8-30
8-4 Analog Control Parameters
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
8
Parameter Details
Explanation of Set Values
When the zero speed designation input is turned ON, the speed command is forcibly set to 0.
Set the acceleration/deceleration setting of the speed command using Soft Start Acceleration Time
(Pn312), Soft Start Deceleration Time (Pn313) or S-curve Acceleration/Deceleration Time Setting (Pn314).
When the zero speed designation input is ON, the speed command is forcibly set to 0, and if the
actual speed is equal to or less than the Position Lock Level Setting (Pn316), operation switches
to position control and the servo lock is applied. When the zero speed designation input is OFF,
operation switches to speed control. Once the servo lock is applied in position control, this state
continues as long as the zero speed designation input is ON, even if the actual speed becomes
greater than the Position Lock Level Setting (Pn316) by external forces.
Since the position command for position control is forced to be 0, properly set the position loop
gain, various error detection functions and other settings.
Use this parameter when the Control Mode Selection (Pn001) is set to 1 (speed control).
Pn315
Zero Speed Designation Selection
Setting
range
0 to 3 Unit −
Default
setting
0
Power OFF
and ON
−
Set
value
Description
0 Zero speed designation function is disabled.
1 Speed command becomes 0 upon zero speed designation input. (Refer to Figure A)
2
Speed command becomes 0 upon zero speed designation input, and servo locks with
position control when actual speed reaches below Position Lock Level Setting (Pn316).
(Refer to Figure B)
3
Servo locks with position control upon zero speed designation input and when speed
command reaches below Zero Destination Level (Pn316). (Refer to Figure C)
ON OFF ON
Figure A
Speed command
Speed control
Zero speed designation input
Speed Command Acceleration/
Deceleration Setting
(Pn312, Pn313, Pn314)
ON OFF ON
Figure B
Speed command
Position control Position control
Speed control
Actual motor speed
Pn316
Zero speed designation input
Speed Command Acceleration/
Deceleration Setting
(Pn312, Pn313, Pn314)
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