GE General Electric Sewing Machine AF-300 ユーザーズマニュアル

 

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(3) Undervoltage(LU)                           (4)Overheating of heat sink (OH1) 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(5) External alarm input (OH2)                 

Has (momentary) power fail-
ure occurred?

 

Reset and restart o pera-
tion. (If F14 is 0,1) 

Faulty parts or loose connec-
tion in power control circuit? 

 

Replace faulty parts and 
fix connection. 

Power supply voltage within 
specified value?

 

Any load requiring large 
starting current within the 
same power distribution 
group?

 

Modify power distribu-
tion system to satisfy 
specified value. 

Does LU activate when cir-
cuit breaker or magnetic con-
tractor switched to ON?

 

Probable faulty control circuit 
of drive or error because of 
noise, etc. Contact GE Fuji

 

Power transformer ca-
pacity adequate?

 

Probable faulty drive. 
Contact GE Fuji 

 

LU 

No

 

No

 

No

 

No

 

No

 

Yes

 

Yes

 

Yes

 

Yes

 

Yes

 

Yes

 

 

Load excessive? 

Reduce load. 

Probable faulty drive 
or error because of 
noise, etc. Contact 

GE 

Fuji

. 

Ambient temperature 
within specified value? 

Cooling air passage 
blocked up? 

Cooling fan rotating?

 

Arrange peripheral 
conditions to secure 
specified value. 

Remove obstacles. 

Replace cooling fan. 

Yes

 

Yes

 

No

 

No

 

No

 

Yes

 

Yes

 

No

 

OH2 

Connect alarm signal con-
tact.  Short-circuit between 
terminals THR - CM if no 
signal is input. 

Signal from external de-
vice connected between 
control circuit terminals 
THR - CM? 

Is the alarm function of 
the external device operat-
ing correctly? 

Probable faulty drive or 
error because of noise.  
Contact GE Fuji. 

Remove the cause of alarm 
function activation. 

Yes

 

No

 

No

 

Yes