Filter
Top Products
10 - 11
10. TROUBLESHOOTING
10.2.3 Remedies for warnings
CAUTION
If an absolute position counter warning (AE3) occurred, always make home
position setting again. Not doing so may cause unexpected operation.
POINT
When any of the following alarms has occurred, do not resume operation by
switching power of the servo amplifier OFF/ON repeatedly. The servo amplifier
and servo motor may become faulty. If the power of the servo amplifier is
switched OFF/ON during the alarms, allow more than 30 minutes for cooling
before resuming operation.
Excessive regenerative warning (AE0)
Overload warning 1 (AE1)
If AE6 occur, the servo off status is established. If any other warning occurs, operation can be continued but an
alarm may take place or proper operation may not be performed.
Remove the cause of warning according to this section. Use the optional MR Configurator to refer to a factor of
warning occurrence.
Display Name Definition Cause Action
A90 Home position
return incomplete
In incremental system
Positioning operation
was performed
without home
position return.
1. Positioning operation was performed
without home position return.
Perform home position return.
Home position return
ended abnormally.
2. Home position return speed could not be
decreased to creep speed.
3. Limit switch was actuated during home
position return starting at other than
position beyond dog.
Check home position return
speed/creep speed/moving
distance after proximity dog.
In absolute position detection system
Positioning operation
was performed
without home
position setting.
1. Positioning operation was performed
without home position setting.
Perform home position setting.
Home position
setting ended
abnormally.
2. Home position setting speed could not be
decreased to creep speed.
3. Limit switch was actuated during home
position setting starting at other than
position beyond dog.
Check home position setting
speed/creep speed/moving
distance after proximity dog.
Operation was
performed without
making home
position setting while
an absolute position
erase (A25) is being
occurred.
4. Voltage drop in encoder
(Battery disconnected.)
After leaving the alarm occurring
for a few minutes, switch power
off, then on again. Always make
home position setting again.
5. Battery voltage low. Change the battery.
Always make home position
setting again.
6. Battery cable or battery is faulty.
A92 Open battery cable
warning
Absolute position
detection system battery
voltage is low.
1. Battery cable is open. Repair cable or changed.
2. Battery voltage supplied from the servo
amplifier to the encoder fell to about 3V or
less.
(Detected with the encoder)
Change the battery.
A96 Home position
setting warning
Home position setting
could not be made.
1. Droop pulses remaining are greater than
the in-position range setting.
Remove the cause of droop pulse
occurrence.
2. Command pulse entered after clearing of
droop pulses.
Do not enter command pulse
after clearing of droop pulses.
3. Creep speed high. Reduce creep speed.