KFAS: Fanuc CNC Parts, Service, & Repair
Fanuc ALARM SV0431 SP9058 AiPS-B AL-03
Alarm SV0431 and SP9058 on Fanuc 0iF or 31iB and
AL-03 on
AiPS-B means, - Replace the Power Supply Module.
the temperature of the main circuit of Alphai-B Power Supply Module (A06B-6200-H
xx) heat sink has risen abnormally.
Cause and troubleshooting
(a) Failure in the heat sink cooling fan
Check the rotation state of the heat sink cooling fan.
→ Replace the heat sink cooling fan.
(b) Degradation of the cooling capacity due to dust in the heat sink
→ Clean the heat sink and cooling system using factory air or a vacuum cleaner.
(c) Overloaded operation
→ Review the machining conditions.
(d) The control printed circuit board is not correctly attached.
Push in the control printed circuit board in the front section of the Power Supply as far as it will
go. If it does not go in easily, pull it out and then push it in again.
This alarm is applicable for the following units
A06B-6200-H003
αiPS 3-B
A06B-6200-H008 αiPS 7.5-B
A06B-6200-H011 αiPS 11-B
A06B-6200-H015 αiPS 15-B
A06B-6200-H026 αiPS 26-B
A06B-6200-H030 αiPS 30-B
A06B-6200-H037 αiPS 37-B
A06B-6200-H055 αiPS 55-B
A06B-6202-H003 αiPS 3-B
A06B-6202-H008 αiPS 7.5-B
A06B-6202-H011 αiPS 11-B
A06B-6202-H015 αiPS 15-B
A06B-6202-H026 αiPS 26-B
A06B-6202-H030 αiPS 30-B
A06B-6202-H037 αiPS 37-B
A06B-6202-H055 αiPS 55-B
*CAUTION: High Voltage present.
Note: Some
Machine's electrical cabinet doors are equipped with "door interlock"
that will cause the breaker to trip when the door is open.
See the machine's manual for information on how to bypass so that you can observe the alarm LED status
Fanuc CNC Alarm App for your smart phone
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