Chapter 7 Troubleshooting
PAGE 7-11
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Code A08-04 - SERVO AMPLIFIER ERROR / OVER CURRENT
The HFC 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.
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Code A08-05 - SERVO AMPLIFIER ERROR / OVER VOLTAGE ABNORMAL
The HFC controller servo power supply circuit is not working properly or the input voltage is above the
maximum limit.
CAUSE:
1. The controller internal power supply has failed.
2. Source voltage is very close to the limit (253 VAC).
3. Internal regenerative voltage surge caused by motor ramp down.
RECOVERY:
1. Replace the controller.
2. Verify and correct the source voltage as required.
3. Reduce fastener rundown speed or reduce the difference between the fastener rundown speed
and ramp down speed.
4. Verify that rundown
revolutions is not set too high (causing fastener to ‘slam’ into part before
slowing down)
5. Verify that the cable is not damaged. Replace if necessary.
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Code A08-07 - SERVO AMPLIFIER ERROR / CONTROL POWER INTERRUPT ABNORMAL
The HFC controller control power circuit has detected input voltage below 18V.
CAUSE:
1. The control power supply (24VDC) does not have enough capacity.
RECOVERY:
1. Confirm power supply wiring
2. Change control power supply to a larger size.
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Code A08-08 - SERVO AMPLIFIER ERROR / SYSTEM ERROR.
Internal malfunction of the controller
CAUSE:
1. The controller has failed.
RECOVERY:
1. Power down controller for 5 minutes and power up.
2. If abnormal continues, replace the controller.
Содержание Handheld Nutrunner HFC3000
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