Mr-J3-B Detection Error - Mitsubishi Electric QD75MH1 User Manual

15 TROUBLESHOOTING

15.2.2 MR-J3-B detection error

There is an error that the same code is used. Confirm the error for details by the
indication of the servo amplifier.
LED
Classifica
Error indicator
tion of
code of servo
errors
amplifier
2010 10
2012 12
2013 13
Servo
amplifier
errors
2014 14
2015 15
2016 16
2017 17
2019 19
Error name
• For MR-J3- B:
The power supply voltage dropped
to 160VAC or less.
Under voltage
• For MR-J3- B1:
The power supply voltage dropped
to 83VAC or less.
Memory error 1
RAM memory error.
(RAM)
Printed circuit board fault.
Clock error
Clock error transmitted from the
QD75MH.
CPU watch dog
Printed circuit board fault.
error
Memory error 2
EEP-ROM error
(EEP-ROM)
Encoder error 1 Communication error occurred
(At power on) between encoder and servo amplifier.
Board error CPU or parts of the circuit fault.
Memory error 3
ROM memory error.
(Flash-ROM)
Description
15 - 36
MELSEC-Q
Cause
The power supply voltage is low.
There was an instantaneous control
power failure of 60ms or longer.
Shortage of power supply capacity
caused the power supply voltage to
drop at start, etc. .
The bus voltage had dropped to the
following value or less.
MR-J3- B : 200VDC
MR-J3- B1: 158VDC
Faulty parts in the servo amplifier.
Faulty parts in the servo amplifier.
Faulty parts in the servo amplifier.
Faulty QD75MH.
Faulty parts in the servo amplifier.
Faulty parts in the servo amplifier.
The number of write times to EEP-
ROM exceeded 100,000.
The encoder connecter (CN2) is
disconnected.
Fault in the encoder.
Encoder cable fault. (Wire breakage
or shot)
Encoder cable type (2-wire, 4-wire)
selection was wrong in parameter
setting.
Faulty parts in the servo amplifier.