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DENT Instruments PowerScout 24 Operator's Manual

Power meter and viewpoint software
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Operator's Guide
PowerScout™ 24
Power Meter
and
ViewPoint™
Software
June 1, 2016

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Summary of Contents for DENT Instruments PowerScout 24

  • Page 1 Operator’s Guide PowerScout™ 24 Power Meter ViewPoint™ Software June 1, 2016...
  • Page 2 Operator’s Guide: PowerScout™ Power Meters ©2016 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® Vista, Windows® 7, Windows® 8, Windows® XP, and Notepad® are registered trademarks of Microsoft Corporation.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Introduction ........................6 PowerScout 24 Serial/PowerScout 24 Ethernet ................6 Unpacking the Unit .......................... 6 Meter Anatomy ..........................8 PowerScout Meter Safety Summary and Specifications ..............9 Symbols on Equipment ........................9 PowerScout Résumé de Sécurité et Spécifications ................ 12 Symboles des Equipements ......................
  • Page 4 A Typical 230V Single-Phase Panel Setup (US Wire Colors) ..........46 A Typical 115V Single-Phase Panel Setup ................. 47 System Values ........................47 PowerScout 24 Wiring Diagrams ....................48 Three Wire Delta ........................48 Three Phase, Four Wire Delta (Wild Leg) ................49 Single Phase, Two Wire ......................
  • Page 5 Baud Rate Communications Error (RS-485 only) ............101 Port Error ........................101 Firmware Update Fails ....................101 Other Communication Failures (RS-485 only) ..............102 Appendix E—Meter Installation Final Checklist ................103 Frequently Asked Questions ................... 106 Glossary ......................... 108 Index ..........................110 DENT Instruments PowerScout 24...

  • Page 6: Introduction

    It is typically used for long-term monitoring of electrical systems. Up to 127 PowerScout 24 meters may be connected to a single BACnet client for monitoring and recording power usage at multiple locations within a single site.
  • Page 7 Introduction Example of a COC for a PowerScout 24 DENT Instruments PowerScout 24...

  • Page 8: Meter Anatomy

    Introduction Meter Anatomy DENT Instruments PowerScout 24...

  • Page 9: Powerscout Meter Safety Summary And Specifications

    PowerScout Meter Safety Summary and Specifications These items conform to the following: This general safety information is to be used by both the Logger operator and servicing personnel. DENT Instruments, PS24 Series (except PS24Es): PS24-D-S/PS24-D-E Inc. assumes no liability for user’s failure Conforms to UL Std 61010-1, 2 to comply with these safety guidelines.
  • Page 10 2) UL and ANSI testing of the PowerScout was conducted on AC systems only. DC results are comparable but not tested. 3) DENT Instruments VIEWPOINT software does not currently have a configuration or registers that are specific to DC systems. Values reported for voltage, current, KW, KWH will be correct however it should be noted that the meter will also report values that pertain to AC systems (such as VARs and Power Factor) that should be ignored.
  • Page 11 Battery Life (If equipped): The lithium battery is only used to maintain the date and clock settings during power failure and has a life expectancy of greater than 10 years. Contact DENT Instruments for service. No accessories are approved for use with the PowerScout meter other than those specified in the DENT Instruments product literature and price sheets.

  • Page 12: Powerscout Résumé De Sécurité Et Spécifications

    Cette information de sécurité est destinée à être utilisée à la fois par l'opérateur de l'enregistreur et le personnel de service. PS24 Série (Sauf PS24Es): DENT Instruments, Inc n'assume aucune PS24-D-S/PS24-D-E responsabilité pour l'utilisateur qui ne Conforme à UL Std 61010-1, 2 respecte pas les directives en matière de...
  • Page 13 10 ans. Contactez DENT Instruments pour le service. Pas d'accessoires approuvés pour une utilisation avec le PowerScout sauf ceux spécifiés par DENT Instruments dans ses documentations sur les produits et également sur les prix.

  • Page 14: Powerscout 24 Technical Specifications

    Introduction PowerScout 24 Technical Specifications Specification Description Service Types Single Phase, Three Phase-Four Wire (WYE), Three Phase-Three Wire (Delta) 3 Voltage Channels 80-346 Volts AC Line-to-Neutral, 600V Line-to-Line, CAT III Current Channels 24 channels 0-5,000+ Amps depending on current transducer 200% of current transducer rating (mV CTs).
  • Page 15 The following are UL Recognized: PS24-N-S/ PS24-N-E Serial/Ethernet Meters The PS24 Series: Conforms to UL Std 61010-1, 2nd Edition Certified to CSA Std C22.2 No. 61010-1, 2nd Edition (CE does not apply to PS24 Ethernet) Table 1: Technical Specifications DENT Instruments PowerScout 24...

  • Page 16: Prepping For Field Installation

    All of DENT Instruments PowerScout meters use ViewPoint software to communicate with the meter. It needs to be installed on any computer talking to the PowerScout 24. ViewPoint is compatible with Windows® 7 (32 or 64 bit), Windows® 8 Pro, Vista (32 or 64 bit), or XP.

  • Page 17: Connecting A Communication Cable

    PowerScout meter and a logger is established with a RS-485 or an Ethernet connection. A RS-485 connection is limited in speed while an Ethernet connection is much faster. NOTE: PowerScout meters are ordered from DENT Instruments based on the type of desired connection. RS-485 A...

  • Page 18: Installing The Rs-485 Adapter On A Computer

    The window states “This wizard helps you install software for: Model USOPTL4,” and asks “What do you want the wizard to do?” 4) Select Install the software automatically and click Next. 5) Click Finish when the installation is complete. 6) Remove the CD from your computer. DENT Instruments PowerScout 24...

  • Page 19: Connecting The Adapter To The Meter

    RS-485 adapter are set to RS-485, Echo Off, 2 Wire, 2 Wire as shown in Figure II-2 before plugging the adapter into the PowerScout. Figure 2: Dip switches on back of RS-485 Adapter Figure 1: RS-485 Adapter Figure 3: RS-485 Connector on PS24 DENT Instruments PowerScout 24...
  • Page 20 Default settings are used for the two remaining fields: Data Bits is 8N1 and the Baud Rate is 9600. When BACnet is selected as your protocol an additional read-only field appears displaying the BACnet Device ID and the default baud rate is 76800. DENT Instruments PowerScout 24...

  • Page 21: Setting The Network Address Switches

    Prepping for Field Installation Setting the Network Address Switches There are three rotary decimal network address switches on the PowerScout 24 used to select the BACnet/Modbus address the client uses to communicate with the PowerScout. Figure 4: Rotary Decimal Address Switches The BACnet MS/TP MAC and Modbus address is a decimal value, represented by three digits: 000 through 009, 010-090, and 100-999.

  • Page 22: Addressing An Element

    Table 3: Modbus Hexadecimal/Decimal Address Availability DDRESSING AN LEMENT The PowerScout 24 has eight elements. Modbus and BACnet each use different ways to designate an element on the PS24. In Modbus mode, the decimal network switches set the base address for metering element “A.”...

  • Page 23: Communication Error

    The meter will require power to communicate over Ethernet. Power can be supplied by connecting the USB or voltage lines 1 and 2. PowerScout 24 Ethernet Module Figure 5: Ethernet Module Keep in mind that the Ethernet connection must have an IP Address in the ViewPoint software that can...

  • Page 24: About Ip Addresses

    DHCP option is that the “lease” of the IP address may expire after a period of time and the router could assign a different IP address. A new IP address means that ViewPoint cannot connect to the meter until the new IP address has been entered. (See below.) DENT Instruments PowerScout 24...
  • Page 25 DHCP (Dynamic Host Configuration Protocol) and the meter is configured to request an address. Click Update Logger after making your selections. ViewPoint displays the following message when the connection is successful: DENT Instruments PowerScout 24...

  • Page 26: Communications Leds

    Click OK to close the dialog box without updating. -or- Click Download to begin the updating process. The DENT Instruments Tech Support Downloads website appears with a link to the download. Once you have the file downloaded to your computer, use the Firmware tab to download the file to the meter.

  • Page 27: Meter Setup

    The Meter Setup screen is blank when first accessed. Click Retrieve Meter Setup to view the current status of the elements. The Element Status dialog box displays while each element is read. DENT Instruments PowerScout 24...

