101
(11) BOOST - ON/OFF
The minimum current applied to the internal motor when starting the servo
can be
set. Since a small travel does not start the motor, it essentially
feels like the dead band was expanded. The motor can be immediately
started by adjusting the minimum current which can start the motor.
OFF : It is the boost ON at the time of low-speed operation.(In the case of usual)
ON : It is always the boost ON. (When quick operation is hope)
[Relationship between boost set value and servo operation]
Small Value Setting
Motor reacts to a minute current and operation becomes
smooth.
Large Value Setting Initial response improves and output torque increases. How-
ever, if the torque is too large, operation will become rough.
(12) DAMPER
The characteristic when the servo is stopped can be set.
When smaller than the standard value, the characteristic becomes an over-
shoot characteristic. If the value is larger than the standard value, the brake is
applied before the stop position.
Especially, when a large load is applied, overshoot, etc. are suppressed by in-
ertia and hunting may occur, depending on the conditions. If hunting (phenom-
ena which cause the servo to oscillate) occurs even though the Dead Band,
Stretcher, Boost and other parameters are suitable, adjust this parameter to a
value larger than the initial value.
[Relationship between damper set value and servo operation]
Small Value Setting
When you want to overshoot. Set so that hunting does not
occur.
Large Value Setting When you want to operate so that braking is not applied. How-
ever, it will feel like the servo response has worsened.
Note: If used in the hunting state, not only will the current consumption in-
crease, but the life of the servo will also be shortened.
Summary of Contents for CGY755
Page 112: ......
