Yaskawa Matrix Converter - Manual (Page 115)

Parameter Tables
5-
15
„ b9: Zero-servo
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control
Methods MEMO-
BUS
Register
Page
Display V/f
Open
Loop
Vector
Flux
Vector
b9-01
Zero Servo Gain Adjust the strength of the zero-servo
lock.
Enabled when the “zero-servo command”
is set for the multi-function input. When
the zero-servo command has been input
and the frequency reference drop below
excitation level (b2-01), a position con-
trol loop is created and the motor stops.
Increasing the zero-servo gain in turn
increases the strength of the lock.
Increasing it by too much will cause
oscillation.
0 to 100 5 No No No A 1DAH 6-123
Zero Servo Gain
b9-02
Zero Servo Com-
pletion Width Sets the output width of the P-lock com-
pletion signal.
Enabled when the “zero-servo comple-
tion (end)” is set for a multi-function
input. The zero-servo completion signal
is on when the current position is within
the range (the zero-servo position
± zero-
servo completion width.)
Set the allowable position displacement
from the zero-servo position to 4 times
the pulse rate of the PG (pulse generator,
encoder) in use.
0 to
16383
10 No No No A 1DBH 6-123
Zero Servo Count