8-9
Minor fault display
Probable causes and remedies
Meaning
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
Summary of Contents for SYSDRIVE 3G3FV
Page 1: ...USER S MANUAL High function General purpose Inverter SYSDRIVE 3G3FV Cat No I516 E1 4 ...
Page 16: ...Chapter 1 Introduction 1 1 Function 1 2 Nomenclature 1 3 New Functions 1 ...
Page 33: ...Chapter 2 Installation 2 1 Mounting 2 2 Wiring 2 ...
Page 112: ...Chapter 4 Trial Operation 4 1 Procedure 4 2 Operation Example 4 ...
Page 289: ...Chapter 7 Parameter Lists 7 1 Initialize Mode Parameters 7 2 Program Mode Parameter List 7 ...
Page 366: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9 ...
Page 395: ...Chapter 10 Appendix 10 1 Notes on Using the Inverter for a Motor 10 ...