YASKAWA VS-626M5 Instruction Manual page 149

Adjustment Item and Procedure
(1)
Turn OFF orientation signal (ORT).
Tuneup completed.
(Bit 4 of C2-22 turned ON.)
Adjust control constants accord-
ing to machine specifications.
Turn ON orientation signal (ORT).
NO
Is stopping smooth?
YES
Adjust virtual stop
position offset (C2-13).
Is position
YES
accuracy insuffi-
cient, or is there
Adjust position control
hunting?
proportional gain (C2-02).
NO
Turn OFF orientation signal (ORT).
Select M gear.
Turn ON orientation signal (ORT).
Is position
YES
accuracy insuffi-
cient, or is there
hunting?
Adjust position control
proportional gain (C2-03).
NO
Turn OFF orientation signal (ORT).
Select L gear.
Turn ON orientation signal (ORT).
Is position
YES
accuracy insuffi-
cient, or is there
hunting?
Adjust position control
proportional gain (C2-04).
NO
Turn OFF orientation signal (ORT).
Adjustment completed.
8.9 Encoder Orientation Control Mode Adjustment Procedure
If a malfunction occurs during tuneup, reset the system, and then per-
form the tuneup operation again.
Tuneup completed
Turn ON tuneup operation selection (Bit 4 of C2-22 turned ON).
Adjust Control Constants
Adjust Virtual Stop Position Offset (C2-13)
S Perform adjustment so that final run-on is not delayed, and there is no
overshooting.
Offset large
Stop position
S If the load inertia changes, the characteristics will also change. Check
the characteristics for the H, M, and L gears individually.
H Gear Selection
Adjust Proportional Gain (C2-02)
S If the ORE signal is not output close to the stop position, the gain will
increase.
S Even if the ORE signal is output, if the shaft load is unsteady, the gain
will be reduced.
Check M Gear Selection
Interface input status (U1-09)
Adjust Proportional Gain (C2-03)
S If the ORE signal is not output close to the stop position, the gain will
increase.
S Even if the ORE signal is output, if the shaft load is unsteady, the gain
will be reduced.
Note: If there is no L gear selection in the machine specifications, omit
the following L gear adjustment procedure.
Check L Gear Selection
Interface input status (U1-09)
Adjust Proportional Gain (C2-04)
S If the ORE signal is not output close to the stop position, the gain will
increase.
S Even if the ORE signal is output, if the shaft load is unsteady, the gain
will be reduced.
8 -15
Details
Offset small
Time
Lit when M gear is selected
Lit when L gear is selected
8