IntesisBox ME-AC-MBS-1 English User Manual
Contents
1. IntesisBox is a registered trademark of Intesis Software SL tel 34 9380471342. big endian notation The registers are accessible as Holding registers or Inputs registers 3 2 1 Control and status registers Register Addr Register Addr protocol address PLC address Ro Wa AC unit On Off 0 1 R W 0 Off 1 AC unit Mode 0 Auto 1 2 R W 1 Heat 2 3 4 Cool AC unit Fan Speed Num of Fan Speeds Val 4 default 3 2 1 2 3 R W 0 Undetermined 1 Low Low Low High 2 Mid Mid High 3 High High 4 Powerful AC unit Vane Position 3 4 R W Q0 Undetermined 1 4 Pos 1 Pos 4 10 Swing AC unit Temperature Setpoint 4 5 R W 16 30 9C 0 undetermined 61 86 F 0 undetermined 5 6 R AC unit Ambient Temperature Window Contact 6 7 R W 0 Closed 1 Device Disablement 7 8 R W 0 MH RC MBS 1 enabled 1 MH RC MBS 1 disabled Configurable according to Table 3 1 Magnitude for this register can be adjusted through DIP switch Check Table 3 4 Intesis Software S L All rights reserved URL http www intesis com 7 15 a This information is subject to change without notice n tes S amp Email info intesis com software IntesisBox is a registered trademark of Intesis Software SL tel 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng Register Addr Register Addr protocol ad
3. change without notice n tes S amp Email software IntesisBox is a registered trademark of Intesis Software SL tel 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 5 AC Unit Types Compatibility A list of Mitsubishi Heavy Industries indoor unit model references compatible with MH RC MBS 1 and their available features can be found in http www intesis com pdf IntesisBox MH RC xxx 1 AC Compatibility pdf 6 Error Codes Error in ied Remote Error Description Controller Remote controller communication error Duplicated indoor unit address Outdoor unit signal line error Communication error during operation Indoor heat exchanger temperature thermistor anomaly Indoor return air temperature thermistor anomaly Heating overload operation Drain trouble Excessive number of indoor units more than 17 by controlling one remote controller Address setting error by mixed setting method Communication error between master and slave indoor units Indoor fan motor anomaly Indoor unit operation check drain motor check setting error Remote controller temperature thermistor anomaly Unmatched connection of indoor and outdoor unit Duplicated outdoor unit address No Open L3 Phase on power supply at primary side Inverter primary current error Cooling overload operation Discharge pipe temperature error Outdoor heat exchanger temperature thermistor anomaly Outdoor Ambient air te
4. 85 bus Termination resistors and Fail Safe Biasing mechanism 13 4 Specifica tioN Sie n 14 5 AC Unit Types Compatibility oed prb teh ehe tek eke esd ek reci tees 15 6 ERO COGS P 15 Intesis Software S L All rights reserved URL http www intesis com 3 15 s This information is subject to change without notice n tes S amp Email software IntesisBox is a registered trademark of Intesis Software SL tel 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 1 Presentation AC Unit IntesisBox nem P The MH RC MBS 1 interface allows a complete and natural integration of MITSUBISHI HEAVY INDUSTRIES air conditioners into Modbus RTU RS 485 networks Compatible with optional part SC BIKN E more information in section 5 e Reduced dimensions 93 x 53 x 58 mm e Quick and easy installation Mountable on DIN rail wall or even inside the indoor unit in some models of AC e External power not required e Direct connection to MODBUS RTU RS 485 networks Up to 63 MH RC MBS 1 devices can be connected in the same network MH RC MBS 1 is a Modbus slave device e Direct connection to the AC indoor units Up to 16 AC indoor units can be connected to MH RC MBS 1 controlling them as one not individually e Configuration from
