Operator’s Guide
PowerScout
PowerScout
™
12 HD
™
48 HD
Networked Metering Systems
and
ViewPoint™ HD
Software
June 2018
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ii
DENT Instruments
PowerScout HD
Operator’s Guide: PowerScout™ HD Power Meters ©2017 DENT Instruments, Inc. All rights reserved.
This manual may not be reproduced or distributed without written permission from DENT Instruments.
PowerScout™, ViewPoint™, and PhaseChek™ are trademarks of DENT Instruments, Inc. Windows®,
Windows® 7, Windows® 8, and Windows® 10 are registered trademarks of Microsoft Corporation.
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Table of Contents
DENT Instruments
PowerScout HD
TABLE OF CONTENTS
Table of Contents .............................................................................................................. iii
Introduction ....................................................................................................................... 6
Unpacking the Unit .......................................................................................................................... 6
PSHD Anatomy ................................................................................................................................. 7
Alternate Product Configuration ............................................................................................... 8
PowerScout HD Meter Safety Summary and Specifications ............................................................ 9
Symbols on Equipment .................................................................................................................... 9
Symbols in Documentation .............................................................................................................. 9
Meter SAFETY .................................................................................................................. 11
Planning For Field Installation .......................................................................................... 12
Project Manager Aspects ............................................................................................................... 12
Configuration & Data Viewing Options ................................................................................... 12
Information Access by Interface Type ..................................................................................... 13
Meter Configuration Overview ...................................................................................................... 14
Meter Installation Overview .......................................................................................................... 14
Verification & Communication Overview ...................................................................................... 15
RTU Programming and Scripting Overview .................................................................................... 15
Meter Configuration - Details ........................................................................................... 16
Install the ViewPoint HD Software ................................................................................................. 16
TYPICAL INSTALLATION ..................................................................................................... 16
CUSTOM INSTALLATION ................................................................................................... 17
Connection & Configuration Options Using ViewPoint HD ..................................................... 17
USB Connection (Power & Communications) ......................................................................... 18
Ethernet Network Connections ............................................................................................... 19
DIRECT: .............................................................................................................................. 19
LCD Display ........................................................................................................................ 19
No LCD Display .................................................................................................................. 20
Network Scan .......................................................................................................................... 21
Launch Configurator ................................................................................................................ 21
ViewPoint HD Software Overview ................................................................................................. 22
ViewPoint HD Documentation ................................................................................................ 23
ViewPoint HD Documentation—Instructional Videos ............................................................ 24
Configuring Electrical Components using ViewPoint HD ........................................................ 25
Configuring Alarms in ViewPoint HD ....................................................................................... 27
Configuration Input Methods ........................................................................................... 27
Setting the Real Time Clock ..................................................................................................... 28
Real Time Clock Power Source .......................................................................................... 28
Retrieving Interval Data ........................................................................................................... 29
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iv
Table of Contents
DENT Instruments
PowerScout HD
PSHD Web App Overview .............................................................................................................. 30
Connect to Web App using USB .............................................................................................. 30
Connect to Web App using Ethernet ....................................................................................... 30
Macintosh Users ............................................................................................................................ 31
Meter Installation - Details ............................................................................................... 32
Meter Mounting Configurations .................................................................................................... 32
Installation Sequence .............................................................................................................. 33
Connecting Voltage ................................................................................................................. 35
Wiring the PSHD Meter in a 3-wire, Split ɸ Service Panel ............................................................. 36
Wiring the PSHD Meter in a 4-wire, 3 ɸ Service Panel .................................................................. 37
Current Transformer Basics ........................................................................................................... 38
Wiring the CTs to the PSHD Meter ................................................................................................ 39
Communication & Verification - Details ............................................................................ 40
Physical Connections on an RS-485 Multidrop Network ............................................................... 40
Communication Verification .......................................................................................................... 41
ViewPoint HD / PSHD Web App .............................................................................................. 41
Physical Interface Verification ....................................................................................................... 42
Serial Setup Verification .......................................................................................................... 42
LAN Ethernet Network Verification ......................................................................................... 42
DHCP ........................................................................................................................................ 42
STATIC IP .................................................................................................................................. 42
Protocol Verification ...................................................................................................................... 43
Modbus Settings ............................................................................................................................ 43
Modbus RTU Settings .............................................................................................................. 43
Modbus TCP Settings ............................................................................................................... 43
BACnet Settings .............................................................................................................................. 43
BACnet MSTP ........................................................................................................................... 43
BACnet IP ................................................................................................................................. 43
Pulse Outputs ................................................................................................................................. 44
Pulse Inputs .................................................................................................................................... 44
ALARM (SPDT) ................................................................................................................................ 44
12 Volt Auxiliary Power .................................................................................................................. 45
Access Restriction Limitations ....................................................................................................... 46
Security PIN Protection .................................................................................................................. 46
Using the Permission Registers ............................................................................................... 46
Read Only Permission Register ................................................................................................ 47
Read/Write Permission Register ............................................................................................. 47
Reading PINs over Modus or BACnet ...................................................................................... 47
ViewPoint HD – Unrestricted Access ....................................................................................... 47
Verification of Installation ............................................................................................................. 48
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v
Table of Contents
DENT Instruments
PowerScout HD
Installation Phase Verification ................................................................................................. 48
Phase Checking By Phasor Plot ................................................................................................ 49
CT Orientation Check ..................................................................................................................... 50
Power Factor Convention .............................................................................................................. 51
Total Harmonic Distortion ............................................................................................................. 51
Pre-Processing Aids ........................................................................................................................ 52
Snap Thresholds ...................................................................................................................... 52
Multipliers ............................................................................................................................... 52
CT Phase Shifts ........................................................................................................................ 52
Demand ................................................................................................................................... 52
RTU Programming and Scripting - Details .......................................................................... 53
Register Organization..................................................................................................................... 53
https://www.dentinstruments.com/technical-documents/powerscout ............................... 53
Element vs System Scope ........................................................................................................ 53
Configuring Element and Channel Register for Service Types ................................................ 54
Configuring System Registers .................................................................................................. 55
Modbus Protocol Commands ........................................................................................................ 56
BACnet ........................................................................................................................................... 57
BACnet Structured View .......................................................................................................... 57
Appendix A—PSHD LCD Menu Navigation ........................................................................ 59
About Meter ............................................................................................................................ 59
Menu Navigation ..................................................................................................................... 60
Communication Navigation ..................................................................................................... 61
Appendix B—Enclosure Dimensions ................................................................................. 62
Appendix C—Mounting Templates ................................................................................... 63
Enclosure Internal Mounting Hole Locations................................................................................. 63
Sheet Metal Plate Mounting Hole Locations ................................................................................. 64
Appendix D—PSHD Technical Specifications ..................................................................... 65
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DENT Instruments
PowerScout HD
INTRODUCTION
There are two meters in the PowerScout HD Series: the PowerScout 12 HD (PS12HD) and the
PowerScout 48 HD (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 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) or RS-485 serial. BACnet MS/TP and Modbus
RTU are the two communication protocols that operate over an RS-485 serial network and BACnet IP
and Modbus TCP are supported over Ethernet. 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.
