4-88
4-5-14 Position Lock Function (Speed, Internally-set Speed
Control)
H
Functions
•
If controlling the position without adding a position control loop, the position may slip due to tempera-
ture drift from the A/D converter, etc. In this case, this function stops the position loop by using an ex-
ternal signal to switch from Speed Control Mode to Position Control Mode.
•
If position lock command (PLOCK: CN1-41) is input, when the number of Servomotor rotations is
equal to or less than the rotation speed set in Pn501 (position lock rotation speed), the Unit switches
from Speed Control Mode to Position Control Mode, and the Servomotor becomes position locked
(Pin No. is allocated in the default settings).
•
When the internal speed control value is equal to or greater than Pn501 (position lock rotation speed),
the Servomotor will rotate.
•
Loop gain during position lock is set using Pn102 (position loop gain).
H
Parameters Requiring Settings
Parameter
No.
Parameter name
Explanation
Reference
Pn50d.0
Input signal
selection 4
PLOCK signal
selection
PLOCK must be allocated. (See note 1.)
4-4-3 Important
Parameters
Pn501
Position lock
rotation speed
Set the position lock rotation speed. Setting range:
0 to 10,000 (r/min).
4-4-4 Parameter
Details
Pn102
Position loop gain
Use this parameter to adjust the lock force during
position lock.
e a s
Note 1.
If changing the default setting, set Pn50A.0 (input signal selection mode) to 1 (user-defined
settings).
Note 2.
Set Pn000.1 (control mode selection) to A (speed control with position lock function) to allo-
cate PLOCK to pin CN1-41.
Operation
Chapter 4
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