5. 9 15 a This information is subject to change without notice n tes S amp Email info intesis com tel IntesisBox is a registered trademark of Intesis Software SL e 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng S3 Modbus protocol Slave address and baudrate Switches Switches Switches Switches 1234567 1234567 1234567 1234567 0 2 3 4 5 6 7 8 9 10 X X X X X X X X X X X X X X X X Table 3 2 53 Modbus Slave address Switches Decimal value 12345678 Description 00 2400bps xxxxxx10 T 4800bps 01 Y 9600bps default value XXxxxx1 1 T 19200bps Table 3 3 53 Modbus baudrate S4 Temperature and termination Degrees Decidegrees x10 temperature magnitude C 9F and EIA485 termination resistor Decimal Switches value 1234 Description Temperature values in Modbus register are represented in degrees x1 default value Temperature values in Modbus register are represented in decidegrees x10 Temperature values in Modbus register are represented in Celsius degrees default value Temperature values in Modbus register are represented in Fahrenheit degrees EIA485 bus without termination resistor default value Internal termination resistor of 120Q connected to EIA485 bus Tab
6. both on board DIP switches and MODBUS RTU e Total Control and Supervision e Real states of the AC unit s internal variables e Allows using simultaneously the IR and wired remote controls and MODBUS RTU Modbus RTU h RS485 network Modbus RTU a master HK Up to 63 MH RC MBS 1 SCADA PLC DDC BMS HMI Controller etc MH RC MBS 1 Intesis Software S L All rights reserved URL http www intesis com 4 15 This information is subject to change without notice n te S S amp Email info intesis com software tel IntesisBox is a registered trademark of Intesis Software SL 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 2 Connection 2 1 Connection of the interface to the AC indoor unit The MH RC MBS 1 connects directly to the MITSUBISHI HEAVY INDUSTRIES two wire X Y bus Depending on which controllers are available the recommended connection methods are the following details in Figure 2 1 e Wired remote control available Connect the gateway as Slave in parallel with the wired remote controllers Wall controller acts as master e Infrared remote control available Connect the gateway as Master in parallel with the infrared remote controller Infrared receiver as Slave e No remote control available Connect the gateway directly to the X Y bus of the indoor unit as Master when there is no MITSUBISHI HEAVY INDUSTRIES remote controller Disconnect mains p
7. cted again Then it will start an initialization process which can take around 2 minutes before the normal operation starts During this process the master of the X Y bus will show an indication of the initialization In case that the MH RC MBS 1 is configured as master the modbus register error code will be set to 65532 see section 6 This error will be reset once the initialization is finished While the initialization is ongoing some modbus registers will indicate an undetermined value see section 3 2 Once the normal operation starts they will acquire its corresponding value It is important to bear in mind that changes made during the initialization process will not have effect until it finishes Intesis Software S L All rights reserved URL http www intesis com 6 15 This information is subject to change without notice n te S S amp Email info intesis com software IntesisBox is a registered trademark of Intesis Software SL tel 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 3 Modbus Interface Specification 3 1 Modbus physical layer MH RC MBS 1 implements a MODBUS RTU slave interface to be connected to an RS 485 line It performs an 8N2 communication 8 data bits no parity and 2 stop bits with several available baudrates 2400 bps 4800 bps 9600 bps default and 19200 bps 3 2 Modbus Registers All registers are of type 16 bit unsigned register in standard ModBus
8. dress PLC address R W Description Remote Controller Disablement 8 9 R W 0 Remote Controller enabled 1 Remote Controller disabled AC unit Operation Time 9 10 R W 0 65535 hours Counts the time the AC unit is in On state AC unit Alarm Status 10 11 R 0 No alarm condition 1 Alarm condition 11 12 R Error Code Information in section 6 External sensor temperature 22 23 R W be or OF 1 or x10 0x8000 32768d means no input sensor 43 44 W Filter reset 1 Filter reset Filter status 44 45 R 0 OK 1 Filter cleaning Error reset 45 46 W 1 Error reset Center Remote 46 47 R 0 Remote unlock Center Remote 1 Remote lock Center 2 Remote Remote 3 2 2 Configuration Registers Register Addr Register Addr RD R W Description protocol address PLC address P Open Window switch off timeout 13 14 R W 0 30 minutes Factory setting 30 minutes Modbus RTU baudrate bps 2400 14 15 R 4800 9600 19200 T7 6 15 16 R Device s Modbus slave address 1 63 Max number of fan speeds 21 22 R 1 4 must be configured according to the number of fan speeds supported by the AC unit 49 50 R Device Identification MH RC MBS 1 0 0 00 50 51 R Software version 3 See explanation of this functionality in section 3 5 This value is stored in non vo
