JUKI AMS-221EN Series Engineer's Manual page 176

4) LED3 for SDC board error check
No. of LED3 flashes
Turn on
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Error description
Nil
Main shaft motor lock
Error in phase Z
Error in phases A and B
Motor position sensor error
IPM error
Undervoltage
Motor reverse rotation
Overvoltage
Power interruption
Not used
+85V power system error E903
+33V power system error E904
Overheasting
Not used
Communication erroe
Display of operation panel
E007
E303
E730
E731
E901
E813
E733
E811
Display disabled
E905
E916
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Remarks
Dimly turn on in ordinary state
Failure in revolving for 2 seconds
Failure in phase Z detection
About 1.5 turns
Failure in phases A and B detection
About 0.5 turns
Logical error in U, V, W
Error output generation from IPM
Source voltage -20% or more
Irregular motor revolutions
Source voltage +20% or more
Power interruption of 40ms or more
SDC board fuse F1 blow-off
SDC board fuse F2 blow-off
Radiator panel of SDC boaed heated
at 85°C or higher
Failure in comminication with the
MAIN board