Instruction manual

49
Easy gain tuning
CONTROL
4
4.5.5 Easy gain tuning-related parameter operation
Refer to the following table for the parameter/gain read/write operation using Pr. 819 "easy gain tuning selection".
Pr. 819 = 0
Without
tuning
Pr. 819 = 1
With inertia estimation,
with gain calculation
Pr. 819 = 2
Inertia as set in Pr. 880,
with gain calculation
Pr. 880 "load inertia"
Read
Setting is
displayed.
Inertia estimation result is
displayed from the RAM.
Setting is displayed.
Write
Setting can
be changed.
Load inertia estimation result is
written. (Write is enabled only
during a stop.)
Setting can be changed.
Timing of writing load
inertia ratio and control
gains into E
2
PROM
— Not written
•Every hour after power-on
•When the Pr. 819 setting is
changed to other than "1".
•When the vector control mode is
changed to other drive systems
due to the Pr. 800 "control method
selection" setting change.
•When the Pr. 819 setting is changed
to "2"
•When Pr. 880 "load inertia ratio" or
Pr. 818 "easy gain tuning response
level setting" is changed
Control gains
(Pr. 820, Pr. 821,
Pr. 828, Pr. 422)
Read
Settings are
displayed.
Gain calculation results (RAM) are
displayed.
Settings are displayed.
Write
Settings can
be changed.
Write disabled (operation error) Write disabled (operation error)
CAUTION
RAM data is erased when the power is not supplied or the inverter is reset.