9. e biasing consult the technical documentation of the master device connected to the RS485 network in every case Location of jumper and DIP switches for RS485 bus Termination resistor or Fail Safe Biasing selection Jumper placed Fail safe biasing circuit connected to the RS485 bus BHBEBBHHH 22 To access to internal jumper JP1 extract the top cover of the interface inserting a small screw driver or clip in the holes located at both sides of the cover MH RC MBS 1 485 Figure 3 3 Accessing the jumper Intesis Software S L All rights reserved URL http www intesis com 13 15 This information is subject to change without notice n te S S amp Email info intesis com tel IntesisBox is a registered trademark of Intesis Software SL nee 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 4 Specifications Dimensions 93 x 53 x 58 mm Weight 85g Consumption Current 80 mA Operating Temperature 40 859C Stock Temperature 40 859C Operating Humidity 9596 RH non condensing Stock Humidity 9596 RH non condensing Isolation voltage 1000 VDC Isolation resistance 1000 Modbus Media Compatible with Modbus RTU RS485 networks LED Indicator DIP Switches ip pe Hn Intesis Software S L All rights reserved URL http www intesis com 14 15 s This information is subject to
10. ection L1 green Operation ON OFF Meaning Blinking 500 ms 500 ms Flashing 100 ms 1900 ms Normal operation configured and working L2 red Operation ON OFF Meaning Pulse 3 sec Undervoltage L1 green amp L2 red Operation ON OFF Meaning Pulse 5 sec Device start up Alternate blinking 500 ms 500 ms Flash checksum not OK Intesis Software S L All rights reserved URL http www intesis com 12 15 This information is subject to change without notice n tes S amp Email info intesis com software IntesisBox is a registered trademark of Intesis Software SL tel 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 3 7 5485 bus Termination resistors and Fail Safe Biasing mechanism RS485 bus requires 1200 terminator resistor at each end of the bus to avoid signal reflections The MH RC MBS 1 device includes an on board terminator resistor of 1200 that can be connected to the RS485 bus by using DIP switch Table 3 4 A fail safe biasing circuit has also been included in the board of MH RC MBS 1 it can be connected to the RS485 bus by placing the internal double jumper JP1 see details in Figure 3 2 This fail safe biasing of the RS485 bus must only be supplied by one of the devices connected to the bus Some Modbus RTU RS485 master devices can provide also internal 1200 terminator resistor and or fail saf
11. latile memory 5 Once window contact is open a count down to switch off the AC Unit will start from this configured value 6 Configurable through S3 See Table 3 3 and Table 3 2 Intesis Software S L All rights reserved URL http www intesis com 8 15 1 This information is subject to change without notice n tes S amp Email info intesis com tel IntesisBox is a registered trademark of Intesis Software SL e 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 3 3 DIP switch Configuration Interface In this section the values of the configuration switches and their meaning are specified L1 L2 S1 AC Unit IntesisBox MH RC MBS 1 485 ERE Figure 3 1 MH RC MBS 1 S1 AC unit configuration Master Slave Fan Speeds and Vanes Decimal Switches ES value 1234 Description Slave default value A MITSUBISHI HEAVY INDUSTRIES Controller must be present in X Y configured as Master Master in X Y bus MITSUBISHI HEAVY INDUSTRIES Controller not needed in X Y If existing it must be configured as Slave Indoor unit has 1 Fan Speeds Indoor unit has 2 Fan Speeds Indoor unit has 3 Fan Speeds Indoor unit has 4 Fan Speeds default value Table 3 1 S1 Switch configuration Fan speed DIP switch must be configured according to the number of fan speeds supported by the AC unit Intesis Software S L All rights reserved URL http www intesis com
