YASKAWA Sigma Mini SGMM Series User Manual page 73

APPLICATIONS
2.2.6 Contact Input Speed Control
A control block diagram for a Servopack used for position control is shown here.
2
2.2.6 Contact Input Speed Control
The contact input speed control function provides easy-to-use speed control. It allows the
user to initially set three different motor speeds in parameters, select one of the speeds exter-
nally by contact input and run the motor.
This function can be used for speed/torque control only.
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Control Block Diagram
Servopack for position control
Differentiation
Cn-02
Cn-26
Reference
X1
pulse
Smoothing
X2
X4
PG signal
output
IN1
Contact
input
IN2
No external speed setting
device or pulse generator is
required.
— 2-28 —
Cn-1D Cn-24 Cn-27
Cn-1C
First
Feed- B
order
forward gain
Bias
A
lag filter
Cn-25
Cn-24
Cn-1A
B
+
+ +
Error Speed
+
A
Kp
counter loop
Cn-25 −
X4
Cn-0A
Frequency
dividing
Servopack
CN1-1
CN1-2
Servomotor
Speed selection
SPEED 1 Cn-1F
The motor is operated at the
SPEED 2 Cn-20
speed set in the parameter.
SPEED 3 Cn-21
Parameter
/COIN
signal
Servomotor
Current
M
loop
PG
Encoder
M