  • Page 28: Entering Wiring Information For An Element

    1) Select WYE, DELTA, or Single Phase as the wiring connection. NOTE: DENT Instruments recommends using 3 CTs in a WYE connection for Delta loads. A WYE connection automatically displays all three CTs. Any changes made to CT1 also apply to CT2 and CT3.
  • Page 29 Prepping for Field Installation The following table shows the recommended CT Phase Shift for various DENT Instruments CTs: Current Transformers Recommended CT Phase Shift Values Clamp On CT-CON-0150EZ 1.10° CT-CON-1000 0.20° Split Core Small CT-SCS-0050 2.20° CT-SCS-0100 2.20° Split Core CT-SCM-0100 1.75°...

  • Page 30: Selecting A Scalar

    After selecting a data scalar, the formula for calculating the actual value is: register value X scalar value = actual value Or, another way to state this formula is: actual value/scalar value = register value DENT Instruments PowerScout 24...

  • Page 31: Examples Using A Data Scalar

    Reviewing this example using the data scalar 3 value of .1 provides the following result: 1,440kW/.1 = 14,400 Since 14,400 is less than 65,535, using data scalar 3 is a good choice for this example. DENT Instruments PowerScout 24...

  • Page 32: Values Requiring Two Registers

    RS-485 then only those fields are shown. However, if you are connected with a USB cable all fields are displayed. Changes to these fields override any settings on the Communications tab. DENT Instruments PowerScout 24...

  • Page 33: Settings

    Change the ViewPoint hardware settings and click Connect again. ViewPoint fills the Device Info fields when the computer communicates with the PowerScout. PowerScout meter installation can be verified using the ViewPoint software. Refer to Using ViewPoint Software further in this document for more information. DENT Instruments PowerScout 24...

  • Page 34: Establishing Communication Protocol

    “00” will set the unit in Modbus protocol, 9600 baud rate. If communication fails, see the section Changing Baud Rate or Communication Mode using Address Switches (between Modbus and BACnet) on the next page. DENT Instruments PowerScout 24...

  • Page 35: Changing The Powerscout From Modbus To Bacnet Mode

    3) Enter 10190 into the Object field or click List to select from the Object Picker List. 4) In the Value field, enter 375 to change to Modbus mode. 5) Click OK. The status should say “Writing Value…” Return to the Communications tab and connect. DENT Instruments PowerScout 24...

  • Page 36: Changing Baud Rate Or Communication Mode Using Address Switches (Between Modbus And Bacnet)

    Modbus Address selector if in Modbus mode or MAC address if in BACnet mode. FAILSAFE: If all address switches are “0,” the meter is placed in Modbus mode at 9600 baud rate. Communication registers can be modified for baud rate and for mode. DENT Instruments PowerScout 24...

  • Page 37: Field Installation

    PowerScout meters must be installed in an approved electrical panel or enclosure using proper installation practices according to the local electrical codes. The raw board of the PowerScout 24 meter can be mounted to customer-provided standoffs or placed into a NEMA (National Electrical Manufacturers Association) box. A NEMA-rated box is available through DENT Instruments.

  • Page 38: Wiring Connections On A Powerscout Meter

    Haute tension peut être présente. Risque de choc électrique. Tensions dangereuses peuvent être présentes. Personnel qualifié uniquement. PowerScout 24 meters have the following connections: Either a three-wire connector for the RS-485 BACnet/Modbus link or an Ethernet connector. Four voltage connections, but the leads are customer supplied.

  • Page 39: Using The Pulse Output Port Function

    Pulse output is used to generate pulses for external devices such as data loggers that can accept pulses but do not have BACnet or Modbus capability. The PowerScout 24 can generate pulses based on accumulated value(s) such as system kWh, system kVARh, and system kVAh. When a pulse is generated by the meter, the pulse LED will briefly flash, otherwise it will remain dark.

  • Page 40: Modbus Output Port Registers

    Turns pulses on/off 44008 = System kVARh pulses 44011 = System kVAh pulses 0 = normally open (HIGH) 15010 Port 1 pulse output relay type 1 = normally closed (LOW) Table 14: BACnet Digital Port Pulse Output DENT Instruments PowerScout 24...

  • Page 41: Wiring Cts

    The CT labeled CT 1 must be placed on L1 phase voltage wire, CT 2 must be on the L2 ™ voltage and CT 3 on the L3 voltage. Refer to PhaseChek later in this section for information about the CT LEDs and verifying the CT installation. DENT Instruments PowerScout 24...