12. le 3 4 S4 Temperature and termination configuration Default value Only in the interfaces connected at both ends of the bus must be activated the termination resistor not in the rest The EIA485 bus can be biased through internal jumpers JP1 See section 3 7 Intesis Software S L All rights reserved URL http www intesis com 10 15 This information is subject to change without notice n tes S amp Email info intesis com tel IntesisBox is a registered trademark of Intesis Software SL e 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 3 4 Implemented Functions MH RC MBS 1 implements the following standard MODBUS functions 3 Read Holding Registers 4 Read Input Registers 6 Write Single Register 16 Write Multiple Registers Although this function is allowed the interface does not allow write operations of more than 1 register with the same request this means that length field should always be 1 when using this function for writes The maximum number of registers that can be read in a single request is 100 3 5 Special behaviours 3 5 1 Window contact The MH RC MBS 1 has the functionality of automatically control the turning off of the AC indoor unit depending on the state of the window contact register The AC indoor unit will be turned OFF and if the window contact register indicates window opened for a certain period of time default value 30 minutes If the AC unit is tu
13. mperature thermistor anomaly Discharge pipe temperature thermistor anomaly High pressure error Power transistor overheat Current cut Excessive number of indoor units connected excessive total capacity of connection Communication error between inverter PCB and outdoor control PCB Mixed address setting methods coexistent in same network Inverter over current error Outdoor DC fan motor anomaly Low pressure anomaly Inverter anomaly Suction pipe temperature thermistor anomaly High Low pressure sensor anomaly Underneath temperature thermistor anomaly Power transistor temperature thermistor anomaly Insufficient in refrigerant amount or detection of service valve closure Anomalous compressor by loss of synchronism Compressor startup failure Rotor position detection failure Anomalous compressor rotor lock Communication error between the master unit and slave units Emergency stop Initialization process See section 2 3 Communication error between MH RC MBS 1 and AC unit Remote controller In case you detect an error code not listed contact your nearest MITSUBISHI HEAVY INDUSTRIES technical support service Intesis Software S L All rights reserved URL http www intesis com 15 15 This information is subject to change without notice n tes S amp Email info intesis com software
14. oGintesis com software IntesisBox is a registered trademark of Intesis Software SL tel 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 3 5 3 Device disablement If the device disablement register is set to 1 it will not allow the MH RC MBS 1 to change the state of the AC unit the modbus registers will show the current state of the AC unit as if they were Read Only registers 3 5 4 Remote controller disablement When the remote controller is disabled changes made by the remote controller will be corrected by the MH RC MBS 1 setting the previous value In this way the MH RC MBS 1 will prevent the remote controller from changing the state of the AC unit 3 5 5 Center Remote The Center Remote register can be set to three different values 0 Remote unlock Center Remote The indoor unit is being controlled by a BMS and it can be managed from the BMS the remote controller or the MH RC MBS 1 1 Remote lock Center The indoor unit is being controlled by a BMS and it can only be managed by the BMS In this situation the MH RC MBS 1 is disabled like when the device disablement register is set to 1 2 Remote Remote The indoor unit is not being controlled by any BMS It can be managed from the remote controller or the MH RC MBS 1 3 6 Device LED indicator The device includes two LED indicators check Figure 3 1 to signal its different possible operational states Their meaning is explained in this s
