Errors In Semi-Closed Loop Control With Linear Motors - YASKAWA SGDV-OFB03A Product Manual

Error Lists

Errors in Semi-closed Loop Control with Linear Motors

Alarm Number: Alarm
Name (Alarm Description)
A.CA0: Encoder Parameter
Error
A.CB0: Encoder Echoback
Error
A.CC0: Multiturn Limit Disa-
greement
A.D30: Position Data Over-
flow
14.5 Errors in Semi-closed Loop Control with Linear Motors
Alarm Number: Alarm
Name (Alarm Description)
A.041: Encoder Output
Pulse Setting Error
A.511: Encoder Output
Pulse Overspeed
A.550: Maximum Speed
Setting Error
A.820: Encoder Checksum
Alarm
100
Cause
Excessive vibration and
shocks were applied to the
encoder.
Feedback option card is not
configured.
The encoder wiring and con-
tact are incorrect.
Noise interference occurred
due to incorrect encoder
cable specifications.
Noise interference occurred
because the wiring distance
for the encoder cable is too
long.
Different multiturn limits
have been set in the
encoder and the SERVO-
PACK.
The multi-turn position data
exceeded +/-32767.
Cause
The setting of Pn281
(Encoder Output Resolution)
is outside of the setting
range or does not satisfy the
setting conditions.
Linear Servomotor: The
n
motor speed upper limit
for the setting of Pn281
(Encoder Output Reso-
lution) was exceeded.
The setting of Pn385 (Max-
imum Motor Speed) is
greater than the maximum
motor speed.
A linear scale fault occurred. -
| | Feedback Option Module Type 3 - Manual version C - Revision 0 | en |
Sigma-5 and Sigma-7 Series SERVOPACKs
Investigative Actions
Check the operating envi-
ronment.
-
Check the encoder wiring.
Check the encoder wiring.
Check the encoder wiring.
Check the value of the multi-
turn limit value (Pn205).
-
Investigative Actions
Check the parameter
Pn281.
Check the encoder output
resolution output setting.
-
Corrective Actions
Reduce the machine vibra-
tion or correctly install the
servomotor.
Contact YASKAWA to
receive a valid configuration
file. Copy to feedback option
card. Power cycle.
Correct the encoder wiring.
Use tinned annealed copper
twisted pair or shielded
twisted-pair cable with a
core of at least 0.12 mm².
The wiring distance must be
20 m max.
Correct the setting of Pn205
(0 to 65535).
Correct the setting (-32767
to +32767)
Corrective Actions
Set Pn281 to a correct
value.
Decrease the setting of the
encoder output resolution
(Pn281).
Decrease the setting for
Pn385.
Set up the linear scale again
using Fn008. If the alarm
still occurs, the linear servo-
motor may be faulty.
Replace the linear servo-
motor.