Omron RX Series - Page 579

10 - 5
10 Troubleshooting
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
10-1 Alarm Codes and
Remedies
10
10-1-2 Alarm Code List
Name Description
Alarm
code on
Digital
Operator
Check and remedy
Undervoltage
The inverter shuts off its output if the
incoming voltage drops below the specified
level and the control circuit fails to work
properly.
The inverter trips when the DC voltage
between P and N decreases to
approximately 175 VDC for 200-V class,
and 345 VDC for 400-V class.
E09.
Is the power supply voltage decreased?
(Check the power supply.)
Is the power supply capacity sufficient?
(Check the power supply.)
Is the thyristor broken?
(Check the thyristor.)
Current
detector
error
The inverter shuts off its output if an error
occurs in the current detector (CT) built into
the inverter. The inverter trips if the CT
output is approximately 0.6 V or more when
the power is turned on.
E10. The inverter has a defect. (Repair it.)
CPU error
*1
The inverter shuts off its output and
displays an alarm if a malfunction or error
occurs in the internal CPU.
*2
E11.
Is there any large noise source around?
(Take measures against noise.)
The inverter has a defect. (Repair it.)
External trip
If an error occurs in the external equipment
or device, the inverter captures the signal
from that equipment or device and shuts of
its output.
(This alarm is enabled when the external
trip function is selected.)
E12.
Is there any error in the external
equipment when the external trip
function is selected?
(Reset the external equipment error.)
USP error
This alarm appears when the power supply
is turned on with the RUN signal input into
the inverter.
(This alarm is enabled when the USP
function is selected.)
E13.
When the USP function was selected,
did you turn on the power supply with the
RUN signal input into the inverter?
(Cancel the RUN command and turn on
the power supply again.)
Ground
protection
*3
This protects the inverter if a ground fault is
detected between the inverter output unit
and the motor when the power supply is
turned on.
This function does not work when a residual
voltage remains in the motor.
E14.
Is there any ground fault? (Check the
output wires and the motor.)
Is there any fault in the inverter itself?
(Disconnect the output wires to check it.)
Is there any fault in the main circuit?
(Check and repair the main circuit.)
*4
Incoming
overvoltage
protection
This alarm appears if the incoming voltage
continues to be higher than the
specification value for 100 seconds while
the inverter is stopped.
The inverter trips when the main circuit DC
voltage reaches approximately 390 VDC for
200-V class, and 780 VDC for 400-V class.
E15.
Is the incoming voltage high when the
inverter is stopped?
(Lower the incoming voltage; suppress
the power supply fluctuation; install the
AC reactor in the input power circuit.)