Mandatory Setting For Operation; Overview Of Mandatory Setting Items - Hitachi WJ Series User Manual

Chapter 8

8.1 Mandatory Setting for Operation

8.1.1

Overview of Mandatory Setting Items

 What are the essential parameters to operate the motor and inverter?
Q
 This chapter describes the parameter settings and procedures required to drive the motor and
A
inverter correctly.
 It also describes the electronic thermal function for protecting the motor.
 Follow the sections in the table below to set the parameters appropriately before starting test
!
run and adjustment.
"8.1.2 Changing the Load Rating of the
Inverter"
"8.1.3 Setting the Motor Specification
Label Data to Parameters"
"8.1.4 Setting Electronic Thermal for the
Motor"
"8.1.5 Setting Motor Constant"
"8.2 Test Run"
"8.3 Carrying Out Motor Auto-tuning"
Mandatory Setting for Motor Drive and Test Run
Item
8-1-1
Description
Set the load rating according to the application.
Select from normal duty mode suitable for elevators,
conveyors, etc. and low duty mode suitable for fans, pumps,
etc.
Set the driven motor specification to the inverter.
Set the base frequency, maximum frequency, motor capacity,
number of motor poles, motor rated voltage, motor rated
current, etc. before starting operation.
The electronic thermal function is used to protect the motor
from burnout. Be sure to set it according to the motor to be
used.
When automatic torque boost/sensorless vector control is
used, the motor constant must be set.
If the motor constant is unknown, obtain it from the motor
manufacturer or measure the motor constant by referring to
"8.3 Carrying Out Motor Auto-tuning".
In order to confirm that the inverter and motor operate
properly, conduct test runs with the motor alone and with the
actual load.
When using automatic torque boost or sensorless vector
control, set the motor constant referring to "8.1.5 Setting
Motor Constant" or "8.3 Carrying Out Motor Auto-tuning".
This section explains how to perform auto-tuning. When
using a motor other than Hitachi's standard or an unknown
motor, measure the motor constant using the auto-tuning
function.