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MELSEC-Q
15 TROUBLESHOOTING
15.3.2 MR-J3-B detection warning
Classifica
tion of
warnings
Warning
code
LED
display of
the servo
amplifier
Warning name Warning Cause
Battery cable is open.
2102 92
Open battery
cable warning
Absolute position detection
system battery voltage is low.
Battery voltage fell to 2.8VDC or less.
Droop pulses remaining are greater
than the in-position range setting.
2106 96
Home position
setting warning
Home position setting could not
be made.
Creep speed high.
2116 9F Battery warning
Voltage of battery for absolute
position detection system
reduced.
Battery voltage fell to 3.2VDC or less.
2140 E0
Excessive
regenerative load
warning
There is a possibility that
regenerative power may
exceed permissible
regenerative power of built-in
regenerative brake resistor or
regenerative brake option.
Regenerative power increased to 85%
or more of permissible regenerative
power of built-in regenerative brake
resistor or regenerative brake option.
2141 E1
Over load
warning1
There is a possibility that
overload alarm 1 (error code:
2050) or 2 (error code: 2051)
may occur.
Load increased to 85% or more of
over load alarm 1 (error code: 2050)
or 2 (error code: 2051) occurrence
level.
Noise entered the encoder.
2143 E3
Absolute position
counter warning
Absolute position encoder
pulses faulty.
Fault of the encoder.
2144 E4
Parameter
warning
Parameter outside setting
range.
Parameter value set from QD75MH
controller is outside setting range.
2146 E6
Servo forced stop
warning
EM1-SG is open.
Forced stop was made valid.
(EM1-SG was opened.)
Forced stop input signal of the
QD75MH is valid. (EMI (1A8) to
EMI.COM (1B8) in the SSCNET
cable is open.)
Fault of connector in the QD75MH.
2147 E7
Controller forced
stop warning
Forced stop input signal is input
to the QD75MH.
A "watchdog error" will be occurred in
the QD75MH.
Cooling fan life expiration.
Servo
amplifier
warnings
2148 E8
Cooling fan speed
reduction warning
The speed of the servo
amplifier decrease to or below
the warning level.
this warning is not displayed
with MR-J3-70B/100B among
servo amplifiers equipped with
a cooling fan.
The power supply of the cooling fan is
broken.