Toshiba BMS-IFBN1281U-TR Service Manual

Bn interface

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BN interface

SERVICE MANUAL

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BMS-IFBN1281U-E

BMS-IFBN1281U-TR

FILE No. A10-2301-3

Revision 1: Mar., 2023

Revision 2: Oct., 2023

Revision 3: May, 2024

PRINTED IN JAPAN, May, 2024 TBEX

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Page 1 FILE No. A10-2301-3 Revision 1: Mar., 2023 Revision 2: Oct., 2023 BN interface Revision 3: May, 2024 SERVICE MANUAL Model name: BMS-IFBN1281U-E BMS-IFBN1281U-TR PRINTED IN JAPAN, May, 2024 TBEX...
Page 2 2 Hardware Specifications ..........7 2-1. BMS-IFBN1281U-E, BMS-IFBN1281U-TR......7 2-2.
Page 3 15-1. BMS-IFBN640TLE, BMS-IFBN640TLE-IN ......158 15-2. BMS-IFBN1280U-E, BMS-IFBN1280U-TR, BMS-IFBN1280U-IN ..159 Installation Manual (BMS-IFBN1281U-E, BMS-IFBN1281U-TR) ....160...
Page 4 BN interface Service Manual Precautions for safety The following instructions must be observed. • Carefully read these "Precautions for Safety" before service, and perform service work safely. • These precautions contain important information regarding safety. • After service work, carry out an operation trial to confirm that there are no problems, and explain to the customer how to operate and maintain the system.
Page 5 BN interface Service Manual Trademarks ® • BACnet is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). ® • Ethernet is a registered trademark of Xerox Co., Ltd. • microSD is a registered trademark of SD Card Association. ®...
Page 6 BN interface Service Manual Product Overview BN interface relays communications between Building Management Systems and VRF Systems in order to observe and control the VRF Systems from Building Management Systems. The communication protocol used between Building Management Systems and the BN interface is BACnet, an open network communication protocol for building automation. BACnet Protocol Revision is ANSI/ASHRAE Standard 135-2012 (Revision15).
Page 7 BN interface Service Manual Hardware Specifications 2-1. BMS-IFBN1281U-E, BMS-IFBN1281U-TR  Specifications BMS-IFBN1281U-E Model name BMS-IFBN1281U-TR Rated voltage 220-240 V AC 50/60 Hz Power supply Power consumption 10 W Operating temperature range 0°C to 40°C, 10% to 80% RH (no condensation) Storage temperature range −...
Page 8 BN interface Service Manual (Power adapter) 110.0±0.5 31.5 1500.0±20.0 FERRITE AS REQUIRED 33.0±0.5 30±5 29.6±0.5 WIRE NO:1185 +0.15 -0.0 GAUGE:16AWG (BLACK) Ø12.0±0.5 SPEC LABEL Ø5.5±0.1 +0.1 Ø2.5 REQUIREMENT Power cable is not supplied for the BN interface. Insert a two core power cord applicable to the standard of the country you use.
Page 9 BN interface Service Manual 2-2. Component Names  External component names Ethernet(LAN) Shutdown button LINK(Uh) 12V DCIN Name Function 12V DCIN Connect the power adapter (For service) Ethernet (LAN) Connect to the Building Management System Shutdown button Shutdown or switch to air conditioner search mode LINK(Uh) Connect the central control wiring...
Page 10 BN interface Service Manual  Internal component names SW100 Uh Line termination resistance setting switch bit1:use, bit2:not use Refer to " Termination resistance setting" (P.121) Shutdown button Shutdown function / air conditioner search mode function button Use this button to stop BACnet process and network process of the BN interface or to start up in the air conditioner search mode.
Page 11 BN interface Service Manual  LED names LED color POWER Power indicator RS485 Green Not use LINK1(Uh) Orange Uh Line communication status indicator LINK2(Uh) Orange Not use ERROR Uh Line communication error indicator Green BACnet communication status indicator, setting error indicator Link LED LAN port LED1 Green...
