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DENT Instruments PowerScout 3 User Manual

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USER'S MANUAL
™
PowerScout 3
™
PowerScout 18
™
ViewPoint
October 25, 2010
© 2008, 2010 DENT Instruments, Inc.
DENT Instruments | 64 NW Franklin Avenue | Bend, Oregon 97701-2906 USA
Phone 541.388.4774 | Fax 541.385.9333 | www.DENTinstruments.com
PowerMeterStore
1.877.766.5412
www.
.ca
Shop for Power Metering products online at:

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Summary of Contents for DENT Instruments PowerScout 3

  • Page 1 PowerScout 18 ™ ViewPoint October 25, 2010 © 2008, 2010 DENT Instruments, Inc. DENT Instruments | 64 NW Franklin Avenue | Bend, Oregon 97701-2906 USA Phone 541.388.4774 | Fax 541.385.9333 | www.DENTinstruments.com PowerMeterStore 1.877.766.5412 www. Shop for Power Metering products online at:...

  • Page 2: Safety Summary And Specifications

    ™ No accessories are approved for use with the PowerScout 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 please call 541.388.4774, or email tech support (techhelp@dentinstruments.com), for assistance.

  • Page 3: Symboles Des Equipements

    L'équipement protégé en double isolation (IEC 536 Classe II) 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. Si le compteur semble endommagé ou défectueux, tout d'abord déconnecter le pouvoir de l'appareil. Alors s'il vous plaît appelez 541.388.4774 ou contacter par courriel l'assistance technique (techhelp@dentinstruments.com), pour obtenir de...

  • Page 4: Section I: Introduction

    SECTION I: INTRODUCTION Using this Manual ™ ™ This manual contains information about the PowerScout 3, PowerScout 18, ViewPoint Software and the RS- 422/485 to Serial Adapter. For ease of use, this manual has been divided into five sections. The list of sections and their contents follows: Section I Introduction...
  • Page 5 SECTION II: THE POWERSCOUT™ PowerScout Technical Specifications Service Type Three Phase, Four Wire (WYE) 3 Voltage Channels CATIII 80-346 Volts AC Line-to-Neutral, 600V Line-to-Line Current Channels 3 channels 0-5,000+ Amps depending on current transformer PS18 18 channels 0-5,000+ Amps depending on current transformer Measurement Type True RMS using high-speed digital signal processing (DSP) Line Frequency...
  • Page 6  Connections To The PowerScout ™ The PowerScout has a connector for four voltage wire leads for making connections to voltage sources (L1, L2, ™ ™ L3, Neutral). The PowerScout 18 also has connectors for up to 18 current transducers (CTs) (PowerScout ™...
  • Page 7 ™ PowerScout Layout and Watt-Transducer Naming Convention PowerMeterStore 1.877.766.5412 www. Shop for Power Metering products online at:...
  • Page 8 WARNING! REMOVE THE METER FROM ALL SOURCES OF VOLTAGE BEFORE MOUNTING! Mounting the PowerScout 3 ™ The PowerScout 3 must be installed in an approved electrical panel or enclosure using proper installation practices according to the local electrical codes. For convenience of mounting, two mounting tabs are ™...
  • Page 9 Wiring of the CT’s: For each of the six 3-phase metering elements A through F, connect the current transformers as shown in the diagram below. Note: The CTs are insensitive to orientation and may be placed on the wires to be monitored with the CT faces ™...
  • Page 10 ™ Powering the PowerScout 3 and 18 ™ The PowerScout instruments are self-powered from the L1 and L2 lines. When 80 – 340VAC or DC are put across the L1 and L2 wires the three phasing LEDs will begin to flash in sequence. If the LEDs are all green then the system power factor is greater than 0.55 and the CTs are properly placed on the corresponding voltage phases.
  • Page 11 PowerScout Modbus Commands The Modbus commands that are used by the PowerScout meter are the Read Holding Register command, the Write (Preset) Single Register command and the Return Slave ID command. The Read Holding Register command is the most often used, as this is the command that retrieves the actual voltage, power and energy values from the meter.
  • Page 12 PowerScout Modbus Register Assignments Table 1 is a listing of all of the data registers available on the PowerScout™. Note that following the Modbus protocol, the actual register address requested is offset from the base Modbus register by 40001. Table 1. Modbus Register Assignments. Offset refers to a base of 40001 Register Offset Modbus Detailed Description...
  • Page 13 Register (Con’t) Offset Modbus Detailed Description kVAh L1 LSW 4040 44041 Individual Phase Apparent Energy LSW (kVAh) kVAh L1 MSW 4041 44042 Individual Phase Apparent Energy MSW (kVAh) kVAh L2 LSW 4042 44043 kVAh L2 MSW 4043 44044 kVAh L3 LSW 4044 44045 kVAh L3 MSW...
  • Page 14 Interpreting the PowerScout Registers – Data Scaling The use of Modbus protocols limits the data registers to a maximum of 2 bytes (16 bits) or a maximum decimal value of 65535. Modbus also requires that the values be integer values. To overcome these limitations some measured (and stored) values have to be scaled to fit into the Modbus registers.
  • Page 15 Resetting Modbus Registers ™ Most of the PowerScout registers are real-time values such as instantaneous watts or power factor. However, some registers are accumulated values such as kWh, kVARh, kVAh and various Peak Demand (kW) values. To reset the accumulating registers use the standard Modbus protocol to write a “0” to register 40001. Modbus Implementation &...
  • Page 16 ™ SECTION III: ViewPoint Software ™ ™ The ViewPoint program is designed to let you easily configure the PowerScout for the current transformers connected to it and to check readings. Installing the Software An RS-485 to USB adapter or RS-422/485 to Serial adapter is required to connect the computer to the ™...
  • Page 17 Step 3 ™ ™ Once you're communicating with the PowerScout , you can use the other tabs in the ViewPoint program to ™ configure the PowerScout . See the next section for a description of each tab. Using the ViewPoint Program The program has four tabs to bring up screens for a particular task.
  • Page 18 SECTION IV: RS-422/485 Adapter Instructions for Installing the USB to RS-485 Adapter 1. Insert the B&B Electronics CD that came with the USB to RS-422/485 adapter into your PC. 2. Plug the USB to RS-422/485 adapter into a PC USB port. 3.
  • Page 19 8. Ignore the Windows message about logo compatibility and click Continue anyway, and then Finish when the installation is complete. 9. The New Hardware Wizard will come up a second time in order to install the serial port. Repeat steps 4-8.

  • Page 20: Section V: Appendix

    SECTION V: APPENDIX APPENDIX A: HEXIDECIMAL to DECIMAL CONVERSION Table A1: Decimal Value is the Modbus Meter Address. Hex Value Corresponds to the Two Rotary Switch Settings. (Left switch is high digit, Right switch is low digit) Decimal Decimal Decimal Decimal Decimal Decimal...

  • Page 21: Appendix B: Veris H8035/H8036 Emulation

    System Maximum Inst. Demand Multiplier Required, 500mS ™ *All values are 16 bit, unsigned integers. The PowerScout does not currently support the Veris floating point registers. Consult DENT Instruments for availability. PowerMeterStore 1.877.766.5412 www. Shop for Power Metering products online at:...
  • Page 22 Table B2. Veris Multipliers for Integer Registers 40001 - 40027 1601 - Address Units ≤100A 101 - 400A 401 – 800A 801 - 1600A 32,000A 40001 KWH LSB 7.8125exp-3 0.03125 0.0625 .125 0.25 40002 KWH MSB 2048 4096 8192 16384 40003 0.004 0.016...

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