Siemens MD-BMS, MD-BMED User Manual

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Building Technologies

MD-BMS and MD-BMED Po wer Meters

User Guide

125-202 06/06/2017 125-202, Rev.CA

Page 2

Notice

Document inform ation is subject to change without notice by Siemens Industry, Inc. Companies, names, and various data used in examples are fictit ious unless otherwise noted. No part of this document may be reproduced or transmitted in any form or by any means, elect ronic or mechanical, for any purpose, wit hout the express writt en permission of Siemens Industry, Inc.

All software des cribed in this document is furnished under a license agreement and may be used or copied only in accordance with license term s.

To the Reader

Your feedback is important to us. If you have comments about this manual, please submit them to: SBT_technical.editor.us.sbt@siemens.com

Other product or company names mentioned herein may be the trademarks of their respective owners.

Printed in the USA.

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Table of Contents

Introduction

................................

.................

Product Description

................................

.........

Certificate of Calibration

................................

..7Warranty

................................

.........................

Meter Anatomy

................................

................

Safety Summary and Specifications

................................

.................

Sommaire des inf ormations de séc

urité

................................

....

MD-BMS and MD

BMED Technical Specifications

................................

....................

Maintenance

................................

..................

Prepping for Installation

................................

...............................

Where to Obtain ViewPoint Software

................................

.............

Installing the ViewP oint Software

................................

...................

Connecting a Communication Cable

................................

..............

Connecting and Communicating using a USB Connection

................................

........

Connecting and Communicating Using an Ethernet (T CP/IP) Connection (MD

BMED

Communications LEDs

................................

Version Control

................................

..............

Meter Setup

................................

...................

Entering Wiring I nformation for an Element

................................

...............................

Selecting a Scalar

................................

.....

Comms Setup (Communications Setup)

................................

........

RS-485 Settings

................................

.......

BACnet Device Settings

................................

...........................

Ethernet Settings

................................

......

Connecting the Port s

................................

.....

Establishing Comm

unication Protocol

................................

............

Switching Between BACnet and Modbus Mode

................................

.........................

Installation

................................

.................

Mounting the MD

BMS and MD

BMED Power Meters

................................

....................

Wiring Connections on t he MD

BMS and MD

BMED Power Meters

...............................

Completing the Installation

................................

.............................

Using the Digital Pulse O utput Port Functio

................................

Modbus Output Port Regist ers

................................

..................

BACnet Output Port Objects

................................

.....................

Wiring CTs

................................

....................

Completi

ng the Wiring Connections

-RS-

485, Voltage Leads and CTs

.....................

Connecting Split

Core Mil

livolt CTs to a Load

................................

...........................

Connecting Rogowski Coil CTs to a Load

................................

CT Wire Lead Polarity

................................

...............................

Connecting the Voltage

................................

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Powering the Meter

................................

...

MD-BMS or MD

BMED Single

Phase Conne

ctions

................................

....................

MD-BMS and MD

BMED Power Meters Wiring Diagrams

................................

..............

Checking Phases

................................

..........

Verifying the MD

BM and MD

BMS Power Meter Setup Using the LEDs

....................

Verifying Installation with ViewPoint Software

................................

Real

Time Values

................................

......

Read/Write Registers

–

Read/Set Objects

................................

..61Firmware

................................

...................

Appendices

................................

...............

Appendix A

-MD-

BMS and MD

BMED Power Meters BACnet Analog Value Objects

.....65Configuration Objects (10020

13000)

................................

......

Pulse Output/Input Objects

................................

........................

Device Status Objects

................................

...............................

Positive Power/Energy Accumulator Objects

................................

..............................

Negative Power/Ener gy Accumulator Object s

................................

............................

Appendix B

-MD-

BMS and MD

BMED Power Meters Modbus Absolute/Net Value

Protocol Commands

................................

Appendix C

-Connecting Multiple MD Power Meters to an RS

485 Network

..................

Communication Prot ocol

................................

............................

Daisy Chain Layout for RS

485 Network

................................

....

Networking Using the BACnet MS/TP/Modbus RTU Protocol

................................

.....91Appendix D

Installing Firm ware Updates for the MD

BMS and MD

BMED Power Meter

Downloading and Installing Firmware

................................

.........

Verifying Installation with ViewPoint Software

................................

............................

Appendix E

–

Modbus VERIS H8035/H8036 Emulation

................................

..................

Appendix F

Decimal to Hexad

ecimal 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

Cor

e Measurement Parameters

Energy

................................

................

115

Frequently Ask ed Questions

FAQs

................................

...........

118

Glossary

................................

.................

120

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Product Description

Introduction

Product Description

MD-BMS and MD-BMED Power Meters monitor the voltage, current, power, power factor, energy, and many other electrical paramet ers on single- and three-phase electrical systems. Each MD-BMS and MD-BMED meter uses dir ect connections to each phase of the voltage, and uses current transform ers t o monitor each phase of the current. Information on energy use, demand, power factor, line frequency, and more are derived from the voltage and current input s.

The communicat ions interface to the meters is an RS-485 serial or E thernet connection that uses the BACnet Master Slave Token Passing ( MS/TP) protocol (default) or Modbus protocol (user-selectable) for sending commands and retrieving data. A separate remote terminal unit (RTU), Data Logger, or Building Management and Control System is usually connected to the MD-BMS and MD-BMED meters to provide data recording and trend logging plus a human interface or display.

The MD-BMS and MD-BMED meters are light-weight and compact enough to mount within an electrical panel. They are used for long-term monitoring of elect rical systems.

Up to 100 MD-BMS and MD-BMED serial meters can be connected to a single BACnet MS/TP network for monit oring and recording power usage at multiple locations within a single site. Up t o 150 serial meters can be connected to a Modbus RTU network. The total number of Ethernet units that can be connect ed is equal to the number of available IP addresses. The actual number of device connections may be less, depending on network bandwidt h considerations.

There is a configurable digital pulse output port on the MD-BMS and MD-BMED that can be used to output kWh, kVARh, or kVAh pulses to external devices, or to toggle on and off to control a remote device or relay.

The MD-BMED Power Meter includes a backlit visual display that cycles through meter information and real-time values of Volts, Amps, KW, KVA, Power Factor, kWh, and so on. See

Appendix H

Introduction

Table 1: Product Number s.

Part Nu mb er Power Meter Kit D escription

MD-BMS Power Meter Bundled Kits, Standard

MD-BMS-3-CTSC-100A Meter with three 100A, spl it-core current transformers with 1" windows

MD-BMS-3-CTSC-200A Meter with three 200A, spl it-core current transformers with 1" windows

MD-BMS-3-CTSC-400A Meter with three 400A, split-core current transformers with 1.25" windows

MD-BMS-3-CTSC-600A Meter with three 600A, spl it-core current transformers with 2" windows

MD-BMS-3-RC-16 Meter with three 4000A, 16” Rogowski Coi l CTs, wit h 5" diameter windows

MD-BMS-3-RC-36 Meter with three 4000A, 36” Rogowski Coi l CTs wit h 10” diam eter wi ndows

MD-BMED Power Meter, with Ethernet an d Display, Bundled Kits, Standard

MD-BMED-3-CTSC-1 00 Meter wit h display and Ethern et, and three 100A, split-core current transformers with 1" windows

MD- BMED-3-CTSC-200 Meter wit h display and Ethern et, and three 200A, split-core current transformers with 1" windows

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Introduction

Product Description

MD-BMED Power Meter, with Ethernet an d Display, Bundled Kits, Standard

MD- BMED-3-CTSC-400 Meter with display and Ethe rnet, and three 400A, split-c ore current trans formers with 1.25" w indows

MD- BMED-3-CTSC-600 Meter wit h display and Ethern et, and three 600A, split-core current transformers with 2" windows

MD- BMED-3-RC-16 Meter with display and Ethernet, and three 4000A, 16 ” Rogows ki Coil CTs w ith 5” di ameter windows

MD- BMED-3-RC-36 Meter with display and Ethernet, and three 4000A, 36 ” Rogows ki Coil CTs w ith 10” d iameter windows

MD-BMS Power Meter Bundled Kits; Revenue Grade

MD-BMS-3-RGCT-50A Meter with three 50 A, split-c ore current transformers with 0.5” windows

MD-BMS-3-RGCT-100A Meter with three 100A, split-core current transformers with 1.25” windows

MD-BMS-3-RCGT-200A Meter with three 200A, split-core current transformers with 1.25” windows

MD-BMS-3-RGCT-400A Meter with three 400A, split-core current transformers with 1.25” windows

MD-BMED Power Meter Bundled Kits; Revenue Grade with Display and Ethernet

MD-BMED-3-RGCT-50 Meter, display and Ethernet, three 50A, split-core current transformers with 0.5” windows

MD-BMED-3-RGCT-100 Meter, display and Ethernet, three 100A, spl it-core current transformers with 1.25” windows

MD-BMED-3-RGCT-200 Meter, display and Ethernet, three 200A, spl it-core current transformers with 1.25” windows

MD-BMED-3-RGCT-400 Meter, display and Ethernet, three 400A, spl it-core current transformers with 1.25” windows

Individual MD Series Power Metering Devices (Individually orderable, not in a kit).

Part Nu mb er Desc ription

MD Power Meters ONLY, no CTs included (field configure to selected CTs onsite)

MD-BMS Power Meter Only, BACnet-Modbus

MD-BMED Power Meter Only, BACnet-Modbus with Display and Ethernet

Curre nt Transformers (CTs), Split Core Models, Quantity 1

SCT-HSC-0050-U 50-Amp MINI hinged CT with 0.4“ window

SCT-HMC-0100-U 100-Amp, MIDI Hinged CT wi th 1“ window (used in MD-BM*-3-CTSC-100* meter kits)

SCT-HMC-0200-U 200-Amp, MINI Hinged CT wi th 1“ window (used in MD-BM*-3-CTSC-200* meter kits)

SCT-SCS-0050-U 50-Amp, Small Split Core CT with 0.75“ window

SCT-SCS-0100-U 100-Amp, Small Split Core CT with 0.75“ window

SCT-SCM-0100-U 100-Amp, Medium Split Cor e CT with 1.25“ window

SCT-SCM-0200-U 200-Amp, Medium Split Cor e CT with 1.25“ window

SCT-SCM-0400-U 400-Amp, Medium Split Core CT with 1.25“ window (used in MD-BM*-3-CTSC-400* meter kits

SCT-SCM-0600-U 600-Amp, Medium Split Cor e CT with 1.25“ window

SCT-SCL-0600-U 600-Amp, Large Split Core CT with 2“ window (used in MD-BM*-3-CTSC-600* meter kits)

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Product Description

Curre nt Transformers (CTs), Split Core Models, Quantity 1

SCT-SCL-1000-U 1000-Amp, Lar ge Split Core CT w ith 2“ window

Current Transformers (CTs), Rogowski Coil Models, Quantity 1

SCT-R16-A4-U 4000-Amp, Rogowski Coil, 16“ wit 4.5“ window (us ed in MD-BM*-3R C-16 meter kits)

SCT-R24-A4-U 4000-Amp, Rogowski Coil, 24“ with 7“ window

SCT-R36-A4-U 4000 Amp, Rogowski Coil, 36“ with 10.8“ window (used in MD-BM*-3-RC-36 meter kits)

Current Transformers (CTs), Revenue Grade Split Core Models, Quantity 1

SCT-SRS-005-U 5-Amp, Revenue Grade, Small Split Core CT with 0.4“ window

SCT-SRS-050-U 50-Amp, Revenue Grade, Small Split Core CT wit 0.4“ window

SCT-SRL-100-U 100-Amp, Revenue Grade, Large Split Core CT with 1.25“ window

SCT-SRL-200-U 200-Amp, Revenue Grade, Large Split Core CT with 1.25“ window

SCT-SRL-400-U 400-Amp, Revenue Grade, Large Split Core CT with 1.25“ window

Introduction

Current Transformers (CTs), Revenue Grade Toroidal Solid Core Models, Quantity 1

SCT-RGT12-0005-U 5-Amp, Reven ue Grade, Toroidal Solid Core CT with 0.5“ window

SCT-RGT12-0020-U 20-Amp, Revenue Grade, Toroidal Solid Core CT with 0.5“ window

SCT-RGT123-0050-U 50-Amp, Revenue Grade, Toroidal Solid Core CT with 0.5“ window

SCT-RGT12-0100-U 100-Amp, Revenue Grade, Toroidal Solid Core CT with 0.5“ window

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Introduction

Certificate of Calibration

The MD-BMS and MD-BMED Power M eters include documents such as the Certificate of Calibration (COC) that has information about the meter, and is valuable for tech support. Save these documents in a safe place when not in use.

Warranty

Siemens has reset the five-year warranty date start to October 1, 2016, which will provide extended warranty coverage to cur rently installed MD Power Meters thr ough September 30, 2021, for all units prior to Rev . G. Rev. G units. Newer units will carry the standard warranty.

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Meter Anatomy

This meter may c ontain life threatening voltages.

Introduction

Safety Summary and Specifications

This general safet y information must be used by both the Logger operator and servicing personnel. Siemens Industry, Inc. assumes no liability for user’s f ailure to comply with these s afet y guidelines.

The MD-BMS and MD-BMED Power Meters are Over-Voltage Category III devices. Use approved rubber gloves wit h mechanical protection and goggles when operating these devices.

Conforms to UL Std 61010-1 and IEC61010-2-030

Certified to CSA Std C2 2.2 No. 61010 -1

Symbols on Equipment

WARNING

Qualified personnel must disconnect all high voltage wiring before using or servicing the meter.

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Introduction

Safety Summary and Specifications

Denotes caut ion.

Shock Hazard

(gloves and protect ive clothing) as required for the voltages being monitored.

Do not exceed 600 Volts

DEN

OTES HIGH VOLTAGE.

MD-BMS, MD

BMED hazardous voltages e

xist.

CAUTION

Equipment damage or loss of data may occur if you do not follow a procedure as specified. Using t his device in a manner for which it is not intended may impair its means of protection.

WARNING

Follow these steps in sequence when connecting the MD BMS and MD-BMED Power Meters to prevent a shock hazard:

● De-energize the circuit to be monitored.

● Connect the Curr ent Trans formers to the phases being monitored.

● Connect the volt age leads to the different phases. Use proper safety equipment

WARNING

This meter is equipped t o monitor loads up to 600V. Exceeding this voltage will cause damage to the meter and danger to the user. Always use a Pot ential Transformer (PT) for loads in excess of 600V. The MD-BMS and MD-BMED Power Meters are 600 Volt Over Voltage Category III devices.

WARNING

RISK OF ELECTRICAL SHOCK. LIFE THREATENING VOLTAGES MAY BE PRESENT. QUALIFIED PERSONNEL ONLY. As with any high voltage electrical system, it is imperat ive that proper personal protective equipment be worn before inspecting or servicing electrical equipment . Before inspecting or servicing installed power m et ers, read and follow the Medium Risk, NFPA Category 2 PPE requirements (see

PPE

Selection Tables).

NFPA 70E, Section 9.1, NFPA 70E

WARNING

There are no user-serviceable parts inside. Do not open the enclosure.

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Introduction

Safety Summary and Specifications

Sensor Limitations

NOTE:

PS Pulse output

WARNING

Use only shunted Current Transformers (CTs) . Do not use other CTs. Only use shunt ed CTs with a 333 mV maximum output. Serious shock hazard and logger damage can occur if unshunted CTs are used. The UL listing covers the use of the following Siemens CTs that are UL Recognized and have been evaluated to I EC 61010-1: SCT-HSC-0050-U (50A Mini), SCT-HMC-0100U (100A Midi), SCT-HMC-0200-U (200A Midi), SCT-RXX-A4-U (Rogowski Coil), SCT-SRS-xxx, SCT-SRL-xxx, and SCT-RGT12-xxx.

Equipment protected throughout by double insulation (I EC 536 Class II).

CAUTION

30V maximum open voltage, 5 mA maximum current.

FCC COMPLIANCE These devices have been tested and found to comply with the limits for a Class A

digital device, purs uant to part 15 of the FCC Rules. These limits are designed t o provide reasonable protection against harmful int erference when the equipment is operated in a commercial environment. This equipment generates, uses , and can radiate radio frequency energy and, if not installed and used in ac cordance with the instruction manual, may cause harmful interference to radio communicat ions. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at user’s own expense. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this devic e must accept any interference rec eived, including interference that may cause undesired operation.

Sommaire des informations de sécurité

Ces informations de sécurité sont destinées à être utilisées à la fois par l'opérat eur de l'enregistreur et le personnel de service. Siemens Industry, Inc. n'assume aucune responsabilité en cas non-respect des directives en matière de sécurit é par l’utilisateur.

The MD Power Meter est un appareil protégé contre les surt ensions de catégorie III.

Conforme à UL Std 61010-1 IEC 6106-2-030

Certifié CSA Std C22.2 No. 61010-1

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Introduction

Safety Summary and Sp

ecifications

Signifie prudence.

Indique une haute t ension.

Ce compteur peut contenir des tensions pouv

ant mettre en danger la vie des

Ne pas utiliser cet appareil à des fins autres que celles indiquées.

Risque d’électrocution

Ne pas dépasser 600 V.

Symboles sur l’appareil

CAUTION

Le dommage d'équipement ou la pert e de données peuvent se produire si vous ne suivez pas de procédure comme spécifié.

WARNING

Risque de choc électrique. Des tensions mettant en danger la vie des personnes peuvent être présentes. Personnel qualifié uniquement.

CAUTION

personnes. Un personnel doit débrancher les câbles de haute tension avant d’utiliser ou de

dépanner le compteur.

WARNING

Tout autre utilisat ion peut annuler ses moyens de protect ion.

WARNING

Pour raccorder un M D Model Power Meter à une prise de courant alternat if, suivez cette séquence pour em pêcher tout risque l’électrocution.

● Mettez hors tension le cir cuit à surveiller.

● Connect ez le transformateur de cour ant aux phases à surveiller.

● Connect ez les fils de tension aux différent es phases. Utiliser des équipement s de

protection (gant s et des vêtements de protection) nécessaires pour les tensions surveillées.

WARNING

Ce compteur peut contrôler des charges jusqu'à 600 V. Le dépassement de cette tension peut endommager le c ompteur et mettre l'utilisateur en danger . Veuillez toujours utiliser un transformateur de tension pour des charges supérieures à 600 V. Le MD Power Meter est un appareil à 600 V avec protection contre les surtens ions de catégorie III.

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Introduction

Safety Summary and Specifications

INDIQUE HAUTE TENSION.

