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Compatible with commercial air conditioners by Samsung

USER MANUAL

Issue date: 04/2019 r1.3 ENGLISH

Summary of content (23 pages)

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Compatible with commercial air conditioners by Samsung USER MANUAL Issue date: 04/2019 r1.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN Modbus RTU (EIA-485) Interface for Samsung air conditioners Compatible with commercial air conditioners by Samsung ORDER CODE INMBSSAM001R000 LEGACY ORDER CODE SM-RC-MBS-1 © HMS Industrial Networks S.L.U - All rights reserved This information is subject to change without notice URL https://www.intesis.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 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.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN INDEX 1. Presentation .......................................................................................................... 5 2. Connection ............................................................................................................ 6 2.1 Connect to the AC indoor unit ............................................................................... 6 2.2 Connection to the EIA-485 bus ................................................
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 1. Presentation The INMBSSAM001R000 interfaces allow a complete and natural integration of Samsung air conditioners into Modbus RTU (EIA-485) networks. 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 of AC. • External power not required. • Direct connection to Modbus RTU (EIA-485) networks.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 2. Connection The interface comes with 2 plug-in terminal blocks of 2 poles each one, to establish direct connection with 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 The INMBSSAM001R000 connects directly to the Samsung F3F4 V1V2 bus. This bus is not provided within the interface.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 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 INMBSSAM001R000 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). Loop or star typologies are not allowed in the case of the EIA-485 bus. A terminator resistor of 120Ω must be present at each end of the bus to avoid signal reflections.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 4. Modbus Interface Specification 4.1 Modbus physical layer INMBSSAM001R000 implements a Modbus RTU (Slave) interface, to be connected to an EIA485 line. It performs 8N2 communication (8 data bits, no parity and 2 stop bit) with several available baud rates (2400 bps, 4800 bps, 9600 bps -default-, 19200 bps, 38400 bps, 57600 bps, 76800 bps and 115200 bps). It also supports 8N1 communication (8 data bits, no parity and 1 stop bit). 4.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN Register Address (protocol address) Register Address (PLC address) R/W 7 8 R/W 8 9 R/W 9 10 R/W 10 11 R Description INMBSSAM001R000 Disablement ▪ ▪ 0: INMBSSAM001R000 enabled (Default) 1: INMBSSAM001R000 disabled AC Remote Control Disablement ▪ ▪ 12 R 4 0..65535 (hours). Counts the time the AC unit is in “On” state.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 4.2.2 Configuration Registers Register Address (protocol address) Register Address (PLC address) 13 14 R/W R/W Description “Open Window” switch-off timeout ▪ ▪ 9 0..30 (minutes) Factory setting: 30 (minutes) Modbus RTU baud-rate 9 14 15 R 15 16 R 21 49 50 67 81 22 50 51 68 82 R R R R R 99 100 W ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ 2400bps 4800bps 9600bps (Default) 19200bps 38400bps 57600bps 76800bps 115200bps Modbus Slave Address ▪ 1..
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 4.2.3 Considerations on Temperature Registers • AC unit temperature setpoint (R/W) (register 4 – in Protocol address / register 5 – in PLC address): This is the adjustable temperature setpoint value that must be required by the user. This register can be read (Modbus function 3 or 4) or written (Modbus functions 6 or 16).
