
B-65150E/04 4. SERVO FUNCTION DETAILS
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(5) Overshoot compensation type 2
(a) Overview
For a machine using, for example, 0.1-µm detection units, the use
of the conventional overshoot compensation function may
generate minute vibrations when the machine stops, even if the
parameter for the number of incomplete integrations is set.
This is caused by the repeated occurrence of the following
phenomena:
• While the machine is in the stopped state, the positional
deviation falls within the compensation valid level, and the
integrator is rewritten. Subsequently, the motor is pushed
back by a machine element such as a machine spring element,
causing the positional deviation to exceed the compensation
valid level.
• While the positional deviation is beyond the threshold, a
torque command is output to decrease the positional
deviation, then it decreases to below the threshold again.
In such a case, set the bit indicated below to suppress the minute
vibration.
(b) Series and editions of applicable servo software
Series 9080/K(11) and subsequent editions (Series 15-B, 16-C,
18-C)
Series 9090/C(03) and subsequent editions (Series 16i, 18i, 21i,
Power Mate i)
Series 90A0/A(01 and subsequent editions (Series 15i, 16i, 18i,
21i, Power Mate i)
(c) Setting parameters
#7 #6 #5 #4 #3 #2 #1 #0
1742
−
OVS1
2202
−
OVS1 (#3) 1: Overshoot compensation is enabled only once after the termination
of a move command.