  • Page 42: Connecting Split-Core Style Millivolt Cts To A Load

    3) Carefully re-connect the removable leg while ensuring the CT core alignment matches. The conductor should be in the inside of the CT window. 4) Repeat Steps 1-3 if you are using more than one CT. DENT Instruments PowerScout 24...

  • Page 43: Connecting Rōcoil Cts To A Load

    2) Connect the CTs white wire to the positive terminal on the connector. 3) Connect the bare shield wire from the RōCoil to the “S” shield terminal that is part of the connector. This reduces interference and improves accuracy of the CT. DENT Instruments PowerScout 24...
  • Page 44 Field Installation Positive Negative Shield Connecting RōCoil CTs Mini-hinged CTs attached to load DENT Instruments PowerScout 24...

  • Page 45: Ct Wire Lead Polarity

    Follow local electrical codes during this installation. b) IMPORTANT: Verify the breaker is marked as the disconnect breaker for the meter. NOTE: Refer to the Safety Summary in the Introduction section for information on DC voltage connections. DENT Instruments PowerScout 24...

  • Page 46: Powering The Meter

    L2 voltage source, then CT3 could monitor any L2 branch circuit. Or, if the Blue L3 voltage lead was connected to L1 voltage source, CT3 could monitor any L1 branch circuit. DENT Instruments PowerScout 24...

  • Page 47: A Typical 115V Single-Phase Panel Setup

    System values are the sum of L1 + L2 + L3 measurements. System values may not be meaningful since two different devices or loads can be monitored by a single PowerScout element. When paired with the right voltage phase, each CT provides individual kW/kWh readings for that CT channel. DENT Instruments PowerScout 24...

  • Page 48: Powerscout 24 Wiring Diagrams

    Field Installation PowerScout 24 Wiring Diagrams The following diagrams use a PowerScout 24 board for illustration. HREE ELTA Use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration.

  • Page 49: Three Phase, Four Wire Delta (Wild Leg)

    Field Installation HREE HASE ELTA Use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration. DENT Instruments PowerScout 24...

  • Page 50: Single Phase, Two Wire

    For a Wye connection, use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration. For a Single Phase connection, use a Service Type 2 value for BACnet Object 12080 or a 2 value for Modbus Register 44607 on this wire configuration. DENT Instruments PowerScout 24...

  • Page 51: Single Phase, Three Wire

    For a Wye connection, use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration. For a Single Phase connection, use a Service Type 2 value for BACnet Object 12080 or a 2 value for Modbus Register 44607 on this wire configuration. DENT Instruments PowerScout 24...

  • Page 52: Four Wire Wye

    Field Installation Use a Service Type 0 (zero) value for BACnet Object 12080 or a 0 (zero) value for Modbus Register 44607 on this wire configuration. DENT Instruments PowerScout 24...

  • Page 53: Verifying Installation With Phasechek

    CT 2 and CT 3 are reversed. Switch the position of the CTs flashing red. CT 1 and CT 2 are reversed. Switch the position of the CTs flashing red. Patent No. 7,612,552. U.S. Patent and Trademark Office. DENT Instruments PowerScout 24...
  • Page 54 CT 3 is swapped with either CT 1 or CT 2. -or- Switch CT 3 with CT 2. CT 1 and CT 3 are reversed. Switch the position of the CTs flashing red. Table 16: PhaseChek LED Error Resolution DENT Instruments PowerScout 24...

  • Page 55: Verifying Installation With The Viewpoint Software

    This indicates the PowerScout setup is correct. It may also be useful to use a handheld amp meter to test the current and compare its readings to the values provided on the Real-Time Values screen. DENT Instruments PowerScout 24...

  • Page 56: Read/Write Registers-Read/Set Objects

    Objects screen. 2) Click Read to see the current value. 3) Enter a new value in the New Value field. 4) Click Write to change to the new value. 5) Click Clear Totals to clear accumulated data. DENT Instruments PowerScout 24...

  • Page 57: Resetting Bacnet Objects/Modbus Registers

    In ViewPoint, accumulating objects/registers can be reset using the Read/Set or Read/Write tab. Click Clear Totals at the bottom of the screen. See the tables in the Appendices for a list all of the objects/registers available on the PowerScout meters. DENT Instruments PowerScout 24...

