User`s manual

5-18
5
Zero Servo Control: b9
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO-
BUS
Register
Page
V/f
V/f
with
PG
Open
Loop
Vector
Closed
Loop
Vector
Display
b9-01
Zero Servo
Gain
Adjust the strength of the
zero-servo lock.
Enabled when the “zero-servo
command” is set for a multi-
function input. When the zero-
servo command has been
input and the frequency refer-
ence drops below DC Injec-
tion level (b2-01), a position
control loop is created and the
motor stops. Increasing the
zero-servo gain increases the
strength of the lock. Increas-
ing it by much causes oscilla-
tions.
0 to 100 5 No No No No A 1DAH 6-125
Zero Servo
Gain
b9-02
Zero-Servo
completion
bandwidth
Sets the bandwidth of the Zero
Servo completion output.
Enabled when the “zero-servo
completion (end)” is set for a
multi-function output. The
zero-servo completion signal
is ON when the current posi-
tion is within the range (the
zero-servo position + zero-
servo completion width.)
Set b9-02 to 4 times of the
allowable displacement pulse
amount at the PG.
0 to
16383
10 No No No No A 1DBH 6-125
Zero Servo
Count