14.3 Errors in Fully-closed Loop Control
Alarm Number: Alarm
Name (Alarm Description)
Cause
Investigative Actions
Corrective Actions
A.041: Encoder Output
Pulse Setting Error
The setting of Pn212
(Encoder Output Pulses) or
Pn281 (Encoder Output
Resolution) is outside of the
setting range or does not
satisfy the setting condi-
tions.
Check the parameters
Pn212 and Pn281.
/// Disable Pn080.0 (Polarity
Sensor Selection) and set to
1 (Do not use polarity
sensor).
Set Pn212 and Pn281 to a
correct value.
A.042: Parameter Combina-
tion Error
n
The value of the pro-
gram jogging movement
speed (Pn533 or Pn585)
is below the setting
range.
n
The required parame-
ters (Pn001, Pn601, and
Pn604) have not been
set.
Check that the detection
conditions are satisfied.
Increase the setting for pro-
gram jogging movement
speed (Pn533 or Pn585).
A.511: Encoder Output
Pulse Overspeed
n
Rotary Servomotor: The
pulse output speed for
the setting of Pn212
(Encoder Output Pulses)
was exceeded.
n
Linear Servomotor: The
motor speed upper limit
for the setting of Pn281
(Encoder Output Reso-
lution) was exceeded.
Check the encoder output
pulse and the encoder
output resolution output set-
ting.
Decrease the setting of the
encoder output pulse
(Pn212) or of the encoder
output resolution (Pn281).
A.8A0: External Encoder
Error
An external encoder fault
occurred.
-
Replace the external
encoder.
A.8A1: External Encoder
Module Error
An error occurred in the
Serial Converter Unit.
-
Check wiring and encoder
signals.
A.8A2 External Incremental
Encoder Sensor Error
An external encoder fault
occurred. The specified
cable is not used or the
cable is too long.
-
Replace the external
encoder.
A.8A3 External Absolute
Encoder Position Error
An error occurred in the
position data of the external
encoder.
-
The absolute external
encoder may be faulty.
Refer to the encoder manu-
facture’s instruction manual
for corrective actions.
A.8A5 External Encoder
Overspeed
An overspeed error
occurred in the external
encoder.
-
Replace the external
encoder.
A.8A6 External Encoder
Overheated
An overheating error
occurred in the external
encoder.
-
Replace the external
encoder.
A.CF1: Reception Failed
Error in Feedback Option
Module Communications
Wiring of cable between
external encoder and feed-
back option card is incorrect
or contact is faulty.
Check the external encoder
wiring.
Correct the cable wiring.
Sigma-5 and Sigma-7 Series SERVOPACKs
Error Lists
Errors in Fully-closed Loop Control
| | Feedback Option Module Type 3 - Manual version C - Revision 0 | en |
97
