Procon MelcoBEMS MINI Installation Manual
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Procon MelcoBEMS MINI Installation Manual

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Procon
MelcoBEMS MINI (A1M)
FOR INSTALLERS
INSTALLATION MANUAL
Manual version 1.0.1
Firmware version 3.0.1
For safe and correct use, please read this installation manual thoroughly before installing the PROCON
MelcoBEMS MINI (A1M).

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  • Page 1 Procon MelcoBEMS MINI (A1M) FOR INSTALLERS INSTALLATION MANUAL Manual version 1.0.1 Firmware version 3.0.1 For safe and correct use, please read this installation manual thoroughly before installing the PROCON MelcoBEMS MINI (A1M).

  • Page 3: Preface

    Do not expose to rain or moisture. Shielded Signal Cables: Use only shielded cables for connecting peripherals to any Procon MelcoBEMS MINI (A1M) device to reduce the possibility of interference with radio communications services. Using shielded cables ensures that you maintain the appropriate EMC classification for the intended environment.

  • Page 4: Amendment Register

    Amendment Register Latest Document Firmware Date Author Notes Version Version 1.0.0 3.0.0 08/05/15 Initial version for firmware V1.0.0 Added ‘Applicable Unit Type’ columns to Air-To-Water 1.0.1 3.0.1 16/06/15 Modbus tables. Other minor modifications. Any additional notes since printing will be appended to the rear of this document on separate sheets of paper.
  • Page 5 [Fig. 1] RS-485 connector CN105/CN92 connection lead...
  • Page 6 [Fig. 2] Air to air unit Air to water unit Page 2 of 47...

  • Page 7: Table Of Contents

    Contents Preface ..................................... i Safety warnings ................................i Disclaimer ..................................i Amendment Register ..............................ii Safety precautions ..............................4 Overview ................................5 DIP switch settings ............................... 6 3.1. RS-485 Node address ............................ 6 3.2. RS-485 communication settings ........................6 3.3. Protocol selection ............................

  • Page 8: Safety Precautions

    1. Safety precautions Before installing the unit, make sure you read all the  “Safety precautions” The “Safety precautions” provide very important points  regarding safety. Make sure you follow them Symbols used in the text Warning: Describes precautions that should be observed to prevent danger of injury or death to the user. Caution: Describes precautions that should be observed to prevent damage to the unit.

  • Page 9: Overview

    Appendix B lists the compatible Air-To-Water indoor units. Figure 1 shows the MelcoBEMS MINI (A1M) converter. Figure 2 shows the CN105/CN92 connector on the indoor unit PCB that the MelcoBEMS MINI (A1M) connects to, for both Air-to-Air and Air-To-Water type units.

  • Page 10: Dip Switch Settings

    Note: When all switches are set to the OFF position a node address of 1 is assumed. Note: Each MelcoBEMS MINI (A1M) connected on the same RS-485 network must be set to a unique node address. 3.2. RS-485 communication settings The RS-485 settings are set using DIP switch 6.

  • Page 11: Protocol Selection

    3.3. Protocol selection The RS485 protocol is set using DIP switch 7. When the switch is in the ON position the Modbus RTU protocol is selected. Switch 7 Protocol selection BACnet MS/TP Modbus RTU 3.4. Deadband mode The Deadband feature can be enabled using DIP switch 8. When the switch is in the OFF position the Deadband feature is disabled.

  • Page 12: Deadband Mode

    4.2. Operation When enabled, the MelcoBEMS MINI (A1M) controls the Mode and Temperature Setpoint based on the Room (return air) Temperature. While the room temperature is less than the Heating Setpoint the unit will be set to HEAT mode with a setpoint of 28ºC.

  • Page 13: Initialisation

    4.3. Initialisation When the MelcoBEMS MINI (A1M) powers up it will set the mode, which will be determined by the room temperature. If less than the Heating Setpoint the unit will be set to HEAT mode with a setpoint of 28ºC.

  • Page 14: Setpoint Offset

    As a hypothetical example, consider the BMS Virtual Setpoint being set to 21ºC and the indoor unit return air temperature remaining constant at 22ºC. As the BMS Room Temperature decreases the MelcoBEMS MINI (A1M) increases the indoor unit’s temperature setpoint.
  • Page 15 If the BMS Room Temperature is set to 0ºC (which it will be on power up) the setpoint offset feature will be disabled. It will only activate when the BMS Room Temperature is not 0ºC. To disable the feature without removing the MelcoBEMS MINI (A1M) power, simply set the BMS Room Temperature to 0ºC.

