14 - 60
MELSEC-A
14 TROUBLESHOOTING
Error
code
Servo
amplifier
LED display
Name Definition Occurrence factor
1. SSCNET cable is disconnected.
2. SSCNET cable fault (open cable or short circuit).
3. Noise entered the SSCNET cable.
4. The terminal connector is disconnected.
2034 34 CRC error
SSCNET cable
communication error
5. The same No. exists in the servo amplifier side axis setting.
1. Command of higher than servomotor maximum speed was given.
2. Noise entered the SSCNET cable.
2035 35
Command pulse
frequency alarm
Input command pulse is
too high.
3. AD75 faulty
1. SSCNET cable is disconnected.
2. SSCNET cable fault.
3. Printed board faulty
2036 36 Transfer error SSCNET cable fault
4. The terminal connector is disconnected.
1. Servo amplifier fault caused the parameter setting to be rewritten.
2037 37 Parameter error Parameter setting error
2. There is parameter set to outside setting range by AD75.
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.
2050 50 Overload 1
Load exceeded overload
protection characteristic
of servo amplifier.
Load ratio 200%:
85s or more
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.
2051 51 Overload 2
Machine collision or like
caused max. output
current to flow
successively for several
seconds.
Servomotor locked:
1s or more
4. Encoder faulty.
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