ABB ACS800 User Manual

ABB ACS800 User Manual

Pumpsave 4.1, energy savings calculator for pump drives
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PumpSave 4.1
User's Manual
Energy Savings Calculator
for Pump Drives
3AFE 64191691 REV F EN
Effective: 01.08.2008
Copyright © ABB Oy, Drives 2008


Table of Contents

Summary of Contents for ABB ACS800

  • Page 1 PumpSave 4.1 User’s Manual Energy Savings Calculator for Pump Drives ACS800 ACS550 ACH550 ACS350 ACS150 ACS55 3AFE 64191691 REV F EN Effective: 01.08.2008 Copyright © ABB Oy, Drives 2008...
  • Page 2 DrivePump1.2 PC SW from ABB Drives is recommended. Version 4.1 The tables of ABB Drives have been updated and user manual corrected to the level of current PumpSave. PumpSave 4.0 did not have a valid user manual. Most data fields are populated with default values to help users.
  • Page 3 2 — Starting and Running the Program Software Required Microsoft® Excel 97 or later is required to run the energy calculation workbook. The user should have some familiarity with Microsoft Excel. Files Provided The PumpSave files for pump drive calculations are incorporated into Excel workbook named originally PumpSave4.1.xls.
  • Page 4 Worksheet After having clicked Continue button and accepting the license terms, the worksheet will open, see Figure 2, where input data is entered and results are presented. There are four buttons in the center of the sheet, Auto-Adjust screen size screen button, Send to default printer...
  • Page 5: General Data

    3 — PumpSave worksheet inputs and results General All white cells on the calculation sheet are for entering information and data. Please use for decimal symbol either comma or decimal point etc according you Excel settings. The sheet is filled in by default values to help users to right away find the idea of worksheet.
  • Page 6: Input Data

    Input data The required data includes EQUIPMENT DATA, system data, pump data, existing flow control method, motor and supply voltage data and operating profile. Economic data such as energy price and investment cost is required in order to get figures for investment appraisal. System data Liquid density, ...
  • Page 7: Motor Data

    Existing control method Existing Control Method Pick the existing control method that you want to compare with ABB AC Drive control. The control method is selected from the drop-down list on the upper left part of the sheet. The options are throttling, on/off control, and hydraulic control.
  • Page 8 Operating profile Annual running time In other words, this is the total operating time per year (h). Enter the estimated number of hours that the pump is expected to run during a year’s time. For 24 hour, 365-day operation, enter 8760 hours. Operating Time at Different Flow Rates (%) Enter the estimated time as a percentage of the total operating time for operation at each of the listed flow rates from 100% to 20% of nominal volume...
  • Page 9 Energy & environmental Energy Consumed – graph (kWh) The calculated energy used annually with the existing control method and using a frequency converter for flow control are both illustrated in two-column chart. Saving percentage % The reduction in electricity costs in percents. This is also, of course, the energy saving in percents.
  • Page 10 4 — PumpSave calculations with US Units Input Data with US Units The initial data presented in the following consists of the same elements as above but is entered using US measurement units. The following applies when “US Units” is selected. In the following the changes to non-SI are only explained.
  • Page 11: Drive Data

    System data Liquid density, (lb/ft³) Enter the density of the liquid at the pump inlet in pounds per cubic feet. The density of water is 62.4 lb/ft³ (default value). Static head (ft) Motor Data Nominal Power, (Hp) Drive Data Nominal Efficiency,  Based on motor power and voltage, PumpSave suggests appropriate drive type to be used.
  • Page 12 5 — Explanation of Calculations In this chapter, the formulas behind PumpSave calculations are presented. The formulas use metric units. If the user enters the data in US units, PumpSave converts it to metric units first. The conversion factors are given in the end of this manual.
  • Page 13       In the calculation sheets, calculations are at single points for Q = 20% to 100% of nominal pump flow Qn. Q is the actual flow. H is the total dynamic head at flow Q. The efficiency figures are multiplied with k-factors witch take into account operating conditions with some accuracy.
  • Page 14: Unit Conversions

    Hydraulic control,      Phyi , where                     The rated efficiency of hydraulic coupling is assumed to be 98%. The required power for the compared control method is calculated and the energy consumption per year is thereafter calculated from the formula ...

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