10.3 Parameter and Object Settings for Fully-closed Loop Control
10.3.1 Control Block Diagram for Fully-Closed Loop Control
10-5
10
Fully-Closed Loop Contr
ol
10.3
Parameter and Object 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 and
Object to Set
Setting
Position
Control
Speed
Control
Torque
Control
Reference
Pn000 (2000 hex)
= n.
X
Motor direction
√
√
√
Pn002 (2002 hex)
= n.X
External encoder usage method
√
√
√
Pn20A (220A hex)
Number of external scale pitches
√
√
√
Pn281 (2281 hex)
Encoder divided pulse output signals
(PAO, PBO, and PCO) from the SERVO-
PACK
√
√
√
–
External absolute encoder data reception
sequence
√
√
√
Position User Unit
(2701 hex)
Electronic gear ratio
√
−
−
Pn51B (251B hex)
Excessive deviation level between Servo-
motor and load positions
√
−
−
Pn52A (252A hex)
Multiplier for one fully-closed rotation
√
−
−
Pn006 (2006 hex)/
Pn007 (2007 hex)
Analog monitor signal
√
√
√
Pn22A (222A hex)
= n.X
Speed feedback method during fully-
closed loop control
√
−
−
−
ENC
*
A.d10
Pn22A
Position unit
multiplier
+
Pn281
1
Position unit multiplier
Position
deviation
Motor
SERVOPACK
Deviation
counter
Position
control loop
Unit conversion
Pn20A
Speed
feedback
Speed
loop
Speed conversion
Alarm
detection
Unit conversion
Pn20A
Divider
Speed conversion
External
encoder
Serial
conversion
Machine
Speed
reference
Position
reference
Encoder
divided
pulse
output