
Contents
II SD780 Series Servo Technical Manual
3.10 Connection with the Upper Device..................................................................................43
3.10.1 Analog Input Circuit 3..........................................................................................43
3.10.2 Position Instruction Input Circuit..........................................................................43
3.10.3 Sequence Control Input Circuit ...........................................................................47
3.10.4 Sequence Output Loop .......................................................................................47
3.11 Position Control Wiring Diagram .....................................................................................49
3.12 Speed Control Wiring Diagram .......................................................................................50
3.13 Torque Control Wiring Diagram.......................................................................................51
3.14 Regenerative Resistor Connection .................................................................................52
3.14.1 Connection of Regenerative Resistors ...............................................................52
3.14.2 Selection of Regenerative Resistor.....................................................................52
3.15 Noise and High Harmonic Countermeasures .................................................................53
4 Trial operation .............................................................................................................................54
4.1 Inspections and Notes before Trail Operation ..................................................................54
4.1.1 Conditions of the Servo Motor...............................................................................54
4.1.2 Conditions of the Servo Drive ...............................................................................54
4.1.3 Installation .............................................................................................................54
4.2 JOG trail operation............................................................................................................ 54
5 Operation.....................................................................................................................................55
5.1 Basic Functions.................................................................................................................55
5.1.1 Quick Guide...........................................................................................................55
5.1.2 Servo Enable and Over-Travel Setting .................................................................55
5.1.3 Motor Rotation Direction .......................................................................................57
5.1.4 Stop Mode............................................................................................................. 57
5.1.5 Electromagnetic Brake..........................................................................................58
5.1.6 Regenerative Resistor...........................................................................................60
5.1.7 Overload................................................................................................................61
5.1.8 Multi-turn Absolute Encoder.................................................................................. 62
5.1.9 Torque Limit ............................................................................................63
5.2 Position Mode ...................................................................................................................65
5.2.1 Quick Guide...........................................................................................................66
5.2.2 Basic Settings .......................................................................................................66
5.2.3 Deviation Clearance..............................................................................................68
5.2.4 Command Pulse Prohibition..................................................................................70
5.2.5 Positioning Approach ............................................................................................70
5.2.6 Positioning Completion .........................................................................................71
5.2.7 Command Pulse Input Magnification Switching....................................................72
5.2.8 Smooth Settings....................................................................................................73
5.2.9 Frequency-division Output ....................................................................................74
5.3 Speed Mode......................................................................................................................77
5.3.1 Quick Guide...........................................................................................................77
5.3.2 Basic Settings .......................................................................................................77
5.3.3 Soft Start ...............................................................................................................80
5.3.4 Zero Fixed Functions ............................................................................................81
5.3.5 Rotation Detection Signal......................................................................................82
5.3.6 Consistent Speed..................................................................................................83
5.4 Torque Mode .....................................................................................................................84
5.4.1Quick Guide............................................................................................................85
5.4.2 Basic Setting ......................................................................................................... 85