12 Error Lists
12-6
12.4
Errors in Semi-closed Loop Control with Linear Motors
Alarm Number: Alarm
Name (Alarm
Description)
Cause
Investigative Actions
Corrective Actions
A.041:
Encoder Output Pulse
Setting Error
The linear scale output pulse (Pn212)
is out of the setting range and does
not satisfy the setting condition.
Check the parameter
Pn212.
Set Pn212 to a correct
value.
A.511:
Overspeed of Encoder
Output Pulse Rate
The pulse output speed upper limit of
the set linear scale output pulse
(Pn212) is exceeded.
Check the linear scale out-
put pulse output setting
Decrease the setting of the
linear scale output pulse
(Pn212).
A.550:
Maximum Speed Setting
Error
The Pn385 setting is greater than the
maximum speed.
-
Decrease the setting for
Pn385.
A.820:
Encoder Checksum
Error
An linear scale fault occurred.
-
Set up the linear scale
again using Fn008. If the
alarm still occurs, the lin-
ear servomotor may be
faulty. Replace the linear
servomotor.
A SERVOPACK fault occurred.
-
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
A.830:
Absolute Encoder Bat-
tery Error
The battery voltage is lower than the
specified value after the control
power supply is turned ON.
Measure the battery volt-
age.
Replace the battery.
A.840:
Encoder Data Error
A linear scale fault occurred
Turn the power supply
OFF and then ON again.
If the alarm still occurs,
the linear scale may be
faulty. Replace the servo-
motor.
Malfunction of linear scale because
of noise interference, etc.
-
Correct the wiring around
the linear scale by separat-
ing the cable for linear
scale from the main cir-
cuit cable or by checking
the grounding and other
wiring.
Note: If the scale file is configured for Hall sensor connectivity, a Hall sensor must be con-
nected. Disabling Hall sensor connectivity (Pn080.0 = 1) and trying to work without the
sensor will cause error A.840.
A.850:
Encoder Over-speed
The linear scale was operating at high
speed when the power was turned
ON.
Check the motor speed
(Un000) to confirm the
motor speed when the
power is turned ON.
Reduce the motor speed to
a value below the speed
specified by the linear
scale manufacturer, and
turn ON the control power
supply.
A.860:
Encoder Over-heated
The internal temperature of linear ser-
vomotor is too high.
Measure the ambient
operating temperature
around the linear servo-
motor.
The ambient operating
temperature of the linear
servomotor must be 40 °C
or less.
A.890:
Encoder Scale Error
A linear scale fault occurred.
-
The linear scale may be
faulty. Replace the linear
scale.
A:891:
Encoder Module Error
A linear scale fault occurred.
Turn the power supply
OFF and then ON again.
If the alarm still occurs,
the linear servomotor may
be faulty. Replace the lin-
ear servomotor.
Summary of Contents for S-V Seres
Page 16: ...xvi ...
Page 62: ...9 Motor and Scale Parameter File 9 2 2 Scale Parameters 9 6 ...