Overheat Protection Of The Motor By The Inverter - Mitsubishi Electric FR-E700 Instruction Manual

Simple mode parameter list
5.1.1

Overheat protection of the motor by the inverter

Set this parameter when using a motor other than the Mitsubishi standard motor (SF-JR) and
Mitsubishi constant torque motor (SF-HRCA). Set the rated motor current in Pr. 9 "Electronic thermal
O/L relay" to protect the motor from overheat.
Pr. No. Name
9
Electronic thermal O/L relay
The initial value of the FR-E720S-050SC or less and FR-E740-026SC or less, is set to 85% of the
rated inverter current.
Refer to appendix A for the rated inverter current value.
Example Change the Pr. 9 "Electronic thermal O/L relay" setting to 5 A according to the motor rated current.
Screen at powering on
The monitor display appears.
Press the PU/EXT key to choose the PU
operation mode.
Press the MODE key to choose the parameter
setting mode.
Turn the digital dial until P.9 (Pr. 9) appears.
Press the SET key to show the currently set value.
The setting 6.00 A for FR-E740-060SC appears.
Turn the digital dial clockwise to change the set
value to "5.00" (5 A).
Press the SET key to set.
By turning the digital dial, you can read another parameter.
Press the SET key to show the setting again.
Press the SET key twice to show the next parameter.
Fig. 5-1:
5 - 2
Initial Value
Rated inverter current
Operation
Setting of the electronic thermal O/L relay
Setting Range Description
0–500 A Set the rated motor current.
Display
PU indication is lit.
PRM indication is lit.
The parameter number read previously appears.
Flicker ... Parameter setting complete!
Basic settings
Refer to appendix A for
the rated inverter
current value.
I001744E