YASKAWA SGDV-OCA05A

10.3 Parameter Settings for Fully-Closed Loop Control
10.3.1 Control Block Diagram for Fully-Closed Loop Control
10-5
10
Fully-Closed Loop Control
10.3 Parameter Settings for Fully-Closed Loop Control
This section describes the parameter settings that are related to fully-closed loop control.
10.3.1 Control Block Diagram for Fully-Closed Loop Control
The control block diagram for fully-closed loop control is provided below.
* The connected device depends on the type of external encoder.
Note: You can use either an incremental or an absolute encoder. If you use an absolute encoder, set Pn002 to
n.1 (Use the absolute encoder as an incremental encoder).
Parameter to Set Setting Reference
Pn000 = n.X Motor direction
page 10-6
Pn002 = n.X External encoder usage method
Pn20A Number of external scale pitches
page 10-7
Pn281
Encoder divided pulse output signals (PAO, PBO, and PCO) from the
SERVOPACK
page 10-7
Pn20E and Pn210 Electronic gear ratio
page 5-40
Pn51B Excessive deviation level between Servomotor and load positions
page 10-8
Pn52A Multiplier for one fully-closed rotation
Pn006/Pn007 Analog monitor signal
page 10-9
Pn22A = n.X Speed feedback method during fully-closed loop control
page 10-9
−
ENC
*
A.d10
Pn22A
Pn20E
Pn210
A
B
+
Pn281
1
SERVOPACK
Deviation
counter
Position
control loop
Unit conversion
Pn20A
Speed
feedback
Speed
loop
Speed conversion
Alarm
detection
Unit conversion
Pn20A
Electronic gear
Divider
Speed conversion
Motor
External
encoder
Serial
conversion
Machine
Electronic
gear
Position reference
Position deviation
Encoder divided
pulse output