IntesisBox TO-RC-MBS-1 English User Manual
Contents
1. 1 Presentation IntesteBox g d The TO RC MBS 1 interface allows a complete and natural integration of Toshiba air conditioners into Modbus RTU EIA485 networks The TO RC MBS 1 is compatible with the Toshiba Digital Inverter amp VRF lines 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 EIA485 networks TO RC MBS 1 is a Modbus slave device e Direct connection to the AC indoor unit e Configuration from 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 control panel and MODBUS RTU Modbus RTU ck EIA485 network TO RC MBS 1 Up to 63 D AC indoor TO RC MBS 1 units Modbus RTU master device SCADA PLC DDC BMS HMI Controller etc b TO RC MBS 1 se Intesis Software S L All rights reserved t URL http www intesis com 4 16 This information is subject to change without notice ra Email info intesis com n es IS tel 34 938047134 IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng 2 Connection The interface comes with two plug in terminal blocks of 2 poles for connection to a Modbus2. being applied User will not be able to change setpoint using any remote controller from Toshiba as setpoint of the indoor unit will become exclusively controlled by the mechanism explained above i e the setpoint obtained in that mechanism will always be enforced in the indoor unit e Current setpoint in AC indoor unit R register 24 in PLC addressing As detailed in previous point actual setpoint in the indoor unit and setpoint requested from TO RC MBS 1 might differ when a value in register 23 external temperature reference is put This register always informs of the actual setpoint being used by the indoor unit this is also the setpoint that will show an additional remote controller from Toshiba in the AB bus Additionally note that temperature values all these three registers are expressed according to the temperature format configured through its onboard DIP Switches See 3 3 DIP switch Configuration Interface 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 229C 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 09C 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 729F 22 C
3. Ambient Temperature 9C 9F 5 6 R 9C x109C F See section 3 2 3 below Window Contact 6 7 R W 0 Closed 1 Open 3 7 8 R W Modbus Command Disablement G 0 Modbus Commands enabled Magnitude for this register can be adjusted to Celsius x 1 C Celsius x 10 C default or Fahrenheit through DIP switches 3 Value of this register is stored in non volatile memory EEPROM Intesis Software S L All rights reserved URL http www intesis com 6 16 This information is subject to change without notice ntes S Email info intesis com amp ite 34 938047134 IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng default 1 Modbus Commands disabled device in monitor only mode Remote Command Disablement 8 9 R W 0 Remote Command enabled 1 Remote Command 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 Indoor unit ambient temperature from external sensor at Modbus side 22 23 R W 32768 Default value No temperature is being provided from an external sensor Any other C x10 C F See section 3 2 3 below Current setpoint in AC indoor unit C x10 C F This read only
4. Intesis Software S L All rights reserved URL http www intesis com 9 16 This information is subject to change without notice ntes l S g Email info intesis com IntesisBox is a registered trademark of Intesis Software SL amp tel 34 938047134 IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng 3 3 DIP switch Configuration Interface All configuration values on TO RC MBS 1 can be written and read from ModBus interface Though some of them can also be setup from its on board DIP switch interface They are DIP switches S1 S3 and S4 on the device in the following location S1 S1 ON 1234 A0 oono S DIP Switch Si is not used by current version of TO RC MBS 1 AC Unit IntesisBox TO RC MBS 1 EIA485 A B ON 12345678 ON 1234 OOU00000 ooon GC S3 S4 S3 S4 The following table applies for configuration of the interface through these DIP switches S3 Modbus protocol Slave address and baudrate Switches Switches Switches Switches 1234567 1234567 1234567 1234567 o un le RIB Ola lN alusA wirn j N pi Ww D p ul Table 3 1 Modbus Slave address Default value Intesis Software S L All rights reserved URL http Awww intesis com 10 16 This information is subject to change without notice ntes l S
