Intesis INMBSDAI001I000 User guide

Compatible with Domestic line models

USER MANUAL

Issue date: 12/2017 r2.3 ENGLISH

Intesis

INMBSDAI001I000

User’s Manual r2.3 EN

This information is subject to change without notice

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Important User Information

Disclaimer

The information in this document is for informational purposes only. Please inform HMS Industrial Networks of any inaccuracies or omissions found in this document. HMS Industrial Networks disclaims any responsibility or liability for any errors that may appear in this document.

HMS Industrial Networks reserves the right to modify its products in line with its policy of continuous product development. The information in this document shall therefore not be construed as a commitment on the part of HMS Industrial Networks and is subject to change without notice. HMS Industrial Networks makes no commitment to update or keep current the information in this document.

The data, examples and illustrations found in this document are included for illustrative purposes and are only intended to help improve understanding of the functionality and handling of the product. In view of the wide range of possible applications of the product, and because of the many variables and requirements associated with any particular implementation, HMS Industrial Networks cannot assume responsibility or liability for actual use based on the data, examples or illustrations included in this document nor for any damages incurred during installation of the product. Those responsible for the use of the product must acquire sufficient knowledge in order to ensure that the product is used correctly in their specific application and that the application meets all performance and safety requirements including any applicable laws, regulations, codes and standards. Further, HMS Industrial Networks will under no circumstances assume liability or responsibility for any problems that may arise as a result from the use of undocumented features or functional side effects found outside the documented scope of the product. The effects caused by any direct or indirect use of such aspects of the product are undefined and may include e.g. compatibility issues and stability issues.

Intesis

INMBSDAI001I000

User’s Manual r2.3 EN

This information is subject to change without notice

URL https://www.intesis.com

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Modbus RTU (EIA-485) Interface for Daikin air conditioners. Compatible with Domestic line models.

ORDER CODE

LEGACY ORDER CODE

INMBSDAI001I000

DK-AC-MBS-1

Intesis

INMBSDAI001I000

User’s Manual r2.3 EN

This information is subject to change without notice

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INDEX

1. Presentation ........................................................................................................ 5

2. Connection .......................................................................................................... 6

2.1 Connect to the AC indoor unit ........................................................................... 6

2.2 Connection to the EIA-485 bus .......................................................................... 6

3. Quick Start Guide ................................................................................................. 7

4. Modbus Interface Specification ............................................................................... 8

4.1 Modbus physical layer ...................................................................................... 8

4.2 Modbus Registers ............................................................................................ 8

4.2.1 Control and status registers .......................................................................... 8

4.2.2 Configuration Registers .............................................................................. 10

4.2.3 Considerations on Temperature Registers ..................................................... 10

4.3 DIP-switch Configuration Interface .................................................................. 13

4.4 Implemented Functions .................................................................................. 16

4.5 Device LED indicator ...................................................................................... 16

4.6 EIA-485 bus. Termination resistors and Fail-Safe Biasing mechanism ................... 16

5. Mechanical and electrical features .......................................................................... 17

6. List of supported AC Unit Types ............................................................................. 18

7. Error Codes ........................................................................................................ 19

Intesis

INMBSDAI001I000

User’s Manual r2.3 EN

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1. Presentation

The INMBSDAI001I000 interface allows a complete and natural integration of

Daikin air conditioners into Modbus RTU (EIA-485) networks.

Compatible with Domestic line models.

Reduced dimensions. 93 x 53 x 58 mm

3.7” x 2.1” x 2.3”

• Quick and easy installation.

Mountable on DIN rail, wall, or even inside the indoor unit on some models of AC.

• External power not required.

• Direct connection to Modbus RTU (EIA-485) networks. Up to 63 INMBSDAI001I000

devices can be connected on the same network.

INMBSDAI001I000 is a Modbus slave device.

• Direct connection to the AC indoor unit. Up to 1 AC indoor units can be connected to

INMBSDAI001I000. The cable for this connection is also supplied.

