daikin MicroTech Chiller Unit Controller BACnet IP Communication Module

Overview

This manual provides comprehensive information for the installation and maintenance of the Daikin MicroTech Chiller Unit Controller BACnet IP Communication Module. It details the module's integration into building automation systems via BACnet IP, its features, specifications, and network configuration procedures. The manual also includes troubleshooting guidance and parts information.

Supported Chiller Models

• Models AGZ and AMZ Trailblazer® Air-cooled Scroll Chiller
• Models AWS and AWV Pathfinder® Air-cooled Screw Chiller
• Model ADS Air-cooled Global Screw Chiller
• Model WME, B Vintage, Magnitude® Magnetic Bearing Centrifugal Chiller
• Model WWV, Navigator® Water-cooled Screw Chiller

Features

• Integration into a building automation and control system via BACnet IP (B-AAC profile and BBMD)
• Simple attachment to a MicroTech 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

General

• Dimensions: W x H x D: 1.77 x 4.33 x 2.95 in (45 x 110 x 75 mm)
• Weight: 3.5 oz (98 g)
• Material: Base - plastic, pigeon-blue; Housing - plastic, light-gray
• Operating Temperature: -40-158°F (-40 – 70°C)
• Humidity: <90% RH
• Atmospheric pressure: Min. 10 psi (70kPa), corresponding to max. 9,842 ft (3,000 m) above sea level

Storage and Transportation

• Temperature: -40 - 158°F (-40 - 70°C)
• Humidity: <95% RH
• Atmospheric pressure: Min. 3.77 psi (26 kPa), corresponding to max. 32,808 ft (10,000 m) above sea level

Electrical

• Power: Supplied via unit controller, DC 5 V (+5% / -5%), max. 270 mA
• Network connection: Ethernet 10/100 over CAT 5 cable, RJ-45 port, 8-pin connector

Additional Components

• Board-to-board connector: 10-pin plug between communication module and unit controller

Agency Listings

• US: UL916, UL873
• Canada: CSA C22.2M205
• Europe: EMC directive 2004/108/EC, Low-voltage directive 2006/95/EC, RoHS directive 2002/95/EC

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 Chiller Unit Controller. It may attach to an existing module if one is already connected.

Indicators

BSP LED

Indicates the communication state between the BACnet communication module and the MicroTech Chiller Unit Controller.

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

Indicates the communication status between the BACnet communication module and the BACnet IP network.

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.

Board-To-Board Connector

The 10-pin board-to-board connector connects the Micro Tech Chiller Unit Controller to the BACnet communication module.

Installation and Mounting

This section describes how to field install a new BACnet IP communication module or replace an existing module on the MicroTech 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
• 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.
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). 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.
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 the BACnet communication module and the unit controller.
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.
8. Apply power to the unit controller. 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.

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.
2. Remove power from the unit controller.
3. Locate the BACnet communication module to the left of the unit controller.
4. Gently pull the network cable connector from the BACnet communication module.
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 (follow steps 1-9 from "Installing a new Communication Module").
7. Insert a CAT 5 Ethernet cable into the communication module's network connector.
8. Apply power to the unit controller. 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

This section describes how to configure the BACnet IP communication module for BAS network integration. 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 0xBACO) are sent to all other subnet members as IP broadcasts without requiring any additional configuration.

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.

Aspects to consider with DHCP-enabled networks:

• BBMDs: DHCP cannot be used together with BBMDs, as the IP addresses are configured as static addresses and cannot change during operation.
• Alarm recipient: In BACnet, alarm recipients are entered with their "Device Object Identifier" or their BACnet address. The IP address is part of the BACnet address and may not be changed for the alarm recipient. For this reason, option "Device Object Identifier" must always be used.
• Access rights: If access rights are assigned based on IP address, such as firewalls, the address must be static. Access rights are based off of the UDP Port Number (ex. UDP 47808) or the MAC Address of the BACnet communication module.
• IP version: The BACnet communication module supports IP Version 4, (i.e. IP devices with 32 bit addresses).

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, allowing 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.

BACnet IP Configuration

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

Refer to the applicable chiller Installation, Operation and Maintenance (IOM) Manual 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).

Basic Procedure:

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.
4. DHCP networks: Refer to 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.

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.
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.
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.
4. Scroll down to change the default Given IP Gateway (Gvn Gwy) to match the Actual IP Gateway (Act Gwy) as specified by the BAS and/or Network Administrator.
5. Change any additional parameters as required for your network.
6. Set ApplyIPChgs to Yes after all parameter settings have been modified. Note: Setting ApplyIPChgs to Yes saves all changes and then cycles power to the unit controller.
7. 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. Note: The Actual IP and Actual Mask values will display as zeros if the BACnet IP module does not recognize an active network connection at power-up. The Actual Gateway will be blank.
8. Set the Unit On/Off Switch to "On" from inside the control panel of the unit.

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.
2. Change any additional parameters as required for your network.
3. Set ApplyIPChgs to Yes to save the changes and cycle power to the unit controller.
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.

Network Parameters

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.

Troubleshooting

Follow these procedures if you can control the MicroTech 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

• If the BACnet Status in the BACnet IP menu shows "Init" for more than 5 minutes, update BACnet firmware to 11.42 or newer.
• If the BACnet module demonstrates a pattern of repeatedly losing and reestablishing communication with the BAS, update BACnet firmware to 11.42 or newer.
• 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. BACO, 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.
• For a BACnet IP module with BSP 11.21 and earlier, 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: Select Start > Run on the Windows start bar, enter C:\ping XX.XX.XX.XX and press Enter.

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.

NOTE: BACnet BSP 11.22 and newer do not support Ping attempts.

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

For training information on all Daikin Applied HVAC products, please visit www.DaikinApplied.com and click on Training, or call 540-248-9646 and ask for the Training Department.

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.

Products manufactured in an ISO Certified Facility.