5. RTU EIA485 network and to the Toshiba AB bus r 1 1 It is not mandatory to have it in the network Control Panel AC Indoor Unit Internal electronic control board MODBUS RTU EIA485 Bus Max 500 m 2 1 Connect to the AC indoor unit To connect the TO RC MBS 1 interface to the AC indoor unit follow these steps Disconnect mains power from the AC unit Open the front cover of the indoor unit in order to have access to the electronic circuit In the electronic circuit locate the socket connector marked as AB Using a cable connect the interface to AB bus in any point of the bus The AB bus is the bus that connects the AC indoor unit and the wired remote controller is a two wire bus connecting terminals AB of both and has no specific polarity Respect the maximum distance of 500 m for the bus length 2 2 Connection to the E A485 bus Connect the EIA485 bus wires to the plug in terminal block the one of two poles of TO RC MBS 1 respect the polarity on this connection A4 and B Respect the maximum distance of 1200 meters for the bus no loop or star topologies are allowed for EIA485 bus a terminator resistor of 120 Q must be present at each end of the bus to avoid signal reflections and also a fail safe biasing mechanism see section 3 6 for more details In some models the AB connector is not present Find the Control Panel remote controller bus and connect the cable coming from
6. external reference temperature is being used o After a couple of values are entered in the AC unit external reference temperature register 23 and AC unit temperature setpoint register 5 TO RC MBS 1 will calculate the temperature demand they imply e g if a temperature setpoint register 5 of 229C and an external temperature reference register 23 of 209C are entered TO RC MBS 1 will assume that the user is demanding a 2 C increase in temperature o By knowing at all times the ambient temperature actually used by the indoor unit to control its own operation register 6 TO RC MBS 1 can calculate the required setpoint so to apply the demand desired by the user following the example above if TO RC MBS 1 reads an ambient temperature register 6 of 24 C in the indoor unit it will apply a final setpoint of 249C 29C 26 C o From this point on whenever TO RC MBS 1 detects that the ambient temperature reported by the indoor unit changes register 6 it will also change the required setpoint accordingly in order to keep the demand required by the user at any time following the example above if TO RC MBS 1 receives a new value for temperature coming from the indoor unit pf 25 C TO RC MBS 1 will automatically adjust the setpoint required to the AC indoor unit to 25 C 29 C 27 C o In general TO RC MBS 1 is constantly applying the following formula Sac S Tu Tac Where o nes Software S L Al
7. the IntesisBox gateway into these cables as if they were the AB connector Intesis Software S L All rights reserved t URL http www intesis com 5 16 This information is subject to change without notice n es l S G Email info intesis com amp te 34 938047134 IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng 3 Modbus Interface Specification 3 1 Modbus physical layer TO RC MBS 1 implements a MODBUS RTU 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 9600 bps default 19200 bps and 57600 bps 3 2 Modbus Registers All registers are of type 16 bit signed Holding Register in standard ModBus big endian notation 3 2 1 Control and status registers Register Addr Register Addr protocol address PLC address Ro peseripsioh AC unit On Off 0 1 R W 0 Off E 1 On AC unit Mode 0 Auto E 1 Heat 1 2 RIA 2 Dry 3 Fan 4 Cool AC unit Fan Speed 0 Auto 2 3 R W 1 Low 2 Mid 3 High AC unit Vane Position 0 Vane Off Stand by 1 POS1 Horizontal 3 4 R W 2 POS2 Horizontal 3 POS3 Med 4 POS4 Vert 5 POS5 Vert 10 SWING AC unit Temperature Setpoint C F 4 5 R W C x10 C F See section 3 2 3 below AC unit
8. 95 RH non condensing Stock Humidity lt 95 RH non condensing Isolation voltage 1000 VDC Isolation resistance 1000 MQ Modbus Media Compatible with Modbus RTU EIA485 networks LED AC Unit Indicator connection DIP Switches EIA485 Port ipo 2940 5 List of supported AC Unit Types A list of Toshiba indoor unit model references compatible with TO RC MBS 1 and their available features can be found in Toshiba http www intesis com pdf IntesisBox TO RC xxx 1 Compatibility pdf Intesis Software S L All rights reserved URL http Awww intesis com 13 16 This information is subject to change without notice ntes l S Email info intesis com IntesisBox is a registered trademark of Intesis Software SL amp tel 34 938047134 IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng 6 Error Codes Error in Control Error category Error Description Panel System Controller fault error in transmitting comms signal i door or o door unit not working wiring fault System Controller fault error in receiving comms signal i door or o door unit not working wiring fault CN1 not connected correctly Central Controller Issues Remote control detecting error from indoor unit Address not set Auto address failed Check interconnecting wiring etc Re address system Remote detecting error from indoor unit Indoor unit detecting error from remote Indoor seeing err
