Lab 3 - PwrFlex 70 Intro - Fall 09

Lab 3 - PwrFlex 70 Intro - Fall 09 - MFET 474 Laboratory...

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MFET 474, Lab #3 page 1 of 13 MFET 474 Laboratory Assignment #3 Fall ‘09 Introduction to the PowerFlex 70 Objectives: In this assignment you will learn how to: Wire PowerFlex 70 discrete I/O Configure a 20-COMM-E module Configure a PowerFlex 70 drive using DriveExplorer Preparation: Your Instructor will discuss the basic lab setup. Refer to the following manuals as necessary: PowerFlex 70 Quick Start Manual PowerFlex 70 User Manual 20-COMM-E User Manual These manuals have been posted on the MFET 474 web site. Background: It is assumed you have worked with the ControlLogix analog input module. The PowerFlex 70 AC variable speed drives are powered using 208 VAC. In this lab assignment it is very important that you follow the directions carefully and do not expose yourself to electrical shock. Whenever you are working with the PowerFlex 70 the following rule must be observed: When the PowerFlex 70’s cover is removed, the disconnect must be switched OFF AND locked in the OFF position. Your Instructor will show you where the main disconnect is located. Phase 1: This phase will introduce you to the system and how it is wired. Step 1 – A few basic observations. 1.1) Make sure the main disconnect is switched OFF and locked in the OFF position.
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MFET 474, Lab #3 page 2 of 13 1.2) Remove the drive’s cover (remove single screw located on the front of the drive). 1.3) Note how the drive is plugged into the 208 VAC receptacle which is located under the table top at each workstation. 1.4) The following diagram illustrates how three phase power is connected to the drive and how the drive is wired to the AC induction motor: 1.4a. Inside the PowerFlex 70’s enclosure, examine the bottom connector. Observe the incoming power lines L1, L2, and L3. Using a voltage detector, verify that the power has indeed been turned OFF! Ask your Instructor to demonstrate this procedure. 1.4b. Inside the PowerFlex 70’s enclosure, examine the bottom connector. Observe the motor wires U, V, and W. 1.5) Notice the 20-COMM-E Ethernet-to-DPI (Digital Peripheral Interface) converter mounted inside the drive. The 20-COMM-E enables the drive to become a node on Ethernet. Trace the Ethernet cable. Is the 20-COMM-E connected to the Ethernet switch located on the wall? Answer (Yes or No): ___________ 1.6) Locate the DPI connector located on the bottom of the drive’s cover. How many pins does the DPI connector have? Answer: ____________________
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MFET 474, Lab #3 page 3 of 13 Step 2 – Document the drive’s catalog number. 2.1) In the space provided below, document the drives catalog number (printed on the side of the drive): Cat No. ____________________________________________________________ 2.2) Based on page P-5 of the User Manual, what is the voltage rating of the drive? Answer: ______________________
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This note was uploaded on 02/29/2012 for the course MFET 474 taught by Professor Kostek,t during the Fall '08 term at Purdue University-West Lafayette.

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Lab 3 - PwrFlex 70 Intro - Fall 09 - MFET 474 Laboratory...

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