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
o PS48 (2 voltage, 50 three-position terminals, 3 two-position terminals)
o PS12 (1 voltage, 14 three-position terminals, 5 two-position terminals)
▪ Thumb drive containing ViewPoint HD Software, Register List, Manual, Tutorial Videos
▪ Certificate of Calibration (COC)
▪ USB A to B Cable (one per order)
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DENT Instruments
PowerScout HD
Introduction
PSHD Anatomy
All user connections are made on the circuit board. Connectors are identified by function and include
polarity markers.
PS48HD (mounting plate version shown)
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DENT Instruments
PowerScout HD
Introduction
ALTERNATE PRODUCT CONFIGURATION
PS12HD (Enclosure with cover removed)
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DENT Instruments
PowerScout HD
Introduction
PowerScout HD Meter Safety Summary and Specifications
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.
PS12HD-B-y-z, PS12HD-P-y-z
PS48HD-B-y-z, PS48HD-P-y-z
PS12HD-C-y-z
PS48HD-C-y-z
The PSHD Family conform to the
following:
PowerScout HD Series:
Conforms to UL Std 61010-1, 3rd
Edition
Certified to CSA Std C22.2 No.
61010-1, 3rd Edition
PowerScout HD devices need to be installed in a user-supplied UL Listed/ uR Recognized enclosure in order to comply
with NEC and local electrical codes.
The PowerScout HD is an Over-Voltage Category III device. Use approved protection when operating the device.
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.
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.
Symbols on Equipment
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DENT Instruments
PowerScout HD
Introduction
MAINTENANCE
There is no required maintenance with the PowerScout HD. Abide by the following items:
Cleaning: No cleaning agents, including water, shall be used on the PowerScout HD.
No accessories are approved for use with the PowerScout HD meter other than those specified in the DENT
Instruments product literature and price sheets.
If the meter appears damaged or defective, first disconnect all power to the meter. Then call or email technical
support for assistance.
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DENT Instruments
PowerScout HD
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:
Always open or disconnect circuit from power-distribution system (or service) of building before
installing or servicing current transformers.
A circuit breaker used as a disconnect must meet the requirements of IEC 60947-1 and IEC 60947-3
(Clause 6.11.4.2)
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.
Current transformers may not be installed in an area where they block ventilation openings.
Current transformers may not be installed in an area of breaker arc venting.
Not suitable for Class 2 wiring method nor intended for connection to Class 2 equipment.
Secure current transformer and route conductors so that they do not directly contact live terminals or
bus.
CTs shall be listed to UL2808
Meter Installation Safety Requirements
PSHD meters must be installed in accordance with local electrical codes.
Use copper conductors only.
Connection to the mains terminals shall be made with 14 AWG minimum wire gauge.
External secondary inputs and outputs should be connected to devices meeting the requirements of
IEC 60950
The following additional requirements apply for Recognized board versions of the PSHD meter
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
DENT Instruments
PowerScout HD
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. Things to consider include determining how to communicate
with the meter, setting address configuration, installing ViewPoint HD, access to PIN numbers, etc. The
more tasks completed before installation the fewer tasks will be needed in the field, where most
mistakes happen. The following section gives an overview of typical process 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 a Microsoft Windows application (ViewPoint HD) that runs on PCs or Tablets. ViewPoint HD
is encouraged for complex installations and is required for configuring advanced functions like alarms.
The second interface is the PSHD Web App and is intended for smart phones or tablets that can connect
over USB, or Ethernet. The third interface (LCD) is an optional component and 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 next.
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Planning for Field Installation
DENT Instruments
PowerScout HD
INFORMATION ACCESS BY INTERFACE TYPE
DENT Interface Options
Customer
Device
PC or Laptop Running
ViewPoint HD
Smart Device or Tablet
via
PSHD Web App
LCD on Meter
(if equipped)
RTU
(Host System)
Modbus /BACnet
When
Used
Meter Setup
Field Visit
Field Visit
End User
Building
System
Real Time Values
All Meter Parameters
Waveform Capture
Harmonic Analysis
All Element View
Phasor Plot
Alarms
All Meter Parameters
Single Element View
Voltage
Current
VA
VAR
kWh
Single Element View
All Meter Parameters
Configuration
Entire Meter
Visual Guides
Copy / Paste
Entire Meter
Sans Alarms
Text Based
Communications Only
Entire Meter
Register Based
Security PINs
Enforced
Factory Support – Level 3
Read Only – Level 1*
Read / Write – Level 2*
Read Only – Level 1*
Read / Write Level 2*
(limited to communication)
Factory Support – Level 3
* If PINs are configured
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Planning for Field Installation
DENT Instruments
PowerScout HD
Meter Configuration Overview
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
• 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
• Set alarms
• Set security PINs
Tools
Typical Work
• Mounting hardware (customer supplied)
• Wiring & supplies, labels, wire ties
• Tablet, Smart Device, or
Laptop PC
• Multi Meter, Current Clamp
• Camera
• Mechanical mounting
• Electrical installation
• Install voltage cover
• Apply power to meter
• Confirm basic operation of meter
▪ Work performed ahead of the installation saves time in the field and results in fewer
mistakes!
Meter Installation Overview
▪ Performed by licensed electrician.
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Planning for Field Installation
DENT Instruments
PowerScout HD
Verification & Communication Overview
Tools
Typical Work
• Tablet, Smart Device (Web Page Based), or
Laptop PC (ViewPoint HD Software)
• On site troubleshooting
• Multi Meter, Current Clamp
• Camera
• 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 alarms
• Set security PINs
• Checklist
Tools
Typical Work
• Laptop PC (Remote Access to RTU)
• Remote troubleshooting
• Register List
• Confirm meter communication settings
• Confirm communication protocols
• Exercise remote connectivity
• Run configuration scripting
• Set alarms
• Set security PINs
• Confirm data integrity
▪ Can be modified with power applied to the meter.
RTU Programming and Scripting Overview
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Meter Installation
DENT Instruments
PowerScout HD
METER CONFIGURATION - DETAILS
The PSHD meter cannot be configured using ViewPoint HD over a serial port. RS-485 serial
network configurations must be pre-configured or use Modbus / BACnet hosts.
This section describes the use of the ViewPoint HD Windows Application. If this interface
cannot be used, refer to the section on using the simplified web browser interface. The web
browser can be accessed from the USB port to support Mac users.
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 emailed to an installer. The setup can also be performed on-site and
reflect “as-built” configurations.
Install the ViewPoint HD Software
Insert the ViewPoint HD thumb drive into the computer or download from
https://www.dentinstruments.com/software-downloads
Locate the ViewPoint HD Installer and open this folder.
TYPICAL INSTALLATION
Double-click the “RunMe to Install ViewPoint HD.bat” batch file to install ViewPoint and its support files
in Windows default location. This option works for most users.
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DENT Instruments
PowerScout HD
Meter Installation
CUSTOM INSTALLATION
For users who want to specify the location of the ViewPoint HD software and support files, double-click
the folder “Install Files” and run setup.exe. This will prompt the user for additional details.
CONNECTION & CONFIGURATION OPTIONS USING VIEWPOINT HD
When the ViewPoint HD application is launched, it will prompt the user to select one of four
connectivity options.
