Omron EasySpeed 3G3JE, User Manual, Page: 62 / 133

Chapter 3
3-2
Operation
■ Operation
• This Inverter can be set to operate from low speed to high speed. Operate the Inverter only after
sufficiently confirming the allowable range for the motor installation being used.
■
Operation after Power Interruptions
• If continuing operation is selected for the momentary power interruption restart selection (P09), the
system may unexpectedly start operation after a momentary power interruption is reset. Exercise
suitable caution.
■
Operation Command Selection
• If the operation command selection parameter (P10) is set to “PLC” to enable using the control cir-
cuit terminal inputs (STF and STR), the motor may start operation when the power supply is turned
ON or an alarm is reset if the control circuit terminals are left ON. Exercise suitable caution. Also, if
signals are checked during operation and a voltage is incorrectly applied to the control circuit termi-
nals, the motor may start moving unexpectedly. Always check safety before performing signal
checks.
■
Motor Overheating Protection (Electronic Thermal)
• The Inverter uses an electronic thermal to protect the motor from overheating. Set the rated current
of the motor in the rated motor current parameter (P01). If more than one motor is operated with
one Inverter, set the rated motor current parameter (P01) to 0.0 to disable motor overload detec-
tion, and install a thermal relay between the Inverter and each motor. Set the thermal relay to 1.0
times the nameplate current at 50 Hz and to 1.1 times the nameplate current at 60 Hz.
Precautions for Safe Use
Precautions for Correct Use