1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 118
Description
Possible cause
Check result
Action
Target
The display shows "b##".
(Note)
Test operation mode has
been enabled.
Test operation setting switch
is turned on.
Turn off the test operation
setting switch.
[B]
[WB]
[RJ010]
[GF]
The system has been in the
ready-off state.
Check if the servo ready
state is off with the servo
system controller.
Turn on the servo-on signals
for all axes.
The display shows "dEF".
Initializing point table/program
is in progress.
Initializing of point table/
program was set in the
parameter ([Pr. PT34] = 5001)
and the power was cycled.
It takes about 20 s for startup
the servo amplifier at
initializing. Please wait until
the display changes.
[A]
The display shows "off".
Operation mode for
manufacturer setting is
enabled.
Check if all of the control axis
setting switches (SW2) are
on.
Set the control axis setting
switches (SW2) correctly.
[B]
[WB]
[RJ010]
[GF]
The display turned off.
The external I/O terminal
was shorted.
When the display is on by
disconnecting the following
connectors, check if the
disconnected cable wire is
shorted.
[A]: CN1, CN2, CN3
[B] [WB] [RJ010] [GF]: CN2,
CN3
Review the wiring of I/O
signals.
[A]
[B]
[WB]
[RJ010]
[GF]
The control circuit power
supply is not applied.
Check if the control circuit
power supply of the servo
amplifier is off.
Turn on the control circuit
power.
The voltage of the control
circuit power supply has
dropped.
Check if the voltage of the
control circuit power supply
dropped.
Increase the voltage of the
control circuit power supply.
The servo motor does not
operate.
The connection of the servo
motor is incorrect.
Check the wiring of U/V/W.
Connect it correctly.
[A]
[B]
[WB]
[RJ010]
[GF]
The servo motor power
supply cable was connected
to a servo amplifier of other
axis.
Check if the encoder cable
and servo motor power
supply cable are connected
to the same servo amplifier.
Connect the encoder cable
and servo motor power
supply cable correctly.
An alarm or warning is
occurring.
Check if an alarm or warning
is occurring.
Check the content of the
alarm/warning and remove
its cause.
The system has been in the
test operation mode.
[A]: Check if the lower right
point is flickering.
[B] [WB] [RJ010] [GF]: Check
if the test operation setting
switch is on (up).
Cancel the test operation
mode.
The motor-less operation has
been enabled.
[A]: Check the [Pr. PC60]
setting.
[B] [WB] [RJ010] [GF]: Check
the [Pr. PC05] setting.
Disable the motor-less
operation.
The torque is insufficient due
to large load.
Check instantaneous torque
using status display (only [A])
or MR Configurator2 if the
load exceeds the maximum
torque or torque limit value.
Reduce the load or use a
larger capacity servo motor.
An unintended torque limit
has been enabled.
Check if the torque limit is
enabled.
Cancel the torque limit.
Note. ## indicates axis No.
Содержание MELSERVO MR-J4-B-RJ Series
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