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4) LED3 for SDC board error check
No. of LED3 flashes
Error description
Display of operation panel
Remarks
Turn on
Nil
Dimly turn on in ordinary state
1
Main shaft motor lock
E007
Failure in revolving for 2 seconds
2
Error in phase Z
E303
Failure in phase Z detection
About 1.5 turns
3
Error in phases A and B
E730
Failure in phases A and B detection
About 0.5 turns
4
Motor position sensor error
E731
Logical error in U, V, W
5
IPM error
E901
Error output generation from IPM
6
Undervoltage
E813
Source voltage -20% or more
7
Motor reverse rotation
E733
Irregular motor revolutions
8
Overvoltage
E811
Source v20% or more
9
Power interruption
Display disabled
Power interruption of 40ms or more
10
Not used
11
+85V power system error
E903
SDC board fuse F1 blow-off
12
+33V power system error
E904
SDC board fuse F2 blow-off
13
Overheasting
E905
Radiator panel of SDC boaed heated
at 85
°
C or higher
14
Not used
15
Communication erroe
E916
Failure in comminication with the
MAIN board