• Configuration from both on-board DIP-switches and Modbus RTU.

• Total Control and Supervision.

• Real states of the AC unit's internal variables.

• Allows simultaneous use of the AC’s remote controls and Modbus RTU.

* Up to 63 Intesis devices can be installed in the same Modbus RTU bus. However, depending on the configured speed, the

installation of Modbus Repeaters may be required

• SCADA

• PLC

• DDC

• BMS

• HMI

• Controller

• etc

Up to 63 AC indoor units*

Modbus RTU EIA-485 network

Modbus RTU

Master

device

INMBSDAI001I000

INMBSDAI001I000 INMBSDAI001I000

Intesis

INMBSDAI001I000

User’s Manual r2.3 EN

This information is subject to change without notice

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2. Connection

The interface comes with a specific cable and connectors to establish direct connection to the AC indoor unit. It comes as well with a plug-in terminal block of 2 poles to establish direct connection with the Modbus RTU EIA-485 network.

2.1 Connect to the AC indoor unit

To connect the INMBSDAI001I000 interface with the AC indoor unit you must follow these steps:

Disconnect Mains Power from the AC unit. Open the front cover of the indoor unit to have access to the electronic circuit. Once you arrive at the electronic circuit, locate the socket connector marked as S21.

Take the cable that comes with the interface, insert one of its connectors (the one installed in the shortest uncovered part) into the socket of the INMBSDAI001I000, and the other connector (the one installed in the largest uncovered part) to the socket S21 of the AC unit's electronic circuit. Remember that the INMBSDAI001I000 must also be connected to the Modbus RTU EIA-485 network. Close the AC indoor unit's front cover again to finish the connection.

Do not modify the length of the cable supplied with the interface, it may affect the correct interface´s operation.

2.2 Connection to the EIA-485 bus

Connect the EIA-485 bus wires to the plug-in terminal block (the one of two poles) of INMBSDAI001I000 and keep the polarity on this connection (A+ and B-). Make sure that the maximum distance to the bus is 1,200 meters (3,937 ft). The loop or star typologies are not allowed in the case of the EIA-485. A terminator resistor of 120Ω must be present at each end of the bus to avoid signal reflections. The bus needs a fail-safe biasing mechanism (see section 4.6 for more details).

S21

AC indoor unit

Electronic circuit board

200 mm / 7.9”

40 mm / 1.6”

Connection cable supplied within the interface.

90 mm / 3.5”

Modbus RTU

EIA-485

Bus

EIA485

A B

AC Unit

53 mm / 2.1”

Use these holes to attach the cable using the staple and screw provided with the interface.

For wall mounting, extract the upper and lower staples until you listen the "click".

Fixing screw

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3. Quick Start Guide

1. Disconnect the air conditioning from the Mains Power.

2. Attach the interface next to the AC indoor unit (wall mounting) following the

instructions of the diagram below or install it inside the AC indoor unit (respect the safety instructions given above).

3. Connect the connection cable included with the interface between the interface and

the AC indoor unit following the instructions of the diagram.

4. Connect the EIA-485 bus to the connector EIA485 of the interface.

5. Close the AC indoor unit.

6. Check the DIP-Switch configuration of the Intesis interface and make sure it matches

the current installation’s parameters (see section 4.3).

By default, the interface is set to:

▪ Modbus Slave Address ➔ 1 ▪ Modbus baud rate ➔ 9600 bps

These parameters can be modified from SW4 and SW3 DIP-Switches.

All other switch positions are set at low level (Off position ) by default.

NOTE: All changes on the DIP-Switch configuration require a system power cycle to be applied.

7. Connect the AC system to Mains Power.

IMPORTANT: The Intesis interface requires to be connected to the AC unit (powered) to start communicating.

SW3

SW4

+ 15 hidden pages

Intesis INMBSDAI001I000 User guide

Specifications and Main Features

Frequently Asked Questions

User Manual