
B-65262EN/03 TABLE OF CONTENTS
c-1
TABLE OF CONTENTS
SAFETY PRECAUTIONS.......................................................................... s-1
PREFACE.................................................................................................. p-1
I. SPECIFICATIONS FOR THE αis/αi SERIES
1 GENERAL ..............................................................................................3
1.1 FEATURE ......................................................................................................4
1.2 LINEUP OF THE SERIES..............................................................................5
2 HOW TO USE SERVO MOTORS ..........................................................6
2.1 USE ENVIRONMENT FOR SERVO MOTORS .............................................7
2.1.1 Ambient Environment ............................................................................................. 7
2.1.2 Checking a Delivered Servo Motor and Storing a Servo Motor ........................... 11
2.1.3 Separating and Disposing of a Servo Motor.......................................................... 12
2.2 CONNECTING A SERVO MOTOR..............................................................13
2.2.1 Applicable Amplifiers ........................................................................................... 13
2.2.2 Connections Related to a Servo Motor.................................................................. 14
2.2.3 Connector............................................................................................................... 16
2.3 COUPLING A SERVO MOTOR...................................................................29
2.3.1 Coupling a Servo Motor and Machine .................................................................. 29
2.3.2 Allowable Axis Load for a Servo Motor............................................................... 33
2.3.3 Axis Run-out Precision of a Servo Motor ............................................................. 34
2.3.4 Machine Movement per 1 Revolution of Motor Shaft .......................................... 35
2.3.5 Precautions for Using Linear Scale ....................................................................... 36
2.3.6 Cautions in Mounting a Servo Motor.................................................................... 38
3 SELECTING A MOTOR .......................................................................41
3.1 CONDITIONS FOR SELECTING A SERVO MOTOR .................................42
3.2 SELECTING A MOTOR...............................................................................45
3.2.1 Calculating the Load Torque................................................................................. 46
3.2.2 Calculating the Motor Speed................................................................................. 48
3.2.3 Calculating the load inertia.................................................................................... 49
3.2.4 Calculating the Acceleration Torque..................................................................... 53
3.2.5 Calculating the Root-mean-square Value of the Torques ..................................... 58
3.2.6 Calculating the Percentage Duty Cycle and ON Time with the Maximum
Cutting Torque....................................................................................................... 60
3.2.7 Calculating the Dynamic Brake Stop Distance ..................................................... 62