Page 12 BN interface Service Manual 2-3. Internal board block diagram CPU BOARD Ethernet (LAN) 12V DCIN RTC_BAT CR2032 battery CN1 (not used) TU2C-LINK communication board Shutdown button CN08 CPU BOARD CN21 12V DCOUT LINK (Uh) 12V DCIN Phoenix Contact GMSTB 2.5/2-ST CPU BOARD ...
Page 13 BACnet Protocol Implementation Conformance Statement Vender Name Carrier Japan Corporation (ID:129) Product Name BN Interface Product Model Number BMS-IFBN1281U-E, BMS-IFBN1281U-TR BACnet Protocol Revision ANSI/ASHRAE Standard 135-2012 (Revision 15) Product Description: System Configuration Sample Control Wiring diagram Building Management System (3...
Page 14 BN interface Service Manual BACnet Standardized Device Profile (Annex L): BACnet Operator Workstation (B-OWS) BACnet Building Controller (B-BC) BACnet Advanced Application Controller (B-AAC) BACnet Application Specific Controller (B-ASC) BACnet Smart Sensor (B-SS) BACnet Smart Actuator (B-SA) BACnet Interoperability Building Blocks Supported (Annex K): BIBB Name Designation ReadProperty-B...
Page 15 BN interface Service Manual Standard Object Types Supported: Dynamically Dynamically Object-Type Supported Creatable Deletable Accumulator Analog Input  Analog Output  Analog Value Binary Input  Binary Output  Binary Value Calendar Command Device Event Enrollment File Group Loop Multi-state Input ...
Page 16 BN interface Service Manual Networking Options: Router, Clause 6 - List all routing configurations, e.g., ARCNET-Ethernet, Ethernet-MS/TP, etc. Annex H, BACnet Tunneling Router over IP BACnet/IP Broadcast Management Device (BBMD) Does the BBMD support registrations by Foreign Devices? Character Sets Supported: Indicating support for multiple character sets does not imply that they can all be supported simultaneously.
Page 17 BN interface Service Manual 3-2. Connectable Air Conditioners Item Specification Number of indoor units 128 units maximum In the following case, the number of indoor units is 64. - When used with controller for TCC-LINK old communication - When replacing a failed BMS-IFBN640TLE - When using the Room Air Conditioner TU2C-LINK Interface (TCB-SSRL011UUP-E) CAUTION A central address must be set for the indoor units.
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Page 24 BN interface Service Manual NOTE BN interface acquires indoor unit device information and creates an air conditioner settings file when air conditioner search mode is executed during a test run. As a result of this, some of the objects and settings listed are not output in the air conditioner settings file. (1) Ventilation Mode and Ventilation Fan speed can be used in the following situations.
Page 25 BN interface Service Manual • "Zone1 Temperature Setting" register cannot be used in the following cases. •When Zone1 Device Connection status is no use •When External Thermo Control status is use •When Frost protection operation is being performed •When AUTO TEMP operation is being performed •...
Page 26 BN interface Service Manual (2) RAC Interface is in the “Residential AC type” setting Function Monitor Controlling ON / OFF Operation mode Set Temperature Fan Speed *3 Louver swing/stop swing/stop Save operation rate *1 (Power serect) (Power serect) RAC Pure Filter ON/OFF RAC Hi-Power ON/OFF RAC ECO ON/OFF *2 RAC Quiet FCU ON/OFF...
Page 27 BN interface Service Manual NOTE Notes on controlling VRF Dx-coil controller (TCB-IFDMX01UP-E, TCB-IFDMR01UP-E). (1) VRF Dx-coil controller is in the “TA mode” or the "TF mode" setting Function Monitoring Controlling ON / OFF   Operation mode   Setting temperature ...
