Absolute Position Counter Warning; Parameter Warning - Mitsubishi Electric MELSERVO-JE Instruction Manual

1. SERVO AMPLIFIER TROUBLESHOOTING
Alarm No.: E3 Name: Absolute position counter warning
Alarm content
Detail
Detail name
No.
E3.1 Multi-revolution (1) The travel distance
counter travel
distance
excess warning
E3.2 Absolute (1) Something near the
position
counter
warning
(2) An encoder is
E3.4 Absolute (1) A home position was
positioning
counter EEP-
ROM writing
frequency
warning
E3.5 Encoder Check it with the check method for [AL. E3.2].
absolute
positioning
counter
warning
Alarm No.: E4 Name: Parameter warning
Alarm content
Detail
Detail name
No.
E4.1 Parameter (1) A parameter was set
setting range
error warning
The multi-revolution counter value of the absolute position encoder exceeded the maximum range.
Absolute position encoder pulses are faulty.
An update cycle is short for writing the multi-revolution counter value of the absolute position encoder to
EEP-ROM.
Cause
Check the value of
from the home position the multi-revolution
is 32768 rev or more in counter.
the absolute position
system.
Check the noise,
device caused it. ambient temperature,
etc.
Replace the servo
malfunctioning. motor, and then check
the repeatability.
Check if the operation
renewed (EEP-ROM was within the
write) twice or more in following conditions
10 minutes in the servo between the number
amplifier due to rotation of gear teeth on
to the same direction in
machine side ([Pr.
short time in the point PA06] CMX) and
table method of the servo motor speed
positioning mode or (N).
degree setting with the
program method.
A parameter value out of the setting range was about to be written during parameter writing.
Cause
Check the parameter
out of range with the setting value set with
servo system the servo system
controller. controller.
Check method Check result
It is 32768 rev or
more.
It has a failure.
It has no failure.
It is not repeatable.
The operation was
out of conditions.
When CMX ≤ 2000,
N < 3076.7 r/min
When CMX > 2000,
N < 3276.7 - (CMX
× 0.1) r/min
When (CMX/CDV)
is reduced to its
lowest terms, CMX
≤ 15900
Check method Check result
It is out of setting
range.
1 - 51
Action Target
Review operation [C]
range. Execute the
home position return
again. After the
power is surely
cycled, perform
home position return
again.
Take [B]
countermeasures [C]
against its cause.
Check (2).
Replace the servo
motor.
Set the command [A]
speed within the [C]
conditions.
Set the number of
gear teeth on
machine side within
the conditions.
After the power is
surely cycled,
perform home
position return
again.
Action Target
Set it within the [B]
range.