39
OVERLOAD FUNCTION and OVERLOAD CURRENT
(Parameter P06 and P07)
Used to set the operation level of the electronic thermal relay when the motor overload is
detected and the inverter output is to be stopped. Set these parameters according to the
rated current of applicable motor.
[Parameter P06: Setting of electronic
thermal relay function details]
Data
setting
value
Validity
of
function
Details of function
(Operation coasts to stop
when OL is displayed)
0 Invalid
Note that the OL trip will
occur if a current that is
140% of the rated inverter
current flows for one minute.
1 Valid
Without output frequency
derating
2 Valid
With output frequency
derating
3 Valid
Forced ventilation motor
specifications
[Parameter P06 = 1]
[Parameter P06 = 2]
[Parameter P06 = 3]
[Parameter P07:
Setting of thermal relay current]
Data setting range
(A)
0.1 to 100
∗
Set current and thermal relay
function
·
Set current × 100%
⇒
Does not trip
·
Set current × 125%
⇒
Trips
∗
What is derating?
Function to automatically
compensate operation level when
motor cooling performance drops
during low-speed operation.
Output
frequency (Hz)
Derat
ing (%
)
Output
frequency (Hz)
Derat
ing (%
)
Output
frequency (Hz)
Derat
ing (%
)
0
100
50
0
100
50
90
60
25
0
100
50
60
15
