Mitsubishi Electric MELSERVO MR-J2 C Series, Инструкция по эксплуатации

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11 - 4
11. TROUBLESHOOTING
Display Name Definition Cause Action
A.15 Memory error 2 EEP-ROM fault
1. Faulty parts in the servo amplifier
Checking method
Alarm (A.15) occurs if power is
switched on after disconnection
of all cables but the control
circuit power supply cables.
Change the servo amplifier.
2. The number of write times to EEP-
ROM exceeded 100,000.
1. Encode connector (CN2) disconnected. Connect correctly.
2. Encoder fault Change the servo motor.
3. Encoder cable faulty
(wire breakage or short)
Repair or change the cable.
A.16 Encoder error 1 Communication
error occurred
between encoder and
servo amplifier.
4. Wrong combination of servo amplifier
and servo motor
Use correct combination.
A.17 Board error 2 CPU/parts fault
1. Faulty parts in the servo amplifier.
Checking method
Alarm (A.17) occurs if power is
switched on after disconnection
of all cables but the control
circuit power supply cables.
Change the servo amplifier.
The output terminals
U, V, W of the servo
amplifier and the
input terminals U, V,
W of the servo motor
are not connected. 2. The wiring of U, V, W is disconnected
or not connected.
Correctly connect the output
terminals U, V, W of the servo
amplifier and the input
terminals U, V, W of the servo
motor.
A.19 Memory error 3 ROM memory fault Faulty parts in the servo amplifier.
Checking method
Alarm (A.19) occurs if power is
switched on after disconnection
of all cables but the control
circuit power supply cables.
Change the servo amplifier.
1. Encoder connector (CN2) disconnected. Connect correctly.
2. Encoder fault
Change the servo motor.
A.20 Encoder error 2 Communication
error occurred
between encoder and
servo amplifier.
3. Encoder cable faulty
(wire breakage or short)
Repair or change the cable.
1. Power input wires and servo motor
output wires are in contact at main
circuit terminal block (TE1).
Connect correctly.
2. Sheathes of servo motor power cables
deteriorated, resulting in ground fault.
Change the cable.
A.24 Main circuit
error
Ground fault
occurred at the servo
motor outputs (U,V
and W phases) of the
servo amplififer.
3. Main circuit of servo amplifier failed.
Checking method
AL.24 occurs if the servo is
switched on after disconnecting
the U, V, W power cables from
the servo amplifier.
Change the servo amplifier.
1. Reduced voltage of super capacitor in
encoder
After leaving the alarm occurring
for a few minutes, switch power
off, then on again. Always make
home position setting again.
2. Battery voltage low
Absolute position
data in error
3. Battery cable or battery is faulty.
Change battery.
Always make home position
setting again.
A.25 Absolute position
erase
Power was switched
on for the first time
in the absolute
position detection
system.
4. Super capacitor of absolute position
encoder is not charged.
After leaving the alarm occurring
for a few minutes, switch power
off, then on again. Always make
home position setting again.
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