  • Page 16: Rs-485 Termination

    6. RS-485 termination An RS-485 termination resistor can be enabled on the MelcoBEMS MINI (A1M) PCB using the single jumper labeled The jumper setting is summarised below: Jumper Setting Description Not fitted Termination resistor not enabled Fitted Termination resistor enabled...

  • Page 17: Installation

    7.1. Physical connection The MelcoBEMS MINI (A1M) has a 1 metre flying lead to connect directly into the CN105/CN92 connector on the controller PCB. As an example, Figure 2 shows this connection on a Mr Slim indoor unit and a CRHV unit.

  • Page 18: Status Leds

    8. Status LEDs There are two status LEDs on the MelcoBEMS MINI (A1M). The LED indications are as follows: LED Name Colour Functionality Lit when A1M is powered, flashing indicates valid communication AC ACK Green with the indoor unit. Lit when A1M is powered, flashing indicates valid Modbus...

  • Page 19: Bacnet

    9. BACnet 9.1. BACnet MS/TP The MelcoBEMS MINI (A1M) can be connected to a BACnet MS/TP network using RS-485. BACnet protocol can be selected using DIP switch 7 (see section 3.3). 9.2. Object types supported Object Type Property Analogue Multi State...

  • Page 20: Object List

    9.3. Object list The MelcoBEMS MINI (A1M) currently has objects for certain ATA protocol data points, detailed in the following table. Object type Object ID Object name Notes 0 = Drive OFF Binary Output BO01 Drive OFF/ON 1 = Drive ON Value in either ºC or ºF, depending on the...

  • Page 21: Modbus Connection

    Modbus connection 10.1. Modbus background 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.
  • Page 22 Caution: RS-485 biasing jumpers must be fitted on the Procon M2M (if used). Please refer to the diagram below. Page 18 of 47...

  • Page 23: Modbus Tables - Air-To-Air Systems

    Some BMS controllers may not be able to read signed register values (i.e. values which can be negative in value), so the MelcoBEMS MINI (A1M) also exposes an unsigned version of those registers (these registers will not return a negative value).
  • Page 24 9 = 56000 10 = 57600 11 = 115200 0 = 9600 1 = 19200 BACnet RS-485 Baud Rate 2 = 38400 3 = 57600 0 = None RS-485 Parity Type 40007 1 = Even 2 = Odd 0 = Drive OFF Drive On/Off 40008 1 = Drive ON...

  • Page 25: Input Registers

    (Refer to indoor unit documentation for description of other fault code values) Firmware Version 30004 MelcoBEMS MINI (A1M) firmware version Value of a counter which increments upon every valid Modbus Comms Counter 30006 Modbus command received. Counter is reset to zero when value exceeds 65535.

