Omron RX Series User Manual page 578

10 Troubleshooting
Name
This function monitors the inverter output
current and, if the built-in electronic thermal
function detects a motor overload, causes
Overload
the inverter to shut off the output and
*1
protection
display an alarm .
The inverter trips depending on the
electronic thermal function settings.
Braking This function causes the inverter to shut off
resistor its output and display an alarm if the usage
overload rate of the regenerative braking circuit
protection exceeds the value set in b090.
Extremely high DC voltage between P/+2
and N/– may result in a fault.
This function therefore causes the inverter
to shut off its output and display an alarm if
the DC voltage between P/+2 and N/–
exceeds the specified level due to
Overvoltage
regenerative energy from the motor or an
protection
increase in the incoming voltage during
operation.
The inverter trips when the DC voltage
between P/+2 and N/– reaches
approximately 400 VDC for 200-V class,
and 800 VDC for 400-V class.
The inverter shuts off the output and
EEPROM displays an alarm if an error occurs in the
*4 *5 built-in EEPROM due to external noise or
error
abnormal temperature rise.
*1. The inverter will not accept the reset command until approximately 10 seconds after the occurrence of a trip
(specifically, after activation of the protection function).
*2. The electronic thermal function is likely to work at 5 Hz or lower. Therefore, if the load inertial moment is large,
the overload protect function will be activated during acceleration to prevent the inverter from accelerating
further. In this case, increase the torque boost or take other measures for adjustment.
*3. Pay attention to the allowable power of the resistor.
*4. The reset operation is not accepted if an EEPROM error occurs. Turn off the power supply once. If E08 is
displayed when turning on the power supply again, it is possible that the memory element is broken or the
parameters are not stored correctly. Perform user initialization to reset the parameter settings.
*5. If this occurs, the inverter will not accept the reset operation via the terminal RS or the STOP/RESET key. Turn
off the power supply once.
*6. This may result in a CPU error.
10 - 4
Description
*6
High-function General-purpose Inverter 3G3RX-V1 User's Manual (I578-E1)
Alarm
code on
Check and remedy
Digital
Operator
Is the load too heavy? (Reduce the load
rate.)
Is the thermal level correct?
E05.
(Adjust the thermal level to an
appropriate level.)
Is there any rapid deceleration?
(Increase the deceleration time.)
Is the operation cycle frequent?
(Increase the operation cycle time.)
E06.
Is the usage rate setting of the
regenerative braking function too low?
(Set it to an appropriate level.)
Is there any rapid deceleration?
(Increase the deceleration time.)
Is there any ground fault? (Check the
E07. output wires and the motor.)
Is the motor rotated from the load side?
(Reduce the amount of regenerative
energy.)
Is there any large noise source around?
(Take measures against noise.)
E08.
Is the cooling efficiency reduced?
(Check the fin for clogging and clean it.)
(Replace the cooling fan.)
*2
*3