Mitsubishi Electric MELSERVO-J4 Instruction Manual Trouble Shooting page 79

1. TROUBLESHOOTING
Description
A communication with servo
amplifier fails using MR
Configurator2.
(For details, refer to Help of
MR Configurator2.)
For a servo motor with an
electromagnetic brake, the
brake went out.
The coasting distance of the
servo motor became longer.
Possible cause
They are off-line status.
A communication cable is
malfunctioning.
The communication setting is
incorrect.
A model is being connected
other than the model set in
model selection.
The driver was not set
correctly.
The electromagnetic brake is
failure due to its life. For the
life of electromagnetic brake,
refer to "Servo Motor
Instruction Manual (Vol. 3)".
The load was increased and
permissible load to motor
inertia ratio was exceeded.
An external relay is
malfunctioning. Or the wiring
of MBR (Electromagnetic
brake interlock) is incorrect.
The electromagnetic brake is
failure due to its life. For the
life of electromagnetic brake,
refer to "Servo Motor
Instruction Manual (Vol. 3)".
Check result
Check if they are off-line.
Check if the communication
cable is malfunctioning.
Check the communication
setting such as baud rate
and ports.
Check if the model selection
is set correctly.
Check the bottom of the USB
(Universal Serial Bus)
controller with the device
manager of the personal
computer if "MITSUBISHI
MELSERVO USB Controller"
is being displayed.
Remove the servo motor and
all wirings from the machine
and check if the servo motor
shaft can be rotated by
hands.
(If it is rotated by hands, the
brake is failure.)
Check if the load was
increased.
Check the external relay and
wirings connected to MBR
(Electromagnetic brake
interlock) if they are
malfunctioning.
Remove the servo motor and
all wirings from the machine
and check if the servo motor
shaft can be rotated by
hands.
(If it is rotated by hands, the
brake is failure.)
1 - 72
Action
Set them to on-line.
Replace the communication
cable.
Set the communication
setting correctly.
Set the mode selection
correctly.
Delete an unknown device or
other devices, cycle the
power of the servo amplifier,
and reset according to Found
New Hardware Wizard.
Replace the servo motor.
Reduce the load.
Replace the external relay.
Or review the wiring.
Replace the servo motor.
Target
[A]
[B]
[WB]
[RJ010]
[A]
[B]
[WB]
[RJ010]
[A]
[B]
[WB]
[RJ010]