YASKAWA SGM-A3 - Page 414

INSPECTION, MAINTENANCE, AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Display cont.
402
D Display and Outputs
Digital Operator
Di l
d
Alarm Output
g
p
Display and
Alarm
Name
Alarm Code Output
Alarm Output
Al
arm
N
ame
ALO1 ALO2 ALO3
p
A.85
Absolute encoder
overspeed (only if
absolute encoder
is used)
OFF OFF OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
Status When Alarm Occurred
B
At control power ON
Cn-01 Bit 1 = 0
Cn-01 Bit 1 = 1
When SEN signal turned
ON, Cn-01 Bit 1 = 0
A
A
Position control
A
Cause Remedy
A Absolute encoder turned ON at a speed
exceeding 400 r/min.
Turn ON encoder power supply (or SEN
signal or Servopack control power supply)
at a speed not exceeding 400 r/min.
B Circuit board (1PWB) defective Replace Servopack.
D Display and Outputs
Digital Operator
Di l
d
Alarm Output
g
p
Display and
Alarm
Name
Alarm Code Output
Alarm Output
Al
arm
N
ame
ALO1 ALO2 ALO3
p
A.b1
Reference input
read error (for
speed/torque
control only)
OFF OFF OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
6