Mitsubishi Electric MELSERVO MR-J4-B-RJ Series, Instruction Manual

Page: 116 / 174

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 109
Alarm No.: EA Name: ABS servo-on warning
Alarm content The servo-on was not enabled within 1 s after ABSM (ABS transfer mode) was turned on.
Detail
No.
Detail name Cause Check method Check result Action Target
EA.1 ABS servo-on
warning
(1) The wiring of I/O signals
is incorrect.
Check if the I/O signal
wire is disconnected or
connected loosely. It has a failure. Repair or replace the
I/O signal wire. [A]
It has no failure. Check (2).
(2) The sequence program
is incorrect.
Check the sequence
program. The sequence
program is incorrect. Modify the sequence
program.
Alarm No.: EB Name: The other axis error warning
Alarm content
An alarm, which stops all axes, such as [AL. 24 Main circuit error] or [AL. 32 Overcurrent] occurred in
other axis.
"All alarms" of "Target alarm selection of the other axis error warning" is selected in [Pr. PF02].
Detail
No.
Detail name Cause Check method Check result Action Target
EB.1 The other axis
error warning
(1) [AL. 24] occurred at
other axis.
Check if [AL. 24] is
occurring at other axis. It is occurring. Eliminate the cause
of [AL. 24] on the
other axis side. [WB]
It did not occur. Check (2).
(2) [AL. 32] occurred at
other axis.
Check if [AL. 32] is
occurring at other axis. It is occurring. Eliminate the cause
of [AL. 32] on the
other axis side.
It did not occur. Check (3).
(3) "All alarms" of "Target
alarm selection of the
other axis error warning"
is selected in [Pr. PF02].
Check the [Pr. PF02]
setting. "All alarms" is
selected. Remove the cause
of the occurring
alarm at other axis.
Alarm No.: EC Name: Overload warning 2
Alarm content Operations over rated output were repeated while the servo motor shaft was not rotated.
Detail
No.
Detail name Cause Check method Check result Action Target
EC.1 Overload
warning 2
(1) The load is too large or
the capacity is not
enough.
Check the effective
load ratio. The effective load
ratio is high. Reduce the load.
Replace the servo
motor with the one
of larger capacity. [A]
[B]
[WB]
[RJ010]
[GF]
Alarm No.: ED Name: Output watt excess warning
Alarm content
The status, in which the output wattage (speed × torque) of the servo motor exceeded the rated output,
continued steadily.
Detail
No.
Detail name Cause Check method Check result Action Target
ED.1 Output watt
excess warning
(1) The status, in which the
output wattage (speed
× torque or thrust) of
the servo motor
exceeded 120% of the
rated output
(continuous thrust),
continued steadily.
Check the servo motor
speed and torque, or
check the motor speed
and thrust. The output wattage
is 120% of rating. Reduce the servo
motor speed.
Reduce the load. [A]
[B]
[WB]
[RJ010]
[GF]