9. IntesisBox TO RC MBS 1 v 1 5 MODBUS RTU EIA485 Interface for Toshiba air conditioners from the Digital Inverter amp VRF lines User Manual Issue Date 01 2014 Order Codes TO RC MBS 1 IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng Intesis Software S L 2014 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 Spain TRADEMARKS All trademarks and tradenames used in this document are acknowledged to be the copyright of their respective holders o mea Software vie All rights reserved t s URL http www intesis com 2 16 is information is subject to change without notice E Email info intesis com n es I S tel 34 938047134 IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng INDEX 1 PRESCHEATION css i005 rexase cte RE RERO eh ans CRUCE MI CEU EURO OUUN ERROR AOCKORUUR ORO bleed nina eben RRR RR NR OCCUR OR 4 2 Connection pis rm 5 2 1 Connect to the AC indoor unit iieri terne a A ER e RE EREF
10. R RR RE battens 5 2 2 Connection to the EIA485 bus ssssssssesseseesemenmmenemenie mentem eene nnns 5 3 Modbus Interface Specification c citer ede terea Ie peu xe cree ERAN VERAX en aka a 6 3 1 Modbus physical layer EEE nnn nnn 6 3 2 Modbus Registers dex era ke rua RE NES EAEAN ANANKA ENEE MARINA ERE RRRNEERVARARE ERN A 6 3 2 1 Control and Status registers usen ret meurent era x dX FRU x Roca 6 3 2 2 Configuration Registers esses idia ems 7 3 2 3 Considerations on TO RC MBS 1 temperature registers sususss 8 3 3 DIP switch Configuration Interface ssssssssssssssssssseen senses 10 3 4 Implemented Functions essssssssssssssseseseenesee seems esee semen ened 11 3 5 Device LED indicator eradan iaaa aAA means sea sea sea sea sea nnn nn nnn 12 3 6 EIA485 bus Termination resistors and Fail Safe Biasing mechanism 12 4 Specifications c oisrucvr pi yec a oE acer ora Und E E a eer RU K nUDURE EUR Nim EY 13 5 List of supported AC Unit Types sssssssssseseeenenneme nemen menm 13 6 Error CodeS merimo ai meem E 14 Intesis ota All rights reserved URL http www intesis com 3 16 is information is subject to change without notice i i i j Intesis ge Ere meaner con IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng g
11. ailure C2 or EXL1 Outdoor Air temp sensor failure TO 6C Sensor Faults Outdoor Intake sensor failure TS Le Fis Outdoor Heat Exch temp sensor failure EXG2 Between units Comms failure with MDC does E31 remain after power is re instated If so replace PCB amp power PCB 86 Hoe Compressor Fault Low oil level 8D H13 Issues Compressor Fault No current detected Comp2 Compressor Fault Discharge temp not detected Comp Compressor Fault Over current Comp3 96 H22 Compressor Fault Locked rota current detected Comp3 Compressor Fault No current detected Comp3 99 H25 Compressor Fault Discharge temp not detected Comp3 9B H27 Compressor Fault Oil sensor fault Comp2 H28 Compressor Fault Oil sensor connection failure H31 Compressor Fault IPM trip IMP current on temperature L01 i Setting Error Indoor unit group setting error dedii Setting Error Indoor outdoor unit type model miss matched Settings 5 5 Compressor Fault Oil sensor Fault Comp1 Compressor Fault Over current Comp2 Compressor Compressor Fault Locked rota current detected Comp HJ 5 C3 L03 Duplication of main indoor unit address in group control Intesis Software S L All rights reserved t URL http www intesis com 15 16 This information is subject to change without notice ii Email info intesis com NESTS re OT ia IntesisBox is a registered trademark of Intesis S
12. g Email info intesis com E a 34 938047134 IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng Switches A Decimal value 12345678 Description XXXXXX00 2400bps XXXXXX10 4800bps XXXxxx01 9600bps default value XXXXXX11 19200bps Table 3 2 Modbus baud rate S4 Other Degrees Decidegress x10 temperature magnitude 9C 9F and EIA485 termination resistor Decimal Switches dues exl 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 120 connected to EIA485 bus Table 3 3 Temperature and termination configuration 3 4 Implemented Functions TO 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 on more than 1 register with the same request this means that length field should always be 1 when using th