• Connect over USB cable
• Connect over Ethernet to a Predetermined IP address
• Scan Network
• Create Setup file only (no meter connected)
Note: The USB connection method is recommended for new users who have physical access to the
meter and a USB A to B cable (supplied). Check out this option first!
ViewPoint HD Connection Options
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DENT Instruments
PowerScout HD
Meter Installation
USB CONNECTION (POWER & COMMUNICATIONS)
1) Connect the PSHD meter to a USB port of your computer to provide both power and
communications.
a. If equipped, the LCD display is the most visable indication of a running meter.
b. For meters without a display, a green flashing LED on the circuit board indicates that the
PSHD meter has booted and is running.
c. The PSHD meter draws 450mA from the USB port which may overload “out of spec” USB
hosts. If the meter fails to power, or flickers when powering over USB, an alternate
configuration for power must be used.
Preferred Connection via USB A to B Cable
2) Launch the ViewPoint HD application and press the “CONNECT OVER USB” button on the pop-up
window.
The meter should now be communicating. The ViewPoint HD application offers visual guides and context
help to facilitate meter configuration. Please read the ViewPoint HD overview section (below) or watch
the tutorial videos for additional information on configuring the meter. By default, PSHD meters are
configured for DNS Ethernet addressing. A very common configuration sequence is using USB to
configure a meter for Ethernet communications at a static IP address and then switching from USB over
to Ethernet to locate it. This is facilitated in ViewPoint HD by pressing the “Refresh Connectivity” icon
located in the upper right hand corner.
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DENT Instruments
PowerScout HD
Meter Installation
ETHERNET NETWORK CONNECTIONS
Both the “Network Scan” and “Connect Over Ethernet to IP …” options require that a valid
network connection exists between the PSHD meter and configuration PC. This is a common
startup issue!
Configuring the PSHD over Ethernet requires that the meter be powered used a second connection. The
PSHD does not support Power Over Ethernet (POE). If the meter is already installed within the buildings
electrical network, closing the AC breaker (or approved disconnect) will turn on the meter through the
meter’s internal power supply. In the rare case that a computer’s USB port cannot provide 500mA of
current, an AC / USB charger or a USB battery can be used as a power source while using Ethernet for
communications.
DYNAMIC HOST CONFIGURATION PROTOCOL (DHCP):
PSHD meters are shipped in DHCP mode to prevent IP conflicts with other equipment. The meter is
expecting to receive an IP address from a DHCP service provided by a router, Layer 3 switch, or a server
providing DHCP service. Under this configuration, as long as the PSHD meter and the host PC are
requesting an IP address from the same DHCP service provider, they will be able to communicate. Upon
powering up, the PSHD meter will indicate the IP address on the LCD display (if equipped) or can be
found using the Network Scan function.
DIRECT:
When a PC is directly connected to a PSHD meter via an ethernet cable, no DHCP service exists. This
configuration can be made to work, but requires changes to either the meter communication settings or
the PC network configuration.
LCD Display
For units equipped with an LCD display navigate to
Communications Ethernet Settings DHCP OFF
Change the IP address in the meter to match the subnet of your PC’s IP address, making the meter IP
unique, or note the current address on the meter and prepare to configure your PC’s IP settings as
shown below.
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DENT Instruments
PowerScout HD
Meter Installation
Once the PC and PSHD are set to communicate on the same IP subnet:
1) Launch the ViewPoint HD application and enter the IP address of the meter (shown as the
factory default).
2) Press the “Connect over Ethernet to:” button on the pop up window.
3) 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.
No LCD Display
A PSHD meter without a display can only communicate directly with a PC over ethernet if the IP
address of the meter is set to static. Setting the IP address must be done ahead of time using
another interface (such as USB or serial).
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DENT Instruments
PowerScout HD
Meter Installation
NETWORK SCAN
Network Scan is a feature for monitoring previously installed and configured PSHD meters over an
Ethernet network. Network Scan will broadcast a UDP discovery packet on the same network as the PC
running the ViewPoint HD application. Normally this will be performed on a corporate network running
DHCP. Any PowerScout HD meter that responds will be displayed in a table that includes the system
description register, IP address, serial number, and communication configuration.
Highlight the desired meter and select OK, Test or Setup. Note that the effectiveness of this technique is
highly dependent on the configuration of the PC running ViewPoint HD (which may have more than one
network card) and the network configuration. Rescans can be used to make multiple attempts to locate
a particular meter on busy networks (UDP has no built-in retry provisions).
LAUNCH CONFIGURATOR
The final option in the ViewPoint HD Connect to Meter pop-up window is “Launch Configurator”. This
option allows for the creation of a meter setup or alarm table for future use without connecting to a
meter. After prompting the user for a meter model (shown below), ViewPoint HD launches under a
mode with restricted functionality. This mode operates on files only.
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22
DENT Instruments
PowerScout HD
Meter Installation
ViewPoint HD Software Overview
Display Data
Monitor
Power
Energy
Demand
Monitor
Power
Energy
Demand
Power Factor
Waveform Capture
Harmonics
Phasor Plot
Setup
Meter Setup
Communication Setup
Advanced
About the Meter
Setup
Meter Setup
Communication Setup
Alarms
Advanced
About the Meter
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 filter for viewing basic metering data or extended data that can be helpful in
troubleshooting. The information displayed in the drop-down list for each filter setting is summarized
below.
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23
DENT Instruments
PowerScout HD
Meter Installation
VIEWPOINT HD DOCUMENTATION
Help Aids
Information
This button toggles the context pop-up window which
displays the technical and register description of any
screen object you hover over with the mouse. Example
shown for Frequency:
CT Type
Current Transformer models are selected in the
drop-down list and are identified by a combination of CT
image and amperage range. The parameters for the
selected CT are automatically populated. This information
can be edited for custom use.
Service Type
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.
Wiring Diagrams
Diagrams of different wiring configurations, such as
illustrated here, are available directly within the software
for quick reference.
ViewPoint HD includes context help and other user-guiding features (shown below) to facilitate rapid
and accurate configuration.
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DENT Instruments
PowerScout HD
Meter Installation
VIEWPOINT HD DOCUMENTATION—INSTRUCTIONAL VIDEOS
Video Title
Video Hyperlink
Meter Setup—Electrical
VIDEOS\PSHD Meter Setup\PSHD Meter Setup 8_18_2017.mp4
Waveform Capture & THD
VIDEOS\PSHD Waveform & THD Example\Waveform THD Demo.mp4
Phasor Plot
VIDEOS\PSHD Phasor Plot\Phasor Plot Demo.mp4
Alarms
VIDEOS\PSHD Alarms Demo\Alarms-demo.mp4
Setting up a PIN
VIDEOS\PSHD PIN Demo\PIN Demo.mp4
Excel Register List
VIDEOS\Register List Demo\Register List.mp4
Additional information about the capabilities of ViewPoint HD software are presented in short
videos.
