OMRON Sysdrive 3G3HV - Detector Cooling Section

Data
display
rh
rr
Description
Braking resistor overheat
(RH)
The braking resistor protection
function set with n079 worked.
Control transistor overheat
(RR)
The control transistor
protection function worked.
%l1 Motor overload (OL1)
The electronic thermal relay
actuated the motor overload
protection function.
%l2 Inverter overload (OL2)
The electronic thermal relay
actuated the Inverter overload
protection function.
%l3*
Overtorque (OL3)
A current exceeding the value
set with n075 flowed for more
than the time set with n076.
Cause and action
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.
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.
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.
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.
→ 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)
ef5 External error (Terminal S5)
ef6 External error (Terminal S6)
cpf0
Digital Operator
transmission error (CPF0)
The Inverter could not
communicate with the Digital
Operator within 5 s after
power is supplied to the
Inverter.
The Digital Operator is not connected to the Inverter
properly.
→ Reconnect the Digital Operator to the Inverter.
The CPU of the Inverter is broken.
→ Replace the Inverter.