Warning Detection (Nonfatal Error) - Omron SYSDRIVE 3G3JV Series User Manual

Maintenance Operations

7-1-2 Warning Detection (Nonfatal Error)

The warning detection is a type of Inverter protective function that does not
operate the fault contact output and returns the Inverter to its original status
once the cause of the error has been removed. The Digital Operator
flashes and display the detail of the error. If a warning occurs, take ap-
propriate countermeasures according to the table below.
Note Some warnings or some cases stop the operation of the Inverter as
described in the table.
Warning Displays and Processing
Fault Fault name and Meaning
display
uU Main Circuit Undervoltage
(flashing) (UV)
The main circuit DC voltage has
reached the undervoltage
detection level (200 VDC for the
3G3JV-A2
the 3G3JV-AB ).
%U Main Circuit Overvoltage
(flashing)
The main circuit DC voltage has
reached the overvoltage
detection level (410 VDC).
Radiation fin overheated (OH)
%h
(flashing)
The temperature of the
radiation fins of the Inverter has
reached 110 C
Overtorque detection (OL3)
%l3
(flashing)
There has been a current or
torque the same as or greater
than the setting in n60 for
overtorque detection level and
that in n61 for overtorque
detection time. A fault has been
detected with n59 for
overtorque detection function
selection set to 1 or 3.
and 160 VDC for
10 C.
Probable cause and remedy
Power supply to the Inverter has phase
loss, power input terminal screws are
loose, or the power line is disconnected.
Check the above and take necessary
countermeasures.
Incorrect power supply voltage
Make sure that the power supply
voltage is within specifications.
The power supply voltage is too high.
Decrease the voltage so it will be
within specifications.
The ambient temperature is too high.
Ventilate the Inverter or install a
cooling unit.
The mechanical system is locked or has
a failure.
Check the mechanical system and
correct the cause of overtorque.
The parameter settings were incorrect.
Adjust the n60 and n61 parameters
according to the mechanical system.
Increase the set values in n60 and
n61.
Chapter 7
7-7