MD-BMS, MD

BMED tension dangereuse exist ent.

Limites du détect eur

Équipement protégé par double is olation (IEC 536 Classe II)

Impulsion de sortie PS

DANGER

RISQUE DE CHOC ÉLECTRIQUE. HAUTES TENSIONS PEUVENT ÊTRE PRÉSENTES QUI METTENT LA VIE EN DANGER. PERSONNEL QUALIFIÉ UNIQUEMENT.

Comme avec tout sy stème électrique haute tension, il est impératif que le personnel porte des protections adéquates avant d'inspect er ou de dépanner des équipements électriques. Av ant d'inspecter ou de dépanner les wattmèt res, veuillez lire et suivre les exigences de la norme NFPA Catégorie 2 PPE, risque moyen (voir les tables de sélection NFPA 70E, Section 9.1, NFPA 70E PPE).

DANGER

Il n’y a acune pièce réparaable par l’utilisateur n’ouvrez pas le boîtier.

WARNING

N’utilisez que des trans formateurs de tension shunt és. Ne pas utiliser d’autres transformateurs de tension. N’utilisez que des

transformateurs de tension shuntés d’une puissanc e maximale 333 mV. De sérieux risques d’électrocution et des dommages à l'enregistreur peuvent se produire si des transformateurs de tensions non shunt és sont utilisés. La certification UL couvre l’utilisation des t ransformateurs de tension de Siemens agréés UL et évalués sous IEC 61010-1 suivants :

SCT‐HSC‐0050‐U, SCT‐HMC‐0100‐U, SCT‐HMC‐0200‐U, andSCT-RXX-A4-U.

CAUTION

Tension ouverte de 30 V maximum, courant maximum de 5 mA.

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Introduction

Safety Summary and Specifications

MD-BMS and MD-BMED Technical Specifications

Specification Description

Service Ty pes Single Phase, Three Phase-Four Wire (WYE), Three Phase-Three Wire

(Delta)

3 Voltage Channels 80 to 346 Vol ts AC Line- to-Neutral, 600V Li ne-to-Li ne, CAT III

Current Channels 3 channels, 0.5 25 Vac maximum, 333 mV CTs to maintain accuracy.

Measur e u p t o 4000 Amps depending on the curre nt transduc er.

Maximum Current Input 158% of current transducer rating (mV CTs) to maintain accuracy.

Measure up to 4000 Amps for Rogowski Coil CTs.

Measurement Type True RMS using high-speed digital signal processing (DSP)

Line Frequ enc y 50/60 Hz

Power From L1 Phase to L2 Phase. 80 to 6 00 Vac CAT III 50/60 Hz

90 mA maximum. N on-user replaceable 0.5 Amp internal fuse protection.

Waveform Sampling 12 kHz for voltage or current

Parameter Update Rate 0.5 seconds

Measurements Volts, Amps, kW, kWh, kVA, kVAR, kVARh, kVAh, Apparent Power

Accuracy Rated to ANSI C12-20-2010 Class 0.2. Better than 0.2% (<0.1% typical)

Resolution 0.01 Amp, 0.1 Volt, 0.01 watt, 0.01 VAR, 0.01 VA, 0.01 Power Factor

LED Indicators Bi-color LEDs (r ed and green): 1 LED t o indicate communication, 3 LEDs

Pulse Output Open Collector , 5 mA maximum current, 30V maximum open voltage,

Direct RS845: BAC net MS/TP protocol (default) or Modbus RTU

Maximum Distance Communication Length

Factor (aPF), Displacement Power Fact or (dPF). All parameters for each phase and for system total.

for V, A, kW, kVAR, kVA, and PF, excluding sensor.

depending on scalar setting.

for correct phasing: Green when voltage and current a re on the same phase; Red when incorrectly wired. Pulse output LED.

optically isolated.

Communication

Ethernet: BACnet IP protocol (default) or Modbus TCP (MD-BMED only)

RS845: 12 00 meters wi th data rang e of 100K bits/second of les s . Ethernet: <30 meters for CAT5 cable; use 600V rated cable ( indoor wiring only ).

Baud Rate BA Cnet: 960 0, 19200, 38400, 76800 ( default)

Data Bits 8

Parity None, Even, Odd

Stop Bit 2, 1

14 Building Technologies 125-202

Modbus: 9600 (default), 19 200, 38400, 57600 , 76800, 11 52 00

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Maintenance

Communication

Introduction

RS 485 Transceiver unit load size Loading

Data Formats BACnet Master S lave/Token Passing (MS/TP) protocol (default) or

Operating Temperature -20°F to 140°F (-7°C to 60°C)

Humidity 5% to 95% non-c o nd ensing

Enclos ure ABS plastic, 94-V0 flammability rating

Weight 12 ounces (340 g), exclusiv e of CTs

Dimensions 9.5” × 3. 3” × 1.6” (24.2 × 8.5 × 4.0 cm)

Ingress Protection IP 20

Mounting Rail Compatible with a TS35/7 DIN Ra il Channel

Digital Display An optional 2 × 16 character display which auto-cycles between

1/8 Load unit

Modbus RTU protocol. The MD-BMED Mod el adds Ethernet with BACnet IP or Modbus TCP.

Mechanical

Accessories

informational screens every 2-3 seconds, with real-time values updated every second.

ViewPoint Minimum System Requirements

Operating System Windows® 7(32 or 64 bit), Win dows® 8 Pr o, Vista (32 or 64 bit), XP,

Windows® 10 (32 or 64 bit).

Communications Port One USB port and Type AB cable

Hard Drive 50 MB minimum avai lable

Process or Pentium Class 1 GHz or more recommended

Safety

Regulatory Agencies UL Listed to UL Standard 61010-1

● IEC 61010-2-030

● cUL certified to CAN/CSA Standard

● C22.2 No. 61010-1

● Certified to CSA Std. C22. 2, No. 61010-1

FCC Part 15, Class B RCM (formerly C-Tick) RoHS Compliant WEEE Compliant BACnet Testing Labs certified smart sensor (B-SS) device

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Introduction

Maintenance

Do not use cleaning agents of any kind (including water

) on the MD

BMS or MD

Maintenance

There is no requir ed maintenance with the MD-BMS or MD-BMED Power Met ers

CAUTION

BMED Power Meters.

Only accessories specified in Siemens product lit erature or price sheets are approved for use with MD-BMS or MD-BMED Power Meters.

If the logger appears dam aged or defective:

1. Disconnect all power and s ensors.

2. Contact Technical Support for assistance. Siemens Industry, Inc.

1000 Deerfield Parkway Buffalo Grove, IL 60089 800-877-7545 (Dial 2)

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Where to Obtai

n ViewPoint Software

Prepping for Installation

The Siemens MD

BMS and MD

BMED metering kits are provided with a meter and

NOTE:

three current tr ansformers with the met er factory-configured for t he ordered CTs. No additional setup in the f ield should be required when using the MD- BMS and MDBMED metering kits. If the meters and current transformers are ordered individually, field configuration is required.

The MD-BMS and MD-BMED Metering Kits are ordered with specific CTs and communication opt ions defined. These kits enable the meters to be factory-configured to these order options, reducing the need to configure the meters using the ViewPoint service soft ware. The following ViewPoint guidelines are provided to support t he unusual case where the meter application parameters must be changed. Communication configuration must be set up in the ViewPoint software even if you use a separate logger to record data. The more tasks completed before installat ion means less time in the field.

These determinations figure into how you set up the MD-BMS and MD-BMED meters for operation:

● BACnet (default) versus Modbus Set the network address switches on the meter to either Modbus or BACnet.

● RS-485 (default) versus Ethernet The type of connection is part of the configuration set up in the ViewPoint software.

● Laptop/ personal computer for setup verification through the USB using ViewPoint service soft ware.

This is a convenient met hod for setup before going in the field, and once in the field, to easily read real-time values.

Prepping for Installation

Installation of the ViewPoint software and a communication cable should be completed and tested with a meter prior to the field installation. A USB-type AB cable can be used when configuring the meter in this manner.

Where to Obtain ViewPoint Software

A flash drive, with ViewPoint software, accompanies most orders. This soft ware can be downloaded for use with the Siemens MD Series Power Met ers. The download site is: http://www. dentinstruments.com/Siemens

The link for the ViewPoint software download is located at the bottom of the page.

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Installing the ViewPoint Software

NOTE:

Installing the ViewPoint Software

The ViewPoint software is designed to let you easily configure the MD-BMS and MDBMED power meters for different current transformers, check readings, and verify correct setup. All of Siemens MD-BMS and MD-BMED meters use ViewPoint software to communicate with the meters; it must be installed on any computer talking to the MD-BMS and MD-BME D meters. ViewPoint is compatible with Windows® 7 (32- or 64 bit), Windows® 8 Pro, Vista (32- or 64-bit), or XP.

The ViewPoint software may be installed on multiple computers. To obtain free ViewPoint software, download from the following site:

Web Link: www.dent instruments.com/siem ens User Name: siemens Password: mdpowermeter

Locate the ViewPointInstaller.exe progr am. Start the installer by double-clicking ViewPointI nstaller.exe.

When ViewPoint st arts up, the Communication screen displays. This is where the software networking parameters are entered t o match the MD-B MS and MD-BMED networking configuration (meter type, COM port, baud rate, base address, and so on). ViewPoint remembers your last connection and displays those previous select ions when opening the software onc e again.

ViewPoint soft ware serves several functions, such as: setting up a meter, getting realtime values, and read/write registers and objects. But, for the purpose of prepping for field installation, only three are important to the process: Communications, Meter Setup, and Comms Setup. The other functions are described later in this document.

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Connecting a Communication Cable

MD-BMS and MD

BMED meters are ordered from Siemens based on the type of

NOTE:

There are various ways to communicate with an MD-BMS or MD-BMED meter; and your choice will determine what type of cabling system to use. To set up the meter, communication can be established with a USB cable, an RS-485 adapter, or an Ethernet cable (MD-BMED only). Once in the field, communication between an MDBMS or MD-BMED meter and a logger is established with an RS-485 or an Ethernet connection. An RS -485 connection is limited in speed, while an Et hernet connection is much faster.

desired communication connection.

Connecting and Communicating using a USB Connection

The preferred method of communicating with the MD series power m eters is through a computer to USB connec tion on the power meter. A type "AB" USB cable m ay be used between a personal comput er and an MD Series Power Meter, and is the pr eferred method for sett ing up an MD Series Power Meter with BACnet (default) or Modbus protocols. T he USB cable will als o power the meter when connected to a personal computer. When using a US B cable with a personal computer, each USB port on the computer generates a unique Comm port in the ViewPoint software, such as Com3 or Com4.

Prepping for Installation

A USB driver is installed when you ins tall the ViewPoint soft ware.

Figure 1: USB Type AB Cable.

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Connecting a Communication Cable

If an RS

485 Adapter is u

sed instead of a USB, an RS

485 Driver must be installed

ViewPoint can read information through a USB, an RS-485 isolated COM port, or an Ethernet connection (MD-BMED only). When the RS-485 connection is selected, a base address is required ( the base address is the rot ary switch settings). Address switches are ignor ed by both USB and Ethernet. When the Ethernet connection is selected, an IP address is required. The screen display changes based on your connection selection.

The USB connector on the MD-BMS or MD-BMED power meters can be used to power the unit when configuring it using ViewPoint and either BACnet or Modbus protocols.

Secondary Option: Communicating with MD Series Meters using and RS-485 Adapter

If connecting with a USB cable is not practical, an RS-485 to USB adapter connec ted to your computer may be used for communicating wit h your MD-BMS or MD-BMED Power Meter. First, install the driver on the com puter, and then complete the connection between the meter and the computer by plugging the RS 485 connector into the meter.

on your computer and power applied to the MD-BMS or MD-BMED meter befor e the software will function properly.

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Connecting a Communication Cable

NOTE:

Installing the RS-485 Adapter to a Computer

If ViewPoint was installed first, it m be restarted following an RS- 485 Driver installation. I f an RS-485 port does not appear in the drop–down list, the RS-485 was not installed correc tly.

1. Insert one end of a USB cable into the RS-485 adapter and the other end into a USB port on the computer.

2. Insert the CD that came with the RS-485 adapter into your computer.

3. The Found New Hardware Wizard window displays.

4. Select Install the software automatically and click Next.

5. Click Finish when the installation is complete.

6. Remove the CD from y our computer.

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Connecting a Communication Cable

Connecting the Adapter to the Meter

To complete the connec tion between the MD Model Power Met er and the computer, the three wires coming from the RS-485 adapter are plugged into the meter.

● I nsert each whit e f errule into the appropriate slots on the connector:

● The red wire inserts in (+)

● The black wire to (-)

● The green wire in GND

Figure 2: RS_485-Adapter

● Verify that the DIP switches on t he back of the RS-485 Adapter are set to RS-485, Echo Off, 2 Wire, 2 Wire as shown below bef ore plugging into the adapter into the MD-BMS and MD-BMED.

Figure 3: DIP Switches on Back of RS-485 Adapter

The adapter is ready to be connected to the MD-BMS or MD-BMED Power Meter.

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NOTE 1:

Figure 4: RS-485 Connector on MD-BMED Power Meter (RS-485 Connector at Left).

The USB is always active on the MD Series meters (and the protocol is Modbus over the USB virtual communications port). NOTE 2: If ViewPoint was installed first, it must be restarted following an RS-485 Driver installation. I f an RS-485 port does not appear in the drop-down list, the RS-485 was not installed correc tly.

1. Select USB/RS-485 (MSTP) as your communication type.

2. Select PS/3037.

3. When connecting with an RS-485, enter a base address that matches the switches on the MD-BMS or MD-BMED meter. A USB connection ignores address s witches. See

Setting the Network Address Switches

4. When connecting with an RS-485, select BACnet (default) or Modbus as your

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communication protocol. When communicating over USB, whether the MD series

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Connecting a Communication Cable

NOTE:

meter is configured f or Modbus or BACnet mode, the MD series met er will communicate over the Modbus protocol.

5. Select the PC COM Port from the drop-down list. For a USB connection, select COMxx USB in the field, wherexx is the port number. For an RS-485 connection using an RS-485 adapter, select COMxx RS-485 Isolated Port (COMxx), where

is the COM port number.

Default settings are used for the two remaining f ields: Data Bits is 8N1 and the Baud Rate is 9600. When BACnet is selected as your protocol, an additional read-only field displays the BACnet Device ID.

Setting the Network Address Switches

There are two rotary network address switches on a serial MD-BMS and MD-BMED Power Meter, labeled MSB and LSB. These two switches are used to select the BACnet/Modbus address the client uses to communicate with the MD-BMS and MDBMED Power Meters.

The rotary switches are 16-position, hexadecimal swit ches. The default factory setting is hex 01. The address is a hexadecimal (hex) value, represented by the digits 0 through 9, and lett ers A through F. For example, a network address of 100 in decimal is converted to 64 hexadecimal and set on the MD-BMS and MD-B MED by:

● MSB switch—select 6

● LSB switch—select 4

In some cases, the hex value m ay need to be converted to decimal when entered into the RTU or data logger. See Appendix G for a hexadecimal conversion table.

The BACnet MS/TP MAC and Modbus address is a decimal value, represented by three digits: 000 through 009, 010 through 090, and 100 t hrough 999.

BACnet MS/TP masters only support addresses 001 through 127.

Table 2: BACnet Hexadecim al Address Availability.

Hexadecimal

Address

00 Reserved for resett ing the MD-BMS and MD-B MED to Modbus mode with 9 600

baud, 8 bit, 1 stop bit and no parity.

01-7F Available (01/001 is the factory default setting).

80-FE Reserved for BACnet slave devices.

FF The rotary switches can be used to configure the communication protocol to BACnet

or Modbus as well as changing the baud rate if unsure of the current settings (MD SERIES METERS only).

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BACnet Address Availability

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Connecting a Communication Cable

NOTE:

Table 3: Modbus Hexadecimal Address Availability.

Hexadecimal

Address

00 Reserved for r esetting the MD-BMS and MD-BMED to Modbus mode with 9600

baud, 8 bit, 1 stop bit and no parity.

01-F7 Available for Modbus slave devices.

FF Reserved for network wide broadcast.

Modbus Address Availability.

Communication Error

If ViewPoint cannot communicate with the MD-BMS or MD-BMED Power Meter, the Status window display s the following message in the Stat us field:

Unable to establish connection with meter, please check settings and try again.

Try the following to resolve the communication error on a serial MD-BMS or MD-BMED Power Meter:

● No RS-485 option available in the PC COM Port drop- down list – Either the meter is not properly connected, or the required software driver is not installed.

● Modbus Base Addr ess Switch does not match the selected hex switch sett ings on the MD-BMS and MD-BMED – Change the switch settings.

● The selected Baud Rate does not match t he MD-BMS and MD-BMED baud rat e – Change the baud rate.

For more information, see

Appendix I Troubleshooting Communication Issues

Connecting and Communic ating Using an Ethernet (TCP/IP) Connection (MD-BMED Only)

Connect one end of t he Ethernet cable into the MD-BMED Power Meter, and the other end into your computer or network. To begin communicating using an Ethernet cable, you must first set it up within the ViewPoint software that came with the meter. See

Ethernet (TCP/IP) Connection

The Ethernet cable must also be rated for 600V capability when wired to a power meter inside an industrial control cabinet or electrical panel.

It is recommended to use Belden® DataTuff® TC Cat 5e cord sets with UL 1277 Listed, Type TC 600V Industrial Ethernet Cable. See

The meter will require power to communicate over Et hernet. Power can be supplied by connecting the USB or volt age lines L1 and L2.

in the

Communicating with a MD-BMED Meter section

Belden Product Bulletin PB372

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Connecting a Communication Cable

NOTE:

Keep in mind that the Et hernet connection must have an IP address in the V iewPoint software that can either be set manually within t he software with the Use Static IP Address option (for a fixed address) or obtained automatically from the router connected to the logger using the Use DHCP option (dynamic address). Both options have advantages, see

About IP Addresses

When Ethernet is connected, any RS-485 connection is deactivated. To activate the RS-485 interface, the MD-BMS or MD-BMED Power Meters must be power cycled with the Ethernet cable r emoved.

1. Select Ethernet (TCP/IP) to gather information using a network connection. When selected, the Communications Setup screen changes, and an IP address is required as address swit ches are ignored.

