6-8
•
When a shock is generated at startup, increase the setting for the starting-torque compensation time
constant (C4-05). Use either the DC injection braking at startup (b2-03) or the “DC braking reference”
multi-function input (set value: 60) to raise the motor’s magnetic flux in advance before startup. (The
magnetic flux from the DC injection braking at startup (b2-03) can also be brought up quickly. Refer to
Setting DC Injection Braking (b2)
on page 6-42 for details.)
6-1-7 Selecting Auto-tuning Carrier Frequency
The auto-tuning carrier frequency is by default set to a value higher than that used for conventional
models to improve the accuracy of auto-tuning. The default setting does not normally need to be
changed.
Parameter
Display
Setting
Units
Default
Valid access levels
number
p y
name
g
range
setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
C8-30
Carrier in
tune
0 to 2
---
2
---
Advanced
Settings
Setting
Description
0
The auto-tuning carrier frequency is set to 2 kHz.
1
The auto-tuning carrier frequency is set according to the set value of parameter C6-01.
2
The auto-tuning carrier frequency is set to 5 kHz.
Note The default setting does not normally need to be changed. Adjust the parameter with the parame-
ter C6-01 set to 0 or 1 if auto tuning cannot be executed.
6-1-8 Setting/Adjusting Motor Parameters
H
Adjusting the V/f Pattern
Normally it isn’t necessary to adjust the V/f pattern with open-loop vector control. Adjust the V/f pattern
when you want to change the maximum frequency setting or decrease the Inverter’s output voltage or
when stalls are occurring during no-load operation. It is possible to make user-defined V/f pattern set-
tings (E1-04 through E1-10) in open-loop vector control mode. (The preset V/f patterns cannot be se-
lected.)
Parameter
Display name
Setting
Units
Default
Valid access levels
*1
number
p y
g
range
setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
E1-04
Max Frequency
40.0 to 400.0
Hz
60.0
Q
Q
Q
Q
E1-05
Max Voltage
0.0 to 255.0
*2
VAC
200.0
*2
Q
Q
Q
Q
E1-06
Base Frequency
0.0 to 400.0
Hz
60.0
Q
Q
Q
Q
E1-07
Mid Frequency A
0.0 to 400.0
Hz
3.0
*2
Q
Q
A
---
E1-08
Mid Voltage A
0.0 to 255.0
*2
VAC
11.0
*2,3
Q
Q
A
---
E1-09
Min Frequency
0.0 to 400.0
Hz
0.5
Q
Q
Q
A
E1-10
Min Voltage
0.0 to 255.0
*2
VAC
2.0
*2,3
Q
Q
A
---
Note 1. Q:
Quick Start, Basic, or Advanced
A:
Advanced only
---:
Not applicable.
Advanced Operation
Chapter 6
Summary of Contents for SYSDRIVE 3G3FV
Page 1: ...USER S MANUAL High function General purpose Inverter SYSDRIVE 3G3FV Cat No I516 E1 4 ...
Page 16: ...Chapter 1 Introduction 1 1 Function 1 2 Nomenclature 1 3 New Functions 1 ...
Page 33: ...Chapter 2 Installation 2 1 Mounting 2 2 Wiring 2 ...
Page 112: ...Chapter 4 Trial Operation 4 1 Procedure 4 2 Operation Example 4 ...
Page 289: ...Chapter 7 Parameter Lists 7 1 Initialize Mode Parameters 7 2 Program Mode Parameter List 7 ...
Page 366: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9 ...
Page 395: ...Chapter 10 Appendix 10 1 Notes on Using the Inverter for a Motor 10 ...