  • Page 58: Firmware

    Field Installation IRMWARE Firmware updates are available from DENT Instruments, contained in a zip file that can be downloaded, unzipped and installed using ViewPoint 4.0 or later. The Firmware screen verifies the current firmware version and updates the PowerScout internal firmware. When not connected via USB, updating firmware is only supported in Modbus mode.
  • Page 59 ViewPoint also checks for new versions of the ViewPoint application. When ViewPoint starts, it can automatically contact the DENT Instruments web site to get the latest versions available. It only checks online when running for the first time, or if it has been 7 days since the last check. If there is a new version, the version number of the new release is displayed.

  • Page 60: All Things Modbus

    PowerScout data (kWh, kWh, etc) stored in flash to CAM Default value 44526 4525 Slave ID !1=DENT, 1=Veris; Sets SLAVE_ID to Veris or DENT A Value of 0-6 that changes the scaling of certain 44602 4601 Data Scalar registers DENT Instruments PowerScout 24...
  • Page 61 (e.g., kW). Whole numbers only. 50125 10124 CT1 Type Select 1=mV or 2=Rogowski CT1s 50199 10198 CT1 Phase Shift Phase Shift X 100 +/- 50200 10199 CT2 Integer Integer part of CT2 50201 10200 CT2 Decimal Fractional part of NV_CT2 DENT Instruments PowerScout 24...

  • Page 62: Pulse Output/Input Registers

    3 = both edges pulse counter increments. If pulse output is enabled, it is disabled when this configuration is set. (Note when pulse is off, I/O control is enabled) I/O port 1 pulse input 45101 5100 Scaled pulse LSW accumulator LSW DENT Instruments PowerScout 24...
  • Page 63 44001 = System kWh pulses Turns pulses on/off 44008 = System kVARh pulses 44011 = System kVAh pulses 0 = normally open (HIGH) 45311 5310 Port 1 pulse output relay type 1 = normally closed (LOW) DENT Instruments PowerScout 24...

  • Page 64: Absolute Measurement Registers

    System Displacement Power Factor (PF). Register is 44014 4013 Displacement PF System 100x actual value. System Apparent Power Factor (PF). Register is 100x 44015 4014 Apparent PF System actual value. 44016 4015 Amps System Avg Average of all phases. DENT Instruments PowerScout 24...
  • Page 65 L2 LSW “ 44035 4034 kVARh L2 MSW “ 44036 4035 kVARh L3 LSW “ 44037 4036 kVARh L3 MSW “ 44038 4037 kVAR L1 Individual Phase Reactive Powers (kVAR) 44039 4038 kVAR L2 “ DENT Instruments PowerScout 24...
  • Page 66 Volts L1 to Neutral Individual Phase to Neutral Voltages (V) 44060 4059 Volts L2 to Neutral “ 44061 4060 Volts L3 to Neutral “ 44062 4061 Time Since Reset LSW Seconds since KWH register was reset. LSW DENT Instruments PowerScout 24...

  • Page 67: Positive Power/Energy Measurement Registers

    System Positive True Energy MSW (kWh, resettable) 46003 6002 Positive kW System System Positive Instantaneous Positive True Power (kW) (net sum of all individual kWs, if sum is negative value=0) 46004 6003 kW Demand System Max System Maximum Demand (peak demand). DENT Instruments PowerScout 24...
  • Page 68 (44015) is positive, this register will contain that value else it will be zero) 46016 6015 Amps System Avg Average of the current in all phases. 46017 6016 Volts Line to Line Avg Average of the system line to line voltages. DENT Instruments PowerScout 24...
  • Page 69 Positive kW L2 “ 46031 6030 Positive kW L3 “ 46032 6031 Positive kVARh L1 LSW Individual Phase Positive Reactive Energy LSW (kVARh, resettable) 46033 6032 Positive kVARh L1 MSW Individual Phase Positive Reactive Energy MSW (kVARh, resettable) DENT Instruments PowerScout 24...
  • Page 70 (dPF); Register is 100x actual value (If the Individual dPF (44050) is positive, this register will contain that value else it will be zero) 46051 6050 Positive Displacement PF L2 “ 46052 6051 Positive Displacement PF L3 “ DENT Instruments PowerScout 24...
  • Page 71 System Maximum kVAR Demand (kVAR, resettable). It displays the default value after a CAM until 1 demand window elapses. After a power cycle or CPU reset the value is not reset but it does not update again until 1 demand window elapses. DENT Instruments PowerScout 24...