2. Select your mode of communication.

3. Do one of the following:

● Enter the IP address for t he Ethernet connection of the met er or select one of the previously used addresses from the drop-down list. See

● Use the Scan Network or Setup buttons to acquire a new IP address. See

Addresses

About IP Addresses

About IP

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NOTE:

● Enter the Port connec ted to the MD-BMED. A check box is available to mak e the port the default . Different networks may requir e different ports. See your net work administrator.

About IP Addresses

The Ethernet connection must have an IP address that is manually set in the IP Address: field or obtained automatically from the router connected to the met er using the Use DHCP option (dynamic address) found in t he Logger Network Setup dialog box accessed by using t he Setup button. Both options have advantages.

A Static IP address of 192.168.1.10 is assigned in the factory to all Ethernet MDBMEDs.

● Static Connection: If you know an IP address that is not being used by another device on the network, enter that address int o the IP Address: field. This may require permission from a network administrat or. With a static IP address, it is easy to connect to the meter since there is no doubt about which IP address to use.

● Dynamic Connection: If you want t he router t o assign an IP address to the met er automatically, select Use DHCP. This may avoid the need for a network administrator as the router will assign an IP address that does not conflict wit h any other devices on the network. A disadvantage of the DHCP option is that the “lease” of the IP addr ess may expire after a period of time and the router could assign a different IP address. A new IP address means that ViewPoint cannot connect to the meter until the new IP address has been enter ed. See below.

An additional option is to set the meter to DHCP, then go to the router and assign a specific IP address to the MAC address that corresponds to the meter. In this way, if the lease does expire, the router will always ass ign the same IP number back to the meter. This opt ion may also require a network administrator.

The Scan Network button scans the network for possible meters and displays them in the Logger Selection dialog box. Look for the serial number on the meter (found on the back of the meter) to determine which connection point is yours.

Figure 5: Logger Selection Screen.

● Select the correct device from the list of IP Addresses and clic k OK.

The Set up button displays the Logger Network Setup dialog box where network address information is entered. See your network administrator before making changes.

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Communications LEDs

NOTE:

When you select the Use DHCP check box, the Dynamic Host Configuration Protocol is used to automatically populate the IP Address, Subnet Mask, and Gateway Address fields.

Each meter connected to the network requires its own unique network IP addr ess. An address is provided aut omatically if the network allows DHCP (Dynamic Host Configuration Protocol), and the meter is configured to request an addres s.

● Click Update Logger aft er making your selections. ViewPoint displays t he following message when the connection is s ucc essful:

Communications LEDs

The MD-BMS and MD-BMED COM LEDs signal the following communication information:

Table 4: MD Series Met ers Serial COM LED Signals.

BACn et Mo dbus Description

Steady Green Steady Green Power is applied to the meter.

Flashing Green Flashing Green The met er is communicating.

N/A Steady Red Communications failure, or talking

N/A Flashing Red The met er is receiving

Table 5: MD-BMED Ethernet COM LED Signals.

BACnet/Modbus Description

Steady Green Power is applie d to the meter.

Flashing Green The meter is communicating.

with BACnet while the meter is in Modbus mo de.

communic ation on t he bus for a meter at another address.

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Versi

on Control

Version Control

Installed versions of the software and firm ware are checked when first connect ing the meter. A pop-up dialog box appears if either of those is out of date. See

ViewPoint Soft ware

Meter Setup

Once communicat ion is established between the computer and t he MD-BMS or MD BMED Power Meter, you are now ready to configure the meter for the field. This is accomplished in the Meter Set up tab of ViewPoint.

Prepping for Installation

Installing the

for firmware downloading instructions.

Use Type AB USB Cable from Meter to Computer.

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Meter Setup

NOTE:

The Meter Setup screen allows unique changes to an element on t he meter. Within the element, CT Phase, Type, Amps, and Phase Shift are entered, based on wiring connection, for CT1, CT2, and CT3. The type of wiring connection and the Digital Output are also entered for the element. Overall, a Demand Window of 1 to 60 minutes is available for the rec ording of values and a Line Frequency of 50 Hz or 60 Hz is selectable.

In MD-BMS and MD-BMED meters, Peak Demand is calculated using a moving window and is averaged across the selected demand window size. Each minute the total consumpt ion is recalculated and compared to the last demand window. If the new window is larger than the last recorded value it is recorded. T his value is calculated during the sam pling of the waveform.

The Met er Setup screen is blank when first accessed. Click Ret rieve Meter Setup to view the current status of the element. The Element Status dialog box displays while the element is read.

Entering Wiring Information for an Element

Begin setup by entering an am ount of time (1 to 60 minutes) into the Demand Window and selecting a Line Frequency from the drop-down list.

Use the following steps within an element:

● Select WYE, DELTA, or Single Phase as the wiring connection.

Siemens Industry, Inc. recommends using three CTs in a WYE connection for Delta loads.

A WYE connection aut omatically displays all three CTs. Any changes made to CT1 also apply to CT2 and CT3.

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Meter Setup

A DELTA connection displays only the two available CTs. Any changes made to CT1 also apply to CT3.

● Dependin g on the wiring connection, make changes to CT1, CT2, and/ or CT3.

● CT Phase—Shows the voltage of t he referenced CT.

● CT Type—Use the drop-down list t o select the type of CT attached t o the MD- BMS

or MD-BMED Power Meter.

● CT Amps—Enter the amperage rating.

● CT Phase Shift—Enter (in degrees) t he phase shift of the CT. The default is 1.1.

Table 6: Current Transformers Setup Criteria.

CT Style Part Nu mb er CT Rated

Amps

Hinged Mi ni SC T- HSC -0050- U 50 0.75° Scalar 1 Scalar 2 0.5%

Hinged Mi di SCT-H MC-010 0-U 100 0.12° Scalar 2 Scalar 2 0.3%

SCT-HMC-0200-U 200 0.30° 1%

Split Core Small SCT-SCS-0050 50 2.20° Scalar 1 Scalar 2 1%

SCT-SCS-0100 100 Scalar 2

Split Core Medium SCT-SCM-0100 100 1.75° Scalar 2 Scalar 2 1%

SCT-SCM-0200 200 1.50°

SCT-SCM-0400 400 1.30°

SCT-SCM-0600 600 Scalar 3

Split Core Large SCT-SCL-0600 600 0.00° Scalar 2 Scalar 3 1%

SCT-SCL-1000 1000 Scalar 3

Rogowski Coils SCT-R16-A4-U 4000 N/A Scalar 3 Scalar 3 1.2%

CT Phase Shift

Value

Recommended Data/Digital Scalar for

3-Phase Loads

230V 460V

Nominal CT

Accuracy

SCT-R24-A4-U

SCT-R36-A4-U

Revenue Grade Toroida l Solid Core

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SCT-RGT12-0005-U 5 0.00° Scalar 1 Scalar 2 0.2%

SCT-RGT12-0020-U 20 Scalar 1 Scalar 2

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Meter Setup

CT Style Part Nu mb er CT Rated

Revenue Grade Split Core

CT Phase Shift

Amps

SCT-RGT12-0050-U 50 Scalar 1 Scalar 2

SCT-RGT12-0100-U 100 Scalar 2

SCT-SRS-005-U 5 359.90° Scalar 1 Scalar 2 0.2%

SCT-SRS-050-U 50 359.77° Scalar 1 Scalar 2

SCT-SRL-100-U 100 0.06° Scalar 2

SCT-SRL-200-U 200 0.06° Scalar 2

SCT-SRL-400-U 400 359.94° Scalar 2

Value

Recommended Data/Digital Scalar for

3-Phase Loads

230V 460V

Nominal CT

Accuracy

1. Select a Digital Output from the drop-down list, if being used.

2. Select a Data/Digital Scalar from the drop-down list.

Selecting a Scalar

The use of Modbus prot ocols limits the data registers to a maximum of two bytes (16 bits) or a maximum decimal value of 65535. Modbus requires that the data be unsigned (positive) integer values. To overcome these limitations, some measured (and stored) values must be scaled to fit into the Modbus registers. The raw value read from the Modbus registers is multiplied by a scalar to convert the raw data. The following table lists the data scalars and the respective values f or the MD-BMS or MDBMED Power Meters:

Table 7: Data Scalars and Values for Registers 44001 through 44061.

Scalar Value

Data Scalar kW/kWh

Demand

0 .00001 .00001 .00001 .01 .01 .1

1 .001 .001 .001 .01 .1 .1

2 .01 .01 .01 .01 .1 .1

3 .1 .1 .1 .01 .1 .1

4 1 1 1 .01 1 1

5 10 10 10 .01 1 1

≥6 100 100 100 .01 1 1

kVAR/ kVARh kVA/kVAh Power Factor Amps Volts

The data scalar is stored in register 44602. When selecting a data scalar, consider the following guidelines:

● If the data sc alar selected is t oo low, an incorrect data result is returned from the register.

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Meter Setup

● If the data scalar select ed is t oo high, the significant digits following t he decimal point are removed.

After selecting a data scalar, the formula for calculating the actual value is:

Or, another way to state this formula is:

actual value/scalar value = register value

The following table is an example when selecting a data scalar for 3-phase loads based on the CT size or maximum current. These are the minimum recommended scalar settings:

Table 8: Data Scalar Selection.

CT Size or Max imum Current 3-Phase Loads

230 Volts 460 Volts

5 Scalar 1 Scalar 2

20 Scalar 1 Scalar 2

50 Scalar 1 Scalar 2

100 Scalar 2 Scalar 2

200 Scalar 2 Scalar 2

400 Scalar 2 Scalar 2

600 Scalar 2 Scalar 3

1000 Scalar 3 Scalar 3

4000 Scalar 3 Scalar 3

Examples Using a Data Scalar

The following examples use kW throughout. For example 1, the following data is used:

Volts x amps = watts 480 volts x 100 amps = 48,000 watts

Watts x 3 = system watts 48,000 watts x 3 = 144,000 watts (144kW)

Check the register’s value using the data sc alar 2 value of .01:

System kW/scalar value = register value 144kW/.01 = 14,400

Since 14,400 is less than 65,535, using data scalar 2 is a good choice for this example.

For example 2, the following data is used:

● 480 volts x 1000 amps = 480,000 watts

● 480,000 watts x 3 = 1,440,000 watts (1,440kW)

Check the register’s value using the data sc alar 1 value of .001:

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Meter Setup

NOTE:

1,440kW/.001 = 1,440,000 Since 1,440,000 is greater than 65,535, using data sc alar 1 ret urns an incorrect result.

Data scalar 1 is not an appropriat e choice. Reviewing this example using t he data scalar 3 value of .1 provides the f ollowing

result: 1,440kW/. 1 = 14,400 Since 14,400 is less than 65,535, using data scalar 3 is a good choice for this example.

Value s Re quiring Two Registers

Additionally, some values (for example, kilowatt hours) may cover a dynamic range that is larger than 65535 and require two Modbus registers. Any parameter in the Modbus Register Assignment tables that shows two registers (identified by the terms MSW (Most Significant Word) and LSW (Least Significant Word)) are examples of this wide-ranging paramet er.

To interpret the values contained in these registers, the steps are:

1. Multiply the MSW register by 65536.

2. Add the result to the value found in the corresponding LSW register.

3. Multiply the result by the appropriate scalar value from Table 8. For example, assume that System Total True Energy (kWh) is desired and the value of

5013 is read from regis ter 44001 (LSW), and 13 is read from register 44002 (MSW) and that the register 44602 data scalar is set to 3.

To calculate the total kWh recorded:

1. Multiply t he MSW by 65536: 13 x 65536 = 851968

2. Add the LSW: 851968 + 5013 = 856981

3. Multiply by t he scalar 3 value of 0.1: 856981 x 0.1 = 85698.1 kWh

When reading two regist er values, ViewPoint automatically calculates the tot al value.

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Comms Setup (Communications Setup)

Comms Setup (Communicat ions Setup)

Prepping for Installation

Use this tab to change communication parameters for the meter, such as communication protocols and how those communications are transferred. This screen displays the fields per tinent to your power connection and communic ation protocol, so if you are connected by RS-485 then only those fields are shown. However, if you are connected with a USB cable all fields are displayed. Changes to these fields override any settings on the Communications tab.

RS-485 Settings

Change the Data Bits or Baud Rate on the meter by using these fields.

BACnet Device Settings

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Connecting the Ports

Enter a new value into any field and click Send Setup to Meter to update the Device ID (meter identif ication), Max Master (number of units on network), or Max Info Frames (Number of packet s sent using MS/TP).

Ethernet Settings

Once your communication mode is selected, click Connect to establish a connection between the computer and the MD-BMS or MD-BMED meter.

● When the MD-BMS or MD-BME D meter is in the process of connecting to the computer, the Communication Status LED flashes briefly, followed by a solid green.

● If the MD- BMS or MD-BMED meter cannot connect to the computer, the Communication Status LED flashes red, and then returns to a solid green. Change the ViewPoint hardware settings and click Connect again.

ViewPoint fills t he Device Info f ields when the computer communicates with the meter. MD-BMS and MD-BME D meter installation can be verified using the ViewPoint

software. See

Using ViewPoint Software

further in this document for more information.

Establishing Communication Protocol

The MD-BMS and MD-BMED Power M eters communicate using the BA Cnet MS/TP or Modbus RTU prot ocols through the RS 485/Ethernet interface. To establish communication wit h a RS-485, the settings must meet the following requirements:

● The Modbus/BACnet address on the MD meter and in the ViewPoint software must be set to the same value.

● The MD-BMS and MD-BMED meter default serial parameters are:

Table 9: Serial Comm unication Settings.

Parameter Defaults Modbus Settings BACnet Settings

Baud (default) 9600 76800

Data bits 8 8

Parity None None

Stop Bit 1 1

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Establishing Communication Protocol

NOTE:

The supported baud rat es include 9600, 19200, 38400, 57600 (Modbus only), 76800, and 115200 (Modbus only).

The baud rate on the user interface (ViewPoint) must match the power meter setting. If these settings differ, the power meter cannot communicate. There ar e no baud rate settings when connected using Ethernet.

Switching Between BACnet and Modbus Mode

Changing Communication Mode Using ViewPoint

The MD-BMS and MD-BMED Power Meters are shipped with BACnet communications as the default protocol. It is recommended to use the Comms Setup tab in ViewPoint to change communications modes between BACnet and Modbus.

The baud rate and serial settings may need to change between Modbus and BACnet. Setting address s witches to 00 will set the unit in Modbus protocol, 9600 baud rate. If communication f ails, see

Address Switches (between BACnet and Modbus)

Changing Baud Rate or Communication Mode using

Changing the MD-BMS or MD-BMED from Modbus to BACnet Mode

1. Connect to the MD-BMS or MD-BMED using ViewPoint.

2. Go to theRead/Write Registers tab in ViewPoint.

3. Enter 44612 into theRegister field or click List to select from the Register Picker list.

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Establishing Communication Protocol

4. In the Value field, enter 1833 to change to BACnet mode.

5. Click OK. The status should read: Writing Value…

● Return to the Communications tab and Connect.

Changing the MD-BMS or MD-BMED Power Meter from BACnet to Mo db us Mode

1. Connect to the MD-BMS and MD-BMED using ViewPoint.

2. Go to theRead/Set Objects tab in ViewPoint.

3. Enter 10190 into theObject field or click List to select from the Object Picker list.

4. In the Value field, enter 375 to change to Modbus mode.

5. Click OK. The status should read: Writing Value…

● Return to the Communications tab and Connect.

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Establishing Communication Protocol

Changing Baud Rate or Communication Mod e Using Address Switches (Between Modbus and BACnet)

This procedure is only required if you are Changing Communication Mode using ViewPoint (between Modbus and BACnet) fails and the MD-BMS or MD-BMED Power Meter must be returned t o a particular communications protocol and baud rate.

1. Power down the MD-BMS or MD-BMED Power Meter (disconnect all voltage leads or the USB cable).

2. Set the rotary Address switches to F and F.

3. Power up the met er (connect the black and red voltage leads to power or connect the USB cable).

4. Set LSB to one of the following communication modes:

LSB Address Switch Comm unicatio n Mo de RS-4 85 LED COM LED

1 Modbus (Factory Default) Red On Off

2 BACnet Red On Red On

● Set MSB to one of the following baud rates:

MSB Address

Switch

1 9600 (Factory Default) Off Off Green

2 19200 Off Green Off

3 38400 Off Green Green

4 57600 (Modbus only) Green Off Off

5 76800 Green Off Green

6 11 52 00 (M od bus on ly ) Green Green Off

Baud Rate PhaseChek

LED CT1

PhaseChek

LED CT2

Phase Chek

LED CT3

After powering up the MD-BMS or the MD-BMED Power Meter, you will have 10 seconds to make changes. However, every time a rotary swit ch is changed, the 10second timer resets. After 10 seconds of no switch action, t he settings take effect, and the switches revert to the Modbus Address selector if in Modbus mode, or MAC address if in BACnet mode.

Fail-safe: If all address switches are 0, the meter is placed in Modbus mode at 9600 baud rate. Communication registers can be modif ied for baud rate and for mode.

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Mounting the MD

BMS and MD

BMED Power Meters

Remove the meter from all power sources before mounting.

Installa tion

Once the MD-BMS or MD-BMED Power Meter is set up for the desired communication method and protocol, it is ready to be installed.

WARNING

Mounting the MD-BMS and MD-BMED Power Met ers

The MD-BMS and MD-BMED Power M eters must be installed in an approved electric al panel or enclosure using proper installation practices according to the NEC and local electrical codes.

1. To mount the meter, use the two tabs provided at each end of the case or mount on a 35 mm Top Hat mounting DIN rail (EN 50022).

2. Securely mount the meter near a dedicated circuit disconnect breaker.

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Wiring Connections on the MD

BMS and MD

BMED Power Meters

NOTE:

High voltage may be present . Risk of electric shock. Life threat ening voltages may be

Wiring Connections on the MD-BMS and MD-BMED Power Meters

All wiring added must be rat ed for 600V CAT III applications.

WARNING

present. Qualified personnel only. Haute tension peut êt re présente. Risque de choc électrique. Tensions dangereuses

peuvent être présentes. Personnel qualifié uniquement.Consequences

The MD-BMS and MD-BMED Power Meters have the following wiring connections:

●

(Optional)

USB port for powering the meter and communicating during setup, a

three-wire connector for the RS-485 BACnet/ Modbus link, and an Ethernet port.

● Digital pulse output port. The port can be used to out put kWh, kVARh, or kVAh pulses to external dev ices, or to toggle on and off to control a remot e device or relay.

● Three CT inputs.

● F our voltage connect ions. Voltage leads are customer supplied. MD-BMS or MD-

BMED meters are self- powered from L1 and L2.

