Yaskawa SGDB - Manual (Page 513)

INSPECTION, MAINTENANCE, AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Display cont.
504
J A.00
Display and Outputs
Digital Operator
Di l d
Alarm Output g p
Display and
Alarm Name
Alarm Code Output Alarm Output
Alarm Name
ALO1 ALO2 ALO3
p
A.00
Absolute data
error
OFF OFF OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
Status When Alarm Occurred
F
At power ON
Cn-01 Bit 1 = 0
Cn-01 Bit 1 = 1
At SEN signal input
A, B , C , D, E, F
A, B , C , D, E, F
Cause Remedy
A Absolute encoder power not supplied from
SERVOPACK.
Use the SERVOPACK power supply for
the absolute encoder.
B Incorrect absolute encoder wiring (PA, PB,
RESET, SEN signal etc.)
Check and correct the absolute encoder
wiring.
C Absolute encoder malfunctioned • If Cn-01 Bit 1 = 0, turn SEN signal OFF and
back ON.
• If Cn-01 Bit 1 = 1, turn SERVOPACK power
OFF and back ON.
D Incorrect parameter setting.
Incremental encoder used with Cn-01 Bit E
set to 1.
Set Cn-01 Bit E to 0.
E Absolute encoder defective Replace servomotor.
F Circuit board (1PWB) defective Replace SERVOPACK.
Note Alarm A.00 is reset when the power is turned OFF and back ON. It is not reset by the normal
alarm reset.
NOTE Resetting SEN Signal
When resetting the SEN signal (i.e., turning it OFF and then back ON) for any reason, keep
the SEN signal at the high level for more than 1.3 s before turning it OFF.
SEN signal
OFF ON = High Level
1.3 s min.
OFF ON
15 ms min.
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