Dent Instruments PS48HD-P-D-N, PS12HD-B-D-N, PS12HD-C-N-N, PS12HD-B-N-N, PS48HD-C-D-N User manual

Operator’s Guide

PowerScout™12 HD
PowerScout™48 HD

Networked Metering Systems

and

ViewPoint™ HD

Software

June 2017

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Table of Contents

DENT Instruments

TABLE OF CONTENTS

Table of Contents ................................................................................................................ iii

Introduction ......................................................................................................................... 5

Unpacking the Unit .......................................................................................................................... 5

PSHD Anatomy ................................................................................................................................. 6

PowerScout HD Meter Safety Summary and Specifications ............................................................ 7

Symbols on Equipment .................................................................................................................... 7

Symbols in Documentation .............................................................................................................. 7

Meter SAFETY ...................................................................................................................... 9

Planning For Field Installation ............................................................................................ 10

Project Manager Aspects ............................................................................................................... 10

Configuration & Data Viewing Options ................................................................................... 10

Information Access by Interface Type ..................................................................................... 11

Meter Configuration Overview ...................................................................................................... 12

Meter Installation Overview ......................................................................................................... 12

Verification & Communication Overview ...................................................................................... 13

RTU Programming and Scripting Overview .................................................................................... 13

Meter Configuration .......................................................................................................... 14

Install the Software ........................................................................................................................ 14

Connect the Meter using USB (Power & Communications) .......................................................... 14

Alternate Connection .............................................................................................................. 15

ViewPoint HD Software Overview ................................................................................................. 16

ViewPoint HD Documentation ....................................................................................................... 17

ViewPoint HD Documentation—Instructional Videos ................................................................... 18

Configuring Electrical Components using ViewPoint HD ............................................................... 19

Configuring Communications using Viewpoint HD ........................................................................ 20

Meter Installation .............................................................................................................. 21

Meter Mounting Configurations .................................................................................................... 21

Installation Sequence .............................................................................................................. 22

Connecting Voltage ................................................................................................................. 24

Wiring the PSHD Meter in a 3-wire, Split ɸ Service Panel ............................................................. 25

Wiring the PSHD Meter in a 4-wire, 3 ɸ Service Panel .................................................................. 26

Wiring CTs ...................................................................................................................................... 27

Wiring the CTs to the PSHD Meter ................................................................................................ 28

Communication & Verification ........................................................................................... 29

Physical Connections on an RS-485 Multidrop Network ............................................................... 29

Serial Protocols .............................................................................................................................. 30

Modbus.................................................................................................................................... 30

BACnet ..................................................................................................................................... 31

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Connections on a LAN Ethernet Network ............................................................................... 31

DHCP ........................................................................................................................................ 31

STATIC IP .................................................................................................................................. 31

Pulse Outputs .......................................................................................................................... 32

Open Collector Output ............................................................................................................ 32

12 Volt Auxiliary Power ........................................................................................................... 32

Security PIN Protection ........................................................................................................... 33

Verification ..................................................................................................................................... 34

CT Orientation Check ............................................................................................................... 34

Phase Checking ........................................................................................................................ 35

RTU Programming and Scripting .................................................................................................... 36

Register Organization .............................................................................................................. 36

Element vs System Scope ........................................................................................................ 36

Modbus Protocol Commands .................................................................................................. 39

BACnet ..................................................................................................................................... 40

Appendix A—PSHD LCD Menu Navigation .......................................................................... 41

Appendix B—Enclosure Dimensions ................................................................................... 42

Appendix C—Mounting Templates ..................................................................................... 43

Appendix E—PSHD Technical Specifications ....................................................................... 46

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INTRODUCTION

There are two meters in the PowerScout HD Series: the PS12HD and the PS48HD. These meters monitor
the voltage, current, power, energy, and many other electrical parameters on single and three-phase
electrical systems. A PSHD meter uses direct connections to each phase of the voltage, and uses current
transformers to monitor each phase of the current. Information on energy use, demand, power factor,
line frequency, and more are derived from these voltage and current inputs.

The PSHD meter is not meant to be a standalone energy recorder, rather it is connected as a slave
device to a data logger, Remote Terminal Unit (RTU), or Building Management host network. The PSHD
meter communication interfaces include Ethernet (LAN), RS-485 serial with WIFI under development.
The protocols supported by the meter include BACnet Master Slave Token Passing (MS/TP) or Modbus
RTU protocol for sending commands and retrieving data. A USB port is also provided as the preferred
connection for on-site configuration and can be run concurrently with an RTU.

Unpacking the Unit

The PSHD can be ordered with optional product features which are identifiable on the part number
label.

Figure 1: PowerScout HD Part Numbering Scheme

Each PSHD meter shipment also includes the following items:

 Meter with Options Installed – Serial Number, MAC ID, and FCC ID indicated on side label.
 Pluggable Connectors (2 voltage, 50 three-position terminals, 3 two-position terminals)
 Thumb drive containing ViewPoint HD Software, Register List, Manual, Tutorial Videos
 COC (Certificate of Calibration) for each unit

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Introduction

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PSHD Anatomy

All user connections are made on the circuit board. Connectors are identified by function and polarity
markers.

PS12HD

PS48HD

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Introduction

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PS48HD-C-y-z

with NEC and local electrical codes.

PowerScout HD Meter Safety Summary and Specifications

The PSHD Family conform to the
following:

This general safety information is to
be used by both the Logger operator
and servicing personnel. DENT
Instruments, Inc. assumes no
liability for user’s failure to comply
with these safety guidelines.

