11 - 9
11. TROUBLESHOOTING
Display
Name
Definition
Cause
Action
1. Battery cable is open.
Repair cable or change battery.
A.92
Open battery
cable warning
Absolute position
detection system battery
voltage is low.
2. Battery voltage dropped to 2.8V or
less.
Change battery.
A.96
Home position
setting warning
1. In incremental system:
Home position return
could not be made.
2. In absolute position
detection system:
Home position setting
could not be made.
Droop pulses remaining are greater
than the in-position range setting.
Remove the cause of droop pulse
occurrence.
A.98
Software limit
warning
Command position
exceeded software limit.
1. Review the operation pattern.
2. Review the software limit
setting.
A.9F
Battery warning
Voltage of battery for
absolute position
detection system reduced.
Battery voltage fell to 3.2V or less.
Change the battery.
A.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.
Checking method
Call the status display and check
regenerative load ratio.
1. Reduce frequency of
positioning.
2. Change regenerative brake
option for the one with larger
capacity
3. Reduce load.
A.E1
Overload warning There is a possibility that
overload alarm 1 or 2
may occur.
Load increased to 85% or more of
overload alarm 1 or 2 occurrence level
Cause, checking method
Refer to A.50,51.
.
Refer to A. 50, A. 51.
1. Noise entered the encoder.
Take noise suppression
measures.
A.E3
Absolute position
counter warning
Absolute position encoder
pulses faulty.
2. Encoder faulty.
Change servo motor.
A.E6
Servo emergency
stop
EMG-SG are open.
External emergency stop was made
valid. (EMG-SG opened.)
Ensure safety and deactivate
emergency stop.
A.E9
Main circuit off
warning
Servo was switched on
with main circuit power
off.
Switch on main circuit power.
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Summary of Contents for MELSERVO MR-J2 C Series
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Page 189: ...8 34 8 COMMUNICATION FUNCTIONS MEMO Downloaded from ManualsNet com search engine ...
Page 201: ...10 2 10 INSPECTION MEMO Downloaded from ManualsNet com search engine ...
Page 211: ...11 10 11 TROUBLESHOOTING MEMO Downloaded from ManualsNet com search engine ...
Page 219: ...12 8 12 SPECIFICATIONS MEMO Downloaded from ManualsNet com search engine ...
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