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25
DENT Instruments
PowerScout HD
Meter Installation
CONFIGURING ELECTRICAL COMPONENTS USING VIEWPOINT HD
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DENT Instruments
PowerScout HD
Meter Installation
CONFIGURING COMMUNICATIONS USING VIEWPOINT HD
Navigate to Communication Setupunder the Display Menu List Box
RS-485
OR
ETHERNET
RS-485 Ethernet
Modbus
OR
BACnet
Modbus
OR
BACnet
Modbus BACnet Modbus BACnet
Set Serial Settings Set Serial Settings
Set Device ID
Set Max Masters
(optional)
Set Max Info Frames
(optional)
DHCP
OR
STATIC
Set Modbus Port
(optional)
Set Device ID
DHCP Static IP
Set Static IP Address
Set Subnet Mask
Set Gateway Mask
Press SEND SETUP TO METER
Set MS/TP Address
Set BACnet Port & BBMD
(optional)
Set Default Gateway
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27
DENT Instruments
PowerScout HD
Meter Installation
CONFIGURING ALARMS IN VIEWPOINT HD
The PSHD power meter has the ability to set alarms for over and under conditions for voltage and
current on any meter channel.
Configuration Input Methods
ViewPoint HD uses dynamic entry for the specification of Alarm settings. Whichever text entry field is
selected becomes the forcing condition and the other related fields are updated by calculation to reflect
a consistent set of conditions. The text entry fields in grey are “configuration aids” and are NOT
retained by the meter. Only the fields with a black background are stored in the meters memory or in
configuration files.
Nominal Values
Entering alarm thresholds based on “percent of nominal” values is helpful when alarm conditions are
desired to be centered around electrical components or industry standard conditions. For example, an
over current alarm may be set to 80% of an installed circuit breaker to alert when that breaker exceeds
NEC recommendations.
Absolute Values
Entering alarms based on absolute value is a matter of entering the triggering values directly in the
register fields (black background).
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DENT Instruments
PowerScout HD
Meter Installation
SETTING THE REAL TIME CLOCK
Users desiring to use the Interval Data Recording capability of the PSHD meter will want to
have a procedure that ensures the Real Time Clock is set as part of the commissioning process.
The PSHD meter includes a Real Time Clock. The clock is used only to time stamp Interval Data in the
log, it is not used for calculation within the meter. For those customers using the IDR function of the
meter, it is helpful (but not strictly necessary) to set the real time clock so that data records can be
uniquely identified. The time can be set using ViewPoint HD, under the Advanced Tab, by clicking on the
small time icon in the bottom right corner of the clock.
The clock icon launches the Window Calendar and allows the user to any desired date and time. “Set
Time to Now” populates the current time. Press the “OK” button to commit this time to the RTC chip
onboard the meter.
Real Time Clock Power Source
The RTC integrated circuit is a stand alone low power circuit within the PSHD meter. Time is kept in the
absence of a connected external power source (AC or USB power) by a super capacitor. The capacitor
can keep the RTC running over normal power outages (days to weeks) but is not expected to keep time
while the meter is being stored or shipped.
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DENT Instruments
PowerScout HD
Meter Installation
RETRIEVING INTERVAL DATA
Sequence
Number
Time Stamp
A1 kWh
A2 kWh
A3 kWh
A System
B1 kWh …
123456
5/15/2018 12:00
1.11E+5
2.22E+5
3.33E+5
6.66E+5
0
123457
5/15/2018 12:15
1.12E+5
2.23E+5
3.34E+5
6.69E+5
0
The PSHD meter maintains an internal log of the energy data (Net kWh) for each channel in the meter.
This log is updated every 15 minutes and is always active. The meter stores 63 days’ worth of 15 minute
data in its memory. This data can be retrieved by users looking to restore gaps in data collection where
RTUs may have been offline or communication has been interrupted. The Interval Data Recording (IDR)
is assessed through ViewPoint HD in the Advanced menu.
Click the “Download” button.
By default, the name of the data file will include the Serial Number of the Meter and the System
Description followed by – Datalog (see below)
After pressing “OK” the entire data path will be displayed
The data log is a Comma Separated Values (CSV) file that can be opened in Excel or another program.
The data will be listed in Chronological Order according to an internal 32 bit sequence counter. The
sequence counter can be used to merge separate files together if necessary (example below).
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DENT Instruments
PowerScout HD
Meter Installation
PSHD Web App Overview
Mac users can configure the meter using the PSHD Web App Interface by installing a driver
which is included in the Media Distribution materials or on the DENT web site.
The PSHD power meter hosts a Web Application that can be accessed by any smart device running a
web browser. The PSHD Web App can be accessed by using the USB or Ethernet port.
CONNECT TO WEB APP USING USB
1) Connect your smart device to the meter
2) Open a Web Browser
3) Enter http://169.254.1.5 (this is the static address of the USB port)
CONNECT TO WEB APP USING ETHERNET
1) Discover the IP address of the meter by one of the following methods (a-c)
a. Navigate to About Meter on the LCD menu.
b. Use a network discovery tool to find the address by connecting and disconnecting the
Ethernet cable.
c. Set the meter to a static address using the serial interface
2) Connect your smart device to the same subnet as the PSHD meter
3) Open a Web Browser
4) Enter the PSHD’s Ethernet address into the web browser
AUTHENTICATION
Because the PSHD Web App can be viewed and controlled by any smart device, and communicates in
parallel to the host system, the PSHD can be configured to require a PIN# to restrict access the meter.
Enter the PIN#, if assigned, or leave blank, if unassigned, and press the Login button.
Organizationally, the PSHD Web App works much the same as ViewPoint HD, although it has no analytics
and operates on a single element at a time.
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DENT Instruments
PowerScout HD
Meter Installation
Macintosh Users
ViewPoint HD is a Windows application and does not run on MAC OS. MAC users can, however, make
use of the PSHD Web App interface through the USB port by installing a CDC-EEM driver. This driver is
available in the Media Distribution materials or can be downloaded from the DENT Instruments web
site.
1) Users must have OS version of 10.11.1 or higher
2) Drag the file dentinstruments-2.03a1.dmg onto the desktop
3) Double-click the dmg file to initiate the MAC installer
4) Follow the installation prompts
5) Reboot the MAC after the installation process is complete.
6) Connect the PSHD meter to the MAC with USB cable.
7) Open Safari browser and type IP address 169.254.1.5 to access the PSHD Web App
8) If no login credentials are setup, click on login button with blank for password
9) The PSHD Web App checks for login credentials and, if passed, opens Real Time Web Page
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DENT Instruments
PowerScout HD
Meter Installation
METER INSTALLATION - DETAILS
Mounting Options
PS48 HD
PS12 HD
Enclosure
OEM Plate
RAW PCBA
Special Order
Special Order
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 HD 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. Raw PCBA’s (available by special order only) 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.
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DENT Instruments
PowerScout HD
Meter Installation
INSTALLATION SEQUENCE
#8 Fastener
The following section illustrates the PS12HD model. The PS48HD components are slightly different, but
follow the same procedure.
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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DENT Instruments
PowerScout HD
Meter Installation
STEP 3) Mount conduit fittings, conduits, and blanking plugs
STEP 4) Connect voltage leads
DO NOT ENERGIZE METER WITH VOLTAGE COVER REMOVED
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DENT Instruments
PowerScout HD
Meter Installation
STEP 5) Attach high voltage cover
IMPORTANT: Verify the circuit breaker is marked as the disconnect breaker for the meter.
IP30
TOUCH SAFE (with internal cover installed)
STEP 6) Connect CT and Communications Wiring
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.
