Mitsubishi A1SD75M3 User Manual page 634

14 TROUBLESHOOTING
Servo
Error
amplifier
code
LED display
2037 37 Parameter error
Servomotor
2046 46
overheat
2050 50 Overload 1
2051 51 Overload 2
Name Definition
Parameter setting error
Servomotor temperature
rise actuated the thermal
protector.
Load exceeded overload
protection characteristic
of servo amplifier.
Load ratio 300%:
2.5s or more
Load ratio 200%:
100s or more
Machine collision or like
caused max. output
current to flow
successively for several
seconds.
Servomotor locked:
1s or more
1. Servo amplifier fault caused the parameter setting to be rewritten.
2. Regenerative brake option not combined with used servo
amplifier was selected in " Pr.102 Regenerative brake resistor".
1. Ambient temperature of servomotor is over 40°C.
2. Servomotor is overloaded.
3. Thermal protector in encoder is faulty.
1. Servo amplifier is used in excess of its continuous output current.
2. Servo system is instable and hunting.
3. Machine struck something.
4. Wrong connection of servomotor.
Servo amplifier's output terminals U, V, W do not match
servomotor's input terminals U, V, W.
5. Encoder faulty.
1. Machine struck something.
2. Wrong connection of servomotor.
Servo amplifier's output terminals U, V, W do not match
servomotor's input terminals U, V, W.
3. Servo system is instable and hunting.
4. Encoder faulty.
14 - 46
MELSEC-A
Occurrence factor