IntesisBox LG-RC-MBS-1 English User Manual
Contents
1. 5 2 3 POW Um 6 3 Modbus Interface Specification nenne 7 3 1 Modbus physical 7 3 2 MOG USB 18 7 3 2 1 Control and Status registers cives ve xb na s p Pac o pb e ipa a 7 3 2 2 Configuration Registers 8 3 3 DIP switch Configuration Interface eene enne 9 3 4 Implemented FutictlOliS 11 O49 CC lak DelTOVIODS 11 3 5 1 ON e E UT 11 3 5 2 Considerations LG RC MBS 1 temperature 11 3 53 Device disablement NE E 12 3 5 4 Remote controller disablement 12 2 5 Device LED Indic dEOL ninenin inai pasti cdidit 12 3 7 EIA485 bus Termination resistors and Fail Safe Biasing mechanism 13 4 04100010 PPM 14 5 AC Unit Types ERGO x UV a Y TU 14 6 A e 15 Intesis Software S L All rights reserved URL http www intesis com 3 16 Thi2. Y T 4 8 IN Co 2 lt gt gt e gt gt gt gt C1 s g Y Y T Y 1 141 1 gt gt gt gt gt gt gt gt e e e e lt eleje e e elel e e e e e e lt lele e e e e e e e e lt C1 s 3 Y Y Y Y T T T T Y Y Y Y T T no lt gt lt NO PO NO PO oO lt Q lt X D gt gt X X g N lt lt 1 lt O Y Y Y Y T 1 T T Y Y Y Y T T T T RISE A 4 gt gt gt A N o T 3 Modbus Slave address valle Decimal value Suliches Description b b 12345678 Foxx Table 3 3 53 Modbus baudrate 54 Temperature and terminatio
3. xxxi KEEP SWITCH INTHIS POSITION Gotat vau Table 3 1 51 Switch configuration Intesis Software S L All rights reserved URL http www intesis com 9 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 53 Modbus protocol Slave address and baudrate N N Switches Switches Switches Switches 2345678 2345678 45678 45678 114441 16 0107 83 44444 17 4 1441171 x x T T 2 lt lt lt w ale lt alg gt gt gt amp l gt l gt gt gt e e Y Y T T Y Y T T Y s Oo s N w amp lt 1 1 1 1 1 1 1 1 1 21 31 21 21 21 21 1 A gt gt gt gt gt gt gt gt e e e e lt elel e e e elel e e e e e e lt 5 2 5 5 2 5 25 25 25 5 2 2 2 o s gt gt gt 6 16 1 6 16 1 lt gt gt gt gt gt gt gt gt e e e e lt 1 1 oo
4. 1 AC Compatibility pdf Intesis Software S L All rights reserved URL http www intesis com 14 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 6 Error Codes Error in Error in Modbus Remote Error Description 1 Room air sensor faut eee air sensor fault __ Indoor unit pipe in sensor fault communication fault between wired remote controller indoor unit 4 4 Drainpumpfauit 5 25 Communication fault between indoor unit and outdoorunit 6 6 lndoorunipipeoutsensorfaut 8 98 J O 9 9 J J EEPROMmemoyfaut O 10 10 motor signal fault or motor lock 11 11 HEX middle point sensor fault 00000000 12 12 heaterterminalblocksensorfault 13 O 1014 144 NA J J J 15 15 0 9 O 16 316 18 18 jRetmnairsensorfault O 19 19 No communication response from sub PCB to main PCB 40 20 20 communication response from main PCB to sub PCB 21 21 4Lbf lPMfalt o O 22 22 inputisovercurrent RMS gt Z O 23 23
5. 9 DC linkloworhighvoltage 1 1 1 O 24 24 Highpressueorlowpressureswichon 25 25 9 HigVwinptvotage 0 1 26 26 Compressor start failure gt Z S O 28 28 DC linkhighvoltage 1 1 1 1 1 O 29 29 Over current at compressor input Z 32 32 Discharge temperature is high at inverter compressor 33 33 Discharge temperature is high at constant speed compressor 34 36834 9 jHihpressweistoohgh 35 35 JLowpresureistoollow 332 36 36 Compression ratio is too low O 39 39 Communication fault between PFC and inverter PCB 40 40 9j CT sensorfautt 0 0 0 0 0 O 41 41 Discharge sensor at inverter compressorisfault 42 42 Low pressure sensor is fault 43 43 JjHighpressuesensorisfaut o 44 244 p Airsensoratoutdoorunitisfault S 45 45 HEXsensoratoutdoorunitisfaut 46 46 Compressor suction sensor is fault 48 48 HEXoutltsensoratoutdoorunitisfautt 49 49 lPMtemperatresensorisfaut 50 50 Missingphaseamong3phase o Z 51 951 Over combination rato 82 82 No communication from inverter PCB detected at main PCB 53 53 Communication fault between indoor and outdoor unit 54 54 Rev
6. hear the click AC Indoor Unit I Eie 1 I ee I eee MODBUS RTU 485 Max 500 m Bus Internal electronic control board AC Indoor Unit MODBUS RTU 485 Bus 500 m Internal electronic control board Figure 2 1 LG RC MBS 1 connection diagram Attention The LG units Type A not allows to install a remote controller and LG RC MBS 1 device together Intesis Software S L All rights reserved URL http www intesis com 5 16 This information is subject to change without notice n tes 5 E Email info intesis com t IntesisBox is a registered trademark Intesis Software SL el 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 2 3 Power up After the LG RC MBS 1 is properly connected AC units main power can be connected again Then it will start an initialization process which can take around 2 minutes before the normal operation starts 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 16 This information is subject to change without notice n
