What causes a Servo Alarm fault (Axis Unit
display codes "d0, d1, d3, d7") and what
can I do to prevent it from happening?
From section 9.4.8 of the
manual.
SERVO ALARM <Error Description>
An error has been detected in the Servo Drive
portion of the Axis Unit. When this error message is displayed on the CRT,
the affected Axis Unit display should be checked for an Abnormal code.
Refer to Section
9.6 of the manual for more information regarding this failure type.
D3 - Servo Overtemp
(Abnormal will not clear until the affected Unit cools down):
<Check Items>
- Check the SET PARAMETER screens and
verify that the settings do not result in a Duty Cycle higher than 50%,
and that the resultant Cycle Time is not less than 12 seconds.
- Check the connected Axis Units for any
abnormal indications. If all spindles appear to be affected, the problem
is likely to be found in another System component.
- If the problem appears to be a common
fault, verify correct input power to the Axis Units.
- If the problem only affects a single
spindle, check the affected spindle for binding and excessive prevailing
torque. If either condition is found, isolate and correct the cause.
- If no binding or excessive prevailing
torque is found, verify correct Axis Unit input voltage and ensure that
the power cable is properly connected.
- If problem still exists, replace the
affected Axis Unit. Refer to Section
8.3 of the manual for more detailed information.
- If problem still exists, replace the
affected tool. Refer to Section
8.3 of the manual for more detailed information.
D0 - Encoder Connection
(Abnormal will not clear until
the problem is corrected):
<Check Items>
- Check the connected Axis Units for any
abnormal indications. If all spindles appear to be affected, the
problem may be a result of some common item.
- If the problem appears to be a common
fault, verify correct input power to the Axis Units.
- if the problem only affects a single
spindle, perform an encoder test procedure as provided in Section
8.2.2 of the manual.
- If the encoder test identifies a
problem, then exchange the tool, cables, and/or the Axis Unit until
the cause of the problem is identified.
- If the encoder test does not identify
a problem, verify the Axis Unit input voltage and ensure that the
power cable is properly connected.
- If problem still exists, replace the
affected Axis Unit. Refer to Section
8.3 of the manual for more detailed information.
- If problem still exists, replace the
affected tool. Refer to Section
8.3 of the manual for more detailed information.
D1 - Tool/Servo Mismatch
(Abnormal will clear when the tool and Axis Unit are properly matched):
<Check Items>
D7 - Overload
(Abnormal will clear after depressing the Reset switch):
<Check Items>
- Check the SET PARAMETER screens and
verify that the settings do not result in a Duty Cycle higher than
50%, and that the resultant Cycle Time is not less than 12 seconds.
- Check the connected Axis Units for any
abnormal indications. If all spindles appear to be affected, the
problem is likely to be found in another System component.
- If the problem appears to be a common
fault, verify correct input power to the Axis Units.
- If the problem only affects a single
spindle, check the affected spindle for binding and excessive
prevailing torque. If either condition is found, isolate and correct
the cause.
- If no binding or excessive prevailing
torque is found, verify correct Axis Unit input voltage and ensure
that the power cable is properly connected.
- If problem still exists, replace the
affected Axis Unit. Refer to Section
8.3 of the manual for more detailed information.
- If problem still exists, replace the
affected tool. Refer to Section
8.3 of the manual for more detailed information.
If this did not
answer your question or problem, please
contact our support department via email,
contact form or call (586)
781-2100
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