Mr-H-Bn Detection Error - Mitsubishi Electric MELSEC-Q QD75M User Manual

15 TROUBLESHOOTING

15.2.2 MR-H-BN detection error

LED
Classifi-
Error indicator
cation of
code of servo
errors
amplifier
2010 10
2012 12
2013 13
2014 14
2015 15
Servo
amplifier
errors
2016 16
2017 17
2019 19
2020 1A
2020 20
2024 24
Error name
Under voltage The power supply voltage to drop.
Memory error 1 ROM or RAM memory error.
Clock error Printed circuit board fault.
Watchdog error CPU parts of the circuit 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.
Memory error 3 Flash memory error.
Servomotor
Servomotor and servo amplifier
combination
combination
error
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 - 34
MELSEC-Q
Cause
The power supply voltage is low.
For MR-H700BN or less:
There was an instantaneous
control power failure of 15ms or
longer.
For MR-H11KBN or less:
There was an instantaneous
control power failure of 10ms 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 200VDC.
(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 is
disconnected.
Fault in the encoder.
Encoder cable fault. (Wire breakage
or shot)
Improper motor was connected with
servo amplifier.
Faulty parts in the servo amplifier.
When using servomotor, improper
motor was connected with servo
amplifier.
The encoder connecter is
disconnected.
Fault in the encoder.
Encoder cable fault. (Wire breakage
or shot)
Power input cable and servomotor
output cable are making contact at
the main circuit terminal block(TE1).
Servomotor power cable insulation
deteriorated.