15. ower from the AC unit and use 2 wire cable with a diameter of 2mm for the connection of MH RC MBS 1 MITSUBISHI HEAVY INDUSTRIES remote controller and its corresponding indoor unit Screw the suitably peeled cable ends in the corresponding X Y terminals of each device as summarized in Figure 2 1 Maximum X Y bus length is 600 meters cable has no polarity 2 2 Connection of the interface to Modbus Use the EIA485 connector the MH RC MBS 1 to connect to the Modbus network 1 For wall mount extract the upper i and down staples 1 until you hear the Click Remote Control AC Indoor Unit Internal i m electronic 1 control I Y LLL x o 4 gt 600 MODBUS RTU EIA485 Bus Connection to X Y bus Two wires cable AC Indoor Unit Internal electronic control yA x mm 4 MODBUS RTU EIA485 Max 600m Bus i 93 mm 1 1 Figure 2 1 MH RC MBS 1 Connection diagrams Intesis Software S L All rights reserved URL http www intesis com 5 15 1 This information is subject to change without notice n tes S amp Email info intesis com tel IntesisBox is a registered trademark of Intesis Software SL e 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng 2 3 Power up After the MH RC MBS 1 is properly connected AC unit s main power can be conne
16. rned on through either the remote controller or the On Off register and the window contact is still indicating window opened it will restart the countdown of the 30 minutes and after that it will turn OFF the AC unit again If the window contact register is indicating window closed this functionality will have no effect to the normal operation 3 5 2 External temperature sensor Virtual temperature As master of the X Y bus the MH RC MBS 1 will always send the temperature of the external temperature sensor directly to the AC unit This temperature will become the AC unit s temperature As slave of the X Y bus if there is an external temperature sensor it will send a different set point temperature to the AC unit from the one entered by the user Its calculation is described below Four temperatures are involved e Set point temperature set point temperature sent to the AC unit S e Return path temperature ambient temperature sent by the AC unit e Virtual set point temperature set point temperature requested by the user 5 setpoint register e Virtual ambient temperature ambient temperature measured by the external 7 temperature sensor The set point temperature sent to the AC indoor unit is calculated with the following formula S S T T Intesis Software S L All rights reserved URL http www intesis com 11 15 1 This information is subject to change without notice n tes IS amp Email inf
17. s 16 nnn 5 2 3 POW i o EL 6 3 Modbus Interface 5 1 4 nnn 7 3 1 Modbus 1 2 4 1 4 4 1 EERE EEE EEE EEE EEE 7 3 2 Modbu ls Reglstets iicet eer ee vnb nir Eutr ger E ERAT Y REN RU E aS 7 3 2 1 Control amd status registers co ener Veen a AG P E ERR UE XR RT E ER ON RC 7 3 2 2 Configuration 1101 enses esee nnns 8 3 3 DIP switch Configuration Interface 9 3 4 Implemented 4 4 4 1 1 EEE EE EEE sea sea sea sea sea EE nn nn EEE 11 3 5 Special behaviours 6 6 6 EENE EKAA 11 3 5 1 WINdOW 11 3 5 2 External temperature sensor Virtual temperature 11 3 5 3 Device 2 sea seas sen nn nnn 12 3 5 4 Remote controller nnnm nnns 12 3 6 Device LED Indicator visco exe et EUR ende Rene ieee 12 3 7 RS4
18. sIntesisBox MH RC MBS 1 v 0 6 MODBUS RTU RS 485 Interface for MITSUBISHI HEAVY INDUSTRIES air conditioners User s Manual Issue Date 2012 01 Order Code MH RC MBS 1 IntesisBox MH RC MBS 1 User s Manual r3 eng Intesis Software S L Rights Reserved Information in this document is subject to change without notice No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or any means electronic or mechanical including photocopying and recording for any purpose other than the purchaser s personal use without the written permission of Intesis Software S L Intesis Software S L Mil i Fontanals 1 bis 1 08700 Igualada Spain TRADEMARKS trademarks and tradenames used in this document are acknowledged to be the copyright of their respective holders Intesis Software S L All rights reserved URL http www intesis com 2 15 This information is subject to change without notice n te S S amp Email info intesis com software IntesisBox is a registered trademark of Intesis Software SL tel 34 938047134 IntesisBox MH RC MBS 1 User s Manual r3 eng INDEX 1 Presentatlon ETE RR E RE nous EUER AER KK A 4 2 CONNECTION cn 5 2 1 Connection of the interface to the AC indoor unit lessen nnn 5 2 2 Connection of the interface to Modbu
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