● A dedicated cir cuit breaker or fuses is recomm ended to be installed bet ween the mains voltages being measured and the red voltage inputs to the meter. See

Number 567-090-01, F use Module

as an acceptable solution.

Part

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Completing the Installation

Figure 6: Power Meter Connections.

Completing the Installation

Follow these steps to complete the field installation of your MD-BM or MD-BMED Power Meter:

● Connect whatever communications cable you are using t o the building net work. Recommendation: Use Belden® DataTuff® TC Cat 5e cord sets with UL 1277 Listed,

Type TC 600V Industrial Ethernet Cable. See

1. Connect your pulse output, if used. The port can be used to output kWh, kVARh, or kVAh pulses to external devices, or to toggle on and off to control a remote device or relay. See

2. Connect the CT s. See

3. Connect the voltage and power the meter. See

Using the Pulse Output Port Function

Wiring CTs

Belden Product Bullet in PB372

Connecting Voltage

Using the Digital Pulse Output Port Function

The Digital Pulse Output (see Figure 5) is used to generate pulses for external devices such as data loggers t hat can accept pulses, but do not have BACnet or Modbus capability. The MD-BMS or MD-BMED can generate pulses based on accumulated value(s) such as s yst em kWh, system kVARh, and system kVAh. When a pulse is generated by the meter, the pulse LED will briefly flash; otherwise, it will remain dark .

When in Modbus, the pulse output is scaled by the Modbus data scalar register 44602. When in BACnet, the puls e output is scaled by the CT Pulse Scalar object 12030. The pulse scalar table is t he same as the Modbus data scalar table. For example, when the data scalar is set t o 3, each puls e will represent .1kWh, .1kVAh and .1kVARh.

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Using the Digital Pulse Output Port Function

Table 10: Pulse Scalar Values.

Data Scalar Pulse Scalar Value

kWh kVah kVARh

0 .00001 .00001 .00001

1 .001 .001 .001

2 .01 .01 .01

3 .1 .1 .1

4 1 1 1

5 10 10 10

≥6 100 100 100

For system pulse out put:

● kWh pulse output—write 44001 into the pulse output configuration object .

● kVAh pulse output—write 44011 into the pulse output configuration object.

● kVARh pulse output—write 44008 into the pulse output conf iguration object

Modbus Output Port Registers

Table 11: Modbus Digit al Por t Pulse Output.

Modbus Regis ter

44402 4401/5301 Port 1 output control when use d as an

45110 5109/ 5309 Digital P ort 1 Configuration

45111 5110/5310 Port 1 puls e output rel ay type 0 = Normally Open (HIGH)

Offset Register Name Detailed Description

0 = Output LOW (closed)

on/off—open/closed switch

Turns p ulses on/off

1 = Output HIGH (open) [default] Register 45110 mus t = 0 to use

0 = No pulses, Port may be used as an on/o ff— open/closed switch 44001 = System kWh pulses 44008 = System kVARh pulses 44011 = System kVAh pulses

1 = Normally Closed (LOW)

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Wiring CTs

BACnet Output Port Objects

Table 12: BACnet Digital P ort 1 Pulse Output.

Object Identifier Object Name Detailed Description

13020 Port 1 output control when us ed as an on/off—

open/closed switch

13100 Digital Port 1 Configur ation 0 = No pulses, Port may be used as an on/o ff—

13110 Port 1 Pulse Ou tput Relay Type 0 = Normally Open (HIGH)

0 = Output LOW (closed) 1 = Output HIGH (open) [default] Object 1 3100 present value must = 0 to use

open/closed switch 44001 = System kWh pulses 44008 = System kVARh pulses 44011 = System kVAh pulses

1 = Normally Closed (LOW)

Wiring CTs

1. Attach the CTs onto the green connectors labeled CT1, CT2, and CT3.

2. Place the CT s on the phase wires of the load to be monitored, and cor responding to the phase of the volt age leads. The CT labeled CT1 must be placed on the L1 phase voltage load wire, CT2 must be placed on the L2 voltage load wire, and CT3 must be placed on the L3 voltage load wire.

3. See

Checking Phases

, later in this section f or information about the CT LEDs and

how to verify the CT installation.

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Wiring CTs

The communication cable within electric panels and s witchgear should be jacketed,

Figure 7: Wiring Connect ions.

Completing the Wiring Connections - RS-485, Voltage Leads and CTs

1. Mechanically sec ure c ommunication cable where it enters electrical utility panel.

WARNING

shielded, twisted triad wire BELDEN 1121A. The jacket insulation rating must be 600V.

DO NOT connect the communication cable to field panel yet .

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Wiring CTs

At this time, DO NOT connect the communication cable to the communication trunk.

USE ONLY SHU

NTED CURRENT TRANSFORMERS (CTs). DO NOT USE 5A

WARNING

Doing so may damage communication devices or cause pers onal injury.

WARNING

SECONDARY CTs OR UNSHUNTED CTs. Do not use other CTs. Only use shunt ed CTs with a 333 mV maximum output.

Serious shock hazard and meter damage can occur if unshunted CTs are used. Only use Siemens Indust ry Inc‘s CTs that are UL listed/Recognized and have been evaluated to IEC61010- 1.

2. Remove the black RS-485 connector from the MD-BMS or MD-BMED Power Meter and wire the communication cable to the RS-485 connector. Connect positive (+), and negative (-) wires to the RS-485 connector using the daisy-chain method (see figure below). Keep lengt h of exposed wire to a minimum.

3. Connect the COMMON wire to the RS-485 connector (S) terminal (see figure below).

4. Tape back one of the c ommunication cable shields and connect the other shield to the Utility Panel Ground.

5. If the MD-BMS or MD-BMED is the last networked device, install the end of line terminator on t he positive (+) and negative (-) terminals.

6. Tape or shrink wrap all communication wire terminations and insulate any other exposed communication wiring. Ensure that insulat ion complies with local and National Electrical Codes.

7. Plug the term inal block back into the MD-BMS or MD-BMED Power Meter and mechanically secure the communication wire terminations to the power met er to prevent accidental removal.

Figure 8: Connecting and Insulating Communication Cable on MD-BMS or MD-BMED RS-485 Connector.

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Wiring CTs

Carefully insulate all com munication lines, including shield, to prevent accidental

To avoid personal injury or damage to RS

485 trunk devices, verif y no significant

NOTE:

WARNING

contact to high voltage conductors. After wiring t he communic ation cable, remove all scraps of wire or foil shield from

electrical utilit y panel.

8. Energize the MD-BMS or MD-BMED Power Meter. It is powered through the red power connector (see wir ing connections in Figure 3).

9. Verify pr oper power meter operation. For nor mal operation, the RS-485 LED blink s.

10. Close the electric equipment housing.

11. Using a voltmeter, check for high voltage. There should be no significant voltage (no more than 5V AC or DC) from either RS-485 leg to ground. If voltage is higher than 5V, check for incorrec t wiring.

WARNING

voltage (no more than 5V) exists on the network. The MD-BMS and MD-BMED Power Meters are designed to be located inside high voltage switchgear. They measure electrical use, and connect directly to the ser ial network.

12. Insert the CT wires into the green connector/s. See Figure 6.

Unused CT or Rogowski Coil input s must be shorted with a jumper wire if all three coils are not connected. An unconnected CT input may not show 200 current due to stray pickup and open input .

Connecting Split-Core Millivolt CTs to a Load

See

Connecting a Split-Cor e Current Transform er to a Load Installation Inst ructions

(129-555), and

Load Installation I nstructions

Connecting a Midi or Mini Hinged Split-Core Current Transformer to a

(129-556) for detailed instructions.

1. Open the CT by holding onto the removable leg and pulling it apart.

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Wiring CTs

2. Connect the CT around t he load conductor to be measured. Ensure that the maximum current of the conductor does not exceed t he maximum CT rating listed in the

Split Core Current T ransformers Small, Medium and Large Sizes Technical

Specification Sheet

(149-406).

3. Carefully reconnec t the removable leg while ensuring that the CT core alignment matches. The conductor should be in the inside of the CT window.

4. Repeat Steps 1 through 3 if you are using more than one CT.

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Wiring CTs

NOTE:

1. Connect the white wire on the CT to the positive terminal on the measuring device.

2. Connect the black wire on the CT to the negative terminal on the measuring device.

Correct orientation of a CT is required to ensure proper measurement. If an arrow is shown on the CT label, it should be pointed toward the load. Otherwise, use the instructions pr inted on the CT.

Connecting Rogowski Coil CTs to a Load

To install a Rogowski Coil CT to the conductor(s):

See

Connecting a Rogowski Coil F lexible Current Trans former to a Load Installation

Instruct ions

(129-554) for detailed instructions.

1. Open the CT by squeezing t he connector latch and pulling it apart.

2. Connect the CT around the load conductor to be measured. Orient the CT so that the arrow on the CT case points towards the load. Ensure the max imum current of the conductor does not exceed 5,000 amps.

3. Push the connector back together with the conductor within the loop of the CT.

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Installation

Connecting the V

oltage

The directionality for Rogowski Coil CTs is that the arrow points t

oward the load (for

4. Repeat Steps 1 through 3 if you are using more than one Rogowski Coil CT. To connect the CT's wires to the terminals on the MD-BMS or MD-BMED:

1. Connect the CT 's brown wire to the negative terminal on the connec t or.

2. Connect the CT's white wire to the positive terminal on the connector.

3. Connect the bare s hield wire from the Rogowski Coil to the “S” shield t erminal that is part of the connector. This reduces interf erence and improves the accurac y of the CT.

CT Wire Lead Polarity

Table 13: CT Polarity.

CT Type CT Lead + CT Lead -

Rogowski Coil* White Brown

Split Core mV White Black

* Rogowski Coils have a shield wire that must be connected t o the meter. This reduces interference and impr oves the accuracy of the CT.

example, motor) .

Connecting the Voltage

1. Connect the voltage leads (L1, L2, and L3, as necessary) to a circuit breaker. A voltage lead of 14 AWG THHN Minimum 600 Vac rating (or equivalent, t o maintain 600 Vac safety rating of the device) is required.

2. Connect the meter's L1, L2, and L3 leads to the circuit breaker or fuses.

3. See

Wiring Diagrams

during installation.

50 Building Technologies 125-202

for wiring connection spec ifics. Follow local electrical codes

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Installation

Connecting the Voltage

Verify that the br eaker is marked as

the disconnect breaker for the meter.

NOTE:

CAUTION

The MD-BMS and MD-BMED is rated for 600V Over-Voltage Category III. Cat III is for measurements per formed in the building. Examples are meas urements on distribution boards, circuit -breakers, wiring (including cables) , bus bars, junction boxes , switches, and socket outlet s in a fixed installation, and equipment for industrial use. Other equipment could include st ationary motors with a permanent connections to t he fixed installation.

Powering the Meter

Connect the MD-BMS or MD-BMED meter voltage leads as close as possible to a building installed, dedicated circuit disc onnect breaker using 14 AWG THHN Minimum 600 Vac wire rating (or equivalent, to maintain 600 Vac saf ety rating of the device). Mark the breaker as the disconnect for the MD-BMS or MD-BMED. See

Diagrams

Follow local electrical codes during the installation. MD-BMS or MD-BMED meters are self-powered from the L1 and L2 lines. W hen 80 to

600 Vac or DC is placed across the L1 and L2 wires, the three phasing LEDs begin t o flash in sequence.

for specifics of the wiring connections.

Wiring

MD-BMS or MD-BMED Single-Phase Connections

The MD-BMS or MD-BMED Power Meters can be used to monit or single-phase loads. There are several guidelines to keep in mind about this type of connection:

1. The MD-BMS or MD-BMED m et er is power ed f rom a potential between L1 and L2. This can be phase-t o-phase (230V) or phase-to-neutral (115V). With a singlephase 230V panel, the L1 and L2 volt age leads are connected between the L1 and L2 voltage sources. With a 115V circuit, the L1 voltage lead is connected to t he L1 (hot) lead, and t he L2 volt age lead is connected to neutral.

2. Each CT must be paired wit h the correct voltage sour ce. The current and voltage need to be in-phase for accurate measurements. For instance, CT 1 would monitor branch circuit supplied by voltage source L1, and so on.

3. The neutral m ust be connected because the MD-BMS or MD-B MED meter uses line-to-neutral measurements for all calculations.

Typical 230V Single-Phase Setup (US Wire Colors)

Connect the Black L1 voltage lead to Voltage L1, Red L2 volt age lead to L2 voltage, and White Neutral voltage lead to neutral. CT1 would monitor L1 loads and CT2 would monitor L2 loads. Based on the above guidelines, CT3 can be used if the Blue L3 voltage lead is connect ed to either L1 or L2. If voltage lead L3 and CT3 are in-phase, the MD-BMS or MD-BMED meter will provide correct kW readings. If the Blue L3 voltage lead was connect ed to the L2 voltage source, then CT3 could monitor any L2 branch circuit. Or, if the Blue L3 voltage lead was connected to the L1 voltage source, then CT3 could monitor any L1 branch circuit.

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Installation

MD-BMS and MD

BMED Power Meters Wiring Diagrams

NOTE:

DO NOT EXCEED 600 Vac PHASE

-TO-

PHASE CAT III.

Hazardous volt ages exist.

Typical 115V Single-Phase Panel Setup

Connect the Black L1 voltage lead to Voltage L1 (hot), Red L2 voltage lead to Neutral, and White N voltage lead t o Neutral. CT1 will monitor the L1 load. CT3 can be us ed if the Blue L3 voltage lead is c onnected to L1. CT3 could then monitor any L1 branch circuit.

System Values

System values are t he sum of L1 + L2 + L3 measurements. System values may not be meaningful since two different devices or loads can be monitored by a single MD-BMS or MD-BMED element.

When paired with the cor rect voltage phase, each CT provides individual kW/kWh readings for that CT channel.

MD-BMS and MD-BMED Power Meters Wiring Diagrams

The MD-BMS and MD-BMED Power Meters can be wired using any one of the following five common wiring setups. These diagrams will assist you in properly connecting your power meter for the setup desired.

All wire colors are U.S. Standard, and differ from Canadian standards . For Canadian installations, reverse the red and black wires (L1 = Red, L2 = Black).

WARNING

When complete, close the enclosure cover, if equipped.

WARNING

MD-BMS and MD-BMED Power Meters should only be wired by qualified personnel.

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MD-BMS and MD

BMED Power Meters Wiring Diagrams

Figure 9: Two-Wire, Single Phase.

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Installation

MD-BMS and MD

BMED Power Meters Wiring Diagrams

Figure 10: Three-Wire, Single Phase.

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Installation

MD-BMS and MD

BMED Power Meters Wiring Diagrams

Figure 11: Three-Wire Delta.

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Installation

MD-BMS and MD

-BMED Power Meters Wiring Diagrams

Figure 12: Four-Wire Wye.

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Checking Phases

NOTE:

The Phase LEDs are a unique feature of the MD-BMS and MD-BMED Power Meters that simplify installation by ensuring proper CT-to-phase installation and avoiding f ault y data collection. The meters automatically adjust for CT orientation—reducing setup time and nearly eliminating installation errors.

Verifying the MD-BM and MD-BMS Power Meter Setup Using the LEDs

The MD-BMS and MD-PMED Power M eters have three bi-color LEDs f or each element. These LEDs provide the following information:

● All LEDs are green — the syst em power fact or is greater than 0. 55 and the CTs are properly placed on the cor responding voltage phases.

● Any one LED is red — there is a phasing connection error.

● Two LEDs are red and one is green — two CTs are reversed.

● All three LEDs are red — all CTs are incor rectly connected.

Installation

If the tot al system power factor is less than 0.55, the LEDs are red even if connected properly. This situation is rare but can occur if, for example, the load to be monitored is a lightly loaded electric motor where it is common f or the power factor to be less than 0.55 and the corresponding LEDs will be red.

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Verifying Installation with ViewPoint Software

Password: mdpowermeter

The following table describes error conditions and t he appropriat e correction:

Table 14: LED Error Resolut ion.

CT1 CT2 CT3 Error Desc ription Correc t io n

Green Green Green Setup is correct and the system

power factor is greater than 0.55, or all CTs are disconnected.

Red Red Red All CTs are incorrectly connected,

-or-

the sys tem power factor is less than

0.55.

Green Red Red C T2 and CT3 are reversed. Switch the position of the CTs flashing

Red Red Green CT1 and CT2 are reversed. Switch th e position of the CTs flashing

Red Green Green CT1 is swapped with either CT2 or

CT3.

Green Red Gree n CT2 is swap ped with either CT1 or

CT3.

Green Green Red CT3 is swapped with either CT1 or

CT2.

Red Green Red C T1 and CT3 are reversed Switch the posit ion of the CTs flashing

Connect the CTs.

Rotate th e CT connections by one position by moving CT1 to CT2, CT2 to CT3, and C T3 to CT1, until all LED s are green. The system power factor is less than

0.55, but the CTs are connected properly indicating a light load.

red.

Switch CT1 with CT2, or switch CT1 with CT3.

Switch CT2 with CT1, or switch CT2 with CT3.

Switch CT3 with CT1, or switch CT3 with CT2.

red.

Verifying Installation with ViewPoint Software

In addition to verifying your connections with the LEDs, you can use the ViewPoint software to check connections. Any computer r unning the ViewPoint software, whether a laptop connected directly to the meter, a smart phone, or a personal computer connected to the network can bring up the software and learn information about the connection, the communication protocols, meter setup, real-time values, and firmware version.

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Verifying Installation with ViewPoint Softwa

Real-Time Values

Installation

Figure 13: Real Time Values Screen.

The R eal-Time Values screen shows current readings to verify that the system is configured properly. The tables display the real- time values of Volts, Amps, KW , KVA, KVAR, apparent power factor (aPF ), and displacement power factor (dPF) for Phase L1, Phase L2 and Phase L3. This screen also displays the current Data/Digital Scalar value used for each element, the CT Type connected to the MD-BMS or MD-BMED Power Meter, and the CT Value.

Do one of the following:

● Click Update to retrieve the values from the MD Model Power Meter.

● Select the Auto-Update check box to automatically update approximately ev ery 20

seconds.

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Verifying Installation with ViewPoint Software

Using R eal-Time Values to Verify Setup

Values displayed for Volts, Amps, KW, and so on, should make sense (the values in the table are relevant for the service being measur ed). This indicates t hat the power meter is set up correctly .

It may also be useful to use a handheld amp meter to test t he current and compare its readings to the values provided on the Real-Time Values screen.

