Panasonic/Sanyo A/C Interface – Modbus RTU Installation Instructions
Contents
1. Switch switch value when ON 1 10 2 20 3 40 4 80 To get the Slave ID add together the value for each switch set to ON For example to set address 130 set switches 1 3 and 4 ON 1 4 8 x 10 slave ID 130 Please note Each Modbus interface connected to the same BMS RS 485 network must be set to a unique address and there must be at least 30 slave IDs between a converter and another device For example if the first is set to slave ID 10 the next converter or other MODBUS device should be set to 40 or greater A C Gateway baud rate The baud rate of communications used between the Modbus interface and A C Gateway can be set to 19200 or 9600 baud using the 5 DIP switch Switch 5 A C Gateway Baud Rate OFF 19200 ON 9600 10 RS 485 Modbus baud rate The baud rate of communications used between the Modbus interface and Modbus Master can be set between 1200 and 115200 baud using the 6 7 and 8 DIP switch 9600 baud is set as default Switch 6 Switch 7 Switch 8 Modbus Baud Rate OFF OFF OFF 1200 ON OFF OFF 2400 OFF ON OFF 4800 ON ON OFF 9600 OFF OFF ON 19200 ON OFF ON 38400 OFF ON ON 57600 ON ON ON 115200 Fixed communications settings The following Modbus interface to A C Gateway communication settings are fixed and cannot be changed Adaptor address 0 Link 1 8 Data bits Even Parity 1 Stop Bit The followi2. Poor communication of group processing control caused by miswiring Unused Poor transmission of CCU to outdoor sub bus Poor reception of CCU from outdoor sub bus Poor setting of outdoor sub bus address duplicated Discord of number of outdoor sub bus units Miswiring of outdoor sub bus Misconnection of outdoor units Poor reception of outdoor serial Poor transmission of outdoor serial Unused Abnormal sensor for the inlet temp on the heat exchanger of the indoor unit Abnormal sensor for mid point temp on the heat exchanger of the indoor unit Abnormal sensor for the outlet temp on the heat exchanger of the indoor unit Abnormal sensor for the outlet temperature of the PC compressor Abnormal sensor for the outlet temperature of the AC compressor Abnormal sensor for the inlet temp on the heat exchanger of the outdoor unit Abnormal sensor for the outlet temp on the heat exchanger of the outdoor unit Abnormal sensor for outdoor temperature Actuation of scroll compressor protective thermostat Abnormal sensor for suction temperature of indoor unit Abnormal sensor for discharge temperature of indoor unit Abnormal sensor for cooling water temperature Abnormal sensor for engine room temperature Abnormal sensor for suction and discharge gas Abnormal sensor for exhaust gas temperature Abnormal sensor for compressor bottom temperature Abnormal sensor for compressor 3 current Abnormal sensor for discharge gas te
3. MaC technologies Panasonic Sanyo A C Interface Modbus RTU Installation Instructions Preface Safety warnings To avoid injury or damage to the Modbus interface read all installation and configuration instructions in this guide before installing A CAUTION Do not expose to rain or moisture Ax CAUTION The installation and assembly of electrical equipment may only be performed by a skilled electrician improper installation by the user may result in electric shock or fire Maintenance This product contains no user serviceable parts WEEE Directive At the end of their useful life the packaging product and any battery should be disposed of by a suitable recycling centre Do not dispose of with normal household waste Do not burn Disclaimer Warranty All products manufactured by t mac Technologies Ltd are warranted against defective materials for a period of one year from the date of delivery to the original purchaser A Warning If the Modbus interface is installed in a manner other than that specified in these instructions the protection provided by the unit may be impaired t mac Technologies Ltd assume no liability for damages consequent to the user installer of this product We reserve the right to change this manual at any time without notice The information furnished by us is believed to be accurate and reliable However no responsibility is assumed by us for its use nor for any infringements of pat
