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Term
ENCODER
AUTO TUNING (Automatic Tuning)
OVERRIDE FUNCTION
CREEP SPEED
GAIN
SERVO AMPLIFIER
774
This device turns the input data into a binary code of 1 (ON) and 0 (OFF). A type of pulse generator.
For the main
signal
Ball bearing
Z
Input axis
A
Photoreceptor
(phototransistor)
Rotary encoder
Light source
Collimator lens
(LED)
Main scale
Reference
zero point Index
scale
Linear encoder
Properties such as responsiveness and stability of machines driven with a servomotor are affected by changes in
the inertia moment and rigidity due to changes in the machine load, etc.
This function automatically adjusts the speed loop gain and position loop gain to match the machine state, so the
machine's performance can be maintained at its optimum state.
A real time automatic tuning function should be used for machines having large load fluctuations.
With this function, the speed during positioning operations (current speed) can be varied between 1 and 300%.
The speed can also be changed by the same variable rate for continuous positioning with differing designated
speeds.
A speed at which the machine moves very slowly.
It is difficult for the machine to stop accurately when running at high speed, so the movement must first be
changed to the creep speed before stopping.
Refer to the term "NEAR-POINT DOG".
The changing of the ratio between two values having a proportional relation. Seen on a graph, the changing of
the incline of the characteristics.
13
10
O
u
p t
t u
2
Input
For example, when 10 is output for an input of 10, the output can be changed to 12, 5, etc., by changing the gain.
Refer to the term "DRIVE UNIT".
Description
For the zero
point signal
Code disk
B
Light source
Index
(light-emitting diode)
scale
b
Photoreceptor
(photodiode)
a
a
b
z
Raising
the gain
L
o
w
r e
n i
g
the gain
10
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Troubleshooting