Using the Optional Visual Display to Verify Real-Time Values

With the MD-BMED, you can read real-time values directly from the meter display. It has two rows of 16 characters along with a push button at one end of the unit t hat controls the display scroll mode. When the display but ton is held down for five seconds, the MD-BME D will swit ch between Auto Cycle mode (switches screens every two seconds) and Manual Cycle (the button must be pressed to switch screens). This change is saved to non-volatile memory.

In Auto Cycle mode, the informational screens change every two to three seconds, with real-tme v alues updated every second. The “display” button will stop the cycle until it is pressed again, or until 20 seconds is reached. Some inf ormation, such as protocol CT type, volts, amps, kW, Pf, and so on, is displayed during each c ycle. See

Appendix G

for complete cycle inf ormat ion.

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Verifying Installation with ViewPoint Software

Read/Write Registers – Read/Set Objects

Installation

The R ead/Write Regist ers, Read/Set Objects screen provides diagnostic and special configuration options , allowing the changing or viewing of the value of any MD-BMS or MD-BMED register or object. The tab name changes depending on which protocol (Modbus or BACnet) you are using; its use is not required for a basic setup.

● Do one of the following: – Enter a register/object address. See

Appendix A

and

Appendix B

for a list of

registers/objects and their descriptions..

– Click List to select a register/object from the Register/ Object Picker dialog box.

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Verifying In

stallation with ViewPoint Software

NOTE:

Use the Register/Object Picker dialog box to search for registers/objects by name. The selected value is entered on the Read/Write Registers —Read/Set Objects screen.

1. Click Read to see the current value.

2. Enter a new value in t he New Value field.

3. Click Write to change to the new value.

4. Click Clear Totals to clear accumulated data.

Accumulated data consists of registers/objects with a time reference, such as time since reset, kWh, demands, and so on.

Resetting BACnet Objects/Modbus Registers

Many of the MD-BMS or MD-BMED objects/registers are real-time values such as instantaneous watts or power factor. However, some objects are accumulated values such as kWh, kVARh, kVAh and various Peak Demand (kW) values.

To reset all BACnet acc umulated objects at once:

● Write to object identifier 10140 “Clear Accumulated Values” current value 1234.0. To reset all Modbus accumulated registers at once:

● Write to register 44066 “Clear Accumulated Measurements ” current value 1234. In ViewPoint, accumulating objects/regis ters can be reset using the Read/Set or

Read/Write tab.

● Click Clear Totals at the bot tom of the screen.

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Verifying Installation with ViewPoint Software

NOTE:

See the tables in

Appendix A

and

Appendix B

on the MD-BMS or MD-BMED Power Meters.

Firmware

for all of the objects/registers available

Firmware updates are available from DENT Instruments, contained in a Zip file that can be downloaded, unzipped, and installed using Vie wPoint 4.0 or later. The Firmware screen verifies the current f irmware version and updates the MD- BMED’s internal firmware. When not connected using a USB, updating firmware is only supported in Modbus mode.

If RS-485 communication is used, a baud rate of 9600 will download the f irmware to the unit in approximately six minutes. A faster baud rate can be selected to reduce the time by approximat ely 2.5 minutes. The baud rate is synchronized between ViewPoint and the MD-BMED meter by clic king the Connect button on the Communications tab.

Siemens Industry, Inc. recommends using 115,200 bps as the baud rate when downloading firmware updates using an RS-485. There are no baud rate settings when connected using USB or Ethernet.

The Met er Version Update Checking pop-up screen displays when a meter is connected if your firmware is out-of-date, and Automatic Checking is enabled. I f a new version is available, the version number of the latest release displays. Click the Download button on the pop-up screen to obtain the latest firmware from the DENT

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Verifying Installation with ViewPoint Software

NOTE:

web site. Once downloaded, return to the Firmware tab and use the Browse command button to selec t the file, and download the new version to the meter.

● Click Show Version to see which version of firmware is current ly loaded in the meter. If a later version of firmware is available, download it from the DENT Instrument s web sit e.

Once you have new firmware on your computer, ViewPoint will let you install that firmware for each meter of the same model that is connected without having to download it again. The f irmware is saved wherever your br owser saves files by default, or in a folder selected when downloading.

ViewPoint also checks for new versions of the ViewPoint applicat ion. When ViewPoint starts, it can automatically contact the DENT Instruments web site to get the latest versions available. I t only checks online when running for the first time, or if it has been seven days since t he last check. If there is a new version, the version number of the new release displays.

1. Click Browse to access the Select a Firmware Update File dialog box, and select the .hex file downloaded from the web site.

2. Do one of the following: – Click Check for Updates Online to automatically determine if the connected

meter has the latest version of the firm ware or software.

– Select the Don’t check online for firmware or ViewPoint updat es check box to

disable this feature.

3. Do one of the following: – Click Update to send the latest version to the meter.

– Click Cance l Update to stop the meter updating process.

If the baud rate was changed using an RS -485 for the firmware update, restore the baud rate to its original set ting.

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Appendices

Appendix A - MD-BMS and MD-BMED Power Meters BACnet Analog Value Objects

The MD-BMS and MD-BMED Power Meters support writable max_master and max_info_frames properties in the devic e object for MS/TP networks. For best network performance, the max_master should be set to the highest MS/TP MAC address on the network.

The max_info_frames does not need to be changed in most installations. The device ID proper ty of the BACnet device object is also writable. All device IDs on a

BACnet network must be unique. The Ethernet version can register as Foreign Devices to a BBMD (BACnet/IP

Broadcast Management Device). The address can also be written to BACnet object identifiers 14014 (BBMD IP Address LSW) and 14015 (BBMD IP Addr ess MSW).

NOTE: The LSW/MSW are in network order. For example: To set the BBMD server to 192.168.1.100 you would write: 43200 (0xA8C0) to BBMD IP address LSW object identifier 14014 and 25601 to (0x6401) to BBMD IP address MSW object identifier 14015 This sends the register as foreign device packet with a Time to Live (TTL) of 60000

seconds. To disable BBMD foreign device registration write 0 to both BBMD IP address LSW

(14014) and BBMD IP address MSW (14015) or simply write 0.0.0.0 to theBBMD field in the ViewPoint Comms Setup tab.

Editable Fields The Name, Location, and Description Notes fields are all editable with up to 32

characters. If the software you use to edit t he fields add characters to our input, you must include that count as part of your 32-character amount.

Absolute/Net Value Measurement Objects (System = Sum of Three Phases).

Object

Identifier

1000 kW Dem Syste m Max System Maximum Demand (peak demand) (Unsigned/Absolute)

1010 kW Dem System Now Avera ge Power (kW) for most recent dem and window ( Unsigned/Absolute)

1020 kW Dem Syste m Min Min Average Power Window (U nsigned/Absolute)

1030 kW System System true Power (kW). Unsigned absolute value of (k W L1) + (kW L2) +

1031 kW System Net System Power (kW) Signed net value of (kW L1) + (kW L2) + (kW L3)

1060 kW System Average Equals kWh System /(Time Since Reset /3600 seconds/Hr) (resettable)

1080 kW Avg Pos Equals kWh Syste m Positive/(Time Since Reset/3 600 seconds/Hr)

1090 kW Avg Neg Equals kWh System Negative/(Time Since Reset/3600 seconds/Hr)

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Name Description

(kW L3)

(resettable) (Signed Net)

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ue Objects

(resettab

le) (Signed Net)

Object

Identifier

1100 kW System Max System Highest Instantaneous Draw Since Reset (kW)

1110 kW System Maximum Positive System Highest Instantaneous Positive Draw Since Reset (kW) (Signed Net)

1120 kW System Maximum Negative System Highest Instantaneous Negative Draw Since Reset (kW)

1130 kW System Min System Lowest Instantaneous Draw Since Reset (kW, resettable)

1140 kW System Minimum Positive System Lowest Instantaneous Positive Draw Since Reset (kW, resettable)

1150 kW System Minimum Negative System Lowest Instantaneous Neg ative Draw Since Reset (kW, resettable)

1160 kW L1 Individual Phase True Power (kW) (Signed)

1190 kW L2 "

1220 kW L3 "

2000 kWh Sys Total System True Energy (kWh) (Unsig ned/Absolute)

2010 kWh System Total Positive System True Energy Positive (kWh) (Signed Net)

2020 kWh System Total Negative System True Energy Negative (kWh) (Signed Net)

Name Description

2021 kWh System Total Net System True Energy (kWh) Net

2040 kWh L1 Positive Individual Phase True Energy (kWh) (Signed)

2050 kWh L1 Negative "

2051 kWh L1 Net Individual Phase True Energy (kWh) (Net)

2070 kWh L2 Positive Individual Phase True Energy (kWh) (Signed)

2080 kWh L2 Negative Individual Phase True Energy (kWh) (Signed)

2081 kWh L2 Net Individual Phase True Energy (kWh) (Net)

2100 kWh L3 Positive Individual Phase True Energy (kWh) (Signed)

2110 kWh L3 Negative " Individual Phase True Energy (kWh) (Signed)

2111 1kWh L3 Ne t Individual Phase True Energy (kWh) (Net)

3000 Volts LL Av g Voltage Line to line Average

3010 Volts LN Avg Voltage Line to neutral Average

3020 Volts L1 L2 Individual Phase to Phase Voltages

3030 Volts L2 L3 "

3040 Volts L1 L3 "

3050 Volt s L1N Individual Phase to Neutral Voltages (V)

3060 Volt s L2N "

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Object

Identifier

3070 Volt s L3N "

4010 Amps Sys Avg Average of al l ph as es .

4020 Amps L1 Individual Phase Currents (A)

4030 Amps L2 "

4040 Amps L3 "

5000 kVAR Sys System Total Reactive Power (kVAR). Unsigned absolute value of (kVA R L1)

5001 kVAR Sys Net System Total Reactive Power (kVAR). Signed net value of (kVAR L1) +

5030 kVAR L1 Individual Phase Reactive Energy LSW (kVARh) (Signed)

5060 kVAR L2 "

5090 kVAR L3 "

5120 kVAR Dem System Max Sys tem Maximum Instantaneous kVAR De mand (kVA, resettable). It displays

Name Description

+ (kVAR L2) + (kVAR L3)

(kVAR L2) + (kVAR L3)

the defa ult value after a CAM unt il 1 demand window elapses. After a power cycle or CPU reset, th e v alue is not reset and does not update again until 1 demand w indow elapses. (Unsigned/Absolute)

5130 kVAR Dem SystemNow Average kVAR demand for most recent window (resettable). Displays the

6010 kVARh Net System System Total Reactive Energy (Unsigned/Absolute)

6020 kVARh System Total Positive System True Energy (kVARh) Positive (Signed Net)

6030 kVARh Sys Negative System Total Reactive Energy (Signed Net)

6050 k VA R h L1 Pos it iv e Individual Phase Reactive Energy (kVARh) (Signed)

6060 kVARh L1 N egative "

6080 k VA R h L2 Pos it iv e "

6090 kVARh L2 N egative "

6110 k VA R h L3 Pos it iv e "

6120 kVARh L3 N egative "

7000 kVAh System Total System Total Apparent Energy (Unsigned/Absolute)

7001 kVAh System Total Positive System Total Positive Apparent Energy (kVAh) (Signed Net).

7002 kVAh System Total Negative System Total Negative Apparent Energy (Sig ned Net)

default value after a CAM or reset, or power cycle. Updates every minute thereafter. True demand value takes a de mand period to get to actual value . (Unsigned/Absolute)

Accumu lates on ly when kW is positive.

7020 kVAh L1 Positive Individual Phase Apparent Energy LSW (kVAh) (Signe d)

7030 kVAh L1 Negative Individual Phase A pparent Energy (kVAh) Signed

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BMED Power Meters BACnet Analog Value Objects

Object

Identifier

7050 kVAh L2 Positive "

7060 kVAh L2 Negative "

7080 kVAh L3 Positive "

7090 kVAh L3 Negative "

8000 kVA System System Total Apparent Power (kVA). Unsigned absolute value of (kVA L1) +

8001 kVA Sys Net System Net Ap parent Power (kVA). Signed net value of (kVA L1) + (kVA L2)

8010 kVA L1 Individual Phase Apparent Powers (kVA) (Signed)

8020 kVA L2 "

8030 kVA L3 "

8040 kVA Dem System Max System Maximum Instantaneous kVA Demand (kVA, resettable). It displays

8050 kVA Dem System Now Avera ge kVA for most recent deman d window (resettable). Displays the

Name Description

(kVA L2) + (kVA L3).

+ (kVA L3).

the defa ult value after a CAM unt il 1 demand window elapses. After a power cycle or CPU reset, th e v alue is not reset and does not update again until 1 demand w indow elapses. (Unsigned/Absolute)

default value after a CAM or reset, or power cycle. Updates every minute thereafter. True demand value takes a de mand period to get to actual value . (Unsigned/Absolute)

9000 DPF System Total Displacement Power Factor (PF) (Signed)

9030 APF System Total Apparent Power Factor (PF) (Signed)

9060 DPF L1 Individual Phase Displacement Power Factor (PF)

9090 DPF L2 "

9120 DPF L3 "

9150 APF L1 Individual Phase apparent Power Factors (PF)

9180 APF L2 "

9210 APF L3 "

10000 Frequency Line Fr equency ( H z)

10010 Time Since Reset Seconds since accumulator registers were reset.

12000 CTA Phase Sh All CT phase s hift (degrees)

12001 CT1 Phase Sh CT1 phase s hift (d egrees)

12002 CT2 Phase Sh CT2 phase s hift (d egrees)

12003 CT3 Phase Sh CT3 phase s hift (d egrees)

12010 CTA Value All Val u e

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Object

Identifier

12011 CT1 Value CT1 Value

12012 CT2 Value CT2 Value

12013 CT3 Value CT3 Value

12030 Pulse Scalar Changes the scaling of th e output pulses.

12040 Demand Win Demand window size in minutes ; default is 15 minutes.

12050 Volts Mult Multiply volts values by this scalar. For use with stepdown transformer.

12060 Amps Mul Mu ltiply amps value by this scalar. For use with x:5A CTs and single leg

12070 Com Settings Baud: 90 0 = 9600, 1900 = 19200, 3800 = 38400, 5700 = 57 600, 7600 =

12080 Service Ty pe A value of 1 configures the meter for D e lta.

Name Description

Affects all parameters that use volts.

monitoring of a three-phase load. Affects all parameters that use amps (such as kW).

76800, 11500 = 115200 Parity: Add 00 = NO, Add 10 = ODD, Add 20 = EVEN Stop bit: Add 0 = 1 (UAR T does not permit 0 stop bits),

Add 1 = 1, Add 2 = 2 For example: 901 = 9600 baud, no parity, 1 stop bit.

A value of 0 co nfigures the meter for Wye.

12090 Freq Set Line frequency setting for metering. 50 = 50 Hz, 60 = 60 Hz.

12130 CTA Type CT Type for all channels. 1 = MilliVolt, 2 = R ogowski.

12131 CT1 Type 1 = MilliVolt, 2 = Rogowski.

12132 CT2 Type 1 = MilliVolt, 2 = Rogowski.

12133 CT3 Type 1 = MilliVolt, 2 = Rogowski.

Configuration Objects (10020 - 13000)

Object

Identifier

10020 Data Acquisition Tick Internal sample count (gets clea red every minute): may be used to

10140 Clear Accumulated

10190 Communications

12001 CT1 Phase Shift CT1 phas e shift (degrees)

Name Description

determine if sample read is a newer s ample t han last read.

Writing 1 234 to the present value will reset all the acc umulator

Measurements

protocol

objects (kWh, kVAh, kVARh).

Used to change between BACnet and Modbus communications protocols.

12002 CT2 Phase Shift CT2 phas e shift (degrees)

12003 CT3 Phase Shift CT3 phas e shift (degrees)

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Object

Identifier

12011 CT1 Value CT1 Value

12012 CT2 Value CT2 Value

12013 CT3 Value CT3 Value

12030 Pulse Scalar C hanges the scaling of the output pulses.

12040 Deman d Wi nd ow Demand window siz e in minutes; defa ult is 15 minutes .

12050 Volts M ult ip li er Multiply volts values by this scalar. For use with stepdown

12061 CT1 Amps Multiplier Mu ltiply CT1 amps values by this scalar . For use w ith stepd own

12062 CT2 Amps Multiplier Mu ltiply CT2 amps values by this scalar . For use w ith stepd own

12063 CT3 Amps Multiplier Mu ltiply CT3 amps values by this scalar . For use w ith stepd own

12070 Com Settings Baud: 900 = 9600, 1900 = 19200, 3800 = 38400,

Name Description

transformer. Affec ts all parameters that use volts.

transformer. Affects all parameters that use amps .

5700 = 57600, 7600 = 76800, 1 1500 = 1152 00 Parity: Add 00 = NO, Add 10 = ODD, Add 20 = EVEN Stop bit: Add 0 = 1 (UAR T does not permit 0 stop bits), Add 1 = 1, Add 2 = 2. For example: 901 = 9600 baud, no parity, 1 stop bit.

12080 Servic e Ty pe A value of 1 configures the meter for Delta. A v alu e of 0 config ures

the meter for Wye.

12090 Line Fre qu enc y Line frequenc y setting for metering. 50 = 50 Hz, 60 = 60 Hz

12110 Snap Rog Threshol d “Snap to Zero” thresho ld Rogowski CTs. Regist er value is:

12120 Snap Volt Threshol d “Snap to Zero” threshold for voltage. Regis ter value is 1x:

12130 CT Type All Writes same type for all CTs: 1=Millivolt, 2=Rogowski

12131 CT1 Type 1 = MilliVolt, 2 = Rogowski.

12132 CT2 Type 1 = MilliVolt, 2 = Rogowski.

12133 CT3 Type 1 = MilliVolt, 2 = Rogowski.

12134 CT1 V oltage Source Individ ual Phas e Voltag e Sourc e

12135 CT2 V oltage Source Individ ual Phas e Voltag e Sourc e

12136 CT3 V oltage Source Individ ual Phas e Voltag e Sourc e

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Pulse Output/Input Objects

Appendices

Object

Identifier

13020 Port 1 output control when used as an o n/off-

open/closed switch

13100 Digital Port 1 Configuration

Turns p ulses on/off

13110 Port 1 pu lse output relay typ e 0 = Normally open (HIGH)

14014 BBMD IP Address LSW object identifier

14015 BBMD IP Address MSW object identifier

Name Description

0 = Output LOW (closed) 1 = Output HIGH (open) [default] Object 1 3100 present value must = 0 to use.

