4
Building Technologies
125-202
06/06/2017
Powering the Meter ...................................................................................................51
MD-BMS or MD-BMED Single-Phase Connections....................................................51
MD-BMS and MD-BMED Power Meters Wiring Diagrams .............................................. 52
Checking Phases .......................................................................................................... 57
Verifying the MD-BM and MD-BMS Power Meter Setup Using the LEDs....................57
Verifying Installation with ViewPoint Software ................................................................ 58
Real-Time Values......................................................................................................59
Read/Write Registers – Read/Set Objects..................................................................61
Firmware...................................................................................................................63
Appendices ............................................................................................................... 65
Appendix A - MD-BMS and MD-BMED Power Meters BACnet Analog Value Objects..... 65
Configuration Objects (10020 - 13000) ......................................................................69
Pulse Output/Input Objects........................................................................................71
Device Status Objects ...............................................................................................71
Positive Power/Energy Accumulator Objects..............................................................71
Negative Power/Energy Accumulator Objects............................................................72
Appendix B - MD-BMS and MD-BMED Power Meters Modbus Absolute/Net Value
Protocol Commands ..................................................................................................86
Appendix C - Connecting Multiple MD Power Meters to an RS-485 Network .................. 91
Communication Protocol............................................................................................91
Daisy Chain Layout for RS-485 Network....................................................................91
Networking Using the BACnet MS/TP/Modbus RTU Protocol.....................................91
Appendix D - Installing Firmware Updates for the MD-BMS and MD-BMED Power Meter92
Downloading and Installing Firmware.........................................................................92
Verifying Installation with ViewPoint Software ............................................................92
Appendix E – Modbus VERIS H8035/H8036 Emulation.................................................. 95
Appendix F - Decimal to Hexadecimal Conversion Table ............................................. 100
Appendix G - MD-BMED with Visual Display................................................................ 102
Appendix H - Troubleshooting...................................................................................... 104
Troubleshooting Communication Issues ..................................................................104
Appendix I- Core Measurement Parameters: Voltage, Current, and Frequency ............ 106
Appendix J - Core Measurement Parameters: Power Factor ........................................ 108
Appendix K - Core Measurement Parameters - Power ................................................. 110
Appendix L - Core Measurement Parameters - Energy ................................................ 115
Frequently Asked Questions - FAQs........................................................................... 118
Glossary ................................................................................................................. 120