8-4
Fault Display
Probable causes and remedies
Meaning
LF
Output Pha Loss
A phase loss occurred at the
Inverter’s output.
This fault is detected when
L8-07 is set to “Enabled.”
•
There is a broken wire in the output cable.
•
There is a broken wire in the motor’s winding.
•
The output terminals are loose.
→
Reset the fault after correcting its cause.
•
The motor being used has a capacity less than 10%
of the Inverter’s maximum motor capacity.
→
Check the motor and Inverter capacity.
OH
Heatsink Over tmp
The temperature of the
Inverter’s cooling fins
exceeded the setting in L8-02
or 105
C.
•
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.
RH
Dyn Brk Resistor
The braking resistor is
overheated and the protection
function set with L8-01 has
operated.
•
The deceleration time is too short and the regen-
erative energy from the motor is too large.
→
Lighten the load, increase the deceleration
time, or reduce the motor speed.
→
Change to a Braking Resistor Unit.
RR
Dyn Brk Transistr
The braking transistor is not
operating properly.
→
Try turning the power supply off and on.
→
Replace the Inverter if the fault continues to oc-
cur.
OL1
Motor Overloaded
The motor overload protection
function has operated based
on the internal electronic
thermal value.
•
The load is too large. The acceleration time, decel-
eration time, and cycle time are too short.
→
Check the size of the load and the length of the
acceleration, deceleration, and cycle times.
•
The V/f characteristics voltage is too high.
→
Check the V/f characteristics.
•
The motor’s rated current setting (E2-01) is incor-
rect.
→
Check the motor’s rated current setting
(E2-01).
OL2
Inv Overloaded
The Inverter overload
protection function has
operated based on the internal
electronic thermal value.
•
The load is too large. The acceleration time, decel-
eration time and cycle time are too short.
→
Check the size of the load and the length of the
acceleration, deceleration, and cycle times.
•
The V/f characteristics voltage is too high.
→
Check the V/f characteristics.
•
The Inverter’s capacity is too low.
→
Replace the Inverter with one that has a larger
capacity.
•
High carrier frequency.
→
Decrease the C6-01 setting.
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 ...