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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
Servo Drive
error
The inverter shuts off its output to
protect the main element if a
momentary overcurrent, temperature
error in the main element, or drop in
the main element driving power
supply occurs.
Retry operation cannot be performed
after this trip.
E30.
Is there any output short-circuit? (Check the
output wires.)
Is there any ground fault? (Check the output
wires and the motor.)
Is the main element damaged?
(Check the Servo Drive.)
Is there any clogging in the fin?
(Clean the fin.)
Thermistor
error
The inverter shuts off its output if it
detects an abnormal motor
temperature rise from the thermistor
resistance value inside the motor
connected to the terminal TH.
E35.
Is the motor temperature too high?
(Check the motor temperature.)
Is there any damage to the thermistor inside
the motor? (Check the thermistor.)
Is there any noise in the thermistor signal?
(Separate the wiring.)
Brake error
This alarm appears when the Brake
Control Function Selection (b120) is
set to 01 (Enabled), if the inverter
cannot recognize the brake ON/OFF
status within the Brake Error
Detection Time (b124) after it outputs
the brake release signal.
E36.
Is the brake ON/OFF function working?
(Check the brake.)
Is the time set in b124 too short?
(Increase the b124 value.)
Is the brake confirmation signal input?
(Check the wiring.)
Emergency
shutoff
*2
The inverter shuts off the hardware
output and displays an alarm if the
terminal EMR (S3) turns ON with
SW1 on the logic board ON.
E37.
Is there any error in the external equipment
when the emergency shutoff function is
selected?
(Correct the external equipment error.)
Overload
protection in
low speed
range
The inverter shuts off its output if the
inverter built-in electronic thermal
function detects an overload in the
lowest speed range of 0.2 Hz
maximum (2nd Electronic Thermal
Level).
(However, a higher frequency may
remain displayed in the Fault
Monitor.)
E38.
Is the load too heavy? (Reduce the load
rate.)
Modbus
communication
(Modbus error)
This alarm appears if the timeout
occurs due to disconnection during
Modbus communication.
E41.
Is the communication speed correct?
Is the wiring distance appropriate? (Check
the connection.)
*1. 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.
*2. If this occurs, the inverter will not accept the reset operation via the Digital Operator. Be sure to reset it via the
terminal RS.
Name Description
Alarm
code on
Digital
Operator
Check and remedy
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