PowerScout HD devices need to be installed in a user-supplied UL Listed/ uR Recognized enclosure in order to comply

The PowerScout HD is an Over-Voltage Category III device. Use approved protection when operating the device.

PS12HD-B-y-z, PS12HD-P-y-z

PS48HD-B-y-z, PS48HD-P-y-z

PS12HD-C-y-z

PowerScout HD Series:

Conforms to UL Std 61010-1, 3rd
Edition

Certified to CSA Std C22.2 No.

61010-1, 3rd Edition

CAUTION: THIS METER MAY CONTAIN LIFE THREATENING VOLTAGES. QUALIFIED PERSONNEL MUST DISCONNECT

ALL HIGH VOLTAGE WIRING BEFORE SERVICING THE METER WITH THE HIGH VOLTAGE TOUCH SAFE
COVER REMOVED.

Symbols on Equipment

Denotes caution. See manual for a description of the meanings.

DENOTES HIGH VOLTAGE. RISK OF ELECTRICAL SHOCK. LIFE THREATENING VOLTAGES MAY BE PRESENT.
QUALIFIED PERSONNEL ONLY.

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

Symbols in Documentation

Contains additional information pertinent to current subject

DO NOT EXCEED 346V Line to Neutral or 600 volts Line to Line. This meter is equipped to
monitor loads up to 346V L-N. Exceeding this voltage will cause damage to the meter and
danger to the user. Always use a Potential Transformer (PT) for voltages in excess of 346V L­N or 600 volts line to line. The PowerScout HD is a 600 Volt Over Voltage Category III device.

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METER SAFETY

Building Service Safety Requirements (Load Center, etc.)

Equipment intended for use with field-installed current transformers that could be installed in panel boards or
switchgears shall observe the following:

A. Always open or disconnect circuit from power-distribution system (or service) of building

before installing or servicing current transformers.

B. A circuit breaker used as a disconnect must meet the requirements of IEC 60947-1 and IEC

60947-3 (Clause 6.11.4.2)

C. Current transformers may not be installed in equipment where they exceed 75 percent of the

wiring space of any cross-sectional area within the equipment.

D. Current transformers may not be installed in an area where they block ventilation openings.
E. Current transformers may not be installed in an area of breaker arc venting.
F. Not suitable for Class 2 wiring method nor intended for connection to Class 2 equipment.
G. Secure current transformer and route conductors so that they do not directly contact live

terminals or bus.

H. CTs shall be listed to UL2808

Meter Installation Safety Requirements

A. PSHD
B. Use copper conductors only.
C. Connection to the mains terminals shall be made with 14 AWG minimum wire gauge.
D. External secondary inputs and outputs should be connected to devices meeting the

E. The following additional requirements apply for Recognized board versions of the PSHD meter

meters must be installed in accordance with local electrical codes.

requirements of IEC 60950

1) For use only with Listed Energy-monitoring Current Transformers

2) Associated leads of the current transformers shall be maintained within the same overall

enclosure.

3) Unless the current transformers and its leads have been evaluated for REINFORCED

INSULATION, the leads must be segregated or insulated from different circuits.

4) The current transformers are intended for installation within the same enclosure as the

equipment. These may not be installed within switchgears and panel boards” or similar.

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PLANNING FOR FIELD INSTALLATION

Project Manager Aspects

Meter installation often includes coordination between individuals or groups of people with
different responsibilities. Spend a few minutes considering who will be executing each portion
of the installation and what tools are needed at each stage. These include determining how to
communicate with the meter, setting address configuration, installing ViewPoint HD, access to
passwords, etc. The more tasks completed before installation means less time in the field. The
following section gives an overview of these activities followed by details in the next section.

CONFIGURATION & DATA VIEWING OPTIONS

The PowerScout HD meter has three methods for configuration and data viewing. The most
powerful interface is provided with a PC, Laptop or Tablet running Windows and is encouraged
for complex installations. The second interface is intended for smart phones or tablets that can
connect over USB, Ethernet, or WiFi. The third interface (LCD) is intended for intermittent end
user observation and is restricted in capability. The RTU can also be used for configuration if
communication settings are already established. The feature set of each interface is
summarized below:

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Planning for Field Installation

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Real Time Values
Configuration

Security PINs

Enforced

INFORMATION ACCESS BY INTERFACE TYPE

DENT Interface Options Customer

RTU

PC, Laptop, or

Tablet running

Device

ViewPoint HD

Smart Device or Tablet

via

WebPage

LCD on Meter

(if equipped)

(Host System)

Modbus /BACnet

Meter Setup

Used

When

Field Visit

All Meter Parameters

Waveform Capture

Harmonic Analysis

All Element View

Phasor Plot

Entire Meter

Visual Guides

Copy / Paste

Factory Support – Level 3

Field Visit End User

All Meter Parameters

Multi Element View

Entire Meter

Text Based

Read Only – Level 1*

Read / Write – Level 2*

Communications Only

(limited to communication)

Voltage

Current

VA

VAR

kWh

Single Element View

Read Only – Level 1*

Read / Write Level 2*

Factory Support – Level 3

Building

System

All Meter Parameters

Entire Meter

Register Based

** If PINs are configured

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Meter Configuration Overview

 Work performed ahead of the installation saves time in the field and results in fewer

mistakes!

