Omron SYSDRIVE 3G3HV SERIES User Manual

4-4
Data
display
Cause and actionDescription
rh Braking resistor overheat
(RH)
The braking resistor protection
function set with n079 worked.
Regenerative energy from the motor is excessive.
→ Increase the deceleration time, connect a small load, or
connect the Braking Resistor Unit to the Inverter.
The voltage of power supply to the Inverter is too high.
→ Lower the voltage within the rated power supply voltage.
rr Control transistor overheat
(RR)
The control transistor
protection function worked.
Regenerative energy from the motor is excessive.
→ Increase the deceleration time, connect a small load, or use
replace the Inverter with a model that has a capacity one rank
or two ranks higher.
The voltage of power supply to the Inverter is too high. Lower the
voltage within the rated power supply voltage.
%l1 Motor overload (OL1)
The electronic thermal relay
actuated the motor overload
protection function.
The load is excessive or the acceleration time, deceleration time,
and cycle time are too short.
→ Review the load size, acceleration time, deceleration time,
and cycle time.
The voltage of the V/f characteristics is excessive.
→ Review the V/f characteristics.
The rated input current of the motor set with n032 is improper.
→ Set n032 properly.
%l2 Inverter overload (OL2)
The electronic thermal relay
actuated the Inverter overload
protection function.
The load size is excessive or the acceleration time, deceleration
time, and cycle time are too short.
→ Review the load size, acceleration time, deceleration time,
and cycle time.
The voltage of the V/f characteristics is excessive.
→ Review the V/f characteristics.
The capacity of the Inverter is too small.
→ Replace the Inverter with a model that has a larger capacity.
High carrier frequency. (400V-class models)
→ Decrease the set value of n050.
%l3* Overtorque (OL3)
A current exceeding the value
set with n075 flowed for more
than the time set with n076.
→ Check whether the n075 and n076 settings are appropriate.
→ Check the machine use status and eliminate the cause of the
problem.
ef2 External error (Terminal S2)
An external error is input.
ef3 External error (Terminal S3)
→ Remove the cause of the external error.
ef4 External error (Terminal S4)
→ Remove the cause of the external error.
ef5 External error (Terminal S5)
ef6 External error (Terminal S6)
Operation Chapter 4

Omron SYSDRIVE 3G3HV SERIES Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3HV SERIES
Category	Inverter
Language	English