FEC AFC3000, Hardware Operation Manual

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Chapter 10 Troubleshooting
PAGE 10-11
10-7 Servo Amplifier Errors [A.08 - *]
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Code A08-01 - SERVO AMPLIFIER ERROR / SERVO HAS OVER HEATED
The MFC controller servo thermal sensor has detected an overheat condition.
CAUSE:
1. If the environmental temperature is more than 113 degrees Fahrenheit (45 degree centigrade)
without any air flow or cooling unit
2. Source voltage is very close to the limit (253 VAC) and the environment temperature is also close
to 113 degrees F.
3. Maximum torque or duty cycle is being run or exceeded by the tool every cycle. (Duty can not be
more than 60% - time running/overall cycle time)
RECOVERY:
1. Replace the controller.
2. Provide additional cooling to the enclosure.
3. Verify and correct the source voltage as required.
4. Turn control power off to the unit for at least 5 minutes then re-apply power.
5. Verify proper torque or work piece.
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Code A08-02 - SERVO AMPLIFIER ERROR / WATCHDOG TIMER ABNORMAL
The MFC controller watchdog timer is not functioning properly.
CAUSE:
1. The controller watch dog circuit has malfunctioned or failed.
RECOVERY:
1. Turn control power off to the unit for at least 5 seconds then re-apply power.
2. Replace the controller.
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Code A08-04 - SERVO AMPLIFIER ERROR / OVER CURRENT
The MFC controller servo circuit experienced a current overload.
CAUSE:
1. The fastener rundown speed may be set too high and creating high current spikes when it tries to
ramp down to a slower speed or as the fastener is seated to the work piece.
2. Damage to the motor power wiring of the tool cable causing a short circuit.
3. Damage to the resolver wiring of the tool cable resulting in the servo amplifier loosing control of
the motor because the signal feedback is incorrect.
RECOVERY:
1. Reduce fastener rundown speed or reduce the difference between the fastener rundown speed
and ramp down speed.
2. Verify that rundown revolutions is not set too high.
3. Verify that the cable is not damaged. Replace if necessary.