HNC Electric HV480 Series, Руководство пользователя

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long cycle power generation time such as stone sawing machine ).
When an over voltage fault occurs in the sudden surge load, please lower the ff - 14 " over voltage suppression
starting voltage" setting and suggest to adjust it to about 720 v.
Large inertia rapid deceleration load: if the inverter is equipped with braking resistor and the input voltage level of
the inverter is 360 ~ 420 v, please adjust FF - 32 " starting voltage of brake unit" setting to 690 v and F3 - 10 " V/F
over-excitation gain" setting to 0. If the over voltage is still present, please lower the FF - 14 " over voltage
suppression start voltage" setting, which is recommended to be adjusted to about 740 v.
6.3 F 0.01 = 2 V/F mode, common problem solving methods
Description of
phenomenon
Solutions
Motor oscillation during
operation

Increase the oscillation suppression parameter ( F3 - 11 ) by 10 units ( maximum adjustment to
100 );
High power start-up over -
current reporting

Lower the torque increase (F3 - 01) and adjust downward by 0.5 %.
The current in operation is
too high

Set the rated voltage ( F1 - 02 ) and rated frequency ( F1 - 04 ) of the motor correctly;

Lower the torque increase (F3 - 01) and adjust downward by 0.5 %.
Motor noise is high

appropriately increase the carrier frequency value ( F0 - 22 ) in units of 1.0 kHz;

( note: increasing the carrier frequency motor leakage current will increase )
Sudden unloading of
heavy load to report over
voltage, deceleration to
report over voltage

Confirm that the over voltage suppression enable ( ff - 15 ) is set to the enable state; Increase the
over voltage suppression gain ( ff - 16 / ff - 17, factory 30 ) by 10 units ( maximum adjustment to
100 );

Reduce the over voltage suppression operating voltage ( ff - 14 factory 760 v ) and reduce it in 10v
units ( minimum adjustment to 700 v );
Surge overload to report
over - current, speed up
reporting over - current

Increase the over current suppression gain ( ff - 12 factory 20 ) by 10 units ( maximum adjustment
to 100 );

Reduce over current suppression starting current ( ff - 10 factory 150 % ), decrease in 10 %
( minimum adjustment to 50 % );
6.4 Fault analysis and countermeasures
Name
Panel
display
Troubleshooting of cause of failure Countermeasures for fault handling
Accelerated
over current
OC1
There is a ground or short circuit in
the frequency inverter output
circuit
● Eliminate peripheral faults and detect if short circuit occurs in the
motor or interrupt contactor
The control mode is FVC or SVC
and there is no parameter
identification
● Set motor parameters according to the motor nameplate to identify
motor parameters
Quick acceleration condition,
acceleration time setting is too
short
● Increase the acceleration time