Tools Typical Work

• Desktop or Laptop PC

• USB Type AB Cable (preferred) or

Ethernet & USB wall charger (> 500 mA)

• Thumb Drive (ViewPoint HD Installer) or

access to

https://www.dentinstruments.com/software­downloads

• Electrical Schematics of project

Meter Installation Overview

 Performed by licensed electrician.

Tools Typical Work

• Installation of ViewPoint HD Software

• Connect USB/Ethernet cable from PC to

meter

• Establish communication with meter

• Firmware update (if desired)

• Configure software for anticipated meter

setup

• Field wiring documentation

• Mounting hardware (customer supplied)

• Wiring & supplies, labels, wire ties

• Tablet, Smart Device, or

Laptop PC

• Multi Meter, Current Clamp

• Camera

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• Mechanical mounting

• Electrical installation

• Install voltage cover

• Apply power to meter

• Confirm basic operation of meter

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Planning for Field Installation

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Verification & Communication Overview

 Can be modified with power applied to the meter.

Tools Typical Work

• Tablet, Smart Device (Web Page Based), or

Laptop PC (Viewpoint HD Software)

• On site trouble shooting

• Multi Meter, Current Clamp

• Camera

RTU Programming and Scripting Overview

• Locate the power meter

• Confirm RTU device

• Add wire terminations (if required)

• Confirm meter communication settings

• Meter health metrics (check for setup

errors)

• Analytics (Viewpoint HD)

• Correct instrumentation

• Set security PINs

• Checklist

Tools Typical Work

• Laptop PC (Remote Access to RTU)

• Remote trouble shooting

• Register List

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• Confirm meter communication settings

• Confirm communication protocols

• Exercise remote connectivity

• Run configuration scripting

• Confirm data integrity

13

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METER CONFIGURATION - DETAILS

This section is written to support setting up the PSHD in an office environment and
configuring the power meter for a pre-determined configuration. In many cases the
setup is standardized for an organization or project. In other cases, the setup can be
documented and forwarded to an electrician as a wiring schedule. The setup can also
be performed on site and reflect “as built” configurations.

Install the Software

 Insert the ViewPoint HD thumb drive into the computer or download from

http://dentinstruments.com/software-downloads

The installer should start automatically. If it does not, browse the thumb drive and locate the
ViewPointInstaller.exe program. Start the installer by double-clicking ViewPointInstaller.exe and follow
the installer instructions.

Connect the Meter using USB (Power & Communications)

Figure 2: Preferred Connection via USB AB Cable

The preferred method for configuring the PSHD meter from a locally connected computer is through the
USB interface which provides power to the meter as well as communications. The meter will draw
500mA from the USB port which may overload “out of spec” USB hosts, if the meter fails to power from
USB then the alternate method (described below) must be used.

F. Plug the meter into the USB port (DENT Instruments will appear on the LCD (if equipped)).
G. Launch the ViewPoint HD application and press the “CONNECT USING USB” button on the

pop-up window.

The meter should now be communicating. Viewpoint HD is an intuitive application, read the Viewpoint
HD overview section (below) or watch the tutorial videos for additional information on configuring the
meter.

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Meter Configuration

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ALTERNATE CONNECTION

If configuration using USB is not available, the Ethernet connection can also be used provided the meter
can be powered from a voltage source such as a customer-supplied USB wall charger (>500mA) or from
AC power if the meter is already installed.

Figure 3: Alternate Connection

H. Connect the meter to an Ethernet LAN Router running a DNS Server.
I. Apply power to the meter.
J. Observe the IP address displayed on the LCD screen (Splash Screen) or navigate to About Meter

using the meter push button interface (see Appendix A).

You may also connect directly to a Laptop or Desktop PC but your IP Address and Subnet must
match the meter to connect to it (summarized below).

K. Launch the ViewPoint HD application and press the “CONNECT USING ETHERNET” button on the

pop up window.

The meter should now be communicating. Viewpoint HD is an intuitive application; read the
Viewpoint HD overview section (below) and/or watch the tutorial videos on the DENT website for
additional information on configuring the meter.

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Meter Configuration

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Display Data

ViewPoint HD Software Overview

ViewPoint HD is a Windows application and is the most versatile software tool for configuring and
verifying a PSHD meter. All functions and menus are accessed under the central drop-down list which

has a content
troubleshooting. The information displayed in the drop-down list for each filter setting is summarized

below.

Real Time Values

filter for viewing basic metering data or extended data that can be helpful in

Real Time Values

Meter Setup

Power

Energy

Demand

Communication Setup

Connect to Meter

Advanced

About the Meter

Meter Setup

Communication Setup

Power

Energy

Demand

Power Factor

Waveform Capture

Harmonics

Connect to Meter

Advanced

About the Meter

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Meter Configuration

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ViewPoint HD Documentation

ViewPoint HD is an intuitive and self-describing interface that uses context help to facilitate rapid and
accurate configuration via the configuration aids described below.

Help Aids

Information

CT Type

Service Type

Wiring Diagrams

This button toggles the context pop-up window which
displays the technical description of the parameter or
the register number associated with the reported
value. The window is resizable and movable.

Current Transformer models are selected in the
drop-down list and are identified by a combination of
a CT image and the product ratings.

The parameters for the selected CT are automatically
populated. This information can be edited for custom
use.

Select a service type from the drop-down list. A
selection populates the fields with pre-configured
service type information. User-selectable fields are
shown in white. Greyed out fields indicate restrictions
imposed by the meter.

Diagrams of different wiring configurations, such as
illustrated here, are available directly within the
software for quick reference.