13. is function for writes Only in the interfaces connected at both ends of the bus must be activated the termination resistor More information in section 3 6 Intesis Software S L All rights reserved URL http Awww intesis com 11 16 This information is subject to change without notice ntes I S G Email info intesis com E a 34 938047134 IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng 3 5 Device LED indicator The device includes two LED indicators to signal its different possible operational states In this section their meaning is explained L1 yellow Operation ON OFF Meaning Blinking 500 ms 500 ms Communication error Flashing 100 ms 1900 ms Normal operation configured and working L1 yellow amp L2 red Operation ON OFF Meaning Pulse 5 sec Device start up Alternate blinking 500 ms 500 ms EEPROM failure 3 6 EIA485 bus Termination resistors and Fail Safe Biasing mechanism EIA485 bus requires a 120Q terminator resistor at each end of the bus to avoid signal reflections In order to prevent fail status detections by the receivers listening the bus when all the transmitters outputs are in three state high impedance it is also required a fail safe biasing mechanism This mechanism provides a safe status a correct voltage level in the bus when all the tran
14. l rights reserved URL http www intesis com 8 16 his information is subject to change without notice ntes l S g Email info intesis com IntesisBox is a registered trademark of Intesis Software SL amp tel 34 938047134 IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng Sac setpoint actually applied to the indoor unit S setpoint written at modbus side TO RC MBS 1 register 5 T external temperature reference written at Modbus side PA RC MBS 1 register 23 Tac ambient temperature that the indoor unit is using as reference of its own control loop register 6 Whenever TO RC MBS 1 detects a change in any of the values of 58 T Tac it will send the new corresponding setpoint Sac to the indoor unit o After startup value for external temperature reference register 23 has value 32768 0x8000 This value means that no external temperature is being provided through TO RC MBS 1 In this scenario setpoint shown or written in register 5 will always have same value as the actual setpoint of the indoor unit o Note that using the external temperature reference register 23 i e writing a value different from 32768 0x8000 in it has following relevant consequences Setpoint reported by any additional remote controller or monitoring device from Toshiba in AB in general will be different from the one entered in register 5 of TO RC MBS 1 since the mechanism above is
15. ntaining 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 function 3 or 4 or written modbus functions 5 or 16 A remote controller connected to the AB bus of the Toshiba indoor unit will report the same temperature setpoint value as this register only when no AC unit external reference is provided from TO RC MBS 1 see detail for register 23 below e AC unit ambient temperature temperature R register 6 in PLC addressing This register reports the temperature that is actually used by the Toshiba indoor unit as reference of its own control loop Depending on the configuration of the indoor unit this can be the temperature reported by the sensor in in the return path of the Toshiba indoor unit or the sensor of an additional remote controller in the AB bus It is a read only register modbus functions 3 or 4 e AC unit external temperature reference R W register 23 in PLC addressing This register allows providing an external temperature reference from modbus side AB does not directly allow for devices like TO RC MBS 1 to directly provide a temperature to be used as reference of the control loop of the AC indoor unit In order to overcome that limitation and enable usage of an external temperature sensor i e in Modbus side TO RC MBS 1 applies following mechanism if and only if
16. oftware SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng L04 shown on controllers set as priority shown on controllers not set as priority C4 o L07 C8 L08 C9 Log L10 L11 L13 L15 O O L16 L17 L18 L19 L21 Pot Outdoor unit fault Compressor motor thermal overload over or under voltage Outdoor unit fault Compressor discharge temperature too high Comp1 over 111 C Low on ref gas exp valve pipework damage Outdoor unit fault High pressure trip Outdoor unit fault Open phase on power supply Check power on each phase inverter pcb control pcb Indoor unit fault Ceiling panel incorrectly wired O 0 eo N U eo A Refrigerant loss high discharge temp and EEV wide open and low compressor current draw Outdoor unit fault Open phase on compressor power supply Indoor Unit Outdoor unit fault Compressor discharge temperature too high Problems Comp2 over 111 degC Low on ref gas exp valve pipework damage Outdoor unit fault 4 way valve failure i door temp rises in cooling or fills in heating Check wiring coil pcb output valve operation Ref gas high temp pressure fault heat exch temp high C2 55 60 degC cooling over load sensor fault Outdoor unit fan motor fault fan blade jammed check connections does fan turn freely motor resistance 30 400hm on each pair no fan fault yes pcb fault Outdoor unit fault Compressor overcu