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Page 114 BN interface Service Manual Factory default settings Item Factory default setting IP address 192.168.1.100 IP address of BN interface Subnet mask 255.255.255.0 UDP port 47808 (0xBAC0) Device object instance number Use 1Byte of Last byte of IP Address number. Uh Line termination resistance select switch Indoor unit configuration setting 10 VRF indoor units (details below) Temperature unit (Celsius/Fahrenheit)
Page 115 BN interface Service Manual Central Control address Line address Indoor Unit address Indoor unit type undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined...
Page 116 BN interface Service Manual Central Control address Line address Indoor Unit address Indoor unit type undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined undefined...
Page 117 BN interface Service Manual Items included with the product BMS-IFBN1281U-E, BMS-IFBN1281U-TR Component Q'ty Remarks BN interface equipment Power adapter BN interface power supply (not include Power Cable) Pin terminal Uh Line caulked connectors Mounting bracket (DIN rail) Use screws to secure the unit in locations without DIN rails (walls, etc.)
Page 118 BN interface Service Manual Installation REQUIREMENT Do not install the unit in any of the following places. • Humid or wet place • Dusty place • Place exposed to direct sunlight • Place where there is a TV set or radio within one meter •...
Page 119 BN interface Service Manual  Installation Space and Maintenance Space A side space for connecting through cable inlets and an upper space for maintenance must be reserved before installation. The other sides can be adjacent to surrounding objects. 100 mm 100 mm...
Page 120 BN interface Service Manual Power and signal line connections  Cables Use the following cable for signal line connections. (Procured locally) Line Description Type 2-core shielded wires For Uh Line Wire size Refer to “Design of Control Wiring” (P.122 to P.125). Length LAN cable (higher than Category 5, UTP) Type...
Page 121 BN interface Service Manual Termination resistance setting • TU2C-LINK / TCC-LINK termination resistance setting ....<For TCC-LINK> Leave just 1 line of the termination resistance in the interface board of the outdoor unit (centre unit) ON, and turn all the others OFF. (Refer to the wiring diagram attached to the outdoor unit for the position of SW.) <For TU2C-LINK>...
Page 122 BN interface Service Manual  Design of Control Wiring Communication method and model name The TU2C-LINK model (U series) can be used together with previous models (other than U series). For details of the model and communication method, see the following table. Communication method TU2C-LINK (U series) TCC-LINK (other than U series)
Page 123 BN interface Service Manual When the connected outdoor unit is Super Multi u series (U series) Follow the wiring specifications in the table below even when there is a mix of U series and non-U series in the connected indoor units or remote controllers.
Page 124 BN interface Service Manual When the connected outdoor units are other than Super Multi u series (U series) Wiring specifications Communication line Item Control wiring between indoor and outdoor units and central control wiring 1.25 mm (up to 1000 m) Wire diameter 2.0 mm (up to 2000 m)
Page 125 BN interface Service Manual When connecting to a previous model light commercial, air to air heat exchanger, air to water heat pump, or general purpose equipment control interface Follow the wiring specifications in the table below even when there is a mix of U series and non-U series in the connected indoor units or remote controllers.
Page 126 BN interface Service Manual Startup and Shutdown 8-1. Startup The BN interface has no power switch. Plug the cable into the socket and then turn the socket on. The BN interface LED display changes as follows when it is powered. LED display changes at startup LED display changes at startup * Control interval (time length of 1 cell): 200 ms...
Page 127 BN interface Service Manual Test run To perform test run of the BN interface, BACnet communication settings and the equipment data of the connected indoor units are required.  Settings, descriptions and configuration method before test run Factory default Device Item Configuration method, device, software settings...
Page 128 BN interface Service Manual  Configuring settings (1) Turn on the BN interface, and wait until it reaches step 5 of the startup procedure. Refer to “Startup and Shutdown” for details. (2) Hold down the BN interface Shutdown button for at least 4 seconds. [LED-L1 Step1] (3) BN interface will start reading the equipment data of the indoor units.
Page 129 BN interface Service Manual 9-3. Search Results File (SearchObjectLog.tsv) Results of the air conditioner search are output in the search results file. These files are text files separated by tabs. Indoor unit detection result 1.Execution day/time..... (1)The date and time the search was executed 2.IP address........