4. period t mac at its option will either repair using new or remanufactured parts or replace with a new or remanufactured unit the product at no charge THE WARRANTY WILL NOT APPLY TO THE PRODUCT IF IT HAS BEEN DAMAGED BY MISUSE ALTERATION ACCIDENT IMPROPER HANDLING OR OPERATION OR IF UNAUTHORIZED REPAIRS ARE ATTEMPTED OR MADE SOME EXAMPLES OF DAMAGES NOT COVERED BY WARRANTY INCLUDE BUT ARE NOT LIMITED TO BATTERY LEAKAGE BENDING OR VISIBLE CRACKING OF THE PCB WHICH ARE PRESUMED TO BE DAMAGES RESULTING FROM MISUSE OR ABUSE Product returns Customers wishing to return products or other accessories to t mac Technologies Ltd must first call our office 0844 287 0007 and obtain a Return Authorisation RA number RA numbers are valid for 30 days from the date of issuance and must be obtained within 30 days of purchase date Defective products are eligible for credit or replacement within 30 days of Customer invoice date Replacements will be shipped upon receipt of defective merchandise via ground shipment at our expense unless customer requests an upgrade at their expense Advance replacements are available but must be paid for at the time replacement ships Shipping address will be provided to customer at issuance of RA Return shipping on defective merchandise may be reimbursed up to the original shipping cost of the item Packages must have RA number written visibly on shipping box with a brief description of the product defect ins
5. N RS 485 A C Gateway DC Power in and interface RS 485 Modbus Interface Figure 2 Modbus interface hardware overview e 7 Mounting The Modbus interface should be mounted next to or near to the A C Gateway Suitable space should be provided all around the Modbus interface to allow for cable conduit and additional equipment The Modbus interface should be located so that it is easy to view the LED indicators Enclosure dimensions 51mm 95mm IA Q N con Figure 3 Modbus interface dimensions Mounting points 83mm lt 30mm Figure 4 Modbus interface mounting points Note Appropriate wall fixings must be used Be Connecting power The Modbus interface requires a 10 30VDC supply 10 30VDC supply should be connected to the terminal plugs indicated below 10 30VDC 10 30VDC Supply Positive Supply Negative Figure 5 10 30VDC terminal connection A DO NOT APPLY POWER YET For troubleshooting information regarding powering the Modbus interface see the Troubleshooting chapter Qe Settings There is a bank of 8 DIP switches on the Modbus interface which is used to configure the RS 485 Modbus slave address and baud rate and also the A C Gateway RS 485 baud rate 12343678 RS 485 Modbus slave address Any Modbus Slave ID in the range 10 150 can be chosen using switches 1 4 The address is set in binary multiplied by 10 where the switch positions have the following values
6. ct current value for compressor 2 over current Incorrect current value for compressor 2 locked compressor CT sensor is dislocated from compressor 2 short circuit Protective thermostat for scroll compressor 2 Protective thermostat for scroll compressor 2 is dislocated No oil in compressor 2 Sensed unbalanced power voltage Chattering of magnet switch 1 Espacio Chattering of magnet switch 2 Defective sensor for crank case heater 2 Incorrect current value for compressor 3 over current Incorrect current value for compressor 3 locked compressor CT sensor is dislocated from compressor 3 short circuited Protective thermostat for scroll compressor 3 Protective thermostat for scroll compressor 3 is slipped off No oil in compressor 3 Incorrect connection of oil sensor 2 Incorrect connection of oil sensor 3 Chattering of magnet switch 3 Defective sensor for crank case heater 3 Unused Incorrect address for indoor unit No master indoor unit Mismatch of indoor and outdoor units Setting plural master indoor units for group control Duplicate setting of system address outdoor unit Duplicate setting of priority indoor unit for priority indoor unit Duplicate setting of priority indoor unit for other than priority indoor unit Group control wiring to individually controlled indoor unit No Setting of indoor unit address No Setting of indoor unit capacity No Setting of outdoor unit capacity Mis wi
7. e summarised below Register Name Register Type Description Discrete Input Digital Input Read only register used for holding status information which holds a value of 0 or 1 Can be read using function code 0x02 Coil Digital Output Read and write accessible register which holds a value of 0 or 1 Can be read using function code 0x01 Can be written using function code 0x05 or OxOF Input Register Analogue Input Read only register used for status information which holds a 16 bit value 0 65535 Can be read using function code 0x04 Holding Register Analogue Output Read and write accessible register used for status information which holds a 16 bit value 0 65535 Can be read using function code 0x03 Can be written using function code 0x06 or 0x10 14 Native Modbus interface registers The Modbus interface will provide the following MODBUS registers at the Slave ID specified by the DIP Switches Holding registers Holding Registers Analogue Outputs Register Name Location Length Details decimal Converter State 0 1 Startup 2 Read 3 Write 5 Error 6 Write 0x55 85 decimal to reset the device Input registers Input Registers Analogue Inputs Register Name Location Length Details decimal Number of indoor units 0 1 0 64 detected Global Fault code 1 1 0 255 Firmware version 2 1 0 65535 A C Gate
