Mitsubishi Electric Q Series Programming Manual page 269

APPENDICES
Error
code
Name
• Wrong setting of system setting
(regenerative brake)
• Built-in regenerative brake resistor or
regenerative brake option is not
connected.
• High-duty operation or continuous
regenerative operation caused the
permissible regenerative power of the
regenerative brake option to be
exceeded.
[Checking method]
Call the servo monitor and check the
regenerative level.
Regenerative
2030
alarm
• Power supply voltage is abnormal.
MR-J3- B: 260VAC or more
MR-J3- B1: More than 135VAC
MR-J3- B4: 535VAC or more
• Built-in regenerative brake resistor or
regenerative brake option faulty.
• Regenerative transistor faulty.
• Command speed is too high. (Motor
speed has exceeded the instantaneous
permissible speed.)
• Small acceleration/deceleration time
constant caused overshoot to be large.
• Servo system is instable to cause
overshoot.
2031 Overspeed
• Electronic gear ratio is high.
• Encoder faulty.
Table 2.3 Servo error (2000 to 2899) list (Continued)
Error cause
Description
[Checking method]
• The regenerative brake option has
overheated abnormally.
• Servo error [2030] occurs even after
removal of the built-in regenerative
brake resistor or regenerative brake
option.
Error check
processing
Any time during Immediate
operation
APP - 24
Error
Corrective action
• Check the regenerative brake of
system setting and set correctly.
• Connect correctly.
• Reduce the frequency of
positioning.
(Call the regenerative level [%] of
servo monitor and reduce the
frequency of
acceleration/deceleration or feed
speed.)
• Use the regenerative brake
option of larger capacity.
• Reduce the load.
• Review the power supply
• Replace the servo amplifier or
regenerative brake option..
• Replace the servo amplifier.
stop
• Check the servo program or
mechanical system program,
and set correctly.
• If an overshoot occurs during
acceleration/deceleration, check
the acceleration/deceleration
time in the fixed parameters.
• Re-set servo gain to proper
value.
• If servo gain cannot be set to
proper value:
1) Reduce load inertia moment
ratio; or
2) Reexamine acceleration/
deceleration time constant.
• Set correctly.(Check if the
number of pulses per revolution
and travel value per revolution
in the fixed parameters match
the machine system.
• Replace the servomotor.