7-1 Error Display and Remedial Actions
Error Code List
Name
Overcurrent protection
Overload protection
Braking resistor overload protection
*1
Overvoltage protection
Description
Error code
If the motor is restrained or rapidly accelerated or decelerated, a large current will flow through the Inverter, which will result in breakage.
Accordingly, the protection circuit operates at approximately 200% of the
Inverter rated output current and a trip occurs.
Constant speed
During deceleration
E01.
E02.
occurs.
the b090 set value.
Acceleration E03.
Others
The Inverter output current is monitored and if a motor overload is detected by the built-in electronic thermal, a trip
A trip will occur if the usage rate of regenerative braking circuit exceeds
Extremely high DC voltage between P/
+2 and N/ − may result in failure.Accordingly, a trip will occur if the DC voltage between P/+2 and N/ − reaches approx. 400 VDC (200V class) or 800 VDC (400V class) or above due to increase in the regenerative energy from the motor or in the incoming voltage.
E04.
E05.
E06.
E07.
Check point and remedy
Reference page
Is there any rapid load fluctuation?
→Eliminate load fluctuation.
Is there any output short-circuit?
→Check the output wiring.
Is there any ground fault?
→Check the output wiring and motor.
Is there any rapid deceleration?
→Increase the deceleration time.
−
Is there any rapid acceleration?
→Increase the acceleration time.
Has the motor been locked?
→Check the motor and wiring.
Is the torque boost too high?
→Lower the torque boost.
Is the DC injection braking too high?
→Decrease the braking force.
Is the load too large?
→Decrease the load rate.
Is the thermal level correct?
→Adjust the thermal level to an appropriate level.
5-24
5-66
5-135
5-110
Is there any rapid deceleration?
→Increase the deceleration time.
Is the operation cycle too short?
→Increase the operation cycle.
Is there any rapid deceleration?
→Increase the deceleration time.
Is there any ground fault?
→Check the output wiring and motor.
Has the motor been rotated from the load side?
→Reduce regenerative energy.
Has incoming voltage increased?
→Lower the incoming voltage, sustain the power supply fluctuation, apply the AC reactor to input.
5-24
5-141
−
*1. The reset command will not be accepted until approximately 10 seconds pass since the trip occurs
(protection function works).
7
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
7-2
7
7-1 Error Display and Remedial Actions
Name
Current detector error
CPU error
*1
Description
EEPROM error
*1
A trip will occur if the built-in EEPROM generates an error due to external noise, abnormal rise in temperature, etc. (It may become a CPU error depending on the case).
E08.
Undervoltage The output is shut off if the incoming voltage drops to the specified value or below, because the control circuit no longer functions properly if the incoming voltage to the Inverter drops.
A trip will also occur when the DC voltage between P/+2 and N/
− drops to approx. 173 VDC (200V class) or 345
VDC (400V class) or below.
A trip will occur if the current detector generates an error.
A trip will occur if the built-in CPU experiences a malfunction or error.
Error code
E09.
E10.
E11.
Check point and remedy
Reference page
Is there any large noise source around?
→Countermeasures against noise
Has the cooling efficiency been reduced?
→Check that there is no clogging in the cooling fan and clean it.
→Replace the cooling fan.
Has the power supply voltage decreased?
→Check the power supply.
Is the power supply capacity insufficient?
→Check the power supply.
Has the thyristor been broken?
→Check the thyristor.
The Inverter has a failure.
→Repair
Is there any large noise source around?
→Countermeasures against noise
The Inverter has a failure.
→Repair
Faulty external equipment
→Check the external equipment
Is the power turned on while a RUN signal is still input?
→Check the RUN signal.
−
5-72
−
−
5-120
5-105
External trip
USP error
Grounding protection
*1
A trip will occur if the multi-function input terminal set for External trip (12:
EXT) turns ON.
E12.
A trip will occur if the power is turned on while a RUN signal is still input to the
Inverter. (Available only when the USP function is selected).
E13.
A trip will occur if a ground fault between the Inverter output unit and the motor is detected when turning on the power. (This function does not work when there is residual voltage in the motor).
E14.
Is there any ground fault?
→Check the output wiring and motor.
Is there any error in the
Inverter itself?
→Disconnect the output wires to check.
Is there any error in the main circuit?
→Check the main circuit.
(Refer to Chapter 8,
"Inspection and
Maintenance").
−
*1. If an error occurs, the reset operation using the RS terminal or STOP/RESET key is not accepted. Turn off the power once.