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DENT Instruments
PowerScout HD
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
Single Phase
220 VAC Plug Load
L1-L2
Meter is powered
from L1 to L2 on
the V Input 1
terminal
(Label as Disconnect))
Connect the
Neutral wire to
V INPUT 1 (N) on
the PSHD meter
3-Wire, 1 Phase
Split Load
L1-N, L2-N
Illustrating the intended wiring configuration for each of the Service Types
available in the Service drop-down list under “Meter Setup”
EXAMPLE LOADS:
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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DENT Instruments
PowerScout HD
Meter Installation
Wiring the PSHD Meter in a 4-wire, 3 ɸ Service Panel
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.
Connect the
Neutral wire
or Ground wire to
V INPUT 1 (N) on
the PSHD meter
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
3 Wire, 3 ɸ used
On MAINS
L1-N, L2-N, L3-N
(RōCoils Shown)
Single Phase
Branch Loads
L1-N
4 Wire, 3 ɸ
WYE load
(Neutral Current)
L1-N, L2-N, L3-N
Illustrating the intended wiring configuration for each of the Service Types
available in the Service drop-down list under “Meter Setup”
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DENT Instruments
PowerScout HD
Meter Installation
Current Transformer Basics
Wiring Guide for CT Types
Split, Hinged, & Solid Core CTs
RōCoil CTs
White: Positive
Black: Negative
(no shield)
White: Positive
Brown: Negative
Bare Wire: Shield
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)
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DENT Instruments
PowerScout HD
Meter Installation
Wiring the CTs to the PSHD Meter
The image below is the counterpart to the service panel illustration and indicates how to connect CTs to
the PSHD meter for each service type. For service types that are not specifically listed, it is
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.
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DENT Instruments
PowerScout HD
Communication & Verification
COMMUNICATION & VERIFICATION - DETAILS
It is assumed that the meter is now powered up from the 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 real-time data values can be confirmed quickly using the LCD
interface if equipped. When significant setup modifications are anticipated, a computer
interface is recommended.
2-Wire Multidrop Network using Terminating Resistors
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 Multimeter (DMM) can be
used to confirm measurements at the board terminals, if necessary.
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 and are usually 680 ohms for a RS-485 network.
▪ 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 1/8th unit load allowing up to 256 like devices in parallel.
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Communication & Verification
DENT Instruments
PowerScout HD
Communication Verification
Verification includes confirmation of BOTH the physical interface settings (Serial or Ethernet)
and the protocol (Modbus or BACnet) settings.
The LCD User Interface can be used to quickly confirm the settings required for each combination of
interface and protocol. The interface is intuitive and groups together commonly associated registers.
The complete interface is presented in Appendix A as a navigational map. Arrows indicate how to move
from one menu display to the next. A Reverse Contrast entry in the documentation indicates the active
menu item in a list which corresponds to a blinking character in the physical LCD. The ENTER button is
used to select a property and up / down buttons are used to select among the values supported by the
meter. Note that changes to the meter configuration are limited to the communication interface using
the LCD. If additional changes (such as CT type) are required, they must be made using a software
interface.
Example LCD Navigation
VIEWPOINT HD / PSHD WEB APP
If your PSHD model does not include the LCD User Interface, or if you prefer to verify the installation
using software, then verification is facilitated through the ViewPoint HD PC application or the PSHD Web
App which shares a common design. Refer to the section on Configuration Details for an overview and
list of instructional videos for ViewPoint HD or the PSHD Web App.
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Communication & Verification
DENT Instruments
PowerScout HD
Physical Interface Verification
SERIAL SETUP VERIFICATION
In a multidrop serial network, the host data format settings are typically known or specified and the
slave is adjusted to match. In some cases (long wiring runs, etc.), it may be necessary to experiment in
determining the fastest allowable baud rate for a given wiring configuration by changing BOTH the host
and slave devices. Configurations other than 8N1 are rare and it is advised to use this configuration for
Data Bits, Parity, and Number of Stop bits, if possible.
LAN ETHERNET NETWORK VERIFICATION
The PSHD meter communicates using IEEE 802.3 Ethernet connectivity running at a 10/100 Mbps.
Verification of the meter settings over Ethernet includes ensuring that the IP address of the meter is
within a range that allows communication with a host (if static) or is set for DHCP, allowing the meter to
be assigned an address by a DHCP server as described below.
DHCP
If the PSHD meter is configured for 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 HD or the PSHD Web App. 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. One
common approach is to set the PSHD for DHCP so that the address can be assigned by a DHCP server
and then change that IP address to static once the connection is made. PSHD meters are set to use
DHCP as a default setting to facilitate this approach.
STATIC IP
If the PSHD meter is set to a static IP then its address 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.
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Communication & Verification
DENT Instruments
PowerScout HD
Protocol Verification
The network protocol is typically specified as part of the installation. BACnet MS/TP and Modbus RTU
are the two communication protocols that operate over an RS-485 serial network and BACnet IP and
Modbus TCP are the protocols over Ethernet. Each combination of interface and protocol require
specific registers settings described below. The scope of this section is to use either the LCD interface or
software tools to quickly confirm or change settings to match an existing specification. Further
information and optimization tips are covered in the section on RTU programming.
Modbus Settings
MODBUS RTU SETTINGS
Device Address: In a Modbus network each device must be assigned a unique slave address. Valid
Modbus addresses are 1-240 (keeping in mind the PS48HD requires 15 addresses beyond Element A or
the PS12HD requires 4 address beyond Element A). The slave address of the power meter sets the
register address for ELEMENT A. Adjacent elements B, C, D, etc. are accessed by incrementing the
slave address by 1. The slave address of the PSHD meter needs to be set to match the address expected
by the RTU and is normally part of the network specification. The default address for element A is 1.
MODBUS TCP SETTINGS
Modbus Port: The PSHD meter uses the industry standard Port 502 for Modbus. This port number can
be changed, although this is considered an advanced setting and should be left at 502 unless this
generates a conflict on the host system. The port number can only be changed through the ViewPoint
HD software interface.
BACnet Settings
BACnet Device ID: In a BACnet network, each device must be assigned a unique Device ID and is
common to BACnet MS/TP and BACnet IP protocols. Besides the standard ability to change this from a
BACnet explorer tool it may be changed via ViewPoint HD, PSHD Web App, or LCD.
BACNET MSTP
Device Address: DENT meters are Master devices and as such must use MS/TP addresses in the range
from 0-127. This address must be unique on the network.
Max Masters: The default setting is 127 and does not usually need to be changed.
Max Info Frame: The default setting is 1 and does not usually need to be changed.
BACNET IP
BACnet Port: The BACnet default port is 47808 and does not usually need to be changed
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Communication & Verification
DENT Instruments
PowerScout HD
BBMD: The BACnet/IP Broadcast Management Device is set to 0.0.0.0 at default and can be changed
>50 mec
>50 mec
through a software tool to allow discovery across networks.
Pulse Outputs
Early PS48HD meters (Hardware revision H running firmware version
1.012) were equipped with 2 pulse outputs. Customer feedback
indicated that inputs would be more useful than outputs. In response
to this, the pulse direction was reversed on the PS12HD and is
planned to be reversed on PS48HD meters starting with hardware
revision I. While this transition is taking place, the terminals
identified as Pulse Outputs (image right) are non-operational on
PS48HD meters running firmware version 1.018 and higher.