  • Page 26: Modbus Tables - Air-To-Water Systems

    Modbus tables – Air-To-Water systems Some BMS controllers can only read Modbus Holding Registers, so the MelcoBEMS MINI (A1M) also exposes all Discrete, Coil and Input Registers as Holding Registers. The Discrete Input registers and Input registers are not writable so their equivalent Holding Register is read only and marked [READ ONLY].
  • Page 27 5 = Freeze Stat 6 = Legionella 7 = Heating-Eco 0 = Normal  Operating Mode (DHW) 40028 1 = Eco 0 = Heating Room Temp 1 = Heating Flow Temp 2 = Heating Heat Curve   A/C Mode – Zone 1 40029 3 = Cooling Room Temp (not on 13K model) 4 = Cooling Flow Temp...
  • Page 28     Current Hour 40049 0 … 23     Current Minute 40050 0 … 59 Outdoor Temperature By BMS Temperature value in ºC multiplied by 10.   40051 (signed) 0xFE70 = -40ºC … 0x036B = 87.5ºC ...
  • Page 29 Heat Pump Frequency – Slave 5 Frequency value in Hz     40079 [READ ONLY] 0 = 0Hz … 255 = 255Hz Heat Pump Frequency – Slave 6 Frequency value in Hz     40080 [READ ONLY] 0 = 0Hz …...
  • Page 30 Flow Temperature Temperature value in ºC multiplied by 100.   [READ ONLY] (see note **) 40103 Water Outlet Temperature Temperature value in ºC multiplied by 100.     [READ ONLY] (see note **) Return Temperature (signed) Temperature value in ºC multiplied by 100. ...
  • Page 31 Flow SW1 (IN2)   40122 0 = OFF, 1 = ON [READ ONLY] Flow SW2 (IN3)   40123 0 = OFF, 1 = ON [READ ONLY] Flow SW3 (IN7)   40124 0 = OFF, 1 = ON [READ ONLY] Demand (IN4) ...
  • Page 32 Boiler ON/OFF   0 = Stop, 1 = Run [READ ONLY] 40145 External Heater Operation 1   0 = Stop, 1 = Run [READ ONLY] Booster Heater 1 ON/OFF   40146 0 = Stop, 1 = Run [READ ONLY] Booster Heater 2 ON/OFF ...
  • Page 33 Heat Pump Frequency – Slave Frequency value in Hz   40171 0 = 0Hz … 255 = 255Hz [READ ONLY] Heat Pump Frequency – Slave Frequency value in Hz   40172 0 = 0Hz … 255 = 255Hz [READ ONLY] Heat Pump Frequency –...
  • Page 34 Heat Pump 30 ON/OFF   40197 0 = Stop, 1 = Run [READ ONLY] Heat Pump 31 ON/OFF   40198 0 = Stop, 1 = Run [READ ONLY] Heat Pump 32 ON/OFF   40199 0 = Stop, 1 = Run [READ ONLY] 199 - 40200 - 40215 Reserved...
  • Page 35 Electric Energy 4 Electric Energy in kWh multiplied by 100     40238 † [READ ONLY] (see note Electric Energy 5 Electric Energy in kWh multiplied by 100     40239 † [READ ONLY] (see note Electric Energy 6 Electric Energy in kWh multiplied by 100 ...
  • Page 36 Water Pump 1 – PWM Duty Duty value in %     Feedback 40264 0 = 0% … 100 = 100% [READ ONLY] 3-Way Valve 1 0 = OFF (stop)   40265 [READ ONLY] 1 = ON (run) Version of Protocol (upper) Version of Protocol is a value in BCD ...
  • Page 37 ^^ 7-Segment Display Error Code Digit 2 1 – 15 = 1 - F 16 = O 17 = H 18 = J 19 = L 20 = P 21 = U † Electric Energy 0x0000 = 0.00 kWh 0x0001 = 0.01 kWh …...

  • Page 38: Input Registers

    11.6. Input registers Input Registers are read using function code 04. Input Register (Analogue Input) Applicable Unit Type Modicon Register Name Addr Details Address 0x8000 = No error 0x6999 = Bad communication with unit     Fault/Error Code (hex) 30002 (Refer to indoor unit documentation for description of other fault code values)
  • Page 39 Frequency value in Hz     Heat Pump Frequency – Slave 3 30036 0 = 0Hz … 255 = 255Hz Frequency value in Hz     Heat Pump Frequency – Slave 4 30037 0 = 0Hz … 255 = 255Hz Frequency value in Hz ...
  • Page 40 Water Outlet Temperature Temperature value in ºC multiplied by 100.     (signed) (see note *) Temperature value in ºC multiplied by 100.   Flow Temperature (see note **) 30062 Temperature value in ºC multiplied by 100. ...
  • Page 41 Value in hours multiplied by 100 Heat Pump Run Time 0 = 0 hours     30081 (hours x100) … 65535 = 6553500 hours Value in hours multiplied by 100 Heat Pump Refrigerant Address 0 = 0 hours ...
  • Page 42 Heat Pump Frequency – Slave Frequency value in Hz   30105 0 = 0Hz … 255 = 255Hz Heat Pump Frequency – Slave Frequency value in Hz   30106 0 = 0Hz … 255 = 255Hz Heat Pump Frequency – Slave Frequency value in Hz ...
  • Page 43 Brine Outlet Temperature 1 Temperature value in ºC multiplied by 100.   30132 (signed) (see note *) Temperature value in ºC multiplied by 100.   Brine Outlet Temperature 1 30133 (see note **) Brine Outlet Temperature 2 Temperature value in ºC multiplied by 100. ...

