OMRON Sysdrive 3G3HV - Detector Cooling Section

If the cycle of the vibration coincides with the mean power time set with
n099, the search operation function is not working properly. Set the
search operation voltage limit with n100 to 0 to invalidate the search
operation mode or set the 100% and 5% search operation voltage
steps with n101 and n102 to smaller values so that the output voltage
range of the Inverter performing search operation will be narrow.
Rotating Motor Drops Rotation Speed for an Instant after Rotation Speed of
Motor Is Accelerated.
Energy-saving parameters are improper.
The value of the energy-saving coefficient K2 set with n092 is improper
if the motor drops its rotation speed for an instant after the rotation
speed of the motor is accelerated by the Inverter in energy-saving
mode.
Reset K2 to the value for the capacity of a motor one rank lower than the
motor in use. Refer to Section 3-5-1.
Motor Continues to Rotate After Inverter Output is Shut OFF
The DC control current is insufficient to stop the motor.
Take the following actions to adjust the DC control current.
Set the DC control current with n064 to a higher current.
Set the DC braking time with n065 to a longer time.
OV is Detected or Fan Stalls When Operated
The DC control current is insufficient to start the fan.
OV will be detected or the fan will stall if the fan is operated while the fan
is rotating.
To prevent this, reduce the rotation speed of the fan with a sufficient DC
control current set with n066.
Output Frequency Does Not Reach Reference Frequency
•The reference frequency is within the jumping frequency ranges.
The output frequency will not change within the jumping frequency
ranges if the frequency jump function is used.
Check whether jumping frequency 1 and 2 set with n058 and n059 and
the jumping frequency width set with n060 are proper.
•The reference frequency exceeds the output frequency upper limit.
The output frequency upper limit is obtained from the following.
Maximum frequency (n021) x output frequency upper limit (n 030)/100
Check whether the values set with n012 and n030 are proper.
Inverter Overload “OL2” is Detected
For a 400-V Inverter, if the carrier frequency “n050” is set to a value higher
than the default setting, the Inverter overload “OL2” detection value
will decrease in consideration of an increase in the heat that will be generated
by the change in the carrier frequency. Since the detection value
is set to decrease by approximately 15% for every change to a rank
higher than the default setting , the Inverter overload “OL2” may be detected
prior to the motor overload “OL1” depending on the set value. Set
the carrier frequency to a lower level by one rank.