7. is detected at main PCB __ 151 0151 j4wayvavefalue 0000000000000 153 153 Upper HEX sensor fault 0 0 0 154 154 Bottom HEX sensor fault o SS 182 182 Communication fault betwen main and sub micom in external PCB 190 190 Inverter PCB heak sink temperature is high 191 191 Inverter PCB heat sink temperature sensorfault 193 193 Fan PCB heak sinktemperatureishign 194 194 Fan PCB heat sink temperature sensorfault 200 200 Autopipingfailure gt 0 0 2001 201 Faultatliquidpipe sensor of HRunit 0 202 202 raultatsubcoolinginletpipesensorof HR unit 203 203 Fault at subcooling outlet pipe sensor of HR unit 200 204 No communication from outdoor unitis detected at HR unit 200 205 HRunitaddresses are duplicated 238 238 No response from outdoor unit at outdoor unit modem Please check your LG manual for more details on the error codes not present in this list or contact your nearest LG support service Intesis Software S L All rights reserved URL http www intesis com 16 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134
8. tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 3 Modbus Interface Specification 3 1 Modbus physical layer LG RC MBS 1 implements a Modbus slave interface to be connected to an EIA485 line It performs 8N2 8N1 compatible communication 8 data bits no parity and 2 stop bit 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 big endian notation The registers are accessible as Holding registers or Inputs registers 3 2 1 Control and status registers Register Addr protocol Register Addr 0 Off 1 On AC unit Mode 0 Auto 1 Heat 2 Dry 3 Fan 4 Cool AC unit Fan Speed 0 Auto 1 Super Low 2 Low 3 Med 4 High 5 Super High AC unit Vane Position 0 No Swing 1 Swing 2 Swirl AC unit Temperature Setpoint 16 30 C 0 undetermined 61 104 F 0 undetermined Indoor Unit Reference Temperature 16 40 C 0 undetermined 61 86 F 0 undetermined 0 8000 There is no temperature sent from the Remote controller Window Contact 0 Closed Device Disablement a 0 LG RC MBS 1 enabled 1 LG RC MBS 1 disabled Remote Controller Disablement 0 Remote Controller enabled 1 Re
9. bus 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 behaviors 3 5 1 Window contact The LG 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 if the window contact register indicates window opened for a certain period of time default value 30 minutes If the AC unit is turned 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 Considerations on LG RC MBS 1 temperature registers LG RC MBS 1 implements two registers containing temperature values e AC unit Temperature Setpoint R W register 5 in PLC addressing This is the adjustable temperature setpoint meant to be required by the user This register can be read Modbus
10. erse phase is detected 1 0 0 59 59 Wrong outdoor unit combination O Intesis Software S L All rights reserved URL http www intesis com 15 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 60 60 Inverter EEPROM memory fault 0000 61 61 Outdoor pipe temperature is too high o o o 62 62 p lPMtemperaueistoohigh 1 0 00 65 lPMtemperatesensorisfaull o o Z o Z o 69 69 CTsensorofconstantspeedcompressor isfaull 86 86 Main PCB EEPROM is faut 0 0 0 000 90 2090 Jlnlettemperature sensor of external POBisfaull 91 91 Outlet temperature sensor of external PCBisfault 104 104 NoCommunicationfromslaveisdetected amp 105 0 105 Communicationfault between fan and inverter PCB 100 106 J 00000 33 113 4 Liquidpipesensorfautt 0 0 0 114 114 Subcoolinginletpipe sensor fault o 115 115 Subcoolingoutletpipesensorfaull o Z o Z 116 116 QOilevelsensorfaul 0 145 145 Nocommunication from external PCB
11. fail safe biasing consult the technical documentation of the master device connected to the EIA485 network in every case Location of jumper and DIP switches for EIA485 bus Termination resistor or Fail Safe Biasing selection Jumper placed Fail safe biasing circuit connected to the EIA485 bus BREE pe To access to internal jumpers JP1 and 1 extract the top cover of the interface inserting a small screw driver or clip in the holes located at both sides of the cover LG RC MBS 1 EIA485 B BERBHBRHB BEBE lt lt Figure 3 3 Accessing the jumper Intesis Software S L All rights reserved URL http www intesis com 13 16 x This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 4 Specifications Weight 65g 0 40 C 40 85 C 9596 RH non condensing 9596 RH non condensing 1000 VDC 1000 MO Compatible with Modbus RTU EIA485 networks AC Unit i LED connection Indicator DIP ES 485 Port DIP Switche 58 mm 93 mm Figure 4 1 G RC MBS 1 external sketch 5 AC Unit Types Compatibility A list of LG indoor unit model references compatible with LG RC MBS 1 and their available features can be found in http www intesis com pdf IntesisBox LG RC xxx