  • Page 44: Coils

    * Temperature in ºC multiplied by 100. 0x8000 = -327.68ºC 0x8001 = -327.67ºC … 0xFFFF = -0.01ºC 0x0000 = 0.00ºC … 0x7FFE = 327.66ºC 0x7FFF = 327.67ºC ** Temperature in ºC multiplied by 100. 0x0000 = 0.00ºC 0x0001 = 0.01ºC …...

  • Page 45: Discrete Inputs

    11.8. Discrete Inputs Discrete Inputs are read using function code 02. Discrete Input (Digital Input) Applicable Unit Type Modicon Register Name Addr Details Address   Room Thermo 1 (IN1) 10001 0 = OFF, 1 = ON   Room Thermo 2 (IN6) 10002 0 = OFF, 1 = ON ...
  • Page 46   Immersion Heater ON/OFF 10021 0 = Stop, 1 = Run     Water Pump 1 ON/OFF 10022 0 = Stop, 1 = Run     Water Pump 2 ON/OFF 10023 0 = Stop, 1 = Run ...
  • Page 47   Heat Pump 31 ON/OFF 10048 0 = Stop, 1 = Run   Heat Pump 32 ON/OFF 10049 0 = Stop, 1 = Run 49 - 64 10050 - 10065 Reserved   External Heater ON/OFF 10066 0 = Stop, 1 = Run ...

  • Page 48: Appendix A - Compatible Air-To-Air Units

    Appendix A – Compatible Air-To-Air units UK Models M Series MSZ-SF25/35/50VE MSZ-GF60/71VE MSZ-EF25/35/50VES/VEW/VEB MSZ-FH25/35VE MSZ-FD25/35VA MSZ-GE22/25/35/50/60/71VA MSZ-GC22/25/35VA MSZ-GB50VA MSZ-GA22/25/35/50/60/71VA MFZ-KA25/35/50VA Mr Slim PCA-RP50/60/71/100/125/140KAQ PEAD-RP35/50/60/71/100/125/140JAQ PEAD-RP35/50/60/71/100/125/140EA/EA2 PEA-RP200/250GAQ PKA-RP35/50HAL PKA-RP60/71/100KAL PLA-ZRP35/50/60/71/100/125/140BA/BA2 PLA-RP35/50/60/71/100/125/140BA/BA2/BA3 PLA-RP35/50/60/71/100/125/140AA/AA2 PSA-RP71/100/125/140KA PSA-RP71/100/125/140GA SEZ-KD25/35/50/60/71VAQ SEZ-KA35/50/60/71VA SLZ-KA25/35/50VAQ SLZ-KA25/35/50VA Models Not Supported: MSZ-HJ25/35VA MSZ-HC25/35VA/VAB PCA-RP71/125HA/HAQ...

  • Page 49: Appendix B - Compatible Air-To-Water Units

    Appendix B – Compatible Air-To-Water units UK Models Ecodan FTC4 Controllers: PAC-IF052B-E PAC-IF051B-E Ecodan FTC4 Hydrobox: EHSC-VM6B EHSC-YM9B EHSC-VM6EB EHSC-YM9EB EHPX-VM2B EHPX-VM6B EHPX-YM9B ERSC-VM2B EHSC-VM2B EHSC-TM9B Ecodan FTC4 Cylinder: EHST20C-VM6HB EHST20C-YM9HB EHST20C-VM6B EHST20C-YM9B EHST20C-VM6EB EHST20C-YM9EB EHST20C-VM6SB EHPT20X-VM2HB EHPT20X-VM6HB EHPT20X-YM9HB EHPT20X-VM6B EHPT20X-YM9B EHST-20CVM2B EHST20C-TM9HB...
  • Page 50 Page 46 of 47...
  • Page 51 Page 47 of 47...
  • Page 52 Please be sure to put the contact address/telephone number on this manual before handing it to the customer. MITSUBISHI ELECTRIC UK MITSUBISHI ELECTRIC UK, TRAVELLERS LANE, HATFIELD, HERTFORDSHIRE, AL10 8XB...

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