User manual

9 Functions and operations in the position control mode
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9.9 Damping control
Even if the motor is assembled into a machine of low rigidity, residual vibration can be reduced during
positioning, in order to shorten the positioning time. (An optimal value varies depending on the equipment
and its operating conditions.)
Set a damping control frequency under each of four operation data numbers from 0 to 3.
When the system parameter for analog input signals [SyS-1-05] is set to “Enable,” one analog point as well as
three digital points are available to assign settings. If the parameter is set to “Disable,” four digital points are
available to assign settings.
Analog input signal parameter [SyS-1-05]
Operation data Enable (initial value) Disable
No.0
Analog setting
(internal potentiometer VR1)
Digital setting
No.1 Digital setting
No.2 Digital setting
No.3 Digital setting
Note
If operation data No. 0 is selected for damping control, the torque limit value (p.59) set
under operation data No. 0 will also be selected. Different operation data numbers cannot
be selected for the two parameters.
Operation data M1 input M0 input
No.0 OFF OFF
No.1 OFF ON
No.2 ON OFF
Select a desired damping control frequency from among
the predefined settings, based on a combination of
ON/OFF statuses of M0 and M1 inputs.
No.3 ON ON

Analog setting
1.
Set the system parameter for analog input signals [SyS-1-05] to “Enable.”
Note
When a system parameter has been changed, the new setting will become effective
after the power is cycled. If a 24 VDC power supply is used, also cycle the 24 VDC
power supply.
2.
Turn the M0 and M1 inputs OFF and select operation data No. 0.
3.
Use the internal potentiometer VR1 to set the damping control frequency.
The new damping control frequency becomes effective immediately, even when operation is in progress.
Setting range: 7.00 to 30.00 Hz
Factory setting: Disable
The damping control frequency set by the VR1 can be monitored in MEXE02.
30 to 7 Hz
(the new setting
becomes effective
immediately)
30 Hz range
30 Hz
Ineffective range
To change from
the ineffective
range to the
30 Hz range,
do so while the
motor is stopped.
VR1
Note
To change the damping control frequency from the ineffective range to the 30 Hz
range, stop the motor before turning the VR1. Changing the setting while the motor is
operating may cause the motor to move the equipment abruptly.