Page 130 BN interface Service Manual Example 1: 5 indoor units, central control addresses 1 to 5, search completed normally 1.Execution day/time “2021/05/26 13:15:26.50” 2.IP address 192.168.1.100 3.No. of indoor units No. of outdoor header units , follower units 0 4.Message <Info> Outdoor unit search invalid. 5.TCC-LINK board information BN-I/F address 0x0401...
Page 131 BN interface Service Manual Example 2: Duplicate central control addresses, indoor unit information Ri** could not be acquired 1.Execution day/time “2021/05/26 13:15:26.50” 2.IP address 192.168.1.100 3.No. of indoor units No. of outdoor header units , follower units 0 4.Message <Info> Outdoor unit search invalid. 5.TCC-LINK board information BN-I/F address 0x0401...
Page 132 Obtaining the Engineering Tool ”Setting File Creation Software2” Engineering tool and manuals can be downloaded from the CARRIER JAPAN “THGP” website. (https://global-portal.toshiba-carrier.co.jp/software/global/bms) 10-1. IP Address Setting The default BN interface IP address is set when shipped. Change it using the engineering tool.
Page 133 BN interface Service Manual 10-2. BACnet Device Object Instance Number Setting The instance number of the BACnet Device object is set when shipped according to the following rule. Change the instance number using the engineering tool. • Use 1Byte of Last byte of IP Address number (1) Select “2: User Setting”...
Page 134 BN interface Service Manual 10-3. Acquiring the Search Results File (SearchObjectLog.tsv) Follow the “SearchObjectLog Download” function procedure in the engineering tool to download the search results file (SearchObjectLog.tsv) to a PC from the BN interface. “SearchObjectLog Download” function procedure • Execute the “Initialization Tool” submenu in the Tool menu on the Main Menu screen of the engineering tool. •...
Page 135 BN interface Service Manual • Execute the “SearchObjectLog Download” submenu in the Tool menu of the Initialization Tool. 10-4. Searching for the BN interface IP Address If you are unsure of the BN interface IP address, find it using the “IP Address Search” function. [IP Address Search] in the [Tool] menu...
Page 136 BN interface Service Manual Troubleshooting 11-1. During test runs Problem Cause Action No indoor units can be found The indoor units and outdoor units are Check that the indoor units and outdoor units (The number of indoor units turned off. are turned on.
Page 137 BN interface Service Manual Problem Cause Action A request frame was sent to • The IP Address or network mask setting is Check the following. the BN interface via BACnet wrong • Whether a response is sent when a ping communication but no command is sent from a PC.
Page 138 BN interface Service Manual 11-2. When starting up BN interface Problem Cause Action There is an error in the settings file. • Execute air conditioner search mode again. CAUTION The indoor units and outdoor units that are the target of the search must be turned on when air conditioner search mode is executed.
Page 139 BN interface Service Manual Problem Cause Action The status of an indoor unit When the BN interface and air conditioning Confirm whether power is being supplied to the acquired by BACnet management controller are not being used indoor and outdoor units. communication differs from together, the "LINK(Uh)"...
Page 140 BN interface Service Manual 11-4. Directly After Changing the microSD Card (Service Component) Problem Cause Action Startup step 1 The BN interface internal microSD card has Check that the microSD card is inserted The LED display does not malfunctioned. correctly. LED-L1 is unlit.
Page 141 BN interface Service Manual 11-6. Control and monitoring of air to water heat pump (ATW) Cause Solution Mode cannot be changed to cooling Operation modes are only heating and cooling. With cooling mode, status through operation mode setting. may be “no use” depending on the settings of ATW. Control of ATW does not work at all.
Page 142 BN interface Service Manual 11-7. Control and monitoring of Room Air Conditioner TU2C-LINK Interface (TCB-SSRL011UUP-E) Cause Solution • BN interface air conditioner search • If the settings of switches SW61 to SW64 have been changed on the RAC mode was executed, but RAC interface, execute the air conditioner search mode on the BN interface interface was not detected.
