Instruction manual
7.
ADJUSTMENT
7.
ADJUSTMENT
7.1 What
Is
Gain Adjustment?
7.1
.I
Difference between servo amplifier and other drives
Besides the servo amphfier, there are other motor dnves such
as
an
inverter and stepping dnver. Among
these drives, the servo amphfier requires gain adjustment.
The inverter and stepping dnver are
in
an open loop (actual motor speed and position are not detected on
the driver side).
Load
Inverter
On
the other hand, the servo amphfier always detects the positions and speeds
of
the motor and machme
using the servo motor encoder, and exercises control
to
match the position and speed commands with the
actual motor (machme) position and speed. In the servo system, adjustment
is
needed because:
Load
Servo amDlifier Servo motor
r\
(1)
Response changes accorhng to the inertia moment
of
the machme;
(2)
Vibration occurs due
to
the resonance point, etc. pecullar to the mache; and
(3)
Operation delay and accuracy speclfication Mer between machmes and response should satisfy ths
specdication.
7-
1