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ManualsBrandsSiemens ManualsBuilding automationMD-3HD, MD-12HD, MD-24HD and MD-48HD Networked Multi-Circuit Power Metering Systems User Guide

Technical Specification Sheet

Document No. A6V12412376

April 27, 2021

Siemens Industry, Inc.

Page 1 of 9

MD-24HD Networked Multi-Circuit

Power Metering System, 24-Channel

Description

MAXIMUM FLEXIBILITY FOR MONITORING

The MD-24HD is a versatile, multi-channel electrical

metering instrument, used for monitoring up to 48

electrical circuits. It uses any of the existing MD series

internally-shunted, 333 mV output split-core or

Rogowski Coil current transformers (CTs). Monitor any

combination of up to 16 three-phase or 24 single-

phase electrical devices with a single meter. With over

100 data registers, data updates every second and

ANSI C12.20-2010 Class 0.2 revenue grade accuracy,

the MD-24HD is well-suited for data center monitoring,

tenant submetering, and accountability metering in

commercial, retail, and industrial facilities.

INDUSTRY-STANDARD BACNET OR MODBUS

The MD-24HD supports both BACnet protocol and

Modbus protocol (based on SunSpec IEEE-754

floating point model). Communications interface can

be accomplished through standard serial RS-485 or

Ethernet using either BACnet MS/TP, Modbus RTU,

BACnet IP or Modbus TCP protocols. Additionally, the

MD-24HD features two pulse inputs.

EASY INSTALLATION

This meter is line-powered and designed to operate on

any voltage from 90 to 600 Vac. Unique to the

MD-24HD are two independent voltage inputs,

allowing for the monitoring of customer-derived voltage

networks. BACnet and Modbus protocols are field-

selectable and any combination of split-core or flexible

Rogowski Coil (RōCoil™) CTs can be used. Configure

the meter prior to installation using the free

ViewPoint™ HD software utility and a direct USB

connection or by using the built-in web server.

PhaseChek™ technology ensures proper CT-to-phase

installation the first time, eliminating installation errors.

MD-24HD-C-D-N Networked Metering System

with Enclosure and Display

Applications

• Real-time Power Monitoring in Commercial, Retail

and Industrial environments.

• Data Centers

• Bi-Directional Metering such as Solar Power or

Co-Generation applications

• Cost allocation and tenant submetering

Key Features

Electrical Metering Features

• 24 channels: Multi-circuit submeter monitors

voltage, current, power, energy, and many other

electrical parameters on any combination of single

and/or three-phase systems.

• Two independent voltage inputs allow the

MD-24HD meter to be used on two systems

simultaneously. CTs can be independently

mapped to either voltage input.

• Line-Powered: 90 to 600V phase-to-phase power

supply

• Revenue grade; ANSI C12.20-2010 Class 0.2

Summary of content (9 pages)

PAGE 1
Technical Specification Sheet Document No. A6V12412376 April 27, 2021 MD-24HD Networked Multi-Circuit Power Metering System, 24-Channel Description MAXIMUM FLEXIBILITY FOR MONITORING The MD-24HD is a versatile, multi-channel electrical metering instrument, used for monitoring up to 48 electrical circuits. It uses any of the existing MD series internally-shunted, 333 mV output split-core or Rogowski Coil current transformers (CTs).
PAGE 2
• Available with UL 94-V0 enclosure or as a circuit board on a mounting plate that helps facilitate easy, safe installation. A separate high-voltage cover offers an additional level of protection. • Meter display option provides real-time information about the meter configuration and metered data. • Mix-and-match a full range of Split Core or Rogowski Coil CTs, including several revenuegrade, high accuracy CT options. PhaseChek™ confirms proper current transformer orientation.
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Power Meter Components MD-24HD Internal Diagram 1. Pulse Input 1 2. Pulse Input 2 3. Ethernet 4. USB 5. 12 Vdc output (2W) 6. RS-485 7. Alarm Output 8. CT Connections (x48) 9. Backlit display 10. Navigation buttons 11. Voltage Input 1 12. Voltage Input 2 15. 1” EMT Conduit Connections (x6) 16. ABS Plastic Enclosure MD-24HD-C-D-N (Inside) Siemens Industry, Inc.
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Specifications Technical Communications Mechanical Page 4 of 9 Service Types Single Phase, Split Phase, Three Phase-Four Wire (WYE), Three Phase-Three Wire (Delta). Meter Power From L1 Phase to L2 Phase. 90-600 Vac RMS CAT III 50/60Hz, 500 mA AC Max. Use of 12-volt auxiliary output requires 100 Vac minimum input voltage. AC Protection 0.5A Fuse, 200kA interrupt capacity Power Out Unregulated 12 Vdc output, 200 mA, self-resetting fuse.
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ViewPoint Operating system Windows® 10, Windows® 8, Windows® 7 Software Communications USB and Ethernet standard. One USB Port required on PC. Security 2 levels of PIN protection (Read/Write or Read-Only) Free ViewPoint Download Link See ViewPoint chapter of User Manual UL Recognized (E186827) Applies to mounting plate version MD-48HD-P-x-N Conforms to UL Std 61010-1 3rd Edition Certified to CSA Std C22.2 No.
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Dimensions MD-24HD-C-D-N Dimensions in Millimeters. Page 6 of 9 Siemens Industry, Inc.
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1 BACnet Protocol Implementation Conformance Statement Products Product 1 Siemens MD-24HD Power Meters Model Numbers 12 MD-24HD-C-D-N Protocol Revision Revision 14 Vendor Information Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Parkway Buffalo Grove, IL 60089 www.buildingtechnologies.siemens.com/bt/us Product Description Three phase ANSI C12.20-2010 Class 0.2 revenue grade power meter. Supports BACnet MS/TP, BACnet/IP, Modbus RTU, and Modbus TCP communication protocols.
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Standard Object Types Supported: Device Object Optional Properties Writable Properties Property Range Restrictions Object_Identifier < 4194304 Description Description 32 character maximum Location Location 32 character maximum Max_Master Max_Master 1-127 Max_Info_Frames Max_Info_Frames >= 1 Object Name 32 character maximum Writable Properties Property Range Restrictions Writable Properties Property Range Restrictions Present_Value Varies by object Writable Properties Property Range
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Structured View Optional Properties Writable Properties Property Range Restrictions Object Name 32 character maximum Data Link Layer Options Product Options BACnet Energy Meter BACnet IP, (Annex J), Foreign Device MS/TP master (Clause 9), baud rate(s): 9600, 19200, 38400, 57600, 76800, 115200 Device Address Binding Is static device binding supported? (This is currently necessary for two-way communication with MS/TP slaves and certain other devices.