8. ents or other rights of third parties resulting from its use Copyright and acknowledgements Copyright O 2012 by t mac Technologies Ltd All rights reserved t mac Technologies Ltd Stand Park Sheffield Road Chesterfield Derbyshire S41 8JT United Kingdom Tel 44 0 844 287 0007 FAX 44 0 844 287 0006 Sales email sales t mac co uk Support email support t mac co uk Support telephone 44 0 844 287 0008 t mac website www t mac co uk t mac user web portal www my t mac co uk t mac is a registered trademark of t mac Technologies Ltd All other product names are trademarks or registered trademarks of their respective owners User Manual Part no 065 0057 User Manual revision 3 0 0 Contents Preface Safety warnings Disclaimer Warranty Copyright and acknowledgements Contents Introduction Unpacking Installation Overview Mounting Comnecting power Settings RS 485 Modbus slave address A C Gateway baud rate RS 485 Modbus baud rate Fixed communications settings RS 485 termination Initial power on Summary of Status indicators Modbus Modbus explained Modbus register table Native Modbus interface registers System information Indoor unit information Troubleshooting Technical specification Appendix A Manufacturer s 1 year limited warranty Product returns Appendix B Fault codes ceive 14 14 14 15 16 16 18 19 20 20 20 21 21 Introduction Sanyo Panasonic manu
9. factures a Communication adaptor A C Gateway to allow their air conditioning units to be controlled by an external Building Management System BMS The Sanyo SHA KA128AGB and Panasonic CZ CFUNC2 A C Gateways have an RS 485 port which allows them to interface with the Panasonic Sanyo A C Interface Modbus interface using Panasonic Sanyo s proprietary S NET protocol The Modbus interface will analyse the system on power up and expose information over Modbus The system will update the information continuously and relevant air conditioning settings will have read write access while other information will be read only ede Unpacking The Modbus interface kit contains the following items Installation y User Instructions Modbus Interface Figure 1 Kit content Ge Installation This chapter gives step by step instructions for setting up a new Modbus interface installation Overview The Modbus interface has been designed to be installed in residential commercial light and heavy industrial environments The Modbus interface system should be installed in a manner that complies with the Health and Safety Executive HSE Memorandum of Guidance on Electricity at Work Regulations 1989 Modbus interface hardware overview A C Gateway Acknowledge Indicator RS 485 Modbus _ Address and Baud pa Rate DIP Switches Modbus Acknowledge Indicator A BGND V GNDAB 4 A I I 1 N 4 N KA
10. ide All items must be returned in the original packaging t mac Technologies Ltd is not responsible for any item not received at its return address Allow 14 21 business days for processing returns 20 Fault codes Appendix B The following list details how fault codes are reported by both the Modbus interface and a Panasonic Sanyo wall controller Modbus Wall interface Controller 32 Coo 33 Co1 34 c02 35 C03 36 C04 37 C05 38 C06 44 C12 48 C16 49 C17 50 C18 51 C19 52 C20 53 C21 54 C22 55 C23 56 C24 57 C25 58 C26 63 C31 64 E00 65 E01 66 E02 67 E03 68 E04 69 E05 70 E06 71 E07 72 E08 73 E09 74 E10 75 E11 76 E12 77 E13 78 E14 79 E15 Description Unused Poor setting on Control Address duplicated Discord of number of units in central process control Miswiring of central process control Misconnection of central process control Transmission error of central process control Reception error of central process control Lump alarm by local adapter Poor transmission of the adapter to the unit Poor reception of the adapter from the unit Duplicated control addresses in the adapter Duplication of adapter addresses Unused Non volatile memory in the adapter is abnormal Poor setting of adapter address Faulty host terminal software Faulty host terminal hardware Abnormal processing of the host terminal Communication error in the host terminal Change of constitution the adapte
