Mr-J2-Jr Detection Error - Mitsubishi Electric MELSEC-Q QD75M User Manual

15 TROUBLESHOOTING

15.2.5 MR-J2-Jr detection error

LED
Classifica
Error indicator
tion of
code of servo
errors
amplifier
2010 10
2011 11
2012 12
2013 13
2015 15
Servo
amplifier
errors
2016 16
2017 17
2020 20
2024 24
Error name
The power supply voltage dropped to
Under voltage
20VDC or less.
Board error 1 Printed circuit board fault.
Memory error 1 ROM or RAM memory error.
Clock error Printed circuit board fault.
Memory error 2 EEP-ROM error
Communication error occurred
Encoder error 1
between encoder and servo amplifier.
Board error 2 CPU or parts of the circuit fault.
Communication error occurred
Encoder error 2
between encoder and servo amplifier.
Motor output Servomotor output (U, V, W phase)
side ground fault ground fault.
Description
15 - 66
MELSEC-Q
Cause
The power supply voltage is low.
There was an instantaneous control
power failure of 40ms or longer.
Shortage of power supply capacity
caused the power supply voltage to
drop at start, etc. .
Power was restored after the bus
voltage had dropped to 15VDC.
(Main circuit power switched on
within 5s after it had switched off.)
Faulty parts in the servo amplifier.
Faulty parts in the servo amplifier.
The encoder connecter (CNP2) is
disconnected.
Fault in the encoder.
Encoder cable fault. (Wire breakage
or shot)
Faulty parts in the servo amplifier.
The encoder connecter (CNP2) is
disconnected.
Fault in the encoder.
Encoder cable fault. (Wire breakage
or shot)
Contact of power supply input
cables and servomotor outputs in
main circuit terminal block.
Sheathes of servomotor power
cables deteriorated, resulting in
ground fault.