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
The initial value of the FR-E740-026 or less, FR-E720S-050 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 5A 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 6.00A for FR-E740-060 appears.
Turn the digital dial clockwise to change the set
value to "5.00" (5A).
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: Setting of the electronic thermal O/L relay
5 - 2
Rated inverter
Electronic thermal O/L
relay
output current
Operation
Initial Value Setting Range
0–500A
Basic settings
Description
Set the rated motor current.
Display
PU indication is lit.
PRM indication is lit.
The parameter number read previously appears.
Refer to appendix A
for the rated inverter
current value.
Flicker ... Parameter setting complete!
I001744E