Page 143 BN interface Service Manual Replacing Service Parts 12-1. Replacing the microSD Card (1) Turn off the BN interface. (2) Remove the 4 screws on the front panel of the BN interface. Screw BN interface TU2C-LINK Ethernet (LAN) 12V DCIN (3) Push the microSD card into the slot until you hear a click and remove the card. Slot...
Page 144 BN interface Service Manual (4) Insert the microSD card into the slot and push it in until you hear a sound. Slot (5) Turn on the BN interface power, and operate as in a test run. CAUTION • Do not leave the card hanging out of the slot.
Page 145 BN interface Service Manual 12-2. Replacing the Power Adaptor (1) Turn off the BN interface, and replace the power adaptor. (2) Remove the ferrite core from the power cord. (3) Attach the ferrite core to the replacement power cord in the same way. (Power adapter) 110.0±0.5 31.5...
Page 146 BN interface Service Manual Service Component List For BMS-IFBN1281U-E, BMS-IFBN1281U-TR Component name Component code Outline Quantity used microSD card 4316W077 Specialized microSD card containing BN interface software Power adaptor 4316V581 Power adaptor for the BN interface CAUTION • The microSD card cannot be used with Windows. Do not insert it into a Windows PC. If the microSD card is inserted into a Windows PC, the contents may be corrupted.
Page 147 BN interface Service Manual Systems in which the BN interface is used in conjunction with another air conditioning controller This chapter explains about systems in which the BN interface is used in conjunction with another air conditioning controller. NOTE As for the version of the Setting File Creation Software2, use v1.6.0.0 (March, 2023) or later. 14-1.
Page 148 BN interface Service Manual 14-2-2. Preparation for the test run When using multiple BN interfaces, set different numbers for the IP addresses and the BACnet Device object instance numbers so that they do not overlap. IP address Instance number for BACnet Device object BN interface No.
Page 149 BN interface Service Manual In the Setting File Creation Software2, enter the IP address for the BN interface and set the BACnet Device object numbers. Once these have been entered, upload the settings file to the BN interface from the Setting File Creation Software2. Once the settings file has been uploaded, the BN interface will automatically restart.
Page 150 BN interface Service Manual 14-3. System for Combination Use with Smart BMS Manager 14-3-1. System configuration Wire the devices as shown below: Building Management System Line-1 Line-2 BN interface TU2C-LINK Ethernet (LAN) Uh Line BN interface TU2C-LINK Ethernet (LAN) Uh Line 14-3-2.
Page 151 BN interface Service Manual 14-3-3. Procedure for test run (1) Set the line addresses, unit addresses, and central control address for the indoor units. (2) Conduct a test run of the Smart BMS Manager. (3) Turn off the power to the Smart BMS Manager. (4) Power on the BN interface.
Page 152 BN interface Service Manual NOTE Before executing air conditioner search mode, be sure to turn off the power to Smart BMS Manager. If a communication collision occurs between Smart BMS Manager and the BN interface at a Uh Line bus, proper communication with the indoor units will be interrupted, preventing creation of the settings file.
Page 153 BN interface Service Manual 14-4. System for Combination Use with Touch Screen Controller (BMS- CT2560U-E) 14-4-1. System configuration Wire the devices as shown below: Building Management System TOUCH SCREEN CONTROLLER Line-1 Line-2 BN interface TU2C-LINK Ethernet (LAN) Uh Line BN interface TU2C-LINK Ethernet (LAN) Uh Line 14-4-2.
Page 154 BN interface Service Manual 14-4-3. Procedure for test run (1) Set the line addresses, unit addresses, and central control address for the indoor units. (2) Conduct a test run of the Touch Screen Controller. (3) Turn off the power to the Touch Screen Controller. (4) Power on the BN interface.
Page 155 BN interface Service Manual NOTE Before executing air conditioner search mode, be sure to turn off the power to Touch Screen Controller. If there is a communication collision on Uh Line between the Touch Screen Controller and BN interface, the indoor units cannot be properly communicated with, and a setting file cannot be created.
