Omron 3G3RX User Manual page 345

Name Description
Prevents Inverter damage due to
input phase loss when the input
Input open phase loss protection selection is
phase trip enabled (b006=01), and trips.
Trips when the phase loss time is
approximately 1 s or more.
Trips when the gate array cannot
confirm IGBT ON/OFF because of a
Main circuit
main element failure, a load short
error
circuit, or an erroneous operation
*1
resulting from radiated electrical
noise.
Shuts off the Inverter output to
protect the main element when a
momentary overcurrent,
temperature error in the main
IGBT error element, or drop of the main
element driving power supply
occurs.
(Retry operation cannot be
performed for this trip.)
Shuts off the Inverter output when
detecting the thermistor resistance
Thermistor value inside the motor has changed
error which is connected to the TH
terminal, resulting motor
temperature rise.
When 01 is selected in b120 (brake
control selection), this error appears
if the brake ON/OFF cannot be
Brake error confirmed within the b124 set time
(brake confirmation wait time) after
the Inverter outputs the brake
release signal.
Shuts off the hardware output and
Emergen-
displays an error when the EMR
cy shutoff
terminal (S3) is turned on with SW1
*2
on the logic board ON.
If an overload is detected in the
lowest speed range of 0.2 Hz max.,
Overload
an electronic thermal trip inside the
trip in low
Inverter works to shut off the Inverter
speed
output. (2nd electronic thermal)
range
(However, a higher frequency could
remain in the error history.)
Appears when the timeout occurs
ModBus
because of disconnection during
communic
Modbus-RTU communication.
ations error
(Trip by the C076 setting)
*1. The reset command through the RS terminal or STOP/RESET key is not accepted. Turn off the power.
*2. The reset operation via the Digital Operator is not accepted. Be sure to reset via the RS terminal.
5-1 Protective Functions and Troubleshooting
Error Code Check point and remedy
Is there any input power supply phase
loss?
(Check the input wiring.)
E24.0
Is there a contact failure for MCCB and/or
Mg?
(Replace MCCB, Mg.)
Is there any large electrical noise source
around?
(Countermeasures against electrical
noise)
Has the main element/IGBT been
E25.0
damaged?
Is there any output short-circuit?
(Check the IGBT.)
The Inverter has a failure. (Repair/
Replace)
Is there any output short-circuit? (Check
the output wires.)
Is there any ground fault?
(Check the output wires and motor.)
E30.0
Has the main element been damaged?
(Check the IGBT.)
Is there any clogging in the fin?
(Clean the fin.)
Is the motor temperature too high?
(Check the motor temperature.)
Is there any damage to the thermister
inside the motor?
E35.0
(Check the thermistor.)
Is there any electrical noise being
introduced in the thermister signal?
(Separate the wiring.)
Is the brake ON/OFF function working?
(Brake check)
Is the set time for b124 too short?
E36.0 (Increase b124.)
Has the brake confirmation signal been
input?
(Wiring check)
Did any error occur in the external
devices when the emergency shutoff
E37.0
function was selected?
(Correct the external device error.)
Is the load too large? (Reduce the loading
E38.0
factor.)
Is the communication speed correct?
E41.0 Is the wiring distance appropriate?
(Connection check)
Reference
page
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
5
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2-9
4-75
4-76
2-9
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4-147
5-4