17. or from outdoor Qty of i d units connected are less than qty set Check all i d units are ON reset turn off all units wait 5min power up comms signal comms signal Communication comms signal Problems wireless controller not disabled comms signal comms signal during auto addressing Indoor unit failed to send signal to remote controller Setting Failure Duplication of master indoor units Auto addressing failed Number of indoor units connected are less 4F E15 than number set s Intesis Software m All rights reserved t URL http www intesis com 14 16 his information is subject to cl ange without notice n es S gy Email info intesis com M i 34 938047134 IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng than number set sub indoor units sub indoor units Auto addressing failed No indoor units connected Auto addressing failed Error on outdoor unit address setting Auto addressing failed Sub outdoor unit not receiving comms for main outdoor unit Auto addressing failed Quantity of main and sub outdoor units do not correspond to the number set on main outdoor unit P C B Auto addressing failed Error on sub outdoor unit Outdoor Discharge temp sensor failure TD or DISCH1 Outdoor Discharge temp sensor failure DISCH2 Outdoor Heat Exch temp sensor failure C1 or EXG1 Outdoor Heat Exch temp sensor f
18. register shows the setpoint of the indoor unit when 23 24 R register indoor unit ambient temperature from external sensor 23 in PLC addressing is not used value for register 24 and register 5 will be the same See section 3 2 3 below 3 2 2 Configuration Registers Register Addr Register Addr dM protocol address PLC address RAW Description 12 13 R W Reserved Open Window switch off timeout 13 14 R W 0 30 minutes Factory setting 30 minutes Modbus RTU baud rate bps 2400 14 15 R 4800 9600 19200 15 16 R Device s Modbus slave address 1 63 21 22 R Max number of fan speeds 3 fixed value 49 50 R Device Identification TO RC MBS 1 0x1500 5376d 50 51 R Software version 4 Magnitude for this register can be adjusted to Celsius x 1 C Celsius x 10 C default or Fahrenheit through DIP switches S4 o nes Software S L All rights reserved URL http www intesis com 7 16 his information is subject to change without notice ntes l S a Email info intesis com E ite 34 938047134 IntesisBox is a registered trademark of Intesis Software SL IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng All registers are of type 16 bit unsigned Holding Register in standard ModBus big endian notation 3 2 3 Considerations on TO RC MBS 1 temperature registers TO RC MBS 1 implements four registers co
19. rrent check winding resistance Inverter failure check internal resistance term HIC amp to UVW 200 300Kohm or more Outdoor unit fault Inverter circuit fault Motor current Detection Circuit MDC fault check comp windings sensors C1 amp TS if ok possible pcb failure Indoor unit fault System controller detected fault on sub indoor unit FF P31 Simultaneous operation multi control fault Group controller fault M N A TO RC MBS 1 Error in the communication of TO RC MBS 1device with the AC unit A mn n gt C4 C8 C9 DO Df D2 D3 D5 Ef EA uw EC e E3 Dn In case you detect an error code not listed contact your nearest Toshiba technical support service Intesis Software S L All rights reserved t URL http www intesis com 16 16 This information is subject to change without notice ini Email info intesis com ntesisg tel 34 938047134 IntesisBox is a registered trademark of Intesis Software SL
20. smitters outputs are in three state The TO RC MBS 1 device includes an on board terminator resistor of 120Q that can be connected to the EIA485 bus by using DIP switch P5 see below Fail safe biasing of the EIA485 bus must only be supplied by one of the devices connected to the bus The device providing fail safe biasing or terminator resistor should be the one connected at one end of the bus At the other end of the bus if there is also a TO RC MBS 1 device select the 1209 terminator resistor through DIP switch P5 or if there is a master device not providing internal 120 terminator resistor connect an external 120Q resistor in the bus terminal block connection of such master device Some Modbus RTU EIA485 master devices can provide also internal 120 terminator resistor and or fail safe biasing consult the technical documentation of the master device connected to the EIA485 network in every case Intesis Software S L All rights reserved URL http Awww intesis com 12 16 This information is subject to change without notice ntes l S g Email info intesis com IntesisBox is a registered trademark of Intesis Software SL amp tel 34 938047134 IntesisBox Modbus Toshiba Digital Inverter amp VRF lines User s Manual r1 1 eng 4 Specifications Dimensions 93 x 53 x 58 mm Weight 85g Operating Temperature 0 40 C Stock Temperature 0 40 C Operating Humidity lt
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