Page 156 BN interface Service Manual 14-5. System for Combination Use with Central Remote Controller (TCB- SC640U-E) If using 65 or more indoor units, use 2 central remote controllers. 14-5-1. System configuration Wire the devices as shown below: Building Management System 1st Central Controller BN interface 2nd Central Controller TU2C-LINK Ethernet (LAN)
Page 157 BN interface Service Manual In the Setting File Creation Software2, enter the IP address for the BN interface and set the BACnet Device object numbers. Once these have been entered, upload the settings file to the BN interface from the Setting File Creation Software2. Once the settings file has been uploaded, the BN interface will automatically restart.
Page 158 BN interface Service Manual Old BN interface product replacement 15-1. BMS-IFBN640TLE, BMS-IFBN640TLE-IN The following explains the setting procedure for using BMS-IFBN1281U-E as BMS-IFBN640TLE in the case of BMS- IFBN640TLE failure. The same applies for BMS-IFBN640TLE-IN . Product before replacement Product after replacement BMS-IFBN640TLE BMS-IFBN1281U-E BMS-IFBN640TLE-IN...
Page 159 Product before replacement Product after replacement BMS-IFBN1280U-E BMS-IFBN1281U-E BMS-IFBN1280U-TR BMS-IFBN1281U-TR BMS-IFBN1280U-IN BMS-IFBN1281U-E (1) Following the procedure described in "10 Engineering Tool", create a setting file for BMS-IFBN1281U-E with Setting File Creation Software 2. In the case of product replacement, among "System" settings, for "Central controller ID setting", select "ID 1". See Chapter 14 when another (2) Using Setting File Creation Software 2, upload the setting file to BMS-IFBN1281U-E.
Page 160 Installation Manual (BMS-IFBN1281U-E, BMS-IFBN1281U-TR)
Page 161 For commercial use BN interface Model name: BMS-IFBN1281U-E BMS-IFBN1281U-TR Multilingual installation manual, license agreement and license information [ългарски] Изтегляне на Ръководство за монтаж, Лицензионно споразумение и Лицензна информация / [Česky] Stažení Montážní příručky, Licenční smlouvy a Licenčních informací / [Dansk] Download installationsvejledning, licensaftale og licensinformation / [Deutsch] Installationshandbuch, Lizenzvereinbarung und Lizenzinformation herunterladen / [Ελληνικά] Λήψη...
Page 162 BN interface Installation Manual “AEEE Yönetmeligine Uygundur.” Contents Precautions for safety ........... . 2 Introduction.
Page 163 BN interface Installation Manual Precautions for safety The following instructions must be observed. • Carefully read these "Precautions for Safety" before installation, and perform installation work safely. • These precautions contain important information regarding safety. • After installation work, carry out an operation trial to confirm that there are no problems, and explain to the customer how to operate and maintain the system.
Page 164 BN interface Installation Manual Introduction  Overview The BN interface refers to equipment used for controlling Building Management Systems (Procured locally) and air conditioners “TU2C-LINK Uh Line (hereinafter, referred to as Uh Line) compatible models” through communications via a network to enable central control.
Page 165 BN interface Installation Manual (Power adapter) 110.0±0.5 31.5 1500.0±20.0 FERRITE AS REQUIRED 33.0±0.5 30±5 29.6±0.5 WIRE NO:1185 +0.15 -0.0 GAUGE:16AWG (BLACK) Ø12.0±0.5 SPEC LABEL Ø5.5±0.1 +0.1 Ø2.5 REQUIREMENT Power cable is not supplied for the BN Interface. Insert a two core power cord applicable to the standard of the country you use. ...
Page 166 BN interface Installation Manual Installation REQUIREMENT Do not install the unit in any of the following places. • Humid or wet place • Dusty place • Place exposed to direct sunlight • Place where there is a TV set or radio within one meter •...