0 = No pulses, Port m ay be used as an on’/ offopen/closed switch 44001 = System kWh pulses 44008 = System kVARh pulses 44011 = System kVAh pulses

1 = Normally closed (LOW)

Device Status Objects

Object

Identifier

10080 Hardware ID Hardware revisions

Name Description

10090 Features New features

10130 Reset Processor Processor reset

10150 MD Model Power Meter Elem entIDUsed for ViewPoint to determine which element is

being read and total number of elements available. Element index multiplied by 256 + number of elements.

Positive Power/Energy Accumulator Objects

Object

Identifier

1080 kW System Average Positive Equals kWh Sys tem Positive/(Time Sinc e Reset/3600

1110 kW Sy stem Max imum Posi tive System Highes t Instanta neous Pos itive Draw Since R eset

1140 kW System Minimum Positive System Lowest Instantaneous Positive Draw Since Reset

2010 kWh System Total Positive System True Energy (kWh) Positive (Signed Net)

2040 kWh L1 Positive Individual Phase True Energy (kWh) (Signed)

Name Description

seconds/Hr) (resettable) (Signed Net)

(kW) ( Signed Net)

(kW, resettable)

2070 kWh L2 Positive "

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Object

Identifier

2100 kWh L3 Positive "

6010 kVARh System System Total Reactive Energy (Signed)

6020 kVARh Sys Total Pos System Total Positive Apparent Energy (kVAh) (Signed

6050 kVA R h L1 Pos it iv e Individual Phase Reactive Energy (kVAR) (Signed)

6080 kVA R h L2 Pos it iv e "

6110 kVA R h L3 Pos it iv e "

7001 kVAh System Total Positive System Total Positive Apparent Energy (kVAh) (Signed

7020 kVAh L1 Positive Individ ual Phase Apparent Energy LSW (kVAh) (Signed)

7050 kVAh L2 Positive "

7080 kVAh L3 Positive "

Name Description

Net) Accumulates only when kVAh is positive.

Net). Accumulates only when kW is present.

Negative Power/Energy Accumulator Objects

Object

Identifier

1090 Negative kW System Average Equ als kWh System N egative/(Time Since

1120 kW System Maximum Negative System Highest Instantaneous Negative Draw Since

1150 kW System Mini mum Negative System Lowest Instantaneous Negative Draw Since

2020 kWh System Total Negative System True Energy (kWh) Negative (Signed Net)

2050 kWh L1 Negative Individual Phase True Energy (kWh) (Signed)

2080 kWh L2 Negative "

2110 kWh L3 Negative "

6030 kVARh Sys Negative System Total Reactive Energy (Signed Net)

6060 kVARh L1 Negative Individual Phase Reactive Energy (kVARh) (Signed)

6090 kVARh L2 Negative "

6120 kVARh L3 Negative “

7002 kVAh System Tot al Negative System Total Negative Apparent Energy (Signed

Name Description

Reset/3600 seconds/Hr) (resettable).

Reset (kW)

Reset (kW, resettable)

Net). Accumulates only when kW is n egative.

7030 kVAh L1 Negative Individual P hase Apparent Energy LSW (kVAh)

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(Signed)

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t Analog Value Objects

Object

Identifier

7060 kVAh L2 Negative "

7090 kVAh L3 Negative "

Name Description

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Appendix B - MD-BMS and MD-BMED Power Meters Modbus Absolute/Net Value Measurement Registers and Protocol Commands

Offset refers to a base of 40001.

Table 15: Modbus Regist er Assignments.

Modbus Offset Register Description

44001 40 00 kWh System LSW System Total True Energy LS W (kWh)

44002 40 01 kWh System MSW System Total True En ergy MSW (kWh)

44003 40 02 kW System System Total True Power (k W). Unsigned absolute

44004 4003 kW Demand System Max System Maximum Demand (peak demand).

44005 4004 kW D emand Syste m Now Avera ge Pow er (kW) for most rece nt dem and wi ndow.

44006 40 05 kW System Max System Maximum Instantaneous kW

44007 40 06 kW System Min System Minimum Instantaneous kW

44008 4007 kVARh System LSW System Total Reactive Energy LSW (kVARh)

44009 4008 kVARh System MSW System Total Reactive Energy MSW (kVARh)

44010 4009 kVAR System System Total Reactive Power (kVAR). Unsigned

44011 4010 kVAh System LSW System Total Apparent Energy LSW (kVAh)

44012 40 11 kVAh System MSW System Total Apparent Energy MSW (kVA h)

44013 40 12 kVA System System Total Apparent Power (kVA) Unsigned WYE =

(ABS) value of ABS (kW L1) + ABS (kW L2) + ABS (kW L3).

(Highest kW sample measured)

(Lowest 500mS kW sample measured)

absolute (ABS) value of ABS (kVAR L1) + ABS (kVAR L2) + ABS (kVAR L3).

(kVA L1) + (kVA L2) + (kVA L3) Delta = SQRT (kW system ^2 + kVAR system ^2).

44014 4013 Displace ment P F Sys tem Sys tem Dis placement Pow er Fac tor (P F). R egister is

44015 4014 Apparent PF Sys tem System Apparent Power Factor (PF). Register is 100 ×

44016 4015 Amps System Avg Average of all ph as es .

44017 40 16 Volts Line to Line Avg Voltage Line to line (Volts) Average.

44018 40 17 Volts Line to Neutral Avg Voltage Li ne to neutral (volts) Average.

44019 4018 Volts L1 to L 2 Individual Phase to Phase Voltages

74 Building Technologies 125-202

100 × actual value.

actual value.

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Modbus Offset Register Description

44020 4019 Volts L2 to L3 Individual Phase to Phase Voltage

44021 4020 Volts L1 to L3 "

44022 4021 Lin e Fr e qu enc y Line Frequency (H z)

44023 4022 k Wh L1 LSW Individual Phase True Energy LSW (kWh)

44024 4023 k Wh L1 MSW Individual Phase True Energy MSW (kWh)

44025 4024 k Wh L2 LSW "

44026 4025 k Wh L2 MSW "

44027 4026 k Wh L3 LSW "

44028 4027 k Wh L3 MSW "

44029 4028 kW L1 Individual Phase True Powers (kW)

44030 4029 kW L2 "

44031 4030 kW L3 "

44032 4031 k VA Rh L1 LSW Individual Phase Reactive Energy LSW (kVARh)

44033 4032 k VA Rh L1 MSW Individual Phase Reactive Energy MSW (kVARh)

44034 4033 k VA Rh L2 LSW "

44035 4034 k VA Rh L2 MSW "

44036 4035 k VA Rh L3 LSW "

44037 4036 k VA Rh L3 MSW "

44038 4037 kVAR L1 Individual Phase Reactive Powers (kVAR)

44039 4038 kVAR L2 "

44040 4039 kVAR L3 "

44041 4040 kVAh L1 LSW Individual Phase Apparent Energy LSW (kVAh)

44042 4041 k VAh L1 MSW Individ ual Phase Apparent Energy MSW (kVAh)

44043 4042 kVAh L2 LSW "

44044 4043 k VAh L2 MSW "

44045 4044 kVAh L3 LSW "

44046 4045 k VAh L3 MSW "

44047 4046 kVA L1 Indiv idual Phase Apparent Powers (k VA)

44048 4047 kVA L2 "Individual Phase Apparent Powers

44049 4048 kVA L3 "

44050 4049 Displace ment PF L1 Individual Phase displacement Power Factor (PF)

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Modbus Offset Register Description

44051 4050 Displac ement PF L2 "

44052 40 51 Displacement PF L3 "

44053 40 52 Apparent PF L1 Individual Phase apparent Power Factors (PF)

44054 4053 Apparent PF L2 "

44055 40 54 Apparent PF L3 "

44056 40 55 Amps L1 Individual Phase Currents (A)

44057 4056 Amps L2 "

44058 4057 Amps L3 "

44059 4058 Volts L1 to Neutral Individual Phase to Neutral Voltages (V)

44060 4059 Volts L2 to Neutral "

44061 4060 Volts L3 to Neutral "

44062 4061 Time Since Reset LSW Seconds since KWH register was reset. LSW

44063 4062 Time Since Reset HSW Seconds since KWH register was reset. MSW

44064 4063 Data Tick Counter Internal sample count (gets cleared every minute): may

44080 40 79 kW System Avera ge Equals KWH_SYSTEM_L&M ÷ (TimeSinceReset_L&M

44081 40 80 kW Demand System Min System Minimum Demand (kW)

44082 40 81 kVA De mand Sy stem Max Sy stem M aximum Insta ntaneous kVA D emand (k VA,

44083 40 82 k VA Demand System Now System Averag e k VA Demand For th e most rec ent

44084 40 83 kVAR Demand System

Max

be used to deter mine if sample rea d is a newer sampl e than last r ead.

seconds /3600 seconds /Hr) (res ettable).

resettab le). It displays the default value after a CAM until one demand window el apses. Af ter a power cycle or CPU reset, the value is not reset and does not update ag ain until one demand wi n dow elapses .

(current) Demand Window (resettable). Displ ays the default value after a CAM or reset, or power cycle. Updates every minute thereafter. True demand value takes a demand period to ge t to actual v alue. Similar to

44005.

System Maximum kVAR Demand (kVAR, resettable). It displays the default val ue after a CAM until one demand w indow elapses. After a power cycle or CPU reset, the value is not reset and does not update again until one demand wi n dow elaps es .

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Table 16: Configurat ion Registers.

Modbus Offset Register Description

40129 0128 Synchronize Register Multiple MD Model Power Meter’s s y nchronization

44066 4065 Clear Accumulated

Measurements

44525 4524 CT Type All Writ es same type f or all DTs : 1=Milli Volt, 2=R ogowski.

44526 4525 Slave ID !1 = SIEMENS, 1 = Veris. Sets SLAVE_ID to Veris or

44599 4598 CT Phase Shift CT Phase Shift X 1 00 +/-

44600 4599 CT Integer All Integer value of all CTs. Writes same value to Registers

44601 4600 CT Decimal All Decimal value of all CTs. Writes same value to

44602 4601 Data Scalar A Value of 0-6 that changes the scal ing of certain

44603 4602 Demand Wind ow Size Demand w indow size in min utes; default is 15 minutes.

44604 4603 Volts M ult iplier Multiply volts values by this scalar. Use with Step-down

44605 4604 Amps Multiplier Multiply amps value by this scalar . For use w ith ×:5A

Writing 1234 resets all 'H' registers, accumulated MD Model Power Meter data (kWh, kWh, and so on) s tored in flash to CAM Default value.

SIEMENS.

Writes same value to Registers 50199, 50299, and

50399.

50100, 50 20 0, an d 50 300.

Registers 50100, 5020 0, and 50300.

registers.

Transformer. Affec ts all parameters that use volts (such as, kW).

CTs and single let monitoring of a three phase load. Affects all parameters that use amps (such as, k W).

44606 4605 Communication Setting Baud: 90 0 = 9600, 1900 = 19200, 3800 = 38400, 57 00

44607 4606 Servic e Type A v alue of 0x0001 configures t he meter for DELTA.

44609 4608 Set Li ne Frequency Line frequency set ting for m etering: 50 = 50 Hz, 60 =

44610 4609 Snap Rog Thres hold “Snap to Zero” threshold Rogowski CTs. Register valu e

44611 4610 Snap Volt Threshold “Snap to Zero” threshold for voltage. Register value is

44612 4611 Communications Settings Write 1883 to change to BACnet mode.

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= 57600, 7 600 = 7680 0, 11500 = 1 15200 Parity: Add 00 = NO, Add 10 = ODD, Add 20 = EVEN Stop bit: Add 0 = 1 (UAR T does not permit 0 stop bits), Add 1 = 1, Add 2 = 2 For example, 901 = 9600 baud, no parity, 1 stop bit.

A value of 0x0000 configures the meter for WYE. A value of 0x0002 config ures the m eter for Single Phase (PS24 only).

60Hz, 400 = 400 Hz

is:

1x:

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Modbus Offset Register Description

44616 4615 Volts Multiplier D ecimal Multiply volts values by (this scalar/1000+Volts

50100 10099 CT1 Integer Integer part of CT1

50101 10100 CT1 Decimal Frac tional part of NV_CT1

50125 10124 CT1 Type Select 1 = mV or 2 = Rogowski CT1s.

50199 10198 CT1 Phase Shift Phase Shift × 100 +/-

50200 10199 CT2 Integer Integer part of CT2

50201 10200 CT2 Decimal Frac tional part of NV_CT2

50225 10224 CT2 Type Select 1 = mV or 2 = Rogowski CT2s.

50299 10298 CT2 Phase Shift Phase Shift × 100 +/-

50300 10299 CT3 Integer Integer part of CT3

50301 10300 CT3 Decimal Frac tional part of NV_CT3

50325 10324 CT3 Type Select 1 = mV or 2 = Rogowski CT3s.

50399 10398 CT3 Phase Shift Phase Shift × 100 +/-

Multiplier Integer). Use with Step-down Transformer. Affects all parameters that use volts (such as kW).

Table 17: Writable Regist ers.

Modbus Offset Regis ter Description

40129 128 Synchronize Register Mu ltiple MD Model Power Meter’s sync hronization

44066 4065 Clear Accumulated

Measurements

Writing 1234 res ets all 'C' registers, accumulated Power Meter data (kWh, kWh, and so on) stored in flash to CAM Default value.

Table 18: Device Regist ers.

Modbus Offset Regis ter Description

44201 4200 Mo del Numbe r 1st 2 bytes Model Name 10 bytes (A SCII Al phanumeric )

44202 4201 Mo de l 2 "

44203 4202 Mo de l 3 "

44204 4203 Mo de l 4 "

44205 4204 Model Number last 2 bytes "

44206 4205 Serial Nu mber 1st 2 bytes Serial Number 10 by tes (ASCII Alphanumeric)

44207 4206 Ser i al 2 "

44208 4207 Ser i al 3 "

44209 4208 Ser i al 4 "

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BMED Power Meters Modbus Absolute/Net Value Measurement Registers and

Modbus Offset Register Description

44210 4209 Seri al Nu mb er last 2 bytes "

44511 4510 Hardware ID Hardware revisions.

44069 4068 Firmware Major Revision Major Revision Level (big software releases)

44070 4069 Firmware Minor Revision Minor Revision Level (small software changes)

Table 19: Net Measurement Registers

Modbus Offset Register Description

* Sys tem=Sum o f three ph ases

44150 4149 KWh System NET LSW ABS of the NET System Total True Energy LSW (kWh)

44151 4150 kWh System NET MSW ABS of the NET System Total True Energy MSW (kWh)

44152 4151 kWh L1 NET LSW ABS of the NET L1 True Energy LSW (kWh)

44153 4152 kWh L1 NET MSW ABS of the NET L1 TRUE Energy MSW (kWh)

44154 4153 kWh L2 NET LSW ABS of the NET L2 True Energy LSW (kWh)

44155 4154 kWh L2 NET MSW ABS of the NET L2 True Energy MSW (kWh)

44156 4155 kWh L3 NET LSW ABS of the NET L3 True Energy LSW (kWh)

44157 4156 kWh L2 NET SW ABS of the NET L3 True Energy MSW (kWh)

46150 6149 kWh System NET POS LSW Positive of the NET System Total True Energy LSW (kwH)

46151 6150 KwH System NET POS MSW Positive of the NET System Total True Energy MSW (kWh)

46152 6151 KWh L1 NET POS LSW Positive of the NET L1 True Energy LSW (kWh)

46153 6152 KWh L1 NET POW MSW Positive of the NET L1 True Energy MSW (kWh)

46154 6153 KWh L2 NET POS LSW Positive of the NET L2 True Energy LSW (kWh)

46155 6154 KWh L2 NET POS MSW Positive of the NET L2 True Energy MSW (kWh)

46156 6155 KWh L3 NET POS LSW Positive of the NET L3 True Energy LSW (kWh)

46157 6156 KWh L3 NET POS MSW Positive of the NET L3 True Energy MSQ (kWh)

47150 7149 KWh System NET NEG LSW Negative of the NET System Total True Energy LSW (kWh)

47151 7150 KWh System NET NEG MSW Negative of the NET System Total Tru e Energy MSW (kWh)

47152 7151 KWh L1 NET NEG LSW Negative of the NET L1 True Energy LSW (kWh)

47153 7152 kWh L1 NET NEG MSW Negative of the NET L1 True Energy MSW (kWh)

47154 7153 KWh L2 NET NEG LSW Negative of the NET L2 True Energy LSW (kWh)

47155 7154 KWh L2 NET NEG MSW Negative of the NET L2 True Energy MS W (kWh)

47156 7155 KWh L3 NET NEG LSW Negative of the NET L3 True Energy LSW (kWh)

47157 7156 KWh L3 NET NEG MSW Negative of the NET L3 True Energy MS W (kWh)

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System dPF (44014) is positive, this register will

Table 20: Pulse Output/Input Regist ers

Modbus Offset Register Description

44402 4401 Port 1 ou tput contr ol w hen used

as an on/off-open/closed switch

45110 5109 Digital Port 1 Config uration Turns

pulses on/off

45111 5110 Port 1 pu lse output relay typ e 0 = Normally open (HIGH)

0 = Output LOW (closed) 1 = Output HIGH (open) [default] Register 45110 mus t = 0 to use.

0 = No pulses, Port may be used as an on/off-open/closed switch 44001 = System kWh pulses 44008 = System kVARh pulses 44011 = System kVAh pulses

1 = Normally closed (LOW)

Table 21: Positive Power/Energy Measurement Registers.

Modbus Offset Register Description

46001 6000 Positive kWh System LSW System P os itive True E nergy LSW (kWh,

resettab le)

46002 6001 Positive kWh System MSW System Posit ive True Energy MSW (kWh,

resettable)

46003 6002 Positive kW System Sys tem Positive Instantaneous Positive True

46004 6003 kW Demand System Max Sys tem Maximum Demand (peak demand)

Power (kW) (net su m of all individual kWs, if sum is negative value = 0).

