Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

Page: 171 / 500

8. TROUBLESHOOTING
8 - 32
Warning No. E3 Name: Absolute position counter warning
Stop method: Axes can operate (detected at
the corresponding axis)
Warning description
The multi-revolution counter value of the absolute position encoder exceeds the maximum revolution
range.
Absolute position encoder pulses are faulty.
Display Name Cause Checkpoint Finding Action
E3.1 Absolute
positioning
counter travel
distance excess
warning
(1) The travel distance from
the home position is
32768 rotation or more in
the absolute position
system.
Check the multi-revolution
counter with MR
Configurator. 32768 rotation or
more. Review the operation
range.
Make home position
return.
E3.2 (1) Problem found. Take countermeasure
according to the
cause. Fault is generated from
the surrounding
environment. Check for noise and other
factors.
No problem found. Check (2).
Absolute
positioning
counter warning
(2) Encoder is faulty. Replace the servo motor
and check the
reproducibility of the error. Error is not
reproduced. Replace the servo
motor.
E3.5 (1) Problem found. Take countermeasure
according to the
cause. Fault is generated from
the surrounding
environment. Check for noise and other
factors.
No problem found. Check (2).
Absolute
positioning
counter in
encoder warning
(2) Encoder is faulty. Replace the servo motor
and check the
reproducibility of the error. Error is not
reproduced. Replace the servo
motor.
Warning No. E4 Name: Parameter warning
Stop method: Axes can operate (detected at
the corresponding axis)
Warning description At parameter write, write to parameter outside of the setting range is attempted.
Display Name Cause Checkpoint Finding Action
E4.1 Parameter setting
range error
warning
(1) Parameter value set from
the servo system
controller is outside of the
setting range.
Check the parameter set
from the servo system
controller. Outside of the setting
range. Set a parameter within
the range.
Warning No. E6 Name: Servo forced stop warning Stop method: All axes stop
Warning description Forced stop signal is turned off.
Display Name Cause Checkpoint Finding Action
E6.1 Servo forced stop
warning (1) Forced stop (EM1) is
turned off.
Check the forced stop
(EM1). OFF Ensure safety and
deactivate (turn on).
forced stop (EM1).
ON Check (2).
(2) Not input. Input 24VDC. 24VDC of external power
supply is not input. Check if 24VDC of
external power supply is
input.
Input. Check (3).
(3) Servo amplifier is faulty. Replace the servo
amplifier, and check the
reproducibility of the error. Not reproduced. Use the newly
replaced servo
amplifier.