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Meter Configuration

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Configuring Electrical Components using ViewPoint HD

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Meter Configuration

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Configuring Communications using Viewpoint HD

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Mounting Options

PS48 HD

PS12 HD

METER INSTALLATION - DETAILS

This section is intended to support the physical installation of the meter and
provide guidance on connecting the current transformers (CTs) correctly within
the electrical load center and to the PSHD meter.

Meter Mounting Configurations

DENT PowerScout HDMS meters are sold in several form factors. Enclosures are designed to be wall
mounted and connected to electrical conduit. Plate mounted versions are ready to be mounted inside a
customer supplied NEMA enclosure and offer IP20 protection. RAW pcba’s need to be mounted on
customer-provided stand offs (0.5” in length or longer) and mounted in a NEMA-rated enclosure. Care
should be taken not to flex the circuit board during mounting.

Enclosure

OEM Plate

RAW PCBA

Special Order

Not Yet Available

Special Order

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#8 Fastener

Meter Installation

INSTALLATION SEQUENCE

STEP 1) Remove top cover screws (4x) and high voltage cover screws (2x) – provided

STEP 2) Locate, mark, and drill wall mounting points (2x–6x—customer supplied)

The plastic enclosure itself can be used as a template for marking the drill locations on the wall.

If the meter is not available for use as a drill template a drawing indicating the spacing between
mounting holes can be found in the appendix. The centerline holes are intended for fastening to wall
studs. If hollow wall fasteners are used the outer 4 mounting points are recommended.

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STEP 3) Mount conduit fittings, conduits, and blanking plugs

STEP 4) Connect voltage leads

Meter Installation

DO NOT ENERGIZE METER WITH VOLTAGE COVER REMOVED

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IP30

TOUCH SAFE (with internal cover installed)

STEP 5) Attach high voltage cover

STEP 6) Connect CT and Communications Wiring

Meter Installation

CONNECTING VOLTAGE

Connect the voltage leads (L1, L2, L3, and N, as necessary) to the meter through a dedicated disconnect
or circuit breaker. A voltage lead of 14 AWG THHN Minimum 600VAC rating (or equivalent) is required.

IMPORTANT: Verify the circuit breaker is marked as the disconnect breaker for the meter.

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L1-L2

Meter Installation

Wiring the PSHD Meter in a 3-wire, Split ɸ Service Panel

High voltage MAY BE PRESENT. Risk of electric shock. Life threatening voltages may be present.
Qualified personnel only.

3-Wire, 1 Phase used

On MAINS

L1-N, L2-N

(RōCoils Shown)

Single Phase

110 VAC Plug Loads

L1-N or L2-N

Figure 4: Illustrating the intended wiring configuration for each of the Service Types

EXAMPLE LOADS:

available in the Service drop-down list under “Meter Setup”

Connect the

Neutral wire to

V INPUT 1 (N) on

the PSHD meter

Meter is powered

from L1 to L2 on

the V Input 1

terminal

(Label as Disconnect))

Single Phase

220 VAC Plug Load

3-Wire, 1 Phase

Split Load

L1-N, L2-N

Single Phase L1-N or L2-N 110 VAC : Lighting, Appliance, Living Zone

Single Phase L1–L2 220 VAC : Water Heater, Clothes Dryer, Equipment with no neutral wire.

Split Phase L1–L2 220 VAC : Service Entrance, Equipment with neutral wire.

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L1-N

Wiring the PSHD Meter in a 4-wire, 3 ɸ Service Panel

3 Wire, 3 ɸ used

On MAINS

L1-N, L2-N, L3-N

(RōCoils Shown)

Meter Installation

Connect the

Neutral wire

or Ground wire to

V INPUT 1 (N) on

the PSHD meter

Single Phase

Branch Loads

4 Wire, 3 ɸ

WYE load

(Neutral Current)

L1-N, L2-N, L3-N

Figure 5: Illustrating the intended wiring configuration for each of the Service Types

Note: The PSHD Meter Series uses the “Neutral” terminal as a voltage reference. For
systems without a neutral conductor DENT Instruments suggests connecting a ground
wire to this terminal. If the Neutral terminal is left open L-L measurements will be
accurate but L-N measurements may not be symmetric. If a ground wire is connected
to the Neutral terminal < 2 mA will flow into the ground wire.

available in the Service drop-down list under “Meter Setup”

Meter Power

Connect all phases

to the V INPUT 1

terminal

(Label as Disconnect)

3-Wire, 3 ɸ

DELTA load

(No possibility of

Neutral Current)

L1-N, L2-N(est), L3-N

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Black: Negative

Brown: Negative

Wiring CTs

Ensure CTs meet the following criteria:

 600 VAC UL Rated
 UL2808 Listed
 1/3 (333 mV) output voltage
 Appropriate range for the circuit (5-120% of CT Rating

Recommended)

 Read the label

Ensure CT orientation & placement:

 Arrow points toward load (or as instructed by CT label)
 Arrow points away from Panel (or as instructed by CT label)
 Placed on First Conductor of voltage Reference (L1-L2) circuits are

placed on L1

 Observe wiring color and polarity
 Use the Shield wire if provided (connect to PCB terminal marked S)

Meter Installation

Wiring Guide for CT Types

Split, Hinged, & Solid Core CTs

White: Positive

(no shield)

RōCoil CTs

White: Positive

Bare Wire: Shield

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Meter Installation

Wiring the CTs to the PSHD Meter

The image below is the counter part to the service panel illustration and indicates how to connect CTs to
the HDMS meter for each

recommended to choose “single phase” service and configure each channel individually. Three
phase loads are illustrated on the left and split phase loads on the right as an example only.
Elements are fully interchangeable on the meter.

service type. For service types that are not specifically listed it is

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Figure 6: 2-Wire Multidrop Network using Terminating Resistors

COMMUNICATION & VERIFICATION - DETAILS

This section is intended to support the commissioning of the PSHD meter by an
instrumentation technician. In many cases the electrical installation is conducted
ahead of the availability of the RTU or was performed by a different installer. Often
the technician is working in concert with a remote programmer who is confirming
the connectivity with a remote host system. A Digital Multi Meter (DMM) can be
used to confirm measurements at the board terminals if necessary.

