F0.01 = 2 V/F Mode, Common Problem Solving Methods; Fault Analysis And Countermeasures - HNC Electric HV610 Series User Manual

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
Motor oscillation during
operation
High power start-up over -
current reporting
The current in operation is
too high
Motor noise is high
Sudden unloading of
heavy load to report over
voltage, deceleration to
report over voltage
Surge overload to report
over - current, speed up
reporting over - current

6.4 Fault analysis and countermeasures

Panel
Name
display
Accelerated
OC1
over current
Increase the oscillation suppression parameter ( F3 - 11 ) by 10 units ( maximum adjustment to

100 );
Lower the torque increase (F3 - 01) and adjust downward by 0.5 %.

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 %.

appropriately increase the carrier frequency value ( F0 - 22 ) in units of 1.0 kHz;

( note: increasing the carrier frequency motor leakage current will increase )

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 );
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 % );
Troubleshooting of cause of failure
There is a ground or short circuit in
the frequency inverter output
circuit
The control mode is FVC or SVC
and there is no parameter
identification
Quick acceleration condition,
acceleration time setting is too
short
Solutions
Countermeasures for fault handling
● Eliminate peripheral faults and detect if short circuit occurs in the
motor or interrupt contactor
● Set motor parameters according to the motor nameplate to identify
motor parameters
● Increase the acceleration time
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