viiManual ContentsThis manual provides Σ-Series users with information on the following:• An overview of servo systems for first-time users.• Checking the product on delivery and basic applications of the servo.• Servo applications.• Selecting an appropriate servo for your needs and placing an order.• Inspection and maintenance.Manual StructureAll chapters in this manual are classified into one or more of three areas according to their contents: A, B, andC. Refer to the applicable chapters for the information you require.A: Chapters explaining how to select a servo: For users who wish to gain a basic understanding ofΣ Series products or who need to select an appropriate servo.B: Chapters explaining how to design a servo system: For users who are about to design, install, andoperate a Σ-Series Servo Control System.C: Chapters explaining maintenance: For users who are going to maintain and troubleshoot Σ-Seriesproducts.Chapter Title Page AreaCHAPTER 1 For First-time Users of AC Servos 1 A, B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Provides an overview of servos and the Σ Series.CHAPTER 2 Basic Uses of Σ-series Products 15 B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Describes steps to take when product is received, plus basicwiring and application methods.CHAPTER 3 Applications of Σ-series Products 51 B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Describes the effective usage of Σ-Series features according toapplication.CHAPTER 4 Using the Digital Operator 167 B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Describes operating procedures for Σ-Series servos, turningfeatures ON and OFF, setting control constants, etc.CHAPTER 5 Servo Selection and Data Sheets 205 A, B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Describes selection methods for Σ-Series servos and peripher-als and provides servo specifications.CHAPTER 6 Inspection, Maintenance, and Troubleshooting 343 C. . . . . . . . . . . . . . . . . . .Describes user maintenance and troubleshooting.APPENDIXESA Differences between SGDA and SGD Servopacks 367 A, B. C. . . . . . . . . . . . . . . . . . .B Servo Adjustment 374 B, C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C List of I/O Signals 365 A, B, C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D List of User Constants 397 B, C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E List of Alarm Displays 409 B, C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INDEX 415 A, B, C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .