Yaskawa Sigma II Series Servo System - Manual (Page 118)

Sigma II User’s Manual Chapter 5: Parameter Settings and Functions
5 - 32
Control Block Diagram
The following diagram illustrates a control block for position control.
5.2.6 Contact Input Speed Control
This function provides a method for easy speed control. It allows the user to initially
set three different motor speeds with parameters, and then select one of the speeds
externally using a contact input.
Differentiation
Smoothing
X1
X2
X4
Error
counter
Kp
Feed-
forward gain
Primary
lag filter Bias
Speed
loop
Current
loop
M
Frequency
dividing
Pn201
Pn204 Pn202
Pn203
+
-
Pn102
Pn203
Pn202 Pn10A
Pn107
Pn109
Servomotor
PG
Pn200.0
Reference
pulse
PG signal
output
Servo Amplifier (position control)
Encoder
Bias addition
range
Pn108
+
+ +
B
A
B
A
The servomotor operates at
the speed set in the parameter.
M
Servo amplifier
Servomotor
Speed selection
External speed
SPEED1 Pn301
SPEED2 Pn302
SPEED3 Pn303 setting devices and
pulse generators
are not required.
CN1-41
CN1-45
CN1-46
Contact
input
/P-CON (/SPD-D)
/P-Cl (/SPD-A)
/N-Cl (/SPD-B)