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Reducing Long-cycle Vibration
If vibration occurs with a longer cycle than the integral time (I) set value, it means that integral operation
is strong. The vibration will be reduced as the integral time (I) is lengthened.
Response
Before adjustment
After adjustment
Time
Reducing Short-cycle Vibration
If the vibration cycle is short and vibration occurs with a cycle approximately the same as the derivative
time (D) set value, it means that the derivative operation is strong. The vibration will be reduced as the
derivative time (D) is shortened.
If vibration cannot be reduced even by setting the derivative time (D) to “0.00” (no derivative control),
then either lower the proportional gain (P) or raise the PID’s primary delay time constant.
Response
Before adjustment
After adjustment
Time
H
Setting the Reference Hold Function (b6)
The reference hold or dwell function is used to temporarily hold the output frequency when starting or
stopping a motor with a heavy load. This helps to prevent stalling.
Parameter
Display name
Setting
Units
Default
Valid access levels
number
p y
g
range
setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
b6-01
Dwell Ref @Start
0.0 to
400.0
Hz
0.0
Advanced
b6-02
Dwell
Time@Start
0.0 to
10.0
Sec
0.0
Advanced
b6-03
Dwell Ref @Stop
0.0 to
400.0
Hz
0.0
Advanced
b6-04
Dwell Time
@Stop
0.0 to
10.0
Sec
0.0
Advanced
These parameters cannot be changed during operation.
Advanced Operation
Chapter 6
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 ...