It is assumed that the meter is now powered up from line voltage. It is safe to
touch the meter (including the user buttons) with the top cover removed
ONLY IF THE INTERNAL HIGH VOLTAGE COVER IS INSTALLED!

Communications settings, and spot checking real time data values can be confirmed quickly
using the LCD interface. If significant setup modifications are anticipated a computer interface
is recommended.

Physical Connections on an RS-485 Multidrop Network

The PSHD meter uses a 2-Wire Half Duplex RS-485 Implementation.

 Termination Resistors—are NOT included on the PSHD meter. If the PSHD meter is at

the end of a daisy-chain, then connect a 120-ohm leaded resistor between the + and –
terminal at the connector.

 Bias Resistors—are NOT included on the PSHD meter. Bias resistors are needed If the

idle conditions of the bus are in an indeterminant logic voltage. Bias resistors are usually
located at the master node.

 Network Topology—RS-485 is designed to be implemented as a daisy chain (series

connections) rather than star or cascade topologies.

 Signal Names—Some RS-485 devices use the terminology A/B while others use +/-. Note

that A is (-) and B is (+). Many manufacturers incorrectly label the terminals.

 Bus Loading—The PSHD meter is a 1/8

parallel.

th

unit load allowing up to 256 like devices in

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Communication & Verification

Serial Protocols

BACnet MS/TP and Modbus RTU are standard communication protocols that allow for communication
between a client and multiple devices connected to the same network. RS-485 is the hardware’s
physical interface while BACnet or Modbus is the networking protocol.

M

ODBUS

In a Modbus network each device must be assigned a unique slave Address. The SLAVE Address sets the
register address for ELEMENT A. Adjacent elements B, C, D, etc. are accessed by incrementing the
SLAVE ID by 1.

1) Confirm or set the slave Address using ViewPoint HD, Web Page, or LCD Interface
A. ViewPoint HD: Communication Setup > Retrieve Setup from Meter: Modbus Address
B. WebPage: Communication Setup > Retrieve Setup from Meter: Modbus Address
C. LCD: Communications Serial Settings

2) Confirm or set the Serial Data Format using ViewPoint HD, Web Page, or LCD Interface
A. ViewPoint HD: Communication Setup > Retrieve Setup from Meter: Settings
B. WebPage: Communication Setup > Retrieve Setup from Meter: Settings
C. LCD: Communications > Serial Settings

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Communication & Verification

BACNET

In a BACnet network each device must be assigned a unique Device ID. In BACnet Object Instances are
located using a “hotel floor” scheme with elements spaced 10,000 addresses apart.

0-9999 Element A / System

10000-19999 Element B

20000-29999 Element C

…

150000-159999 Element P

1) Confirm or set the Device ID using ViewPoint HD, Web Page, or LCD Interface

A. ViewPoint HD: Communication Setup > Retrieve Setup from Meter: [Device ID]
B. WebPage: Communication Setup > Retrieve Setup from Meter: [Device ID]
C. LCD: Communications > Serial Settings

2) Confirm or set the Serial Data Format using ViewPoint HD, Web Page, or LCD Interface

A. ViewPoint HD: Communication Setup > Retrieve Setup from Meter
B. WebPage: Communication Setup > Retrieve Setup from Meter
C. LCD: Communications > Serial Settings

CONNECTIONS ON A LAN ETHERNET NETWORK

The PSHD meter uses IEEE 802.3 Ethernet connectivity running at a 10/100 Mbps. Ethernet networks are
limited by the number of available IP addresses for both Ethernet Modbus and BACnet meters.

DHCP

If the PSHD meter is configured for Dynamic Host Configuration Protocol (DHCP) when the meter is
powered on or the Ethernet cable is inserted the meter is assigned an IP address by the DHCP server.
This address appears on the meter LCD or can be found through connection with ViewPoint or the
Webpage. The IP address assigned to the meter should be regarded as a temporary address as the
address may change between power cycles, making it difficult for the host system to know how to find
the meter on the network.

STATIC IP

If the PSHD meter is set to a static IP then its internet address is fixed. I.P. addresses should be assigned
by an IT department to avoid multiple devices on the same network. This scheme is usually used when
an RTU is expecting to find the meter at a specific IP address. The address can be changed in ViewPoint
HD>Communication Setup or through registers.

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Communication & Verification

PULSE OUTPUTS

Pulse outputs are available to export energy consumption data to
generic accumulators that cannot communicate using a data
interface. For example: this interface could be used by a data
aggregator that is measuring natural gas and electricity.

The PS48HD meter has two pulse outputs that can be configured
to report the energy on any element. The output will “toggle”
every time the energy has reached a threshold value. This value
is computed based on the meter configuration and reported as a
read only register (see the register list Excel file).

