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Hitachi Vector Control with the SJ300 Inverter User Manual

Hitachi Vector Control with the SJ300 Inverter
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Hitachi Vector Control with the SJ300 Inverter Specifications

General IconGeneral
BrandHitachi
ModelVector Control with the SJ300 Inverter
CategoryInverter
LanguageEnglish

Summary

1 Overview

SLV control (No SJ-FB is used)

Description of SLV control mode for high motor torque performance with open loop.

0-SLV control (No SJ-FB is used)

Description of 0-SLV control for high torque performance at around 0Hz.

V2 control (SJ-FB is used)

Description of V2 control mode using SJ-FB for high torque and accurate motor performance.

Difference between each control

Control performance

Compares speed linearity, fluctuation, control range, speed response, and torque response.

Torque performance at low speed

Details guaranteed minimum torque performance at low speed for different motor types.

Torque performance at 0Hz

Details guaranteed torque performance at 0Hz, with or without standstill.

2 How to tune each parameter

Tuning target of each parameter

Explains criteria for motor performance and key influencing parameters for tuning.

Example of tuning effects (SLV mode)

Shows actual effects of parameter changes on motor current waveforms with examples.

3 Positioning under ASR mode (Orientation Function) (V2 mode)

Orientation Function

Explains the orientation function for accurate motor stopping based on encoder pulses.

Example of positioning under speed control mode (ASR) on SJ300 with SJ-FB

Demonstrates wiring and parameter settings for positioning using ASR mode with SJ-FB.

Timing chart

Illustrates the timing sequence for positioning operations with ORT input and encoder pulses.

4 APR Control

Explanation of the performance

Describes stable state performance and feedback behavior in APR control mode.

Example of the parameter settings

Lists main parameters required for setting up APR control mode.

How to adjust control parameters for APR control

Explains adjustment of feed forward gain and position loop gain for APR control.

5 Master Slave Control

Example of parameter settings for Master-Slave control

Provides parameter settings for achieving a 5:1 speed ratio between master and slave units.

How many slaves can be connected?

Details methods for connecting multiple slave SJ300 units to a single master unit.

Explanation of each P parameter

Explains specific P parameters related to encoder, control mode, and pulse train input.

Appendix A Calculation of total inertia (reflected to the motor shaft)

Ventilation Fan

Provides formulas for calculating total inertia for a ventilation fan system.

Truck

Provides formulas for calculating total inertia for a truck system.

Conveyor

Provides formulas for calculating total inertia for a conveyor system.

Appendix B Calculation of load inertia

A column

Formula for calculating load inertia of a column shape.

A cylinder

Formula for calculating load inertia of a cylinder shape.

A rectangular solid

Formula for calculating load inertia of a rectangular solid.

A Cone

Formula for calculating load inertia of a cone shape.

Wind up (vertical linear motion)

Formula for calculating load inertia for vertical linear motion.

Horizontal linear motion

Formula for calculating load inertia for horizontal linear motion.

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