Pulse Inputs
PS12HD meters are equipped with 4 pulse inputs and PS48HD meters (hardware version I) are equipped
with 2 pulse inputs. Pulse counting supports accumulation of consumption data from any external meter
using a dry contact (Form A Relay) or open collector outputs. The PSHD pulse inputs are compatible
with “low speed” meters. The pulse duration must exceed 50mS in both the logic low and high state
allowing for a maximum input frequency of 10 Hz.
Pulse scaling, resetting and accumulated values are accessed through registers and are “system” in
scope. Refer to the register list, ViewPoint HD, or videos for more information.
ALARM (SPDT)
The PSHD meter supports user-configurable alarms for over-current, under-current, over-voltage, and
under-voltage. ViewPoint HD helps users set these values by allowing for values to be entered using
direct entry mode or specifying the limits as a percentage of nominal.
Alarm persistence settings are used to allow for temporary conditions, such as a motor starting, that are
beyond trigger limits. For example, in the case of meter upset from ESD events, short persistence
settings may lead to false alarm triggers. When any alarm condition has been satisfied throughout the
persistence interval, the PSHD trips the MASTER ALARM relay, which is an electromechanical relay on
the PCB.
Once tripped, the relay can only be reset by clearing the alarm through Modbus register/ BACnet object
2451”
The Master Alarm relay can be hard wired to an interrupt or polling circuit in a host system allowing for
a more rapid response than the data polling frequency, if desired. The status of each alarm is
determined by reading status registers.
Refer to the register list, ViewPoint HD, or instructional videos for more information.
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Communication & Verification
DENT Instruments
PowerScout HD
Note: The Master Alarm relay is intended for low voltage DC connections.
The user must protect the switch from over-current conditions when closed.
12 Volt Auxiliary Power
The PSHD meter provides an auxiliary 12 volt output that is derived from an auxiliary winding on the
PSHD’s line-connected power supply. The 12 volt supply voltage is unregulated but protected by a selfresetting fuse. The purpose of the supply is to power external radio equipment or provide supply
voltage for analog sensors, such as 4-20 mA current loop devices. If full-rated current is drawn from this
terminal, the minimum operating voltage of the L1-L2 power supply is 100 VAC.
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Communication & Verification
DENT Instruments
PowerScout HD
Access Restriction Limitations
If security levels have been set up in the meter, no data is accessible through the LCD user interface or
PSHD Web App 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.
Security PIN Protection
PSHD meters have two levels of PIN protection that users can choose to assign for restricting access to
meter information. The PIN logic is described in the figure below. The default user entry (on power up
or time-out) is 0000 which satisfies both the Read Only and the Read / Write default register settings.
USING THE PERMISSION REGISTERS
The PSHD meter uses both a “Read Only” register and a “Read / Write” register to compare against user
entrees from the LCD keypad or PSHD Web App form entry. Both internal permission registers have a
default value of [0000]. A consequence of this is that both PIN registers need to be configured (i.e.
changed from defaults) to implement a read only PIN, otherwise the situation may occur where a user
intends to restrict access to “Read Only” by setting only this PIN unaware of the fact that the default PIN
still matches the criteria for “Read / Write” which will accidentaly promote the user. ViewPoint HD and
the PSHD Web App disallow this condition, but remote programmers using direct register access may
create this condition.
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Communication & Verification
DENT Instruments
PowerScout HD
READ ONLY PERMISSION REGISTER
ViewPoint HD is the preferred tool for setting up access restrictions because it allows users to
test the function of the PINs without locking themselves out from the ability to change the PIN,
a frustrating catch 22!
Configuring the meter for a Read Only user allows data or configuration items to be viewed, but not
changed. This level of authorization might be appropriate for general end-users such as building owners
who may not be aware of the details of the installation. It is recommended to use ViewPoint HD to
configure permissions, although it is also possible to set up a Read Only PIN using the PSHD Web App if a
Read/ Write PIN has already been entered (either through the LCD or the PSHD Web App itself).
READ/WRITE PERMISSION REGISTER
Read/Write permissions allow users to read and write configuration items and to reset the PINs. This
level of authorization will be required by any technician or user who needs the ability to correct setup
errors in the meter. The default PINs [0000] allow new users to reset the Read / Write PIN from either
the PSHD Web App or ViewPoint HD. Permissions cannot be set through the LCD interface.
READING PINS OVER MODUS OR BACNET
ViewPoint HD can be used to directly report the Read Only and Read/ Write PINS under the Advanced
Tab (passwords). The value reported by ViewPoint HD is the value as entered in the web page or LCD
interface.
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.
VIEWPOINT HD – UNRESTRICTED ACCESS
The ViewPoint HD software tool can be used to read & write configuration information to the meter
without entering credentials.
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Communication & Verification
DENT Instruments
PowerScout HD
Verification of Installation
PhaseChek™ is only applied for elements that are enabled. VIEW METER SETUP on the LCD
screen can be used to ensure that all intended elements are active. PhaseChek™ is advisory
only. It is possible that the power factor for a particular load is truly less than 0.55, as may be
observed in a free running motor.
Once the PSHD meter is configured and communicating with the RTU, 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 these cases.
INSTALLATION PHASE VERIFICATION
The PSHD meter includes a PhaseChek™ algorithm that identifies any element that the meter suspects
may be incorrectly phased (i.e., the CT is associated with the wrong voltage source or is physically on the
wrong wire) based on power factors below 0.55. This feature is accessed using the LCD interface by
navigating to “VERIFY INSTALLATION” and pressing the ENTER button. The LCD display will list the
elements having at least one channel with a low power factor.
CHECK ELEMENTS
A EF
Use the navigation buttons to highlight a specific element and hit enter or just hit enter and move from
element to element using the / keys. Within each element (identified on the top line of the
display) the status of each channel is identified as good (PF > 0.55) or bad (PF < 0.55).
ELEMENT F
CH1 Good
CH2 Bad
CH3 Bad
Two “Bad” channels are often an indication that two CTs are inadvertently swapped. When the power
factor for all enabled channels is greater than 0.55, the meter reports:
CHECK ELEMENTS
ALL CHANNELS GOOD
The ViewPoint HD and the PSHD Web App run PhaseChek™ continuously on all enabled elements and
report low power factor in the real time values table by turning the text RED or by a using a red
indicator.
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Communication & Verification
DENT Instruments
PowerScout HD
PHASE CHECKING BY PHASOR PLOT
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. In the latter case, this usually causes a significant decrease in the reported power factor, even if
the CT is also on backwards. When the absolute displacement power factor of a load is below 0.55 (an
angle greater than 57 degrees between voltage and current), the PSHD meter will flag it as a phasing
error. ViewPoint HD has a PhasorPlot feature that can be used to study the voltage and current vectors
of a given meter element.
Check for Low Power Factor
▪ ViewPoint HD: Real Time Values > (All power factors < 0.55 are shown in RED)
▪ PSHD Web App: 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)
Electrical Power Quadrants with Incorrect CT Phase shown
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Communication & Verification
DENT Instruments
PowerScout HD
CT Orientation Check
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, 2234, and 2235 or use ViewPoint HD’s meter setup.
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.