OPEN COLLECTOR OUTPUT

The pulse output is electrically isolated from the meter power supply and requires the user to connect a
voltage source (5–30 VDC), a ground wire (connected to the host ground), and a pullup resistor. A 10K
resistor is the recommended value.

Figure 7: Output Connections

12 VOLT AUXILIARY POWER

The PSHD meter provides an auxiliary 12 volt, 200 ma output that is designed to power wireless
communication devices or sensors. The output is unregulated and protected by a self-resetting fuse. If
full rated current is drawn from this terminal the minimum operating voltage of the L1-L2 power supply
increase from 90 VAC to 100 VAC.

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SECURITY PIN PROTECTION

The PS48HD has three levels of PIN protection that users can choose to assign for restricting access to
meter information. The default meter configuration is none. PINs are 4 digits and are stored as a user
setting in the non-volatile memory of the meter. PINs are also accessible as registers but are encoded so
that reading the value of the register through an RTU does not inform a user what the password is. This
feature allows DENT Instruments to support looking up forgotten PINs if network access is available.

Access Restriction Limitations

If security levels have been set up in the meter no data is accessible through the LCD user interface or
web page without entering the PIN credentials. Note however that protocols such as Modbus do NOT
SUPPORT ANY LEVEL OF security such that any network traffic acting as a master can retrieve and write
data from the registers. Generally, this will require knowledge of the IP address or slave ID and the
register list which discourages casual intrusion. Factory level registers cannot be over-written by the RTU
without a factory PIN.

ViewPoint HD

The ViewPoint HD software tool can be used to read & write configuration to the meter without
entering credentials. Factory level registers cannot be accessed without a factory PIN.

Read Only

Read only permissions allow users to read data or configuration items but not make any changes. This
level of authorization might be appropriate for general end users such as building owners.

 ViewPoint HD: (set or changed in advanced tab)
 WebPage: (set or changed in advanced tab)
 LCD: (user mode only, cannot change from this interface)

Read/Write

Read/Write permissions allow users to read and write configuration items and to set new passwords.
This level of authorization will be required by any technician of user who needs the ability to correct
setup errors in the meter.

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Communication & Verification

Verification

Once the PSHD meter is configured and operating it is a good idea to perform some simple checks to
ensure that all the CTs are on the correct voltage phases and that the CTs are facing the correct
direction. The following are recommendations that work for typical installations. Special circuit
conditions like unloaded motors may indicate an installation error when none exists. A Digital
Multimeter (DMM) can be used to confirm RMS and VA values.

CT ORIENTATION CHECK

The PSHD meter reports power and energy in each electrical quadrant under a different register. When
CTs are installed backwards the indicated current vector is oriented 180 degrees away from the true
displacement angle. In accordance with standard definitions the Wattage and VARs of the effected
channel report with a sign opposite from what is expected. Often this means that the import registers
will be reading zero while the export registers are showing a value. Note that backward CTs have no
impact on the amplitude of the Power Factor. A moderate power factor (>0.7) in concert with a negative
power is a clue that the CT is on backwards but is on the correct phase.

I Ref (Indicated)

Figure 8: Electrical Power Quadrants with Reversed CT shown

Check that the wattage has the correct sign (Designated + for loads)

 ViewPoint HD: Real Time Values > (Confirm Sign of Power For All Elements)
 WebPage: Real Time Values > (Confirm Sign of Power For All Elements)
 LCD: Real Time Values > (Confirm Sign of Power for Each Element)

If a CT is discovered to be on backwards after the installation is complete the direction of the
CT can be reversed through a user configuration register designed for this purpose called the
“Flipper” located at 2226,2235, and 2234.

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PHASE CHECKING

When a CT is installed on the incorrect phase the indicated current vector is pointing either 180 degrees
away (a split phase system) or 120 degrees away (a three-phase system) from the true displacement
angle. This usually causes the significant decrease in the loads reported power factor. When the
absolute power factor of a load is below 0.55 the PSHD meter will flag it as phasing error.

Check for Low Power Factor

 ViewPoint HD: Real Time Values > (All power factors < 0.55 are shown in RED)
 WebPage: Real Time Values > (All power factors < 0.55 are shown in RED)
 LCD: Verify Installation > (LCD will list all elements having a PF < 0.55)

Figure 9: Electrical Power Quadrants with Incorrect CT Phase shown

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RTU Programming and Scripting - DETAILS

This section is intended for the programmer of the RTU or host system and includes
details about meter and element addressing, register locations, data formats and
protocol examples.

REGISTER ORGANIZATION

The PSHD meter communicates through the reading and writing of registers. Registers are organized
into functional groups and are compliant with the SunSpec Modbus interface model.

 SunSpec Common Registers
 SunSpec TCP Network Stack Registers
 SunSpec Serial Interface Registers
 SunSpec Energy Meter
 DENT Factory Registers
 DENT User Command Registers
 DENT User Configuration Registers
 DENT Metrology Registers
 DENT Daughter Card Registers
 DENT Waveform Capture Registers

The complete register set is included as an excel file on the supplied thumb drive or at

https://www.dentinstruments.com/software-downloads

ELEMENT VS SYSTEM SCOPE

Element

When reading the value of a register the scope is defined as belonging to an “Element” if each Modbus
Slave Address (or BACnet object instance) contains a unique value. Physically speaking elements are
grouped into sets of threes and given alphabetic assignments {A, B, C, etc). and are marked on the silk
screen of the circuit board. Registers that contain data inclusive of more than one channel are identified
as being either SUMS or AVERAGES of the enabled channels within an element.