  • Page 72: Negative Power/Energy Measurement Registers

    System Instantaneous Apparent Power (kVA) 47014 7013 Negative Displacement PF System Negative Displacement Power Factor (dPF); System Register is 100x actual value (If the System dPF (44014) is Negative, this register will contain that value else it will be zero) DENT Instruments PowerScout 24...
  • Page 73 Individual Phase Negative True Energy MSW (kWh, resettable) 47025 7024 Negative kWh L2 LSW “ 47026 7025 Negative kWh L2 MSW “ 47027 7026 Negative kWh L3 LSW “ 47028 7027 Negative kWh L3 MSW “ DENT Instruments PowerScout 24...
  • Page 74 L2 LSW “ 47044 7043 kVAh L2 MSW “ 47045 7044 kVAh L3 LSW “ 47046 7045 kVAh L3 MSW “ 47047 7046 kVA L1 Individual Phase Instantaneous Apparent Powers (kVA) 47048 7047 kVA L2 “ DENT Instruments PowerScout 24...
  • Page 75 7062 Time Since Reset MSW Seconds since CAM. MSW (Seconds) 47080 7079 Negative kW System Average Equals Negative KWH_SYSTEM_L&M ÷ (TimeSinceReset_L&M seconds /3600 seconds/Hr) (resettable) 47081 7080 kW Demand System Minimum Min Average power window (kW) DENT Instruments PowerScout 24...

  • Page 76: Net Measurement Registers

    Positive of the NET L1 True Energy LSW (kWh) 46153 6152 KWh L1 NET POS MSW Positive of the NET L1 True Energy MSW (kWh) 46154 6153 KWh L2 NET POS LSW Positive of the NET L2 True Energy LSW (kWh) DENT Instruments PowerScout 24...
  • Page 77 Negative of the NET L2 True Energy MSW (kWh) 47156 7155 KWh L3 NET NEG LSW Negative of the NET L3 True Energy LSW (kWh) 47157 7156 KWh L3 NET NEG MSW Negative of the NET L3 True Energy MSW (kWh) DENT Instruments PowerScout 24...

  • Page 78: Protocol Commands

    First register to read – low order bits Number of registers to read – high order bits Number of registers to read – low order bits CRC low order bits CRC high order bits Table 18: Format for Modbus Command 03 DENT Instruments PowerScout 24...
  • Page 79 The response is from the PowerScout at address 37. Two bytes were read from the requested register, 000C. The value of the registers read was 0000. The CRC value was 4070. The number of registers read must be between 1 and 125 inclusive. DENT Instruments PowerScout 24...

  • Page 80: Write Single Register

    The response is from the PowerScout at address 37. One byte was written to at the requested register, 0000. The value written was 0000. The CRC value was 5C8C. An echo of the original command after the contents are written is a valid response. DENT Instruments PowerScout 24...

  • Page 81: Report Slave Id

    Table 23: Example for Modbus Command 11 (17 in decimal) Slave ID The PowerScout uses the following default format for the slave ID: DENT Instruments PowerScout 24, Serial Number, FW Rev Major Revision. Minor Revision, Scalar X Example: DENT Instruments PowerScout 24, PS3912001, FW Rev 1.0, Scalar 3 NOTE: See VERIS H8035/H8036 Emulation for slave ID structure while in Veris emulation.

  • Page 82: All Things Bacnet

    Hardware ID Hardware revisions 10090 Features New features 10150 PowerScout Element ID Used for ViewPoint to determine which element is being read & total number of elements available. Element index multiplied by 256 + number of elements. DENT Instruments PowerScout 24...

  • Page 83: Configuration Objects

    Parity: Add 00 = NO, Add 10 = ODD, Add 20 = EVEN Stop bit: Add 0 = 1 (UART does not permit 0 stop bits), Add 1 = 1, Add 2 = 2 E.g., 901 = 9600 baud, no parity, 1 stop bit DENT Instruments PowerScout 24...
  • Page 84 1=MilliVolt, 2=Rogowski 12132 CT2 Type 1=MilliVolt, 2=Rogowski 12133 CT3 Type 1=MilliVolt, 2=Rogowski 12134 CT1 Voltage Source Individual Phase Voltage Source 12135 CT2 Voltage Source Individual Phase Voltage Source 12136 CT3 Voltage Source Individual Phase Voltage Source DENT Instruments PowerScout 24...