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)
▪ PSHD Web App: Real Time Values > (Confirm Sign of Power For All Elements)
▪ LCD: Real Time Values > (Confirm Sign of Power for Each Element)
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RTU Programming & Scripting
DENT Instruments
PowerScout HD
Power Factor Convention
Power Factor is the ratio of a signed number (true power) and an unsigned number (apparent power).
This discrepancy has led to some customer confusiuon. The PSHD meter allows users to select between
two conventions (ANSI & IEEE). In the IEEE convention the sign of PF follows the sign of power itself. In
the ANSI convention a “+” PF indicates a lagging current (inductive load) while a “–“ PF indicates a
leading current (capacitive load). The sign relationships are shown below for these conventions in each
electrical quadrant.
Total Harmonic Distortion
The PSHD meter reports overall harmonic content in power (% THD) based on it’s measurement of
Power, Var and Apparent Power as illustrated in the figure below. This method cannot indicate the
harmonic number or distribution but provides the overall harmonic content.
In many circumstances users are interested in the harmonic content of current. In cases where the
voltage is very sinusoidial the THD measurement is a good estimate of both power and current.
However, if the voltage waveform is distorted the reported THD in power can be misleading. ViewPoint
HD can provide additional analysis of harmonic content in voltage and current by sampling the PSHD raw
data and performing digital signal processing on the signal. Using this method the individual harmonics
levels can be observed. The results are presented in graphical form.
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DENT Instruments
PowerScout HD
RTU Programming & Scripting
Pre-Processing Aids
The PSHD has several registers that can aid in pre-processing or post-processing data that otherwise
may need seconday operations.
SNAP THRESHOLDS
The signal to noise ratio of the PSHD is above 80 db at full scale (1 part in 10,000). When the signal
amplitude becomes so small that it is indistinguishable from noise it is often better to record 0 than a
small random value. Snap Threshold registers (Advanced tab in ViewPoint HD) tell the meter when to
record 0 instead of the measurement result. The factory defaults for CT’s are expressed in percent and
have a default value of 0.04% Full Scale. The voltage thresholds are in absolute value, the
recommended minimum voltage is 1.0 volt
MULTIPLIERS
The PSHD has registers that allow potential transformers and series current transformers to be used
with the PSHD meter. These registers allow for transformer winding ratios or other scaling adjustments
to be included in the meter processing to eliminate post process scaling. Adjustments for voltage are
global to the meter while CT’s can be adjusted on a channel by channel basis. The multiplier is a
floating-point number and can also be used for post installation calibration if desired. Default values are
1.0
CT PHASE SHIFTS
Current transformers like all other transformers experience a small magnetizing current that is out of
phase with the measurement current. Phase shift registers are available on a per channel basis and
allow corrections of +/- 3 degrees. Viewpoint HD loads the default phase shift for the CT types available
in the picker list. If no phase shift information is available then enter the accuracy class in degrees (i.e.
1% = 1.0 degree).
DEMAND
PSHD meters keep track of electrical demand using a 15 minute sliding window. The Peak Demand and
Present Demand registers contain the highest average power consumption in any 15 minute interval and
the average power consumption in the last 15 minnute interval respectively. The Clear Peak Demand
register is used to reset the peak demand detector.
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DENT Instruments
PowerScout HD
RTU Programming & Scripting
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 Waveform Capture Registers
The complete register set is included as an Excel file on the supplied thumb drive or at:
HTTPS://WWW.DENTINSTRUMENTS.COM/TECHNICAL-DOCUMENTS/POWERSCOUT
ELEMENT VS SYSTEM SCOPE
Element
The term “element” is used in two contexts. Physically the term Element is used to describe groups of
three channel sections identified by alphabetic letter on the silk screen of the PCBA (ie A,B,C,D). In a
three phase power system these correspond to electric circuits. Logically the term Element describes
the scope of a data item, register or point (Modbus register or BACnet object). Each Element based
point is accessed by choosing the appropriate Modbus address, BACnet object range, or BACnet
structured view. Elements in turn have points that refer to individual channels or to SUMS or AVERAGES
of those channels. 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. In a BACnet structured view an
Element represents a level of organization for related points.
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.
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DENT Instruments
PowerScout HD
RTU Programming & Scripting
System
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 RōCoil [2]
Any > 0A
-3.0˚ to +3.0˚
Any > 0 [1]
0 or 1
CH2
L2 – N [2]
mV [1] or RōCoil [2]
Any > 0A
-3.0˚ to +3.0˚
Any > 0 [1]
0 or 1
CH3
L3 – N [3]
mV [1] or RōCoil [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
Channels
Volt Ref
CT Type
Range
Phase
Shift
CT Multiplier
CT Sign
CH1
L1 – N [1]
mV [1] or RōCoil [2]
Any > 0A
-3.0˚ to +3.0˚
Any > 0 [1]
0 or 1
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. Under BACnet structured view the
system points are grouped together.
CONFIGURING ELEMENT AND CHANNEL REGISTER FOR SERVICE TYPES
The ViewPoint HD 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
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DENT Instruments
PowerScout HD
RTU Programming & Scripting
CH2
L2 – N [2]
mV [1] or RōCoil [2]
Same as 1
Same as 1
Same as 1
0 or 1
CH3
L3 – N [3]
mV [1] or RōCoil [2]
Same as 1
Same as 1
Same as 1
0 or 1
Even though CH2 is calculated internally, it is recommended that the CT settings reflect those from CH1, rather than being left at factory default,
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 RōCoil [2]
Any > 0A
-3.0˚ to +3.0˚
Any > 0 [1]
0 or 1
CH2
ANY [1-6]
mV [1] or RōCoil [2]
Any > 0A
-3.0˚ to +3.0˚
Any > 0 [1]
0 or 1
CH3
ANY [1-6]
mV [1] or RōCoil [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 RōCoil [2]
Any > 0A
-3.0˚ to +3.0˚
Any > 0 [1]
0 or 1
CH2
L2 – N [2]
mV [1] or RōCoil [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
to facilitate configuration validation from the RTU.
Any channel that needs to be turned OFF should set the CT Type to OFF.
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 i s 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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DENT Instruments
PowerScout HD
RTU Programming & Scripting
Description
31 Char
PF Sign Convention
ANSI [1] or IEEE[2]
V1 Multiplier
Any > 0 [1]
V2 Multiplier
Any > 0 [1]
Modbus Protocol Commands
Supported Modbus Commands
Command Name
Command Number (Hex)
Description
Read Holding Registers
03
Used to read the data values from the PSHD meter
Write Single Register
06
Used to write a single holding register to a PSHD meter
Report Slave ID
11
Used to read information from the identified PSHD meter
If configured for Modbus, the PSHD networked power meter family follows the Modbus RTU protocol
and supports the following command set.
SLAVE ADDRESS
For Modbus/TCP the base slave address (or “unit address” as the Modbus TCP spec. calls it) is fixed at 1.
Refer to the section “Serial Protocols” for additional information on setting the Slave Address and
finding the address of a specific meter element.
MODBUS STRING ENTRY
Registers that are identified as “strings” are handled uniquely by the PSHD power meter. Each register
in the string block must be written to sequentially without interruption either by using a “write multiple”
command or by sending single register commands back to back. The final character in the string MUST
be a NUL character (ASCII 0). The meter will process the entire string only if these two conditions are
met, otherwise the data is ignored. This special processing has been implemented to protect partial
updates for network settings.
