Details about Function Parameters
77
× Number of poles÷120)
If the motor oscillates in the course of slip compensation, tune up F2-06 “Filter time of slip
compensation”.
F2-09
Vibration Dampening
Factory
Settings
Depend
on
inverter
model
No.
Modification
○
Setting
Range
0
～
200
The oscillation of a motor under a zero or light load may be controlled by adjusting this
parameter. Tune up the value to eliminate oscillation.
F2-10
AVR Settings
Factory
Setting
s
1
Modification
×
Setting
Range
0: Inapplicable
1: Always applicable
2: Only inapplicable in a
deceleration
AVR means auto voltage regulation. This function ensures that the output voltage is stable when
the input voltage or the DC busbar voltage oscillates, thus securing the production process and
product quality.
When the input voltage exceeds the rated value, enable AVR to prevent the motor from operating
under too high a voltage.
Compared with the “always applicable” mode, the “only inapplicable in the event of a
deceleration” mode allows faster deceleration, but requires a larger deceleration current. This is
because a deceleration causes the DC busbar voltage to rise. If the dead output voltage of AVR
also increases, the loss of the motor also increases and the mechanical energy feedback is
reduced. Therefore, the deceleration time is shorter.
CAUTION: If the load has a very large rotary inertia, AVR must be set as “Always Applicable” to
prevent a motor overheat caused by overvoltage in deceleration.
F2-11
Auto Energy-Saving Options
Factory
Setting
s
0
Modification
○
Summary of Contents for SB200 Series
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