YASKAWA SGLFW User Manual page 387

11 Inspection, Maintenance, and Troubleshooting
11.1.5 Troubleshooting of Alarm and Warning
Alarm Alarm Name
Display
A.82
Encoder
Checksum Error
(Detected on the
encoder side.)
A.84
Encoder Data
Error
(Detected on the
encoder side.)
A.b1
Reference
Speed Input
Read Error
(Detected when
the Servo is ON.)
A.b2
Reference
Force Input
Read Error
(Detected when
the servo is ON.)
A.b3
Current
Detection Error
(For the software
version 32 or
later)
A.bF
System Alarm
(Program error)
• Software
operation time
exceeded
• Stack overflow
• Micro program
error
A.C1
Servo Overrun
Detected
11-12
Table 11.5 Alarm Display and Troubleshooting (Cont'd)
Situation at Alarm
Occurrence
Occurred when the A fault occurred in the serial converter unit and was
control power sup- detected by the serial converter unit self-diagnosis.
ply was turned ON
A SERVOPACK fault occurred.
or during an opera-
tion.
Occurred when the The linear scale's signal is weak.
control power sup-
A malfunction occurred in the serial converter unit.
ply was turned ON.
A SERVOPACK board fault occurred.
Occurred during The linear scale's signal is weak.
normal operation.
A malfunction occurred in the serial converter unit
due to external noise.
A serial converter unit fault occurred.
A SERVOPACK board fault occurred.
Occurred when the A SERVOPACK board fault occurred.
control power sup-
ply was turned ON.
Occurred during A malfunction occurred in reading section of the
normal operation. speed reference input.
A SERVOPACK board fault occurred.
Occurred when the A SERVOPACK board fault occurred.
control power sup-
A malfunction occurred in the reading section of the
ply was turned ON.
force reference input.
Occurred during A SERVOPACK board fault occurred.
normal operation.
Occurred during Current sensor error is detected or servomotor line is
disconnected.
normal operation.
Occurred when the A SERVOPACK board fault occurred.
control power sup-
ply was turned ON.
Occurred during A program is incorrect.
normal operation.
A SERVOPACK board fault occurred.
Occurred when the A SERVOPACK board fault occurred.
control power sup-
ply was turned ON.
Occurred when the The order of phase U, V, and W in the servomotor
servo was ON or a wiring is incorrect.
reference was input.
The polarity detection is not performed properly
(When Pn080.0 = 1 is set).
A serial converter unit fault occurred.
A SERVOPACK fault occurred.
Cause
If this alarm occurs frequently, replace the serial
converter unit.
Replace the SERVOPACK.
Check if the linear scale is correctly mounted.
Turn the control power supply OFF and then ON
again. If this alarm occurs frequently, replace the
serial converter unit.
Replace the SERVOPACK.
Check if the linear scale is correctly mounted.
Correct the wiring around the serial converter unit
by separating the serial converter unit cable from
the power line, or by checking the grounding and
other wiring.)
If this alarm occurs frequently, replace the serial
converter unit.
Replace the SERVOPACK.
Replace the SERVOPACK.
Clear and reset the alarm and restart the operation.
Replace the SERVOPACK.
Replace the SERVOPACK.
Clear and reset the alarm and restart the operation.
Replace the SERVOPACK.
Check and correct the servomotor power line, or
replace the SERVOPACK.
Replace the SERVOPACK.
Replace the SERVOPACK. (Contact your
Yaskawa representative.)
Replace the SERVOPACK.
Replace the SERVOPACK.
Correct the servomotor wiring.
Correct the settings for the polarity detection
related parameter.
Replace the serial converter unit.
Replace the SERVOPACK.
Corrective Actions