Hitachi L200 Manual Do Utilizador

Troubleshooting

T

roub

leshooting

and Maintenance

The motor speed will not reach 

the target frequency (desired 

speed).

If using the analog input, is the 
current or voltage at [O] or [OI]?

Check the wiring.

Check the potentiometer or 
signal generating device.

Is the load too heavy?

Reduce the load.

Heavy loads activate the 
overload restriction feature 
(reduces output as needed).

Is the inverter internally limiting 
the output frequency?

Check max frequency 
setting (A004)

Check frequency upper limit 
setting (A061)

The rotation is unstable.

Is the load fluctuation too great?

Is the supply voltage unstable?

Is the problem occurring at a partic-
ular frequency?

Increase the motor capacity 
(both inverter and motor).

Fix power supply problem.

Change the output frequency 
slightly, or use the jump 
frequency setting to skip the 
problem frequency.

The RPM of the motor does not 
match the inverter output 
frequency setting.

Is the maximum frequency setting 
A004 correct?

Does the monitor function D001 
display the expected output 
frequency?

Verify the V/f settings match 
motor specifications.

Make sure all scaling (such 
as A011 to A014) is 
properly set.

Inverter data 

is not 

correct.

No downloads 

have occurred.

Was power turned OFF after a 
parameter edit but before pressing 
the Store key?

Edit the data and press the 
Store key once.

Edits to data are permanently 
stored at power down. Was the time 
from power OFF to power ON less 
than six seconds?

Wait six seconds or more 
before turning power OFF 
after editing data.

A download to 
the inverter was 
attempted.

Was the power turned OFF within 
six seconds after the display 
changed from REMT to INV?

Copy the data to the inverter 
again, and keep power ON 
for six seconds or more after 
copying.

A parameter 

will not 

change after 

an edit 

(reverts to 

old setting).

True for certain 
parameters

Is the inverter in Run Mode? Some 
parameters cannot be edited during 
Run Mode.

Put inverter in Stop Mode 
(press the Stop/reset key). 
Then edit the parameter.

True for all 
parameters

If you’re using the [SFT] intelligent 
input (software lock function)—is 
the [SFT] input ON?

Change the state of the SFT 
input, and check the B031 
parameter (SFT mode).