12. function 3 or 4 or written modbus functions 5 or 16 A remote controller connected to the 3 wire bus of the LG indoor unit will report the same temperature setpoint value as this register e AC unit external reference temperature R W register 23 in PLC addressing This register allows providing an external temperature reference from Modbus side If an external temperature is provided through this register indoor unit will use it as reference for its temperature control loop o This register will have no effect in those LG RAC domestic line splits Air Conditioning units this is those models requiring an additional communication accessory enabling communication with LG RC MBS 1 o For this temperature to take effect it is required that the LG AC indoor unit is configured in such a way that it uses the thermostat sensor in the remote controller this is LG RC MBS 1 will act as thermostat sensor providing a temperature sensor reading o This configuration is done via a LG remote controller connected to the indoor unit Function number 42 setting value 1 operation of Thermosensor button and must be done by LG authorized installers at the time of the installation of the AC o Register value after LG RC MBS 1 startup is 32768 which means that no temperature reference is provided to the AC indoor unit In that case AC indoor unit will use its own return path temperature sensor as reference for its control loop I
13. ll prevent the remote controller from changing the state of the AC unit 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 section Operation ON OFF Meaning Meaning 0 0000000 Operation OFF Pulse 3se Undervotage 0 Operation ON OFF Meaning Pie sse Intesis Software S L All rights reserved URL http www intesis com 12 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 3 7 485 bus Termination resistors and Fail Safe Biasing mechanism EIA485 bus requires 1200 terminator resistor at each end of the bus to avoid signal reflections The LG RC MBS 1 device includes an on board terminator resistor of 1200 that can be connected to the EIA485 bus by using DIP switch Table 3 4 A fail safe biasing circuit has also been included in the board of LG RC MBS 1 it can be connected to the EIA485 bus by placing internal JP1 and 1 jumpers see details in Figure 3 2 This fail safe biasing of the EIA485 bus must only be supplied by one of the devices connected to the bus Some Modbus HTU EIA485 master devices can provide also internal 120Q terminator resistor and or
14. mote Controller disabled Configurable according to Table 3 1 Magnitude for this register can be adjusted through DIP switch Check Table 3 4 More information in section 3 5 2 See explanation of this functionality in section 3 5 Intesis Software S L All rights reserved URL http www intesis com 7 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng Register Addr protocol Register Addr address PLC address R W Description AC unit Operation Time 0 65535 hours Counts the time the AC unit is in On state AC unit Alarm Status 0 No alarm condition 1 Alarm condition Error Code 1 Communication error Other look in section 0 External temperature sensor Ranges are manufacturer specific Can be C or F x1 or x10 0x8000 32768d means no input sensor AC real setpoint Ranges are manufacturer specific Can be C or F x1 or x10 Current AC MAX setpoint Ranges are manufacturer specific Can be C or F x1 or x10 Current AC min setpoint Ranges are manufacturer specific Can be C or F x1 or x10 Vane L R position 0 AUTO 1 POS1 9 POS9 10 SWING Input reference temperature Can be or F or x10 Open Window switch off timeout 9 0 30 minutes Factor
15. n Degrees Decidegrees x10 temperature magnitude C F number of fan speeds EIA485 termination resistor ary Decimal value Description value bo b3 Ox 0 Temperature values in Modbus register are represented in degrees x1 default value Temperature values in Modbus register are represented in decidegrees x10 xx 0 Temperature values in Modbus register are represented in Celsius degrees default value Temperature values in Modbus register are represented in Fahrenheit degrees xxox 0 xxix KEEP SWITCH IN THIS POSITION default value DO NOT TURN SWITH INTO THIS POSITION not applicable x0 0 EIA485 bus without termination resistor default value Internal termination resistor of 1200 connected to EIA485 bus Table 3 4 54 Temperature and termination configuration Default value The termination resistor must only be activated in the interfaces connected at both ends of the bus not in the rest The EIA485 bus can be biased through internal jumpers JP2 and JP3 See section 3 7 Intesis Software S L All rights reserved URL http www intesis com 10 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 3 4 Implemented Functions LG RC MBS 1 implements the following standard Mod
