Errors Detected By Mr-H-B (Mr-H-Bn) - Mitsubishi A1SD75M3 User Manual

14 TROUBLESHOOTING

14.2.2 Errors detected by MR-H-B (MR-H-BN)

Servo
Error
amplifier
code
LED display
2010 10 Undervoltage
2012 12 Memory error 1
2013 13 Clock error
2014 14 Watchdog
2015 15 Memory error 2
2016 16 Encoder error 1
2017 17 Board error
2019 19 Memory error 3
Motor
2020 1A combination
error
2020 20 Encoder error 2
2024 24 Ground fault
Absolute
2025 25
position erase
Name Definition
Power supply voltage
dropped.
160VAC or less
RAM, ROM memory
fault
Printed board fault
CPU part fault
2
E PROM fault
Communication error
occurred between
encoder and servo
amplifier.
CPU/parts fault
Flash memory fault
Motor combination error
Communication error
occurred between
encoder and servo
amplifier.
Ground fault occurred at
the servomotor outputs
(U, V and W phases) of
the servo amplifier.
Absolute position data in
error
1. Power supply voltage is low.
2. Power failed instantaneously.
In case of MR-H700BN or less: 15ms or more
In case of MR-H11KBN or less: 10ms or more
3. Shortage of power supply capacity caused the power supply
voltage to drop at start, etc.
4. Power switched ON within 5s after it had switched OFF.
5. Faulty parts in the servo amplifier.
Faulty parts in the servo amplifier.
1. Encoder connector disconnected.
2. Servomotor encoder faulty.
3. Encoder cable faulty (open cable or short circuit)
Faulty parts in the servo amplifier
When using HC-MF, HA-FF, HC-SF or HC-UF series servomotor,
improper motor was connected with servo amplifier.
1. Encoder connector disconnected.
2. Encoder cable faulty (open cable or short circuit)
1. Power input cable and servomotor output cable are making
contact at the main circuit terminal block (TE1).
2. Servomotor power cable insulation deteriorated.
1. Reduced voltage of super capacitor in encoder
2. Battery voltage low
3. Battery cable or battery is faulty.
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MELSEC-A
Occurrence factor