11-22
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
38
Drive prohibition input
error
Occurs during a trial
operation.
• During the trial
operation, both the
Forward Drive
Prohibition (POT) input
and the Reverse Drive
Prohibition (NOT) input
became off.
• Wire correctly.
• Replace the limit
sensor with a new one.
• Confirm that the control
power is input
correctly.
• An operation
command was issued
by the CX-Drive, when
the Drive Prohibition
Input Selection
(Pn504) was set to 0,
and either the Forward
Drive Prohibition (POT)
input or the Reverse
Drive Prohibition
(NOT) input was off.
• Wire correctly.
• Replace the limit
sensor with a new one.
• Confirm that the control
power is input
correctly.
• Move to the position
where both POT and
NOT do not turn off.
Gain an operation
command by the CX-
Drive.
Occurs when the servo is
turned ON.
Or, occurs during
operation.
• When the Drive
Prohibition Input
Selection (Pn504) was
set to 0, both the
Forward Drive
Prohibition (POT) input
and the Reverse Drive
Prohibition (NOT) input
were off
simultaneously.
• Wire correctly.
• Replace the limit
sensor with a new one.
• Confirm that the control
power is input
correctly.
• Confirm that the Pn504
is set correctly.
• When the Drive
Prohibition Input
Selection (Pn504) was
set to 2, either the
Forward Drive
Prohibition (POT) input
or the Reverse Drive
Prohibition (NOT) input
was off.
• Wire correctly.
• Replace the limit
sensor with a new one.
• Confirm that the control
power is input
correctly.
• Confirm that the Pn504
is set correctly.
40
Absolute encoder
system down error
Occurs when the power
supply is turned ON.
Occurs during operation.
• The voltage supplied to
the absolute encoder is
low.
• Set up the absolute
encoder.
• Connect the battery
power supply.
41
Absolute encoder
counter overflow error
Occurs during operation.
• The multi-rotation
counter of the absolute
encoder exceeds the
specified value.
• Properly set the
Operation Switch when
Using Absolute
Encoder (Pn015).
42
Absolute encoder
overspeed error
Occurs when the power
supply is turned ON.
• The motor rotation
speed exceeds the
specified value when
the battery power
supply is turned ON.
• The wiring is incorrect.
• Reduce the motor
rotation speed and
supply power.
• Check the wiring.
43
Encoder initialization
error
Occurs when the power is
turned on.
• The encoder is faulty.
• Replace the
Servomotor.
Alarm
number
Error conditions
Status when error
occurs
Cause
Measures
ABS
ABS
ABS