Omron RX2 Series User Manual page 766

12 Troubleshooting
E012 External Trip Error
When the inverter accepted a signal commanded by an external device or equipment, the inverter turns
OFF its output. (When external trip function is selected.)
Occurrence
Error occurred unin-
tentionally.
E013 USP Error
This error occurs if an operation command has been input to the inverter when the power supply is
turned ON. Operation command detection is carried out for 1 second after the power supply is turned
ON. (When USP function is selected.)
Occurrence
Error occurred unin-
tentionally.
E014 Ground Fault Error
This is a function to protect the inverter by the detection of ground faults between the inverter output
and the motor at power-on.
The function doesn't work when there is a voltage induced in the motor due to idling or when the
inverter trips.
When the control circuit power (R0, T0, or 24 V power supply) has been turned ON prior to the main cir-
cuit power R, S, or T, the function is activated at the time the main circuit power is turned ON.
Setting the ground fault detection selection [bb-64] to 00 disables the ground fault function. Setting it to
01 enables the function.
Occurrence
Error occurred as
the power supply
was turned ON.
12 - 12
Estimated cause(s)
• You need to check the state of operations related to external
• Terminal logics are
reversed.
• Wiring is wrong.
• A/b contact of terminal can be changed by inverter setting.
Estimated cause(s)
Re-examination of the sequence to enter operation command
Operation command was
is required. You need to wait for 2 seconds or longer to enter
entered too early.
operation command after turning ON the power supply.
Operation command isn't You need to release an operation command when turning ON
released. the power supply.
When USP is enabled, commands of the operator keypad and
You tried to operate with
communication commands are treated as errors. You need to
commands other than
wait for 2 seconds or longer to enter operation command after
terminal commands.
turning ON the power supply.
Estimated cause(s)
• Turn OFF the power, remove the wires connected to the
• Ground faults of wires
or the motor
• Motor insulation deteri- • Turning ON the power supply in a ground fault state results
oration
High-function General-purpose Inverter RX2 Series User's Manual
Exemplar measures to be taken
devices or external equipment, and re-examine the assign-
ment of external trip terminal to the inverter input terminal,
the setting of a/b contact, the external trip command via
communication, etc.
Exemplar measures to be taken
Exemplar measures to be taken
motor, and then check the motor and the wires. A ground
fault may have been occurred.
in a failure. Do not turn ON the power when you check the
motor and motor wires.