Mitsubishi Electric Q172CPU - Page 597

APP - 36
APPENDICES
Table 2.13 Servo error (2000 to 2799) list (Continued)
Error cause Error
code
Name Description
Error check
Error
processing
Corrective action
2050 Overload 1
• An overload current of about 200[%]
continuously supplied to the servo
amplifier or 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/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.
2051 Overload 2
• The servo amplifier or servomotor was
overloaded at a torque close to the
maximum torque (95[%] or more of
the current control value).
• Check if there has been a
collision at the machine.
• If the load inertia is very large,
either increase the time constant
for acceleration/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 turned off),
replace the servo amplifier.
2052
Error
excessive
• The droop pulses of the deviation
counter exceeded the error excessive
alarm level set in the servo
parameters.
Any time during
operation
Immediate
stop
• Check if there has been a
collision at the machine.
• Increase the time constant for
acceleration/deceleration.
• Increase the position loop
gain/position control gain 1, 2, in
the servo parameters.
• 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 turned off),
replace the servo amplifier.