Channel

Channels are identified on the circuit board as CH1, CH2, or CH3 and represent physical CT inputs. In
three phase system configurations, these correspond to a current load on a corresponding line voltage.
In single phase configurations, they are just used to identify a CT location. Registers providing data for
an individual channel are also described as elements in their scope as a unique value exists for each
Slave Address or BACnet object instance.

System

The term “System” refers to registers defining the characteristics of the entire circuit board, system
registers report the same value independent of the slave address.

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REGISTER TEMPLATE

Service Type

2207

V_Input

2217

Description

2617

Channels

Volt Ref

CT Type

Range

Phase Shift

CT Multiplier

CT Sign

CH1

2220

2223

2224,2225

2224,2225

2221,2222

2226

CH2

2229

2232

2227,2228

2233,2234

2230,2231

2235

CH3

2238

2241

2236,2237

2242,2243

2239,2240

2244

4 Wire 3 ɸ

(Wye)

Service Type

1

V_Input

1 or 2

Description

31 Char

Channels

Volt Ref

CT Type

Range

Phase Shift

CT Multiplier

CT Sign

CH1

L1 – N [1]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH2

L2 – N [2]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH3

L3 – N [3]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

3 Wire 3 ɸ

(Delta)

Service Type

2

V_Input

1 or 2

Description

31 Char

Multiplier

CH1

L1 – N [1]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH2

L2 – N [2]

mV [1] or RoCoil [2]

Same as 1

Same as 1

Same as 1

0 or 1

CH3

L3 – N [3]

mV [1] or RoCoil [2]

Same as 1

Same as 1

Same as 1

0 or 1

Communication & Verification

CONFIGURING ELEMENT AND CHANNEL REGISTER FOR SERVICE TYPES

The ViewPointHD software enforces all element configurations to form a valid electrical system.
Configurations performed by remote systems may produce unexpected results if configurations are
internally inconsistent. The following tables document how to configure element and channel registers
for each service type. Every register should be explicitly written.

Red Text indicates Required Values, Purple Text Indicates Suggested Defaults if this data is not known.

Modbus Absolute Address/BACnet Object Assignments For Setting up Service Types

Configurations

Channels Volt Ref CT Type Range Phase Shift CT

Even though CH2 is calculated internally it is recommended that the CT settings reflect those from CH1 rather than being left at factory default
to facilitate configuration validation from the RTU.

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2 Wire 1ɸ

(Plug Load)

Service Type

3

V_Input

1 or 2

Description

31 Char

Channels

Volt Ref

CT Type

Range

Phase Shift

CT Multiplier

CT Sign

CH1

ANY [1-6]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH2

ANY [1-6]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH3

ANY [1-6]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

3 Wire 1 ɸ

(Split Phase)

Service Type

4

V_Input

1 or 2

Description

31 Char

Channels

Volt Ref

CT Type

Range

Phase Shift

CT Multiplier

CT Sign

CH1

L1 – N [1]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH2

L2 – N [2]

mV [1] or RoCoil [2]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH3

L3 – N [3]

OFF [0]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

Disabled

(OFF)

Service Type

5

V_Input

1 or 2

Description

31 Char

Channels

Volt Ref

CT Type

Range

Phase Shift

CT Multiplier

CT Sign

CH1

L1 – N [1]

OFF [0]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH2

L2 – N [2]

OFF [0]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

CH3

L3 – N [3]

OFF [0]

Any > 0A

-3.0˚ to +3.0˚

Any > 0 [1]

0 or 1

REGISTER TEMPLATE

Description

2601

PF Sign Convention

2248

V1 Multiplier

2203,2204

V2 Multiplier

2205,2206

System

Description

31 Char

PF Sign Convention

ANSI [1] or IEEE[2]

V1 Multiplier

Any > 0 [1]

V2 Multiplier

Any > 0 [1]

Any channel that needs to be turned OFF should set the CT Type to OFF.

Communication & Verification

Even though CH3 is not used for computation it is recommended that the CT settings reflect those from CH1 rather than being left at factory
default to facilitate configuration validation from the RTU.

Even though disabled channels are not used in calculations and report 0.0 they still contain configuration information. It is suggested that they
be set to a known value rather than left at defaults to facilitate configuration validation by the RTU.

CONFIGURING SYSTEM REGISTERS

Modbus Absolute Address/BACnet Object Assignment

Configurations

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MODBUS PROTOCOL COMMANDS

If configured for Modbus, the PSHD networked power meter family follows the Modbus RTU protocol
and supports the following command set.

Supported Modbus Commands

Command Name

Read Holding Registers 03 Used to read the data values from the PowerScout.

Write Single Register 06 Used to write a single holding register to a PowerScout.

Report Slave ID 11 Used to read information from the identified PowerScout.

SLAVE ADDRESS

Refer to the section “Serial Protocols” for additional information on setting the Slave Address and
finding the address of a specific meter element.
See the Modbus examples document on the DENT Instruments web site or included with your electronic

documentation for additional support on programming Modbus. The following online resources are also
helpful.

http://Modbus.org/docs/PI_MBUS_300.pdf

http://www.Modbustools.com/Modbus.html

http://www.simplyModbus.ca/TCP.htm

Command

Number (Hex)

Description

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BACNET

Building Automation and Control Network (BACnet) protocol was developed under the auspices of the

American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) and is recognized as
an American National, European, and ISO global standard.