COMMANDS REQUIRING A PROCESSOR RESET
Register manipulation of communication protocols or addressing require that the PSHD perform a “soft
reset” in order to take effect. Register 2100 can receive a user command to facilitate this process.
BACnet users write a “1” and Modbus users write “1234” to effect a soft reset. The PSHD reboot time is
approximately 10 seconds.
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
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DENT Instruments
PowerScout HD
RTU Programming & Scripting
BACnet
Serial
The PSHD Serial version supports writable max_master, MS/TP address, 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 MS/TP address (object 1069) must be unique on
the MS/TP network. The max_info_frames does not need to be changed in most installations.
Ethernet
Ethernet versions can register as Foreign Devices to a BBMD. BBMD stand for BACnet/IP Broadcast
Management Device. The BBMD IP address can be set from VIewpointHD or through character string
object 2264. A value of 0.0.0.0 disables foreign device registration. This process requires a processor
soft reset.
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
BACNET STRUCTURED VIEW
The PSHD meter supports the Structured View (SV) object container. If this option is supported in the
BACnet exploring tool, objects will be grouped logically into elements which can be named to reflect
electrical or physical locations, followed by system objects, as shown below for a PS12 having elements
A-D.
Within each element, Structured View lists the BACnet objects by Object Type and then by numeric
number as shown below. In addition objects for elements are grouped in a “hotel room” scheme. That is
Element A (and system objects) have a range from 0-9999, Element B 10000-19999, Element 2000029999, to Element P on the PS48HD 150000-15999. Some BACnet explorer tools have additional sorting
capabilities.
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DENT Instruments
PowerScout HD
RTU Programming & Scripting
PSHD Supported BACnet Object Types
Object Type
Abbr
Typical Usage
Analog Input:
AI
Meter Readings (floating point numeric inputs)
Analog Value:
AV
Analog User Settings (floating point numeric outputs)
Binary Value:
BV
User Boolean Settings
Multi State Value:
MSV
Enumerated Settings
BitString Value:
BSV
Bitfield Status Words and Settings
Positive Integer Value:
PIV
Restricted Range User Settings
Character String Value:
CSV
User Text string settings
The following online BACnet resources are also helpful.
http://www.bacnet.org/
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DENT Instruments
PowerScout HD
Appendix A
APPENDIX A—PSHD LCD MENU NAVIGATION
ABOUT METER
The complete LCD navigation map is shown in diagram form in the next few pages. The “About Meter” menu
is the most commonly accessed item which requires 5 down presses or 1 up (rolling menu) to access.
The “About Meter” menu contains the following items which are displayed 4 lines at a time and accessed by
using the ˄ ˅ keys on the front display.
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DENT Instruments
PowerScout HD
Appendix A
MENU NAVIGATION
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DENT Instruments
PowerScout HD
Appendix A
COMMUNICATION NAVIGATION
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DENT Instruments
PowerScout HD
Appendix B
APPENDIX B—ENCLOSURE DIMENSIONS
PS48HD Enclosure Dimensions PS12HD Enclosure Dimensions
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DENT Instruments
PowerScout HD
Appendix C
APPENDIX C—MOUNTING TEMPLATES
Enclosure Internal Mounting Hole Locations
PS48HD and PS12HD Enclosure Drill Templates
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Appendix C
DENT Instruments
PowerScout HD
Sheet Metal Plate Mounting Hole Locations
PS48HD and PS12HD Mounting Plate Drill Templates
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DENT Instruments
PowerScout HD
Appendix D
APPENDIX D—PSHD TECHNICAL SPECIFICATIONS
Specification
Description
Service Types
Single Phase, Split Phase, Three Phase-Four Wire (WYE), Three Phase-Three Wire (Delta)
Voltage Channels
90-346 Volts AC Line-to-Neutral, 600V Line-to-Line, CAT III.
Two voltage reference inputs (PS48HD only)
Current Channels
12 (PS12HD) or 48 (PS48HD) channels, 0.525 VAC max, 333 mV CTs, 0-4,000 Amps
depending on current transducer
Maximum Current Input
150% of current transducer rating (mV CTs) to maintain accuracy. Measure up to 4000A
with RōCoil CTs.
Measurement Type
True RMS using high-speed digital signal processing (DSP) with continuous sampling
Line Frequency
50-60 Hz (45 – 70 Hz measureable range) – measurement taken L1-N
Power
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.
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
Interval Data Recording
Energy (kWh) values are recorded every 15 minutes for 63 days (downloadable log)
Each record is time stamped.
Measurements
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
Optional 4-line display, tri-color backlight (PhaseChek™)
Alarm Output
Over/Under Voltage & Current (SPDT Relay - 30 VDC)
Pulse Inputs
PS12HD – 4 inputs
PS48HD – 2 inputs **
3.3V sourcing voltage (current limited) to customer dry contact pulse output
Maximum Pulse Rate 10 HZ (50 msec minimum transition time)
** Available Q4 2018
Communication
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Appendix D
DENT Instruments
PowerScout HD
Specification
Description
Hardware
RS-485, Ethernet, & USB (for configuration only)
Supported Protocols
Modbus RTU or BACnet Master Slave Token Passing protocol (MS/TP)
Modbus (using SunSpec IEEE-754 single precision floating point model)
Max Communication Length
1200 meters with Data Range of 100K bits/second or less
RS-485 Loading
1/8 unit
Communication Rate (baud)
9600 (Default), 19200, 38400, 57600, 76800, 115200
Data Bits
8
Parity
None, Even, Odd
Stop Bit
2, 1
Termination
None provided
Data Formats
Modbus RTU, BACnet MS/TP, Modbus TCP or BACnet IP
Mechanical
Wire Connections
12-22 AWG 600 VAC, Voltage connection must be #14 AWG or larger & 600 VAC rated
Mounting
Enclosure or Panel Mount
High Voltage Cover
IP30. Available with PS48/PS12 Enclosure and PS48 Plate models
Operating Temperature
-20 to + 60⁰ C (-4 to 140⁰ F) (the colder the temperature the more voltage needed to
power the board)
Humidity
5% to 95% non-condensing
Enclosure
ABS Plastic, 94-V0 flammability rating, connections sized for 1–inch EMT conduit
PS48 Dimensions
(L) 33.7cm x (W) 25.1cm x (H) 8.0 cm (13.3” x 9.8” x 3.1”) (enclosure version)
(L) 26.2cm x (W) 24.1cm x (H) 8.0 cm (10.3” x 9.5” x 3.1”) (mounting plate version)
PS12 Dimensions
(L) 24.8cm x (W) 25.1cm x (H) 8.0 cm (9.8” x 9.8” x 3.1”) (enclosure version)
(L) 17.8cm x (W) 26.3cm x (H) 8.0 cm (7.0” x 10.4” x 3.1”) (mounting plate version)
PCBA Dimensions
(L) 21.6cm x (W) 21.6cm 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
USB or Ethernet connectivity
Safety
FCC Compliance
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
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Appendix D
DENT Instruments
PowerScout HD
Specification
Description
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
user will be required to correct the interference at user’s own expense.
Serial/Ethernet Meters
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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