YASKAWA SGM series User Manual page 370

INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Display cont.
6
360
Display and Outputs
Digital Operator g p
Display and Di l d
Alarm Name Alarm Name
ALO1
A.b1
OFF
Reference input
read error (for
speed/torque
control only)
Status When Alarm Occurred
During servomotor
operation
Cause
A Part malfunctioned in reference read-in unit
(A/D converter, etc.).
B Part defective in reference read-in unit
(A/D converter, etc.).
C Circuit board (1PWB) defective
Display and Outputs
Digital Operator g p
Di Display and l d
Alarm Name Alarm Name
ALO1
A.C1
ON
Servo overrun
Status When Alarm Occurred
At power ON
User constant
Cn-01 Bit 0 = 0
Occurred 1 to 3 se-
conds after power ON
User constant
Cn-01 Bit 0 = 1
Alarm Output
Alarm Code Output
ALO2
OFF
At power ON
A B
,
Reset alarm and restart operation.
Replace Servopack.
Replace Servopack.
Alarm Output
Alarm Code Output
ALO2
OFF
When servo ON (S-ON)
signal turned ON
On speed reference input
E
A B
, , C, D, E
Alarm Output
ALO3
OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
C
Remedy
Alarm Output
ALO3
ON OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
A B
, , C, D, E
A B
, , C, D, E
p
p