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN Where: SAC - setpoint value currently applied to the indoor unit Su - setpoint value written at Modbus side (register 4/5) Tu - external temperature reference written at Modbus side (register 22/23) TAC - ambient temperature that the indoor unit is using as the reference of its own control loop (register 5/6) When INMBSSAM001R000 detects a change in any of the values of { Su , Tu , TAC }, it will send the new setpoint (SAC) to the indoor unit.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN Moreover, notice that temperature’s values of all these four registers are expressed according to the temperature´s format configured through its onboard DIP-Switches (See “4.3 - © HMS Industrial Networks S.L.U - All rights reserved This information is subject to change without notice URL https://www.intesis.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN DIP-switch Configuration Interface”). These following formats are possible: • Celsius value: Value in Modbus register is the temperature value in Celsius (i.e. a value “22” in the Modbus register must be interpreted as 22ºC). • Decicelsius value: Value in Modbus register is the temperature value in decicelsius (i.e. a value “220” in the Modbus register must be interpreted as 22.0ºC).
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 4.3 DIP-switch Configuration Interface All the configuration values on INMBSSAM001R000 can be written and read from Modbus interface. Otherwise, some of them can also be setup from its on-board DIP-switch interface.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN SW3/SW4 – Baud rate configuration SW3-P7..8 ON SW4-P3 ON ON ON ON ON ON Description 2400bps 4800bps 9600bps (Default value) ON 19200bps ON ON ON ON ON ON ON 38400bps 57600bps 76800bps ON 115200bps Table 4.2 SW3-SW4: Modbus baud rate SW4 – Degrees/Decidegrees (x10), temperature magnitude (ºC/ºF) and EIA-485 termination resistor. SW4-P1..
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN SW3 – Modbus Slave address Add SW3-P1..6 Add ON 0 ON ON 29 17 ON 5 ON 7 8 ON 10 ON ON ON ON ON 62 ON ON 50 63 ON ON 38 ON 61 49 37 25 ON 60 ON ON 24 ON ON 48 36 ON ON ON 59 47 35 23 11 ON ON 22 ON 58 46 34 ON ON 9 ON ON 21 57 45 33 ON ON ON ON 20 ON 56 44 32 ON ON ON ON 19 ON 55 43 31 ON ON ON ON ON ON 54 42 30 18 6 ON ON ON ON 4 ON 53 41 ON 16 ON ON ON SW3-P1..
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 4.4 Implemented Functions INMBSSAM001R000 implements the following standard Modbus functions: ▪ 3: Read Holding Registers ▪ 4: Read Input Registers ▪ 6: Write Single Register ▪ 16: Write Multiple Registers (Despite this function is allowed, the interface does not allow to write operations on more than 1 register with the same request, this means that length field should be always be 1 when this function is being used in case of writing).
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IntesisTM INMBSSAM001R000 4.6 EIA-485 bus. mechanism Termination User’s Manual r1.3 EN resistors and Fail-Safe Biasing EIA-485 bus requires a 120Ω terminator resistor at each end of the bus to avoid signal reflections. In order to prevent fail status detected by the receivers, which are “listening” the bus, when all the transmitters’ outputs are in three-state (high impedance), it is also required a fail-safe biasing mechanism.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 5. Electrical and Mechanical features Enclosure Plastic, type PC (UL 94 V-0) Net dimensions (dxwxh): 93 x 53 x 58 mm / 3.7” x 2.1” x 2.3” Color: Light Grey. RAL 7035 Operation Temperature 0ºC to +60ºC Weight 85 g. Stock Temperature -20ºC to +85ºC Mounting Wall DIN rail EN60715 TH35.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 6. List of supported AC Unit Types. A list of Samsung indoor unit model’s references compatible with INMBSSAM001R000 and its available features can be found on this link: https://www.intesis.com/docs/compatibilities/inxxxsam001r000_compatibility © HMS Industrial Networks S.L.U - All rights reserved This information is subject to change without notice URL https://www.intesis.
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IntesisTM INMBSSAM001R000 User’s Manual r1.3 EN 7.
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IntesisTM INMBSSAM001R000 602 602 Communication error 604 604 Communication error 606 606 Installation error 607 607 Configuration error 609 609 Configuration error 618 618 Configuration error 619 619 Configuration error 620 620 Configuration error 621 621 Configuration error 627 627 Configuration error EA EA Configuration error 65535 (-1) N/A INMBSSAM001R000 User’s Manual r1.3 EN indoor unit.