Autonics AiCA Series, User Manual

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13 Protection Function
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13 Protection Function
13.1 Alarm

This function stops motor to protect driver, depending on the error status such as over
current or over speed.

After removing the cause of alarm, re-supply power or apply the signal on Alarm Reset,
the driver returns to the normal status.
※ Depending on the alarm/warning type, it displays as a segment and indicator on
the Alarm/Status display part.
※ When alarm/warning occurs, indicators flash with interval of 0.4 sec and turn OFF with
interval of 0.8 sec until the alarm/warning is cleared.
<E.g. In case of alarm no. 3>
1) Motor stops, torque releases and brake locks
No. of
flashing
Alarm type Desctiptions Causes Troubleshooting
1 (
E1
)
Over current
error
When over
current flows at
motor RUN
element
1. Over load
2. Insufficient SMPS
capacity
1. Change operation condition or
reduce load so that sudden load
fluctuation does not occur.
2. Check that less than the
recommended SMPS capacity is
used.
3. Check driver break.
2 (
E2
)
Over speed
error
When motor
speed is over
3,500rpm
1. When overload is
applied and released at
a moment.
2. Turning more than
4,000 rpm by external
force.
1. Change operation condition or
reduce load so that sudden load
fluctuation does not occur.
2. Change the operating condition
so that the motor does not
ratate more than 4,000 rpm.
3 (
E3
)
Position
tracking error
When the gap
between position
command value
and current
position value is
over 90°
1. Over load
2. Motor connector and
cable connection error
3. Burnout of line driver IC
in encoder
1. Change operation condition or
reduce load so that sudden load
fluctuation does not occur.
2. Check motor connector and
cable connection.
3. Replace the line driver IC in
encoder.