46005 6004 kW Demand System Now Average Power (kW) for most rec ent demand

window

46006 6005 Positive kW Sys tem Max System Net High est Instantaneous Positive Draw

Since Reset (kW, resettable)

46007 6006 Positive kW Sys tem Min Sy stem Net Lowest Instantaneous Positive Draw

Since Reset (kW, resettable)

46008 6007 Positive kVARh Sy stem LS W System N et P os itive Re ac tive Energy LSW

(kVARh, resettable)

46009 6008 Positive kVARh Sy stem MSW System Net Posi tive Reac tiv e E n ergy MSW

(kVARh, resettable)

46010 6009 Positive kVAR System System Net Instantaneous Positive Reactive

46011 6010 kVAh System LSW Sy stem Appar en t E nergy, LSW (res ettable)

46012 6011 kVAh System MSW System Apparent Energy, MSW (resettable)

46013 6012 kVA System System Instantaneous Apparent Power

46014 6013 Positive Displacement PF System System Positive Displacement Power Factor

Power (kVAR) (net sum of all individual kVARs, if sum is negative value = 0)

(dPF); Re gister is 100 × actu al value (If the

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Modbus Offset Register Description

ntain that value; otherwise, it will be zero).

Appendices

46015 6014 Positiv e A pparent PF S y stem System Positive Apparent Power Factor ( aPF);

46016 6015 Amps System Avg Average of the current in all p hases.

46017 6016 Volts Line to Line Avg Average of the sy stem line to line voltages.

46018 6017 Volts Line to Neutr al Avg Average of the system line to neutral voltages.

46019 6018 Volts L1 to L2 Ind ividual phase to ph ase voltages

46020 6019 Volts L2 to L3 “

46021 6020 Volts L3 to L1 “

46022 6021 Measured Line Frequenc y Line frequency x 10 (e.g., 602 = 60.2 Hz). On

46023 6022 Positive kWh L1 LSW Individual Phase Positive True Energy LSW (kWh,

46024 6023 Positive kWh L1 MSW Individual Phase Positive True Energy MSW

46025 6024 Positive kWh L2 LSW "

Register is 100x actual value (If the System aPF (44015) is positive, this register will contain that value; otherwise, it will be zero).

startup, 20 point averaging array is filled with first frequency read.

resettable)

(kWh, resettable)

46026 6025 Positive kWh L2 MSW "

46027 6026 Positive kWh L3 LSW "

46028 6027 Positive kWh L3 MSW "

46029 6028 Positive kW L1 Individual Phase Instantaneous Positive True

Powers (kW)

46030 6029 Positive kW L2 "

46031 6030 Positive kW L3 "

46032 6031 Positive kVAR h L1 LSW Individual Phase Positive Reactive Energy LSW

(kVARh, resettable)

46033 6032 Positive kVARh L 1 MSW Individual Phase Positive Reactive Energy MSW

(kVARh, resettable)

46034 6033 Positive kVAR h L2 LSW "

46035 6034 Positive kVARh L 2 MSW "

46036 6035 Positive kVAR h L3 LSW "

46037 6036 Positive kVARh L 3 MSW "

46038 6037 Positive kVAR L1 Individual Phase Positive Instantaneous Reactive

Powers (kVAR)

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Absolute/Net Value Measurement Registers and

Modbus Offset Register Description

46039 6038 Positive kVAR L2 "

46040 6039 Positive kVAR L3 "

46041 6040 kVAh L1 LSW Individua l Phase Apparent Energy LSW (kVAh,

resettable)

46042 6041 kVAh L1 MSW Individual Phase Apparent Energy MSW (kVAh,

resettable)

46043 6042 kVAh L2 LSW “

46044 6043 kVAh L2 MSW “

46045 6044 kVAh L3 LSW “

46046 6045 kVAh L3 MSW “

46047 6046 kVA L1 Individual Phase Instantaneous Apparent Powers

(kVA)

46048 6047 kVA L2 “

46049 6048 kVA L3 “

46050 6049 Positive Displacement P F L1 Individual Phase Positive Displacement Power

46051 6050 Positive Displacement P F L2 "

46052 6051 Positive Displacement P F L3 "

46053 6052 Positive Appare nt PF L1 Individual Phase Positive Apparent Power Factors

46054 6053 Positive Apparent PFL2 "

46055 6054 Positive Appare nt PF L3 "

46056 6055 Amps L1 Individual Phase Instantaneous Currents (A)

46057 6056 Amps L2 “

46058 6057 Amps L3 “

46059 6058 Volts L1 to Neutral Individual Instantaneous Phase to Neutral

Factors (dPF); Register is 100 × actual value (If the Individual dPF (44050) is positive, this register will contain that value; otherwise, it will be zero).

(aPF); Re gister is 100 × actu al value (If the Individ ual aPF( 44053) is positive, this r egister w ill contain that value; otherwise, it will be zero).

Voltages (V)

46060 6059 Volts L2 to Neutral “

46061 6060 Volts L3 to Neutral “

46062 6061 Time Since Res et LSW (Secon ds) Seconds since kWh, kVAh, kVA Rh and

46063 6062 Time Since Res et MSW (S econds) Seco nds since CAM. MSW

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rement Registers and

Modbus Offset Register Description

Appendices

46080 6079 Positive kW Sy stem Average Equals Positive KWH_SYSTEM_L&M ÷

46081 6080 Positive kW Demand System

Minimum

46082 6081 kVA Demand System Maximum Maximum Instantaneous kVA Demand (kW,

46083 6082 kVA Demand System Now Sys tem Average kVA Dema nd for the most recent

46084 6083 kVAR Demand System Max System Maximum kVAR Demand (kVAR,

(TimeSinceReset_L&M seconds /3600 seconds/Hr) (resettable).

Minimum Average power window (kW)

resettable).

(current) Demand Window (resettable).

resettab le). It displays the default value after a CAM until one demand window elapses. After a power cycle or CPU reset, the value is not reset and does no t update again until one demand window el apses.

Table 22: Negative Power/Energy Measurement Registers.

Modbus Offset Regis ter Description

47001 7000 Negative kWh System LSW System Negative True Energy LSW (kWh,

resettable)

47002 7001 Negative kWh Sy stem MSW Sys tem Negative True Energy MSW (kWh ,

resettable)

47003 7002 Negative kW System System Negative Instantaneous Negative True

47004 7003 kW Demand System Max System Maximum Demand (peak demand).

47005 7004 kW Demand System Now Average Power (kW) for mos t recent demand

47006 7005 Negative kW System Max System Net Highest Instantaneous Negative

47007 7006 Negative kW System Min System Net Lowes t Instantaneous N egative

47008 7007 Negative kVARh System LSW System Net Negative Reactive Energy LSW

47009 7008 Negative kVARh System MSW System Net Negative Reactive Energy MSW

47010 7009 Negative kVAR System System Net Instantaneous Negative Reactive

47011 7010 kVAh System LSW System Apparent Energy LSW (kVAh,

47012 7011 kVAh System MS W Sys tem A pparent Energy MSW (kVAh,

Power (kW) (net su m of all individual kWs , if sum is positive val ue = 0).

window

Draw Since Reset (kW, resettable)

(kVARh, resettable)

Power (kVAR) (net sum of all individual kVARs, if sum is positive value = 0)

resettable)

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Modbus Offset Register Description

47013 7012 kVA System System Instantaneous Apparent Power (kVA)

47014 7013 Neg ative Displac ement PF System System Negat ive Displaceme nt Power Factor

47015 7014 Negative Apparent PF System System Negative Apparent Power Factor (aPF);

47016 7015 Amps System Avg Average of the current in all phases.

47017 7016 Volts Line to Line Avg Average of the system line to line voltages.

47018 7017 Volts Line to Neutral Av g Average of the system line to neutral voltages.

47019 7018 Volts L1 to L2 Indiv idual phase to phase voltages

47020 7019 Volts L2 to L3 “

47021 7020 Volts L3 to L1 “

47022 7021 Me asured Li ne Frequency Line frequency × 10 (for example: 602 = 60.2

47023 7022 Negative k Wh L1 LSW Individual Phase Negative True Energy LSW

(dPF); Register is 100x actual value (If the System dPF (44014) is Negative, this re gister will contain that value; otherwise, it is zero)

Register is 100 × actu al value (If the System aPF (44015) is Negative, this register will contain that value; otherwise, it is zero).

Hz). On st artup, 20 poi nt averag ing array is filled with first frequency rea d.

(kWh, resettable)

47024 7023 Negative k Wh L1 MSW Individual Phase Negative True Energy MSW

(kWh, resettable)

47025 7024 Negative k Wh L2 LSW "

47026 7025 Negative k Wh L2 MSW "

47027 7026 Negative k Wh L3 LSW "

47028 7027 Negative k Wh L3 MSW "

47029 7028 Negative kW L1 Individual Phase Instantaneous Negative True

Powers (kW)

47030 7029 Negative kW L2 "

47031 7030 Negative kW L3 "

47032 7031 Negative k VARh L1 LSW Individual Phase Negative Reactive Energy

LSW (kVA R h, resettable)

47033 7032 Negative kV ARh L1 MSW Individual Phase Negative Reactive Energy

MSW (kVARh, resettable)

47034 7033 Negative k VARh L2 LSW "

47035 7034 Negative kV ARh L2 MSW "

47036 7035 Negative k VARh L3 LSW "

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BMED Power Meters Modbus Absolute/Net Value Measurement Registers and

Modbus Offset Register Description

47037 7036 Negative kVARh L3 MSW "

47038 7037 Negative kVAR L1 Individual Phase Negative Instantaneous

Reactive Powers (kVAR)

47039 7038 Negative kVAR L2 "

47040 7039 Negative kVAR L3 "

47041 7040 kVAh L1 LSW Indiv idual Phase Apparent En ergy LSW (kVAh,

resettable)

47042 7041 kVAh L1 MSW Individua l Phase Apparent Energy MSW (kVAh,

resettable)

47043 7042 kVAh L2 LSW “

47044 7043 kVAh L2 MSW “

47045 7044 kVAh L3 LSW “

47046 7045 kVAh L3 MSW “

47047 7046 kVA L1 Individual Phase Instantaneous Apparent

Powers (kVA)

47048 7047 kVA L2 “

47049 7048 kVA L3 “

47050 7049 Negative Displacement PF L1 Individual Phase Negative Displacement Power

47051 7050 Negative Displacement PF L2 "

47052 7051 Negative Displacement PF L3 "

47053 7052 Negative Apparent PF L1 Individual Phase Negative Apparent Power

47054 7053 Negative Apparent PFL2 "

47055 7054 Negative Apparent PF L3 "

47056 7055 Amps L1 Individual Phase Instantaneous Currents (A)

Factors (dPF); Register is 100 × actual value (If the Individual dPF(44050) is Negative, this register will contain that value; otherwise, it will be zero).

Factors (aPF); Register is 100 × actual value (If the Individual aPF (44053) is Negative, this register will contain that value; otherwise, it will be zero).

47057 7056 Amps L2 “

47058 7057 Amps L3 “

47059 7058 Volts L1 to Neutral Individual Instantaneous Phase to Neutral

47060 7059 Volts L2 to Neutral “

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BMED Power Meters Modbus Absolute/Net Value Measurement Registers and

Modbus Offset Register Description

47061 7060 Volts L3 to Neutral “

47062 7061 Ti me Since R eset LSW (Secon ds) Sec onds since kWh, k VAh, kVARh and

47063 7062 Ti me Since Reset MSW (Seconds ) Seconds since CAM. MSW

47080 7079 Negative kW System Average Equals Negative KWH_SYSTEM_L&M ÷

46081 7080 Negative k W Demand System

Minimum

47082 7081 kVA Demand System Maximum Maximum Instantaneous kVA Demand (kW,

47083 7082 kVA Demand System Now System Average kVA D emand for th e most

47084 7083 kVAR Demand System Max System Maximum kVAR Demand (kVAR,

associated Demand registers were reset. LSW (resettable).

(TimeSinceReset_L&M seconds /3600 seconds/Hr) (resettable).

Minimum Average power window (kW)

resettable).

recent (current) Demand Window (resettable).

resettab le). It displays the default value after a CAM until one demand window elapses. After a power cycle or CPU reset, the value is not reset and does no t update again until one demand window el apses.

Protocol Commands

The Modbus messaging protocol used for communication follows the Modbus RTU protocol described in this section. Each register read from or written to the power meters is a 16-bit, unsigned, positive integer v alue. The MD- BMS and MD-BMED power meters support the following commands:

Table 23: Supported Modbus Commands.

Command Name Command Number

(Hex)

Read Holding Registers 03 Used to read the data values from the power

Write Single Register 06 Used to write a single holding register to an

Report Slave ID 11 Used to read information from the identified

Description

meter.

MD-BMS or MD-BMED power meter.

power meter .

The following guidelines are used for these Modbus commands:

● All values are hexadec imal; spaces are not included.

● The address is t he value of the address switch on t he power met er. This must be

different f or each power meter on a single Modbus network.

● The register’s high-order and low-order bits are t he 16-bit value of a single, or first register to be acc essed f or a read or write.

● The CRC is the 16-bit CRC value. Note t hat the CRC’s LSB and MSB are reversed in comparison to those for the registers and data.

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Read Holding Registers

This command reads the contents of a contiguous block of holding registers containing data values from the power meter. When a read command is received, the power meter sends a response t hat includes the value of the requested registers.

Table 24: Format for Modbus Command 03.

Command Information Com m an d Lay o ut Example Command

Power meter address Nn 37

Comman d nu mb er 03 03

First reg ister to read – high or der bits xx 00

First reg ister to read – low order bits xx 0C

Number of registers to read – high order bits Xx 00

Number of registers to read – low order bits xx 01

CRC low order bits xx 41

CRC high order bits Xx 9F

Command Example This command reads f rom a power meter with an address switch setting of 37 hex,

reading one byte starting at register offset 0C hex. Note that offset 12 corresponds to Modbus register 40013. All values are hexadecimal.

Table 25: Example f or Modbus Command 03.

Example Request Field Name Command

(Hex)

Power meter address 37 Power meter address 37

Command 03 Command 03

Starting register address to readhigh order bi ts

Starting register address to read-low order bits

Number of registers to read – high order bits

Number of registers to read – low order bits

00 Byte count 02

0C Regis ter value- high order bits 00

00 Register value – low order bi ts 00

01 CRC low order bits 70

Response Field Name Response

(Hex)

CRC low order bits 41 CRC high order bits 40

CRC high order bits 9F

Command: 3703000C0001 419F Response: 37030200007040

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BMED Power Meters Modbus Absolute/Net Value Measurement Registers and

The value sen

t as the register address in the read and write Modbus commands is

The response from the power meter at address 37. Two bytes were read from the requested regist er, 000C. The value of the registers read was 0000. The DRC value was 4070. The number of registers read must be between 1 and 125, inclusive.

not the register listed in the table, instead an abbreviated version is sent. The actual register address sent is the Modbus register value minus 40001. For example, the address sent in the command message for regist er 40025 is actually 4061 (0FDD hexadecimal).

Write Single Register

This command writes to a single holding register of the power meter. The normal response is an ecno of the request, returned after the register contents are writ ten.

Table 26: Format for Modbus Command 06.

Command Information Command Lay o ut Example Command

Power meter address nn 37

Comman d nu mb er 06 06

CRC low order bits xx 8C

CRC high order bits Xx 5C

Command Example This command writ es to a power met er with an address switch setting of 37 hex (55 in

decimal), writing one byte at register 000C, and writing a value of 00 to clear the KWH registers. The data value of 0 is sent to register 0. Note that offset 0 corresponds to Modbus register 40001. The CRC is 5C8C. All values are hexadecimal.

Table 27: Example f or Modbus Command 06.

Example Request Field Name Command

(Hex)

Power meter address 37 Pow er meter address 37

Comman d nu mb er 06 Comm an d nu mb er 06

Response Field Name Respons e

(Hex)

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00 Register value written – high order

bits

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BMED Power Meters Modbus Absolute/Net Value Measurement Registers and

Example Request Field Name Command

(Hex)

CRC low order bits 8C CRC low order bits 8C

CRC high order bits 5C CRC high order bits 5C

00 Register value written – low order

Response Field Name Respons e

(Hex)

bits

Command: 37060000000 18CSC Response: 3706000000018CSC The response is from the power meter at address 37. One byte was written to at the

requested regist er, 0000. The value written was 0000. The CRC value was 5C8C. An echo of the original command after the contents ar e written is a valid response.

Error Response If the first register in this write command is not in the valid range of registers, the power

meter returns an error message.

Report Slave ID

This command is used to read the description, current status, and other information specific to a remote device. A normal response includes the data contents specific to the device.

Table 28: Format for Modbus Command 11 (17 in Decimal).

Command Information C om m an d Lay o ut Example Command

Power meter address nn 37

Comman d nu mb er 11 11

Command Example

Table 29: Example for Modbus Command 11 (17 in Decimal).

Example Request Field Name Command

(Hex)

Power meter address 37 Power meter ad dress 37

Comman d nu mb er 11 Comman d nu mb er 11

CRC low or5der bits 07 Byte count

CRC high order bits 8C Slave ID

Response Field Name Response

(Hex)

Run indicator stat us

Additional data

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BMED Power Meters Modbus Absolute/Net Value Measurement Registers and

Slave ID The MD-BMS and MD-BMED power meters use the following default format for the

slave ID:

Siemens Industry MD-BMS, Serial Number, FW Ref Major Revision, Minor Revision, Scalar X.

Example:

Siemens Industry MD-BMS, PS3912001, FW Rev 10, Scalar 3

NOTE: See

Veris H8035/H80346 Emulation

for slave ID structure while in Veris

emulation.

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Appendices

Appendix C

Connecting Multiple MD Power Meters to an RS

485 Network

Appendix C - Connecting Multipl e MD Power Meters to an RS-485 Network

This section desc ribes setting up a network with multiple MD-BMS or MD-BMED Power Meters using the BACnet or Modbus communication protocol. An RS-485 network can support up to 127 MD-BMS or MD-BMED devices using the BACnet protocol and 247 MD-BMS or MD-BMED devices using the Modbus protocol. Due to typical BAS net work traffic, it is suggested to limit the BACnet devices to less than 100 meters on a network and Modbus devices to less than 150 meters on a network. This estimation is f or sizing only; more meters may be possible depending on cont rol system network traffic.

Communication Protocol

BACnet MS/TP and Modbus RTU are standar d communication protocols that allow communication between a client and multiple devices connect ed to the same network. RS-485 is the protocol standard used by MD-BMS or MD-BMED meters as the hardware’s physical int erface while BACnet or Modbus is the networking prot ocol.

Daisy Chain Layout for RS-485 Network

When multiple devices are connected, the devices must be connected in a daisy chain. A daisy chain means t hat all plus (+ ) connections are chained together, and all minus () connections are chained together across the network.