11. imal value ZXX Z zone XX unit Indoor Unit Address X02 1 Dependent on configuration eg 101 102 201 301 3016 Fault Code X03 1 0x00 system Ok OxFF Coils Coils Discrete Outputs Register Name Location Length Details decimal ON OFF status X00 1 0 Off 1 On Filter status X01 1 0 Clean 1 Dirty 16 Holding registers Holding Registers Analogue Outputs Register Name Location decimal Length Details Temperature Setpoint X00 Value to write Setpoint 35 2 255 OxFF 92 5 C 0 0x00 35 C Mode X01 1 heat 2 cool 3 fan 4 dry 5 auto indicates auto heat when read 6 auto cool this cannot be set AC will decide whether to heat or cool when auto mode is set Fan Speed X02 0 auto 1 high 2 med 3 low Flaps Position X03 1 swing 2 F1 horizontal 3 F2 4 F3 45 degrees 5 F4 6 F5 vertical 17 Troubleshooting This chapter gives suggested solutions to problems that users may encounter when installing and configuring a Modbus interface If there are problems with either communication channel e Ensure the baud rate is set correctly e Try adjusting the termination jumper settings for this channel on the Modbus interface If the Modbus interface does not seem to be responding to the Modbus Master e Ensure the correct slave ID has been set using the DIP switches If the Modbus interface d
12. ions A C Gateway On steadily Start up 5s Device is powered ACK Intermittent flash Indicates a valid transaction with the A C Gateway Please note if one or both of the LEDs are permanently on this indicates that the Modbus interface is powered but no communication traffic is present In this case please check the Slave ID and communication settings Also ensure that both RS 485 networks are wired correctly 13 Modbus Modbus explained Modbus is a master slave protocol which means there are two types of Modbus device Modbus Masters and Modbus Slaves Slave devices simply wait until they receive a command from a Master act upon that command and send a reply to the Master Slaves do not have the ability to send commands to other devices on the bus Master devices are responsible for sending commands to slave devices and receiving data Modbus only permits there to be one Master device on the bus at any one time but up to 247 slaves can be connected at a time Each Slave device must have a unique ID on the bus which is referred to as a Slave ID Each Modbus command the Master sends will contain this slave ID and only the Slave with that ID will reply Modbus register table Modbus Slave devices store data in registers There are four register types and each type has its own register bank Any 32 bit values exposed over 2 registers will have the most significant word MSW in the first register The register types ar
13. mperature from compressor 3 Abnormal sensor for refrigerant gas 2 temperature in the heat exchanger Abnormal sensor for liquid refrigerant 2 temperature in the heat exchanger Abnormal sensor for heat exchanger coil 1 temperature Abnormal sensor for heat exchanger coil 2 temperature Abnormal sensor for compressor 1 current Abnormal sensor for compressor 2 current Abnormal non volatile memory EEPROM in indoor unit Abnormal timer RTC Abnormal non volatile memory EEPROM in outdoor unit unused Incorrect current value for compressor 1 over current Incorrect current value for compressor 1 locked compressor CT sensor is dislocated from compressor 1 Short circuited Protective thermostat for scroll compressor 1 Protective thermostat for scroll compressor 1 is slipped off 2206 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 224 225 226 227 228 H06 H07 H08 H09 H10 H11 H12 H13 H14 H15 H16 H17 H18 H19 H20 H21 H22 H23 H24 H25 H26 H27 H28 H29 H30 Loo Lot L02 L03 L04 L05 Loe L07 Los Log L10 L11 L12 L13 L14 L15 P00 Pot P02 P03 P04 Activation of low pressure switch No oil in compressor 1 Incorrect connection of oil sensor 1 Chattering of magnet switch 1 Multi Defective sensor for crank case heater 1 Incorre
14. ng Modbus interface RS 485 Modbus settings are fixed and cannot be changed 8 Data bits No Parity 1 Stop Bit 11 RS 485 termination Depending upon the application environment and length of connection between the Modbus interface and the A C Gateway and between the Modbus interface and Modbus Master termination and or pull up down resistors might be required The Modbus interface has built in jumper selectable termination and pull up down resistors located next to each of the RS 485 connections on the Modbus interface circuit board AIC Gateway RS485 Termination Modbus RS 485 Termination C3 Termination Resistor C B Pull down C3 Termination Resistor B Pull down A Pull up A Pull up Figure 6 RS 485 termination jumpers 120 Initial power on Once the Modbus interface has been configured and the A C Gateway and Modbus Master are connected apply power to the unit Both the indicators will begin flashing if both communication channels are operating correctly If either indicator remains off there is a problem with this channel For troubleshooting information regarding communications problems see the Troubleshooting chapter Summary of Status indicators There are 2 status LEDs on the Modbus interface During normal operation the LED indications are as follows Indicator Description Modbus ACK On steadily Start up 5s Device is powered Intermittent flash Indicates valid Modbus communicat
