YASKAWA VARISPEED-616G5 Instruction Manual page 204

Advanced Operation
7.5.1 Application Constants: b
7
Integral (I) Limit: b5-04
D
User User
Constant Name
Number
b5-04
Integral (I) limit
This constant prevents the calculated value of the integral control in the PID control from exceed-
•
ing the fixed amount.
There is normally no need to change the setting.
•
Reduce the setting if there is a risk of load damage, or of the motor going out of step, by the Invert-
•
er's response when the load suddenly changes. If the setting is reduced too much, the target value
and the feedback value will not match.
Set this constant as a percentage of the maximum output frequency, with the maximum frequency
•
taken as 100%.
PID Limit: b5-06
D
User User
Name
Constant
Number
b5-06 PID limit
Constant b5-06 prevents the frequency reference after PID control from exceeding the fixed
•
amount.
Set this constant as a percentage of the maximum output frequency, with the maximum frequency
•
taken as 100%.
PID Offset Adjustment: b5-07
D
User User
Constant Name
Number
PID offset adjust-
b5-07
ment
Constant b5-07 adjusts the PID control offset.
•
If both the target value and the feedback value are set to zero, adjust the Inverter's output frequency
•
to zero.
PID Primary Delay Time Constant: b5-08
D
User User
Constant Name
Number
PID primary delay
b5-08
time constant
Constant b5-08 is the low-pass filter setting for PID control outputs.
•
There is normally no need to change the setting.
•
If the viscous friction of the mechanical system is high, or if the rigidity is low, causing the mechan-
•
ical system to oscillate, increase the setting so that it is higher than the oscillation frequency period.
This will decrease the responsiveness, but it will prevent the oscillation.
PID Output Characteristics: b5-09 (for SPEC: F)
J
User User
Constant Name
Number
PID output charac-
b5-09
teristics
Settings
D
Setting
0
PID output has forward characteristics
1 PID output has reverse characteristics
Change g
during during Setting Setting Unit Factory
Opera- Range
tion
0.0 to 100.0 %
f
Change g
Setting Setting Unit Factory
during during
Opera- Range
tion
0.0 to 100.0 %
f
Change g
during during Setting Setting Unit Factory
Opera- Range
tion
−100.0 to
%
f
100.0
Change g
during during Setting Setting Unit Factory
Opera- Range
tion
0.00 to
s
f
10.00
Change g
during during Setting Setting Unit Factory
Opera- Range
tion
0, 1 −
×
Function
7 - 50
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
A A A
100.0
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
100.0 A A A
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
0.0 A A A
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
0.00 A A A
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
A A A
0
Flux
Vector
A
Flux
Vector
A
Flux
Vector
A
Flux
Vector
A
Flux
Vector
A