A network containing multiple devices requires a unique address for each device. This allows the master device to identify and communicate with each slave. The BACnet/Modbus network administrator must assign a unique network address to each MD-BMS or MD-BMED Power Meter using the rotary switches MSB and LSB.

Other network layout s (for example, star) are not rec ommended when using the RS485 standard.

Networking Using the BACnet MS/TP/Modbus RTU Protocol

1. Install the RS-485 cable on the RS-485 comm unications terminal block.

2. Set a unique address for each device using the table in

Communication Prot ocol

in the

Prepping for Installat ion

Establishing

section.

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Appendices

Appendix D

Installing Firmware Updates for the MD

BMS and MD

BMED Power Meter

Appendix D - Installing Firmware Updates for the MD-BMS and MD-BMED Power Meter

MD-BMS and MD-BMED Power Meter firmware updates ar e available from the website noted below, typically contained in a Zip file that can be downloaded, unzipped and installed using ViewPoint. The MD-BMS and MD-BMED Power Meters require ViewPoint 4.1 or lat er.

You can download the latest version of ViewPoint soft ware for free from the following site:

Web Link: www. dentinstruments.com/s iemens User Name: siem ens Password: mdpowermeter

Downloading and Installing Firmware

● Download the Zip file containing the firmware. Extract the Zip file to a folder on the computer.

You can download the latest version of ViewPoint soft ware for free from the following site:

Web Link: www. dentinstruments.com/s iemens User Name: siem ens Password: mdpowermeter

1. Connect the computer to the MD-BMS or MD-BMED Power Meter using the USB port. See

Power Meter

2. Select the baud rate for loading the firmware t o the MD-BMS or MD-BMED Power Meter. A baud rate of 9600 downloads the firmware to the MD-BMS or MD-BMED in approximately six minutes. A faster baud rate can be selected to reduce the time by approximately 2. 5 minutes. Change the baud rate using the Communications tab and selecting t he desired baud rate. The baud rat e is synchronized between ViewPoint and the MD- BMS or MD-BMED meter by clicking the Connect butt on.

3. Select the Firmware tab in ViewPoint. Click Browse to locate the extracted firmware files. Click Update to start t he firmware update. See

Software

When the update com pletes, ViewPoint displays a message window confirming a successful updat e.

● If the baud rate was changed using an RS-485 for the firmware update, restore the baud rate to its original set ting.

Installing the ViewP oint Software and Communicating with the MD Model

for additional information.

Using the ViewPoint

Verifying Installation with ViewPoint Software

In addition to ver ifying your connections wit h the Phase LEDs on the front of the meter, you can use the ViewPoint software to check connections. Any computer running ViewPoint software can display information about the meter's real time values for local verification of operation.

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Appendices

Appendix D

Installing Firmware Updates for the MD

BMS and MD

BMED Power Meter

Real-Time Values Screen

Click on the Real-Time Values tab at the top of the ViewPoint screen t o display current measured values.

The R eal-Time Values screen shows current readings to verify that the system is configured properly. The tables display the real- time values of Volts, Amps, Kw, KVA, KVAR, and Power Factor (PF) for Phase L1, Phase L2, and Phase L3. This screen also displays the CT type connected to the MD-BMS or MD-BMED Power Meter and the CT value.

Values displayed for Volts, Amps, Kw, and so on should make sense; meaning that the values in the table are r elevant for the service being measured. This indicates the MDBMS or MD-BMED Power Meter s etup is correct. It may also be useful to use a handheld amp meter t o test the current and compare its readings to the values provided on the Real-Time Values screen.

To acquire new measurem ent values, click Update to retrieve a new set of values for the MD-BMS or MD-BMED Power Meter. For Auto-Update, select the check box to automatically updat e values approximately every 20 seconds.

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Appendices

Appendix D

Installing Firmware Updates for the MD

BMS and MD

BMED Power Meter

This Real

Time Values data is for data monitoring and verification only.

Using the Optional Visual Display to Verify Real-Time Values (MD-BMED Model Only)

The MD-BMED Power Meter has a two-line × 16-character bac klit visual display that enables you to read real-time values directly from the meter. It has two rows of 16 characters t hat auto cycle between informat ional screens every two to three seconds, with real-time values updated every second. Click the Hold button (located on the side of the meter) to stop the cycle until it is clicked again, or until a set t imeout is reached. Some informat ion such as protocol, CT type, Volts, Aps, Kw, PF and so on, is displayed during each cycle. See

Appendix H

for complete cycle inf ormation.

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Appendices

Appendix E

–

Modbus VERIS H8035/H8036 Emulation

Appendix E – Modbus VERIS H8035/H8036 Emulation

The MD-BMS and MD-BMED Model Meters can be used as a direct replacements for the Veris, Inc. H8035/H8036 series of networked power meters. This mirroring of the Veris Modbus register assignments makes replacement with an MD-BMS or MDBMED Power Meter simple. However, because the number of parameters that the Veris meters measur e is less than half of what the MD-BMS or MD-BMED Model Power Meter c an measure, the other Modbus registers described in the table need to be used to utilize t he additional capabilities of t he MD-BMS and MD-BMED Power Meters.

Writing a 1 to register 44526 sets the Slave ID to Veris mode and ViewPoint lists the Veris registers in the ViewPoint Read/Write Registers tab.

When register 44526 contains a 1 for Veris mode, the Slave ID command format is:

91hFFh(Veris type), Full-Data, Modbus, (CT value) Amp

The following is an example command with CT set for 100A:

91hFFhVeris H8036-0100-2, Full-Data, Modbus, 100 Amp

Example command explanat ion:

● 91h = version control

● FFh = standard for active

The 91h and FFh are 4 bytes in front of the string that are not displayed in the RTU.

Table 30: CT Amp Rating to Ver is Models.

CT Amperage Rating Veris M od el N u mb er

CT ≤ 100A Veris Type = H8036-0 100-2

CT Value = 100A

100A < CT ≤ 300A Veris Type = H8036-030 0-2

CT Value = 300A

300A < CT ≤ 400A Veris Type = H8036-040 0-2

CT Value = 400A

400A < CT ≤ 800A Veris Type = H8036-030 0-3

CT Value = 800A

800A < CT ≤ 1600A Veris Type = H8036 -1600-4

CT Value = 1600A

CT >1600A Veris Type = H8036-2400-4

CT Value = 1400A

Table 31: ViewPoint Register Descriptions

Modbus

Regis ter

40001 0 kWh System LSW System True Energy (kWh, Resettable)

Offset ViewPoint Name Description

40002 1 kWh System MSW System True Energy (kWh, Resettable)

40003 2 kW Syste m System True Power (kW)

40004 3 kVAR System System Re active Power (kVAR)

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Appendices

Appendix E

–

Modbus VERIS H8035/H8036 Emulation

Modbus

40005 4 kVA System System Appar ent Power (kVA)

40006 5 Apparent PF Sys tem System Apparent Power Factor (PF)

40007 6 Volts Line to Line Avg Average Line to Line Voltage

40008 7 Volts Line to Neutral A vg Average Li ne to Neutr al Voltage

40009 8 Amps System Avg Average c urr ent of all ph ases

40010 9 kW L1 Individual Phase True Powers (kW, 3 values)

40011 10 kW L2 "

40012 11 kW L3 "

40013 12 Appare nt PF L1 Individual Phase Apparent Power Factors (PF, 3

40014 13 Appare nt PF L2 "

40015 14 Appare nt PF L3 "

40016 15 Volts L1 to L2 Individual Phase to Phase Voltages (Volts, Delta, 3

Offset ViewPoint Name Description

values)

40017 16 Volts L2 to L3 "

40018 17 Volts L1 to L3 "

40019 18 Volts L1 to Neutral Individual Phase to Neutral Voltages (Volts, Wye, 3

values)

40020 19 Volts L2 to Neutral "

40021 20 Volts L3 to Neutral "

40022 21 Amps L1 Individual Phase Currents (Amps, 3 values)

40023 22 Amps L2 "

40024 23 Amps L3 "

40025 24 kW System Avg Equals KWH_SY STEM_ L&M ÷ (TimeSinceReset_L&M

seconds /3600 seconds /Hr) (res ettable)

40026 25 kW Demand System Min System Minimum Demand (kW, resettable), It displays

40027 26 kW Demand Syste m Max System Maximu m Demand (kW, resettable). Behaves

the default value after a CAM until 1 demand window elapses. After a power cycle or CPU reset, the value is not reset and does not update again u ntil 1 demand window el apses.

as 40026.

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Appendix E

–

Modbus VER

IS H8035/H8036 Emulat ion

Table 32: Veris Multipliers for Integer Registers 40001-40027.

Address Units ≤ 100A 101-400A 401-800A 801-1600A 1601-32,000A

40001 kWH LSB 7.8125exp-3 0.03125 0.0625 0.125 0.25

40002 kWH MSB 512 2048 4096 8192 16384

40003 kW 0.004 0.016 0.032 0.064 0.128

40004 kVAR 0.004 0.016 0.032 0.064 0.128

40005 kVA 0.004 0.016 0.032 0.064 0.128

40006 aPF 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5

40007 VOLTS L-L 0.03125 0.03125 0.03125 0.03125 0.03125

40008 VOLTS L-L 0.015625 0.015625 0.015625 0.015625 0.015625

40009 AMPS 3.9063exp-3 0.01 5625 0.03125 0.0625 0.125

40010 kW L1 0.001 0.004 0.008 0.016 0.032

Appendices

40011 kW L2 0.001 0.004 0.008 0.016 0.032

40012 kW L3 0.001 0.004 0.008 0.016 0.032

40013 aPF L1 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5

40014 aPF L2 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5

40015 aPF L3 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5

40016 VOLTS L1-L2 0.03125 0.03125 0.03125 0.03125 0.03125

40017 VOLTS L2-L3 0.03125 0.03125 0.03125 0.03125 0.03125

40018 VOLTS L3-L1 0.03125 0.03125 0.03125 0.03125 0.03125

40019 VOLTS L1-N 0.015625 0.015625 0.015625 0.015625 0.015625

40020 VOLTS L2- N 0.015625 0.015625 0.015625 0.015625 0.015625

40021 VOLTS L3- N 0.015625 0.015625 0.015625 0.015625 0.015625

40022 AMPS L1 3.9063exp-3 0.015625 0.03125 0.0625 0.125

40023 AMPS L2 3.9063exp-3 0.015625 0.03125 0.0625 0.125

40024 AMPS L3 3.9063exp-3 0.015625 0.03125 0.0625 0.125

40025 kW 0.004 0.016 0.032 0.064 0.128

40026 kW 0.004 0.016 0.032 0.064 0.128

40027 kW 0.004 0.016 0.032 0.064 0.128

Per the Veris implement ation, to obtain true engineering units, the values returned from the registers in the ViewPoint Register Des criptions Table must be mult iplied by the scaling values listed in T able 23:

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Appendices

Appendix E

–

Modbus VERIS H8035/H8036 Emulation

For example, if the MD-BMS or MD-BMED Model Power Meter has 100A CTs connected to it , the system reactive power (kVAR) is calculated by:

● Read register 40004.

● Multiply the value returned f rom register 40004 by 0.004.

Table 33: VERIS Modbus Floating Point Registers

Modbus

40257 256 VERIS Float kWh System MSW System Net True Energy (kWh, Resettabl e)

40258 257 VERIS Float k Wh System LSW System Net True Energy (kWh, Resettable)

40261 260 VERIS Float kW Sys tem MSW System Total True Power MSW

40262 261 VERIS Float kW Sys tem LSW System Total True Power LSW

40263 262 VERIS Float kVAR System MSW System Total Reactive Power MSW

40264 263 VERIS Float kVAR System LSW System Total Reactive Power LSW

40265 264 VERIS Float kVA Sys tem MSW System Total Apparent Pow er MSW

Offset ViewPoint Name Description

40266 265 VERIS Float kVA Sys tem LSW System Total Apparent Power LSW

40267 266 VERIS Float PF System MSW System Total Pow er Factor MS W

40268 267 VERIS Float PF System LSW System Total P ower Factor LSW

40269 268 VERIS Float Volts Line to Line Avg MSW Voltage Line to Line Average MSW

40270 269 VERIS Float Volts Line to Line Avg LSW Voltage Line to Line Average LSW

40271 270 VERIS Float Volts Line to Neutral Avg MSW Volt age Line to Neutr al Average MSW

40272 271 VERIS Float Volts Line to Neu tral Avg LS W Voltage Line to N eutral Average LSW

40273 272 VERIS Float Amps System Avg MSW Total Current in all Phases MSW

40274 273 VERIS Float Amps System Avg LSW Total Current in all Phases LSW

40275 274 VERIS Float kW L1 MSW Individ ual Phase True Power L1 MSW

40276 275 VERIS Fl oat kW L1 LS W Individual Phase True Power L1 LSW

40277 276 VERIS Float kW L2 MSW Individ ual Phase True Power L2 MSW

40278 277 VERIS Fl oat kW L2 LS W Individual Phase True Power L2 LSW

40279 278 VERIS Float kW L3 MSW Individ ual Phase True Power L3 MSW

40280 279 VERIS Fl oat kW L3 LS W Individual Phase True Power L3 LSW

40281 280 VERIS Float Appa rent PF L1 MSW Individual Phas e Appare nt Power Factor L1 MSW

40282 281 VERIS Float Appa rent PF L1 LSW Individual Phase A pparent Power Factor L1 LSW

40283 282 VERIS Float Appa rent PF L2 MSW Individual Phas e Appare nt Power Factor L2 MSW

40284 283 VERIS Float Appa rent PF L2 LSW Individual Phase A pparent Power Factor L2 LSW

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Appendices

Appendix E

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Modbus VERIS H8035/H8036 Emulation

Modbus Register

40285 284 VERIS Float Appa rent PF L3 MSW Individual Phas e Appare nt Power Factor L3 MSW

40286 285 VERIS Float Appa rent PF L3 LSW Individual Phase A pparent Power Factor L3 LSW

40287 286 VERIS Float Volts L1 to L2 MSW Phase to Phase Voltage L1 to L2 MSW

40288 287 VERIS Fl oat V olts L1 to L2 LSW Phase to Phase Voltage L1 to L2 LSW

40289 288 VERIS Float Volts L2 to L3 MSW Phase to Phase Voltage L2 to L3 MSW

40290 289 VERIS Fl oat V olts L2 to L3 LSW Phase to Phase Voltage L2 to L3 LSW

40291 290 VERIS Float Volts L1 to L3 MSW Phase to Phase Voltage L1 to L3 MSW

40292 291 VERIS Fl oat V olts L1 to L3 LSW Phase to Phase Voltage L1 to L3 LSW

40293 292 VERIS Fl oat V olts L1 to Ne utral MSW Phase to Neutral Voltage L1 to N MSW

40294 293 VERIS Float Volts L1 to Neutra l LSW Phase to Neutral Voltage L1 to N LSW

40295 294 VERIS Fl oat V olts L2 to Ne utral MSW Phase to Neutral Voltage L2 to N MSW

40296 295 VERIS Float Volts L2 to Neutra l LSW Phase to Neutral Voltage L2 to N LSW

40297 296 VERIS Fl oat V olts L3 to Ne utral MSW Phase to Neutral Voltage L3 to N MSW

Offset ViewPoint Name Description

40298 297 VERIS Float Volts L3 to Neutra l LSW Phase to Neutral Voltage L3 to N LSW

40299 298 VERIS Fl oat Amps L1 MSW Phase Current L1 MS W

40300 299 VERIS Fl oat Amps L1 LSW Phase Curre nt L1 LSW

40301 300 VERIS Fl oat Amps L2 MSW Phase Current L2 MS W

40302 301 VERIS Fl oat Amps L2 LSW Phase Curre nt L2 LSW

40303 302 VERIS Fl oat Amps L3 MSW Phase Current L3 MS W

40304 303 VERIS Fl oat Amps L3 LSW Phase Curre nt L3 LSW

40305 304 VERIS Float kW System Avg MS W System Average Power MSW

40306 305 VERIS Float kW System Avg LSW System Avera ge Power LS W

40307 306 VERIS Float Demand Sys tem Mini mum MSW System Minimum De mand MSW

40308 307 VERIS Float Demand Sys tem Mini mum LSW System Minimu m De mand LSW

40309 308 VERIS Float Dem and Syste m Maximu m MSW Sys tem M aximum Demand MSW

40310 309 VERIS Float Demand System Maximum LSW System Max imum Dem and LSW

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Appendices

Appendix F

Decimal to Hexadecimal Conversion Table

Appendix F - Decimal to Hexadecimal Conversion Table

Decimal values are used f or the MD Series Power Meter addresses. The hex value is the corresponding value set on the upper and lower rotary network address switches on the MD Model Power Meter.

● Upper rotary network address switch = high (firs t) digit

● Lower rotary network address switch = low (second) digit

Table 34: Decimal t o Hexadecimal Conversion.

Decimal Hex Deci mal H ex Decimal Hex Decimal H ex Decimal Hex Dec imal Hex

1 01 44 2C 87 57 130 82 173 AD 216 D8

2 02 45 2D 88 58 131 83 174 AE 217 D9

3 03 46 2E 89 59 132 84 175 AF 218 DA

4 04 47 2F 90 5A 133 85 176 B0 219 DB

5 05 48 30 91 5B 134 86 177 B1 220 DC

6 06 49 31 92 5C 135 87 178 B2 221 DD

7 07 50 32 93 5D 136 88 179 B3 222 DE

8 08 51 33 94 5E 137 89 180 B4 223 DF

9 09 52 34 95 5F 138 8A 181 B5 224 E0

10 0A 53 35 96 60 139 8B 182 B6 225 E1

11 0B 54 36 97 61 140 8C 183 B7 226 E2

12 0C 55 37 98 62 141 8D 184 B8 227 E3

13 0D 56 38 99 63 142 8E 185 B9 228 E4

14 0E 57 39 100 64 143 8F 186 BA 229 E5

15 0F 58 3A 101 65 144 90 187 BB 230 E6

16 10 59 3B 102 66 145 91 188 BC 231 E7

17 11 60 3C 103 67 146 92 189 BD 232 E8

18 12 61 3D 104 68 147 93 190 BE 233 E9

19 13 62 3E 105 69 148 94 191 BF 234 EA

20 14 63 3F 106 6A 149 95 192 C0 235 EB

21 15 64 40 107 6B 150 96 193 C1 236 EC

22 16 65 41 108 6C 151 97 194 C2 237 ED

23 17 66 42 109 6D 152 98 195 C3 238 EE

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Siemens MD-BMS, MD-BMED User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual