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

Page: 127 / 174

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 120
Description Possible cause Check result Action Target
The servo motor does not
operate. The ABS transfer mode is
selected when the absolute
position detection system is
used. Check if ABSM is on. Turn off ABSM. [A]
The settings of the electronic
gear are incorrect. Check the setting value of
the electronic gear. Set a proper value of the
electronic gear. [A]
[GF]
The setting of point tables is
incorrect. Check the point table setting. Review the point table setting.
The setting of the point table
No. selection is incorrect. Check the setting of the point
table No. selection (RWwn6). Review the setting of the
point table No. selection. [GF]
Wiring or the command pulse
multiplication setting is
incorrect. When using an MR-HDP01
manual pulse generator,
check the wiring and the
command pulse multiplication
setting (assignment of TP0,
TP1 and [Pr. PT03] setting). Review the wiring and the
command pulse
multiplication setting. [A]
Power is not supplied to the
MR-HDP01 manual pulse
generator. A power supply is not
connected b5 V to
12 V and 0 V of MR-HDP01. Connect a power supply
b5 V to 12 V and 0
V of MR-HDP01.
Power is not supplied to OPC
(power input for open-
collector sink interface). Between DICOM and OPC of
the CN1 connector of the
servo amplifier is not
connected. Connect between DICOM
and OPC.
Power is not supplied to OPC
(power input for open-
collector sink interface). Between DICOM and OPC of
the CN1 connector of the
servo amplifier is not
connected. Connect between DICOM
and OPC.
The axis is disabled. Check if the disabling control
axis switch is on.
[B]: SW2-2
[WB]: SW2-2 to 4 Turn off the disabling control
axis switch. [B]
[WB]
An error is occurring on the
servo system controller side. Check if an error is occurring
on the servo system
controller side. Cancel the error of the servo
system controller.
The setting of a parameter is
incorrect on the servo
system controller side. Check the settings of
parameters on the servo
system controller side. Review the setting of the
parameter on the servo
system controller side.
The position command is not
inputted correctly. Check cumulative command
pulses using MR
Configurator2 and check if
numerical values are
changed by inputting the
command. Review the setting of the
servo system controller and
the servo program.
The connection destination
of the encoder cable is
incorrect. Check if the connection
destinations of CN2A, CN2B,
and CN2C are the same as
CNP3A, CNP3B, and
CNP3C. Connect encoder cables
correctly. [WB]
The speed of the servo motor
or linear servo motor is not
increased. Or the speed is
increased too much. The setting of the speed
command, speed limit, or
electronic gear is not correct.
Check the settings of the
speed command, speed limit,
and electronic gear. Review the settings of the
speed command, speed limit,
and electronic gear. [A]
[B]
[WB]
[RJ010]
[GF]
The connection of the servo
motor is incorrect. Check the wiring of U/V/W. Connect it correctly.
The voltage of the main
circuit power supply has
dropped. Check if the voltage of the
main circuit power supply
dropped. Increase the voltage of the
main circuit power supply.
For a servo motor with an
electromagnetic brake, the
brake has not released. Check the power supply of
the electromagnetic brake. Turn on the electromagnetic
brake power.