  • Page 85: Pulse Output/Input Objects

    15000 44001 = System kWh pulses Turns pulses on/off 44008 = System kVARh pulses 44011 = System kVAh pulses 0 = normally open (HIGH) 15010 Port 1 pulse output relay type 1 = normally closed (LOW) DENT Instruments PowerScout 24...

  • Page 86: Absolute/Net Value Measurement Objects

    Volts Line to Line Average Voltage Line to line Average 3010 Volts Line to Neutral Average Voltage Line to neutral Average 3020 Volts L1 to L2 Individual Phase to Phase Voltages 3030 Volts L2 to L3 “ DENT Instruments PowerScout 24...
  • Page 87 System Total Reactive Energy (Unsigned/Absolute) 7000 kVAh System Total System Total Apparent Energy (Unsigned/Absolute) 8000 kVA System System Total Apparent Power (kVA). Unsigned absolute (ABS) value of ABS (kVA L1) + ABS (kVA L2) + ABS (kVA L3) DENT Instruments PowerScout 24...
  • Page 88 Apparent PF L1 Individual Phase apparent Power Factors (PF) 9180 Apparent PF L2 “ 9210 Apparent PF L3 “ 10000 Measured Line Frequency Line Frequency (Hz) 10010 Time Since Reset Seconds since accumulator registers were reset. DENT Instruments PowerScout 24...

  • Page 89: Positive Power/Energy Measurement Objects

    System Total Positive System Total Positive Apparent Energy (kVAh) (Signed Net) Accumulates only when kW is positive 7020 kVAh L1 Positive Individual Phase Apparent Energy (kVAh) (Signed) 7050 kVAh L2 Positive “ 7080 kVAh L3 Positive “ DENT Instruments PowerScout 24...

  • Page 90: Negative Power/Energy Measurement Objects

    L3 Negative “ 7002 kVAh System Total Negative System Total Negative Apparent Energy (Signed Net) 7030 kVAh L1 Negative Individual Phase Apparent Energy (kVAh) (Signed) 7060 kVAh L2 Negative “ 7090 kVAh L3 Negative “ DENT Instruments PowerScout 24...

  • Page 91: Appendices

    The BACnet/Modbus network administrator must assign a unique network address to each PowerScout 24 using the rotary switches SW1, SW2, and SW3. Other network layouts, i.e., star, are not recommended when using the RS-485 standard.

  • Page 92: Appendix B-Veris H8035/H8036 Emulation

    400A < CT ≤ 800A CT Value = 800A Veris Type = H8036-1600-4 800A < CT ≤ 1600A CT Value = 1600A Veris Type = H8036-2400-4 CT >1600A CT Value = 2400A Table 24: CT Amp Rating to VERIS Models DENT Instruments PowerScout 24...

  • Page 93: Veris Modbus Integer Registers

    " 40019 Volts L1 to Neutral Individual Phase to Neutral Voltages (Volts, Wye, 3 values) 40020 Volts L2 to Neutral " 40021 Volts L3 to Neutral " 40022 Amps L1 Individual Phase Currents (Amps, 3 values) DENT Instruments PowerScout 24...

  • Page 94: Veris Multipliers

    0.015625 0.03125 0.0625 0.125 40010 kW L1 0.001 0.004 0.008 0.016 0.032 40011 kW L2 0.001 0.004 0.008 0.016 0.032 40012 kW L3 0.001 0.004 0.008 0.016 0.032 40013 aPF L1 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 3.0518exp-5 DENT Instruments PowerScout 24...
  • Page 95 Table 25 must be multiplied by the scaling values listed in Table 26. For example, if the PowerScout has 100A CTs connected to it, the system reactive power (kVAR) is calculated by: Read register 40004 Multiply the value returned from register 40004 by 0.004 DENT Instruments PowerScout 24...

  • Page 96: Veris Modbus Floating Point Registers

    40277 VERIS Float kW L2 MSW Individual Phase True Power L2 MSW 40278 VERIS Float kW L2 LSW Individual Phase True Power L2 LSW 40279 VERIS Float kW L3 MSW Individual Phase True Power L3 MSW DENT Instruments PowerScout 24...
  • Page 97 VERIS Float Amps L1 MSW Phase Current L1 MSW 40300 VERIS Float Amps L1 LSW Phase Current L1 LSW 40301 VERIS Float Amps L2 MSW Phase Current L2 MSW 40302 VERIS Float Amps L2 LSW Phase Current L2 LSW DENT Instruments PowerScout 24...
  • Page 98 VERIS Float Demand System Minimum 40308 System Minimum Demand LSW VERIS Float Demand System Maximum 40309 System Maximum Demand MSW VERIS Float Demand System Maximum 40310 System Maximum Demand LSW Table 27: VERIS Modbus Floating Point Registers DENT Instruments PowerScout 24...

