Omron SYSDRIVE 3G3FV User Manual

8-9
Minor fault display Probable causes and remediesMeaning
OH (flashing)
Heatsink Over tmp
The temperature of the
Inverter’s cooling fins
exceeded the setting in L8-02.
• The ambient temperature is too high.
→ Install a cooling unit.
• There is a heat source nearby.
→ Remove the heat source.
• The Inverter’s cooling fan has stopped.
→ Replace the cooling fan.
(Contact your OMRON representative.)
• High carrier frequency. (400V-class models)
→ Decrease the C6-01 setting.
OH2 (flashing)
Over Heat 2
An OH2 alarm signal (Inverter
overheating alarm signal) was
input from a multi-function
input.
• Clear the multi-function input’s overheating alarm
input.
OL3 (flashing)
Overtorque Det 1
There has been a current
greater than the setting in
L6-02 for longer than the
setting in L6-03.
→ Make sure that the settings in L6-02 and L6-03
are appropriate.
→ Check the mechanical system and correct the
cause of the overtorque.
OL4 (flashing)
Overtorque Det 2
There has been a current
greater than the setting in
L6-05 for longer than the
setting in L6-06.
→ Make sure that the current setting in L6-05 and
time setting in L6-06 are appropriate.
→ Check the mechanical system and correct the
cause of the overtorque.
OS (flashing)
Over speed
The speed has been greater
than the setting in F1-08 for
longer than the setting in
F1-09.
• Overshooting/undershooting are occurring.
→ Adjust the gain again.
• The reference speed is too high.
→ Check the reference circuit and reference gain.
• The settings in F1-08 and F1-09 aren’t appropriate.
→ Check the settings in F1-08 and F1-09.
PGO (flashing)
PG open
The PG is disconnected.
The Inverter is outputting a
frequency, but PG pulses aren’t
being input.
• There is a break in the PG wiring.
→ Fix the broken/disconnected wiring.
• The PG is wired incorrectly.
→ Fix the wiring.
• Power isn’t being supplied to the PG.
→ Supply power to the PG properly.
• The torque limit is set to 0 through CompoBus/D
communications. (Applies only to flux vector con-
trol.)
→ Set F9-05 to 0 (torque limit disabled).
Maintenance Operations Chapter 8

Omron SYSDRIVE 3G3FV Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3FV
Category	Inverter
Language	English