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1-5
•
Custom V/f pattern can be set.
H
Frequency References
•
The following five types of frequency references can be used to control the output frequency of the
Inverter.
S
Numeric input from the Digital Operator
S
Voltage input within a range from 0 to 10 V
S
Voltage input within a range from 0 to
±
10 V (With minus voltage, rotation is in the opposite direc-
tion of the run command.)
S
Current input within a range from 4 to 20 mA
S
Input by Optional Card
The Inverter can be set to use any of the above types by designating it with parameters.
•
A maximum of eight frequency references can be registered in the Inverter. Including inching, this
enables multi-step speed operation with up to nine speed steps via remote multi-step reference
inputs.
H
PID Control
•
The Inverter has a PID control function, enabling easy follow-up control.
•
Follow-up control is a control method in which the Inverter varies the output frequency to match the
feedback value from the sensor with the set target value.
•
Follow-up control can be applied to a variety of control operations, depending on the contents
detected by the sensor.
•
PID control is available for the following applications.
S
Speed control:
With a speed sensor, such as a tacho-generator, the Inverter regulates the
rotation speed of the motor regardless of the load of the motor or synchro-
nizes the rotation speed of the motor with that of another motor.
S
Pressure control:
With a pressure sensor, the Inverter performs constant pressure control.
S
Flow-rate control:
By sensing the flow rate of a fluid, the Inverter performs precise flow-rate
control.
S
Temperature control: With a temperature sensor, the Inverter performs temperature control by
fan speed.
H
Zero-servo Control
•
This function is valid with vector control (with PG).
•
Even at a motor speed of zero (0 Hz), a torque of 150% of the motor’s rated torque can be generated
and the average servomotor holding power (stopping power) can be obtained.
H
Speed Control By Feedback
•
This function is valid with PG.
•
An optional PG Speed Control Card be used to enable feedback control for speeds, thereby improving
speed control accuracy.
Introduction
Chapter 1
Содержание SYSDRIVE 3G3FV
Страница 1: ...USER S MANUAL High function General purpose Inverter SYSDRIVE 3G3FV Cat No I516 E1 4 ...
Страница 16: ...Chapter 1 Introduction 1 1 Function 1 2 Nomenclature 1 3 New Functions 1 ...
Страница 33: ...Chapter 2 Installation 2 1 Mounting 2 2 Wiring 2 ...
Страница 112: ...Chapter 4 Trial Operation 4 1 Procedure 4 2 Operation Example 4 ...
Страница 289: ...Chapter 7 Parameter Lists 7 1 Initialize Mode Parameters 7 2 Program Mode Parameter List 7 ...
Страница 366: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9 ...
Страница 395: ...Chapter 10 Appendix 10 1 Notes on Using the Inverter for a Motor 10 ...