If an error is issued when the power is turned on again, the memory may be faulty or parameters may not be stored correctly. Perform parameter initialization and set the parameters again.
7-3
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
7-1 Error Display and Remedial Actions
Name Description
Error code
Check point and remedy
Reference page
Incoming overvoltage protection
A trip will occur if the incoming voltage remains in an overvoltage state for 100 s while the Inverter is stopped. The overvoltage detection value is approx.
390 VDC for 200V class models, or 780
VDC for 400V class models, based on the DC voltage between P/+2 and N/ −.
E15.
Is the incoming voltage too high?
→Decrease the incoming voltage.
→Suppress the power supply fluctuation.
→Apply the AC reactor to input.
−
Abnormal temperature
CPU communication error
Main circuit error
Driver error
Thermistor error
*1
A trip will occur if the temperature of the main circuit exceeds the specified value due to a high ambient temperature, etc.
A trip will occur if the built-in CPU experiences a communication malfunction or error.
A trip will occur if the main circuit board generates an error.
A trip will occur upon occurrence of momentary overcurrent, abnormal main element temperature or drop in main element drive power, in order to protect the main element. (Operation cannot be restarted following this trip).
A trip will occur upon detection of abnormal temperature based on the resistance of the external thermistor, if the thermistor input function is enabled.
E21.
E22.
E25.
E30.
E35.
Is the installation direction vertical?
→Check the installation.
Is the ambient temperature high?
→Lower the temperature.
Is there any large noise source around?
→Countermeasures against noise
Faulty inverter
→Repair
Is there any large noise source around?
→Countermeasures against noise
Faulty inverter
→Repair
Is there any output shortcircuit?
→Check the output wiring.
Is there any ground fault?
→Check the output wiring and motor.
Has the main element been damaged?
→Check the IGBT.
Is there any clogging in the fan?
→Clean the fins.
Is the motor temperature too high?
→Check the temperature.
Is the thermistor damaged?
→Check the thermistor.
Is there any noise interfusion in the thermistor signal?
→Separate the wiring.
−
−
−
−
5-120
*1. If an error occurs, the reset operation using the RS terminal or STOP/RESET key is not accepted.
Turn off the power once.
If an error is issued when the power is turned on again, the memory may be faulty or parameters may not be stored correctly. Perform parameter initialization and set the parameters again.
7
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
7-4
7
7-1 Error Display and Remedial Actions
7-5
Name
Brake error
Description
Error code
A trip will occur if brake ON/OFF cannot be confirmed within the Brake
Confirmation Wait Time (b124) after the
Inverter has issued a brake release output, provided that the Brake Control function is enabled (b120 = 01).
E36.
Check point and remedy
Reference page
Is the brake ON/OFF function working?
→Check the brake.
Is the set time for b124 too short?
→Increase b124 .
Has the brake confirmation signal been input?
→Check the wiring.
−
5-142
−
Emergency shutoff
*1
E37.
Overload protection in a low speed range
If an overload occurs in the extremely low speed range of 0.2 Hz or below, it will be detected by the built-in electronic thermal of the Inverter and a trip will occur. (However, the error history may indicate a high frequency).
E38.
Is the load too large?
→Decrease the load rate.
−
Poor Digital
Operator connection
A trip will occur upon error in the communication with, or disconnection of, the external Digital Operator or LCD
Operator.
E40.
Is there any communication error?
→Check/replace the cable.
(Note that if b165 is set to "02," this error will not be detected).
Modbus communication
(Modbus-RTU) error
A trip will occur upon timeout if the communication error selection is set to tripping (C076 = 00).
Internal data error
−
E41.
E43.
to
E45.
−
Is the communication speed correct?
→Check the setting.
Is the wiring distance appropriate?
→Check the communication wiring.
Has disconnection occurred?
→Check the wiring.
Encoder disconnection
A trip will occur upon detection of encoder disconnection or poor connection.
E50.
to
E69.
−
E80.
−
−
Excess speed A trip will occur if the motor rotation speed exceeds the "maximum frequency
× Overspeed Error Detection
Level (P026)" or above.
E81.
Positioning error
A trip will occur if the current position deviation against the position reference value exceeds 1,000,000 pulses during simple position control.
E82.
−
E83.
−
Position control range trip
A trip will occur if the current position exceeds the Position Range Setting
(P072, P073) during simple position control.
−
6-3
−
−
−
−
−
−
*1. It cannot be reset with STOP/RESET keys. Perform a reset by reconnecting the power or operating the RS (reset) terminal.
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