16. ntesis Software S L All rights reserved URL http www intesis com 11 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng Additionally note that temperature values from all these three registers are expressed according to the temperature format configured through its onboard DIP Switches See 0 Following formats are possible e 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 22 C e 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 0 C e Fahrenheit value Value in Modbus register is the temperature value in Fahrenheit i e a value 72 in the Modbus register must be interpreted as 72 F 22 C 3 5 3 Device disablement If the device disablement register is set to 1 it will not allow the LG RC MBS 1 to change the state of the AC unit All 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 LG RC MBS 1 setting the previous value In this way the LG RC MBS 1 wi
17. s information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 1 Presentation m 4 The LG RC MBS 1 interface allows a complete and natural IntesisBox 2 integration of LG air conditioning units into Modbus RTU EIA485 networks AB Main features 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 LG RC MBS 1 device e External power not required e Direct connection to Modbus EIA485 networks Up to 63 LG RC MBS 1 devices can be connected in the same network See Figure 1 1 LG RC MBS 1 is a Modbus slave device e Direct connection to the AC indoor units e Configuration from both on board DIP switches and Modbus 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 EIA485 network Modbus RTU x master em por device LG RC MBS 1 f LG RC MBS 1 LG RC MBS 1 SCADA PLC DDC BMS HMI Controller etc LG RC MBS 1 Figure 1 1 G RC MBS 1 Connection capabilities Intesis Software S L All rights reserved URL http www intesis com 4 16 m This information is
18. sIntesisBox G RC MBS 1 v 1 3 Modbus RTU EIA485 Interface for LG conditioning units User s Manual Issue Date 08 2015 r1 1 Order Code LG RC MBS 1 IntesisBox LG RC MBS 1 User s Manual r1 1 eng Intesis Software S L 2015 All 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 Mila i Fontanals 1 bis 08700 Igualada opain TRADEMARKS All trademarks and trade names 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 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng INDEX i RP 4 2 CONNECCION T TT 5 2 1 Connection of the interface to the AC indoor 5 2 2 Connection of the interface to Modbus
19. subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 2 Connection 2 1 Connection of the interface to the AC indoor unit The LG RC MBS 1 connects directly to the LG 3 wire cable 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 e Noremote control available Connect the gateway directly to the 3 wire bus of the indoor unit Master when there is no LG remote control Disconnect power supply from the AC unit and use a 3 wire cable for the connection of LG RC MBS 1 LG wired remote controller and its corresponding indoor unit Screw the suitably peeled cable ends in the corresponding terminals of each device as summarized in Figure 2 1 Maximum connection bus length is 500 meters and has polarity 2 2 Connection of the interface to Modbus Use the EIA485 connector in the LG RC MBS 1 to connect to the Modbus network 1 For wall mount extract the 1 and down staples Remote Control a A Fut rp D until you
20. y setting 30 RTU baudrate bps 2400 4800 9600 19200 1 63 Max number of fan speeds 1 5 must be configured according to the number of fan speeds supported by the AC unit Moi Identification LG RC MBS 1 OxOF00 Software version This value is stored in non volatile memory 5 Once window contact is open a count down to switch off the AC Unit will start from this configured value 7 Configurable through S3 See Table 3 3 Intesis Software S L All rights reserved URL http www intesis com 8 16 This information is subject to change without notice n tes 5 E Email info intesis com IntesisBox is a registered trademark of Intesis Software SL tel 434 938047134 IntesisBox LG RC MBS 1 User s Manual r1 1 eng 3 3 DIP switch Configuration Interface In this section values of the configuration switches and their meaning are specified IntesisBox LG RC MBS 1 EIA485 B HHBBBBRH S3 S4 Figure 3 1 G RC MBS 1 51 AC unit configuration Master Slave Slave of Operating Mode and Machine Type Decimal nm D ription value escriptio Slave default value A LG Controller must be present in the bus configured as Oxxx Master 1 xxXx Master in the bus LG Controller not needed in the bus If existing it must be configured as Slave xixx Error Type B 0000 xix mo 0
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