15. MR-J3W-0303BN6 SERVO AMPLIFIER
15 - 47
Alarm No.: 31
Name: Overspeed
Stop system: Each axis
Alarm content
The servo motor seed has exceeded the permissible instantaneous speed.
Display
Detail name
Cause
Check method
Check result
Action
The command was
over the permissible
speed.
Check operation pattern.
1) The command from the
controller is excessive.
Check if the command
from the controller is
over the permissible
speed.
The command was
below the
permissible speed.
Check 2).
It is the maximum
torque.
Increase the
acceleration/deceleration
time constant. Or reduce
the load.
2) The servo motor was
driven with maximum
torque and the speed
overshot.
Check if the torque at
acceleration is the
maximum torque.
It is lower than the
maximum torque.
Check 3).
It is oscillating.
Adjust the servo gain with
the auto tuning. Or reduce
the load.
Check the applied voltage
of the main circuit is
48VDC when 24VDC is set
for the main circuit power
supply.
Increase the acceleration
time constant.
3) The servo system is
unstable and oscillating.
Check if the servo
motor is oscillating.
It is not oscillating.
Check 4).
It is overshooting.
Increase the
acceleration/deceleration
time constant.
4) The velocity waveform has
overshot.
Check if it is
overshooting because
the acceleration time
constant is short.
It is not
overshooting.
Check 5).
The bus voltage
dropped.
Check the power supply
capacity of the 24VDC
main circuit power supply.
Increase the voltage of the
24VDC main circuit power
supply within the
permissible range.
Change the voltage of the
main circuit power to
48VDC.
Check operation pattern.
5) The speed overshot when
the voltage was recovered
from a temporary bus
voltage drop during driving.
Check if a temporary
bus voltage drop occurs
during driving.
Bus voltage did not
drop.
Check 6).
31.1 Abnormal
motor
speed
6) Encoder failure
Check if the alarm is
occurring when the
actual speed of the
servo motor is
permissible
instantaneous speed or
lower.
It is lower.
Replace the servo motor.
Summary of Contents for MELSERVO-J3W Series
Page 17: ...8 MEMO ...
Page 27: ...1 FUNCTIONS AND CONFIGURATION 1 10 MEMO ...
Page 87: ...4 STARTUP 4 14 MEMO ...
Page 117: ...5 PARAMETERS 5 30 MEMO ...
Page 129: ...6 GENERAL GAIN ADJUSTMENT 6 12 MEMO ...
Page 185: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 241: ...11 OPTIONS AND AUXILIARY EQUIPMENT 11 56 MEMO ...
Page 274: ...13 USING A LINEAR SERVO MOTOR 13 25 1 2 3 4 ...
