Mitsubishi Electric Q Series Programming Manual page 484

APPENDICES
Error
code
Name
• Servo amplifier failure
• The power supply was turned on and off
continuously by overloaded status.
Main circuit
• Ambient temperature of servo amplifier
2045
device overheat
is over 55[°C] (131[°F]).
• Used beyond the specifications of close
mounting of servo amplifier.
• Ambient temperature of servomotor is
over 40[°C] (104[°F]).
Servomotor • Servomotor is overloaded.
2046
overheat
• Thermal sensor in encoder is faulty.
• Cooling fan life expiration
Cooling fan
• Foreign matter caught in the fan stopped
2047
alarm
rotation.
• The power supply of the cooling fan
failed.
• Servo amplifier is used in excess
of its continuous output current.
• Servo system is instable and hunting.
• Machine struck something.
2050 Overload 1
• Wrong connection of servo motor.
(Servo amplifier's output terminals U, V,
W do not match servo motor's input
terminals U, V, W.)
• Encoder faulty.
[Checking method]
When the servomotor shaft is rotated
with the servo off, the cumulative
feedback pulses do not vary in
proportion to the rotary angle of the shaft
but the indication skips or returns
midway.
Table 1.13 Servo error (2000 to 2899) list (Continued)
Error cause
Description
Error check
processing
Any time during Immediate
operation
APP - 29
Error
Corrective action
• Replace the servo amplifier.
• The drive method is reviewed.
• Review environment so that
ambient temperature is 0 to
55[°C] (32 to 131[°F]).
• Use within the range of
specifications.
• Review environment so that
ambient temperature is 0 to
40[°C] (32 to 104[°F]).
• Reduce load.
• Review operation pattern.
• Use servomotor that provides
larger output.
• Replace the servomotor.
• Replace the cooling fan of the
servo amplifier.
• Remove the foreign matter.
• Replace the servo amplifier.
• Reduce load.
stop
• Review operation pattern.
• Use servomotor that provides
larger output.
• Repeat acceleration/
deceleration to execute auto
tuning.
• Change auto tuning response
setting.
• Set auto tuning to OFF and make
gain adjustment manually.
• Review operation pattern.
• Install limit switches.
• Connect correctly.
• Replace the servomotor.