OMRON Sysdrive 3G3HV - Detector Cooling Section

does not save unnecessary power supply to the motor, refer to the following
table to check the probable cause of the trouble and take countermeasures
against the trouble.
Running conditions of the motor may inhibit the Inverter from performing effective
energy-saving control.
Problem Probable cause Remarks
Output power does not
change
Inverter does not perform
effective energy-saving
control
Inverter is running at a
frequency exceeding 120
Hz
Load factor of the motor is
too large
The Inverter does not save unnecessary
power supply to the motor while the
Inverter is running at a frequency
exceeding 120 Hz.
The Inverter does not perform effective
energy-saving control if the load factor of
the motor is too large.
Reference: Energy-saving control of motor
with 7.5-kW output
Energy saved (W)
Output frequency: 60 Hz
Constantly rotating motor
drops its rotation speed for
a moment
Motor vibrates or does not
rotate smoothly when the
load is light
Motor stalls
Motor changes its rotation
speed periodically in
synchronization with the
mean power time
Value of the
energy-saving coefficient
K2 is too small and the
ideal output voltage
calculated by the Inverter
is low
Mechanical system is
resonating with the
Inverter
Output voltage is too
small
Speed ripples are
generated by the search
operation voltage change
rates
Load factor (%)
Set K2 with n096 according to the capacity
of the motor.
Reset K2 to the value for the capacity of a
motor one rank lower than the motor in
use if the same trouble occurs after K2 is
set according to the capacity of the motor.
Set the mean power time with n099 to a
larger value.
Set the lower output voltage limits with
n097 and n098 to larger values.
Set the energy-saving coefficient K2 with
n096 to a larger value.
Reset K2 to the value for the capacity of a
motor one rank lower than the motor in
use if the same trouble occurs after K2 is
set according to the capacity of the motor.
Set the values of n101 and n102 to
smaller values.
Set the search operation voltage limit with
n100 to 0 so that the search operation
function will not work.