
4.SERVO FUNCTION DETAILS B-65270EN/05
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• Other than flexible feed gear (No. 2084, 2085, 1977, 1978) = 1/1
(Setting range: 101 to 10000 or −101 to −10000)
(Typical setting)
MCNFB = 3000 to 10000 When the normalization function
is not used:
MCNFB = −3000 to −10000When the normalization function
is used:
(6) Note
It the machine has a resonance frequency of 200 to 400 Hz, using this
function may result in a resonance being amplified, thus leading to
abnormal vibration or sound. If this happens, take either of the
following actions to prevent resonance.
• Using an observer (⇒ Subsec. 4.5.4)
(If the machine speed feedback function is used together with the
observer function, the motor speed and machine speed are
filtered out simultaneously.)
• Using a torque command filter (⇒ Subsec. 4.5.1)