  • Page 99: Appendix C-Conversion Table

    Appendix C Appendix C—Conversion Table ECIMAL TO EXADECIMAL ONVERSION ABLE Some equipment use decimal Modbus addressing; the table below is useful for converting decimal addressing to hexadecimal addressing. Decimal Decimal Decimal Decimal Decimal Decimal DENT Instruments PowerScout 24...
  • Page 100 Appendix C Decimal Decimal Decimal Decimal Decimal Decimal Table 28: Decimal to Hexadecimal Conversion Table DENT Instruments PowerScout 24...

  • Page 101: Appendix D-Troubleshooting

    USB port. Check that the adapter is connected to a live USB port or move the USB cable to another USB port. Firmware Update Fails When the firmware update fails, select a slower baud rate and retry the update. DENT Instruments PowerScout 24...

  • Page 102: Other Communication Failures (Rs-485 Only)

    Check for wiring and cabling issues with the RS-485 adapter. Check for polarity, frayed wires, and/or pinched insulation. Verify that the dip switches on the back of the USB to RS-485 adapter are set to the following: Reboot the computer. Click Connect on the Communications tab to reestablish communications. DENT Instruments PowerScout 24...

  • Page 103: Appendix E-Meter Installation Final Checklist

    The following is a checklist to cover the majority of what needs to be considered or taken into account when installing a DENT Instruments power meter. It is not intended to be all encompassing as every scenario will be different.
  • Page 104 Communications with Meter Can communication be made to the meter? Final Are all cabinet doors, closed, locked, and all screws in panels tightened? Is all trash picked up, leaving site as clean as it was when arrived? DENT Instruments PowerScout 24...
  • Page 105 -0.06° Recommended CT Phase Shift Values If at any time you have questions or comments, please contact DENT Instruments for assistance. DENT Instruments | 925 SW Emkay Drive | Bend, Oregon 97702 USA Phone 541.388.4774 | Fax 541.385.9333 | www.DENTinstruments.com...

  • Page 106: Frequently Asked Questions

    How many PowerScout instruments can be connected together? Up to 127 PowerScout 24 meters can be connected together on a BACnet MS/TP network. Up to 30 PowerScout 24 meters can be connected together on a Modbus RTU network.
  • Page 107 How do I update the firmware in BACnet mode? If not using a USB connection, the PowerScout meter must be in Modbus mode in order to use ViewPoint to update the firmware (either through the software switch or the rotary switches). DENT Instruments PowerScout 24...

  • Page 108: Glossary

    Most significant bit (Modbus mode only) Most Significant Word. Unit of data with the high-order bytes at the left. DENT Instruments PowerScout 24...
  • Page 109 Root-Mean-Square. True RMS is the AC voltage/current that produces the equivalent amount of heat in a resistor as a DC voltage/current, whether sinusoidal or not. All DENT Instruments meters measure true RMS. RS-485 EIA-485 is used as the physical layer underlying many standard and proprietary automation protocols used to implement Industrial Control Systems, including BACnet/Modbus.

  • Page 110: Index

    ...............58 dynamic................ 24 firmware update fail ........... 101 static ................24 Four-wire Delta .............49 conversion table four-wire wye ..............52 decimal to hexadecimal ..........99 frequently asked questions .......... 106 C T Amp rating VERIS ................92 DENT Instruments PowerScout 24...
  • Page 111 ................60 objects................90 negative power/energy measurement ......72 registers ............... 72 net measurement ............76 NEMA ................37 output port ..............40 net measurement positive power/energy measurement ......67 registers ............... 76 pulse output/input ............62 DENT Instruments PowerScout 24...
  • Page 112 ...............45 installing ............... 16 specifications ..............14 static connection ............24 system values ..............47 wild leg .................49 wiring connections ............38 wiring CTs ..............41 wiring diagrams ............48 technical specifications ..........14 write single register............80 Three-wire Delta ............48 DENT Instruments PowerScout 24...

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