15. oes not appear to be powered up try the following e Check the supply to the Modbus interface with a multimeter If the Modbus interface does not appear to be communicating with the A C Gateway try the following e Ensure the correct address is set on the A C Gateway and this matches the value set on the Modbus interface If no units are detected by the Modbus interface e Ensure AC system wiring is connected correctly to the appropriate link on the A C Gateway 18 Technical specification Parameter Min Typ Max Comments Power supply Voltage 10V DC 24V DC 30V DC Connection via 1x 4 way 3 81mm Current 0 1A pitch connector Terminals Cable size 3 81mm pitch connectors 16AWG 1 5mm Indicators 2 Status LEDs Modbus ACK and A C Gateway ACK Communication Ports RS 485 A C Gateway 9600b s 19200b s Connection via 3 81mm 3 way connector RS 485 Modbus 1200b s 9600b s 115200b s Connection via 3 81mm 4 way connector Environmental Operating temperature 10 C 40 C Storage temperature 20 C 50 C Relative humidity 90 Non condensing Environment resist IP30 Dimensions Length 95mm Width 51mm Depth 19mm Weight 0 2kg 19 Appendix A Manufacturer s 1 year limited warranty t mac Technologies Ltd t mac warrants all products against defects in materials and workmanship for a period of one 1 year from the date of original consumer purchase in the U K If a defect exists during the warranty
16. r detects the change Unused Poor reception of the signal on the remote controller Poor transmission of the signal on the remote controller Poor reception of the indoor unit from the remote controller central process control Poor reception of the indoor unit from the outdoor unit Poor transmission of the indoor unit to the outdoor unit Poor reception of the outdoor unit from the indoor unit Poor transmission of the outdoor unit to the indoor unit Duplicated setting of indoor unit s address Setting multiple master remote controllers Unused Poor reception of the indoor unit from the signal output P C B CR 3WAY TG No auto address setting Auto address is in setting Poor transmission of indoor unit to the remote controller Duplicated address of master indoor unit in group processing control Alarm for auto address setting Number of indoor units is too small 21 80 81 82 83 87 88 89 90 91 92 93 94 96 97 98 99 100 101 102 103 104 105 106 107 108 110 112 114 115 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 E16 E17 E18 E19 E23 E24 E25 E26 E27 E28 E29 E30 FOO F01 F02 F03 F04 F05 FO6 FO7 F08 F09 F10 F11 F13 F14 F16 F18 F19 F21 F22 F23 F24 F25 F26 F27 F28 F29 F30 F31 HOO H01 H02 HO3 H04 HO5 Alarm for auto address setting Number of indoor units is too large Poor transmission from outdoor unit to indoor unit
17. ring of group control wire Espacio Discord of indoor unit s capacity Multi Poor setting of indoor unit s type Discord of power frequency 50 60Hz Defective double duct bearing Unused Abnormal indoor fan motor Actuation of outdoor fan motor protective thermostats for CM and AC High discharge temperature of compressor Actuation of high refrigerant pressure switch 236 229 233 234 239 241 242 244 245 254 255 PO5 P09 P10 P15 P17 P18 P20 P21 P30 P31 Reversed phase of the power source Poor connection of ceiling panel connector for indoor unit Actuation of indoor unit float switch No refrigerant gas Abnormal discharge gas temperature from compressor 2 Abnormal discharge gas temperature from compressor 3 Abnormally high refrigerant gas pressure Abnormal pressure difference in compressor oil Abnormal sub indoor units in group control Centralized processing control detected the abnormality Abnormal group control 24
18. way baud rate 3 1 9600 or 19200 DIP switches 4 1 Decimal representation of switches Indoor Unit 1 Address 20 1 Eg 101 Indoor Unit 2 Address 21 1 Eg 102 Indoor Unit 63 Address 82 1 Eg 415 Indoor Unit 64 Address 83 1 Eg 416 15 System information Following on from the Slave ID specified by the DIP Switches each system appears sequentially with the following registers detailing system information starting at 0 For example System 1 will be the next Modbus Slave ID after that specified by the DIP Switches Input registers Input Registers Analogue Inputs Register Name Location Length Details decimal Number of units in system 0 1 0 16 Discrete inputs Discrete Inputs Discrete Inputs Register Name Location Length Details decimal System fault one or more 0 1 0 no fault 1 fault detected units in fault Indoor unit information The following information starts at register X00 Where X is the unit number within a system eg for unit 302 its registers will be at 200 on MODBUS slave ID base 3 These will be available for each indoor unit connected in a system Input registers Input Registers Analogue Inputs Register Name Location Length Details decimal Return Air Temperature X00 1 Temperature value 2 35 255 OxFF 92 5 C 0 0x00 35 C Zone Address X01 1 3 digit dec
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