BACnet Device ID. All device IDs on a BACnet network must be unique. Refer to the section “Serial
Protocols” and refer to the Register List for additional information.

Serial

Ethernet

The PSHD Serial version supports writable max_master and max_info_frames properties in the device
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.

Ethernet versions can register as Foreign Devices to a BBMD. BBMD stand for BACnet/IP Broadcast
Management Device. The address also can be written to BACnet object identifiers 14014 (BBMD IP
Address LSW) and 14015 (BBMD IP Address 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 the BBMD field in the ViewPoint Communications
tab.

The following online BACnet resources are also helpful.

http://www.bacnet.org/

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v. 4.5.17

APPENDIX A—PSHD LCD MENU NAVIGATION

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APPENDIX B—ENCLOSURE DIMENSIONS

PS48HD Enclosure Dimensions PS12HD Enclosure Dimensions

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APPENDIX C—MOUNTING TEMPLATES

PS48HD Enclosure Drill Template

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Appendix C

PS12HD Enclosure Drill Template

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Appendix C

PS48HD Plate Template

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Two voltage reference inputs (PS48HD only)

depending on current transducer

APPENDIX E—PSHD TECHNICAL SPECIFICATIONS

Specification Description

Service Types

Voltage Channels

Current Channels

Maximum Current Input

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

Line Frequency 50-60 Hz

Power

AC Protection 0.5A Fuse 200kA interrupt capacity

Power Out Unregulated 12VDC output, 200 mA, self-resetting fuse

Waveform Sampling 1.8 kHz (PS48HD), 3.6 HZ (PS12HD)

Parameter Update Rate 1 second

Measurements

Single Phase, Split Phase, Three Phase-Four Wire (WYE), Three Phase-Three Wire
(Delta)

90-346 Volts AC Line-to-Neutral, 600V Line-to-Line, CAT III.

12 (PS12HD) or 48 (PS48HD) channels, 0.525 VAC max, 333 mV CTs, 0-4,000+Amps

150% of current transducer rating (mV CTs) to maintain accuracy. Measure up to
4000A with RōCoil CTs.

From L1 Phase to L2 Phase. 90-600VAC RMS CAT III 50/60Hz, 500mA AC Max

Use of 12 volt auxiliary output requires 100 VAC minimum input voltage.

Volts, Amps, kW, kVAR, kVA, aPF, dPF, kW demand, kVA demand, Import (Received)
kWh, Export (Delivered) kWh, Net kWh, Import (Received) kVAh, Export (Delivered)
kVAh, Net kVAh, Import (Received) kVARh, Export (Delivered) kVARh, Net kVARh, THD,
Theta, Frequency. All parameters for each phase and system total.

Accuracy 0.2% ANSI C12.20-2010 Class 0.2

Resolution Values reported in IEEE-754 single precision floating point format (32 bit).

Indicators 4-line display, tri-color backlight (PhaseChek™)

Pulse Output Open Collector, 5mA max current, 40V max open voltage

Alarm Output Voltage Phase Loss Alarm (SPDT Relay - 30 VDC) (PS48HD only)

Communication

Hardware

Supported Protocols

Max Communication Length 1200 meters with Data Range of 100K bits/second or less

RS-485 Loading 1/8 unit

Communication Rate (baud)

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RS-485, Ethernet, & USB (for configuration only)

Modbus RTU or BACnet Master Slave Token Passing protocol (MS/TP)

Modbus (using SunSpec IEEE-754 single precision floating point model)

Modbus: 9600 (Default), 19200, 38400, 57600, 76800, 115200

BACnet: 9600 (Default), 19200, 38400, 76800

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the user will be required to correct the interference at user’s own expense.

Specification Description

Data Bits 8

Parity None, Even, Odd

Stop Bit 2, 1

Termination None provided

Data Formats

Mechanical

Wire Connections 12-22 AWG 600 VAC, Voltage connection must be #14 AWG or larger & 600 VAC rated

Mounting Enclosure or Panel Mount (PS48 only)

High Voltage Cover IP40

Mounting Plate PS48HD Only

Operating Temperature

Humidity 5% to 95% non-condensing

Modbus, BACnet MS/TP, Modbus TCP or BACnet IP

-20 to + 60⁰ C (-4 to 140⁰ F) (the colder the temperature the more voltage needed to
power the board)

Appendix E

Enclosure ABS Plastic, 94-V0 flammability rating, connections sized for 1–inch EMT conduit

Dimensions

PCBA Dimensions (L) 21.6cm x (W) 21.6.0cm x (H) 6.4 cm (8.5” x 8.5” x 2.5”)

ViewPoint HD™ Minimum System Requirements

Operating System Windows® 7. Windows® 8, Windows® 10

Communications Port RS-485 & USB standard. Ethernet available. One USB Port required on PC.

Safety

FCC Compliance

Serial/Ethernet Meters

(L) 33.7cm x (W) 25.2cm x (H) 8.0 cm (13.3” x 10” x 3.1”) (no enclosure version)

(L) 24.7cm x (W) 25.2cm x (H) 8.0 cm (9.8” x 10” x 3.1”) (no enclosure version)

This device has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference 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 accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case

The following are UL Recognized: PS12HD-B-y-z, PS12HD-P-y-z, PS48HD-B-y-z,

PS48HD-P-y-z

The following are UL Listed: PS12HD-C-y-z , PS48HD-C-y-z

Conforms to UL Std 61010-1, 3rd Edition, UL 61010-2-30:2010

Certified to CSA Std C22.2 No. 61010-1, 3rd Edition

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