YASKAWA SGDV - Speed Feedback Method During Fully-Closed Loop Control

9.2 Settings for Fully-closed Loop Control
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9
Fully-closed Loop Control
9.2.9 Speed Feedback Method during Fully-closed Loop Control
Use Pn22A.3 to select the speed feedback method during fully-closed loop control: Normally, set Pn22A.3 to
0 (Uses motor encoder speed.). Set Pn22A.3 to 1 (Uses external encoder speed.) when connecting a direct
drive motor and high-resolution external encoder.
Note: This parameter cannot be used when Pn002.3 is set to 0.
Parameter Meaning When Enabled Classification
Pn22A
n.0 Uses motor encoder speed. [Factory setting]
After restart Setup
n.1 Uses external encoder speed.
SERVOPACK
Speed or torque
reference
Speed feedback
+
-
Speed
conversion
Machine
External encoder
Encoder output
pulse
Motor
Encoder
Divider
Serial
conversion
Speed
loop
Pn22A
Speed conversion
Unit conversion Pn20A