Limit Of Load Inertia Estimation - Delta ASDA-M Series User Manual

ASDA-M

5.6.5 Limit of Load Inertia Estimation

Acceleration / Deceleration time of reaching 2000r/min should be less than 1 second.
The speed in forward and reverse direction should be higher than 200r/min.
The load inertia should be under 100 times of motor inertia.
The change of external force of inertia ratio cannot be too severe.
In auto mode, the inertia value will be saved to P1-37 every 30 minutes; while in semi-auto
mode, the inertia value will be saved to P1-37 only until the system inertia is stable and
stops the estimation of load inertia.
1. Decrease the value of P2-31 to
r e d u c e t h e n o i s e . S e t P 2 - 2 5
according to the new value of P2-
31.
2 . I f u s e r s d o n o t w a n t t o
decrease the value of P2-31, P2-
23 and P2-24 can be used to
suppress the resonance as well.
(Please refer to Chapter 5.6.6.)
Revision December, 2014
Servo Off. Set P2-32 to 2 and then Servo On.
Set P0-02 to 15. The panel
displays inertia ratio.
The servo drive issues the command of
alternately accelerate /decelerate.
YES Any resonance?
NO
The inertia ratio
shown on the panel is
stable.
YES
Satisfactory
performance?
YES
If the value of inertia ratio remains
almost the same, then Servo Off and
set P2-32 to 0.
Tuning
completed.
Chapter 5 Trial Operation and Tuning
NO
Increase the
NO
value of P2-31 to
increase the
response and
stiffness.
5-17