Mitsubishi Electric A173UHCPU Programming Manual page 343

APPENDICES
Table 2.12 Servo Amplifier Error List (2000 to 2799) (Continued)
Error Amplifier
Code Type
Name
A
Overload
2050
M
Overload 1
M
2051 Overload 2
Error Cause
Description
• The rated current of the servo
motor is exceeded.
• Reduce the load.
• Hunting due to parameter setting
mistake.
• An overload current of about 200%
has been continuously supplied to
the servo amplifier and servomotor.
• The servo amplifier and servomotor
were overloaded at a torque close
to the maximum torque (95% or
more of the current control value).
When Error Checked Error Processing
At any time during operation Immediate stop
APP − 26
Corrective Action
• Load inertia or friction is too large.
• Reconsider the servo parameters.
• Check if there has been a collision at
the machine.
• If the load inertia is very large, either
increase the time constant for
acceleration and deceleration or
reduce the load.
• If hunting occurs, adjust the position
loop gain in the servo parameters.
• Check the connection of U, V, W of the
servo amplifier and servomotor.
• Check for disconnection of the encoder
cable.
• Replace the servomotor.
• Check if there has been a collision at
the machine.
• If the load inertia is very large, either
increase the time constant for
acceleration and deceleration or
reduce the load.
• If hunting occurs, adjust the position
loop gain / position control gain 1, 2,
speed loop gain/ speed control gain 1,
2 in the servo parameters.
• Check the connection of U, V, W of the
servo amplifier and servomotor.
• Check for disconnection of the encoder
cable.
• Replace the servomotor.
• If the voltage of the bus in the servo
amplifier has dropped (charge lamp has
gone out), replace the servo amplifier.