41
DRIVE THE MOTOR
3
Before operation
3.3.2 Overheat protection of the motor by the inverter (Pr. 9)
Set the rated motor current in Pr. 9 Electronic thermal O/L relay to protect the motor from overheat.
Parameter
Number
Name Initial Value Setting Range Description
9
Electronic thermal O/L
relay
Rated Inverter
current ∗
0 to 500A Set the rated motor current.
* Refer to page 125 for the rated inverter current value.
Changing
example
Change Pr. 9 Electronic thermal O/L relay to 7A according to the motor rated current. (FR-D740-3.7K)
Operation Display
1.
Screen at powering ON
The monitor display appears.
2. Press to choose the PU operation mode.
PU indication is lit.
3. Press to choose the parameter setting
mode.
PRM indication is lit.
(The parameter number read previously
appears.)
4. Turn until " " (Pr. 9) appears.
5. Press to read the present set value.
" " (8A (initial value)) appears for the FR-
D740-3.7K.
(Refer to page 125 for initial value of the rated
inverter current.)
6. Turn to change the set value to " "
(7A).
7. Press to set.
Flicker...Parameter setting complete!!
Turn to read another parameter.
Press to show the setting again.
Press twice to show the next parameter.
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