Page 167 BN interface Installation Manual  Installation Space and Maintenance Space A side space for connecting through cable inlets and an upper space for maintenance must be reserved before installation. The other sides can be adjacent to surrounding objects. 100 mm 100 mm...
Page 168 BN interface Installation Manual Power and signal line connections  Cables Use the following cable for signal line connections. (Procured locally) Line Description Type 2-core shielded wires For Uh Line Wire size Refer to "Design of Control Wiring" (P.10 to P.13) Length LAN cable (higher than Category 5, UTP) Type...
Page 169 BN interface Installation Manual  Example of System Wiring Connections BN interface Power adapter Power Supply Touch Screen Controller BMS-CT2560U-E, -TR LINK2 LINK1 Building Management System Uh Line / TCC-LINK Outdoor unit Outdoor unit Indoor unit Remote Remote Indoor unit controller controller...
Page 170 BN interface Installation Manual Termination resistance setting • TU2C-LINK / TCC-LINK termination resistance setting ....<For TCC-LINK> Leave just 1 line of the termination resistance in the interface board of the outdoor unit (centre unit) ON, and turn all the others OFF. (Refer to the wiring diagram attached to the outdoor unit for the position of SW.) <For TU2C-LINK>...
Page 171 BN interface Installation Manual  Design of Control Wiring Communication method and model name The TU2C-LINK model (U series) can be used together with previous models (other than U series). For details of the model and communication method, see the following table. Communication method TU2C-LINK (U series) TCC-LINK (other than U series)
Page 172 BN interface Installation Manual When the connected outdoor unit is Super Multi u series (U series) Follow the wiring specifications in the table below even when there is a mix of U series and non-U series in the connected indoor units or remote controllers.
Page 173 BN interface Installation Manual When the connected outdoor units are other than Super Multi u series (U series) Wiring specifications Communication line Item Control wiring between indoor and outdoor units and central control wiring 1.25 mm (up to 1000 m) Wire diameter 2.0 mm (up to 2000 m)
Page 174 BN interface Installation Manual When connecting to a previous model light commercial, air to air heat exchanger, air to water heat pump, or general purpose equipment control interface Follow the wiring specifications in the table below even when there is a mix of U series and non-U series in the connected indoor units or remote controllers.
Page 175 BN interface Installation Manual Settings 3-1. Switch setting SW100 Uh Line termination resistance setting switch bit1:use, bit2:not use Refer to "Termination resistance setting" (P.9) Shutdown button Shutdown function / air conditioner search mode function button Use this button to stop BACnet process and network process of the BN interface or to start up in the air conditioner search mode.
Page 176 BN interface Installation Manual 3-2. LED LED color POWER Power indicator RS485 Green Not use LINK1(Uh) Orange Uh Line communication status indicator LINK2(Uh) Orange Not use ERROR Uh Line communication error indicator Green BACnet communication status indicator, setting error indicator Factory default settings Item Factory default setting...
Page 177 BN interface Installation Manual Test run To perform test run of the BN interface, BACnet communication settings and the equipment data of the connected indoor units are required. Items to be set during trial run Equipment Item Setting method Use the DIP switch on the outdoor Outdoor unit Uh Line address Line address...
Page 178 BN interface Installation Manual 5-2. Setting up equipment data in the indoor unit Obtain the equipment data of the indoor unit that is controlled by the BN interface from the indoor unit via the Uh Line communication cable. Preparing to set up equipment data in the indoor unit •...
Page 179 BN interface Installation Manual 5-3. Cause of problem occurring during setup Cause of problem Cause Action The indoor and outdoor units have not been Make sure that indoor and outdoor units are turned on. turned on. The indoor and outdoor units are being Make sure that indoor and outdoor units are initialized and it is not possible to turned on.
Page 180 ©2024 Carrier. All Rights Reserved. Revision record Number The contents of modification Page Date First issue Feb., 2023 Added mention of RAC interface 13, 23, 26, (Residential AC type) 99-107, 142 Revision 1 Mar., 2023 Added the symbol (I) to the product serial plate.

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