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

Maintenance Operations

4-1-2 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 appropriate countermeasures according to the table below.
Note Some warnings or some cases stop the operation of the Inverter as described in
the table.
H Warning Displays and Processing
Fault display Warning name and Meaning
Main Circuit Undervoltage (UV)
(flashing)
The main circuit DC voltage has
reached the undervoltage detection
level (160 V DC for the 3G3JV-A1j).
Main Circuit Overvoltage
(flashing)
The main circuit DC voltage has
reached the overvoltage detection
level (100-V models: 410 V DC min.).
Radiation fin overheated (OH)
(flashing)
The temperature of the radiation fins
of the Inverter has reached 110_C ±
10_C.
Communications standby (CAL)
(flashing)
No normal DSR message has been
received during RS-422A/4895
communications.
The Inverter detects this warning only
when RUN command selection (n02)
is set to 2 or frequency reference
selection (n03) is set to 6. Until the
warning is reset, no input other than
communications input will be ignored.
Overtorque detection (OL3)
(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.
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.
• A short-circuit, ground fault, or disconnection has
occurred on the communications line.
→ Check and correct the line.
• The termination resistance setting is incorrect.
→ Set the termination resistance of only the
Inverter located at each end of the network to
ON.
• Master's program error.
→ Check the start of communications and
correct the program.
• Communications circuit damage.
→ If a CAL or CE error is detected as a result of
a self-diagnostic test, change the Inverter.
• 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 4
4-7